/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 18:02:24,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 18:02:24,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 18:02:24,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-01-16 18:02:24,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 18:02:24,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 18:02:24,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 18:02:24,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 18:02:24,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 18:02:24,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 18:02:24,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 18:02:24,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 18:02:24,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 18:02:24,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 18:02:24,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 18:02:24,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 18:02:24,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 18:02:24,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-01-16 18:02:24,851 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 18:02:24,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 18:02:24,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 18:02:24,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 18:02:24,856 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 18:02:24,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 18:02:24,860 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 18:02:24,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 18:02:24,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 18:02:24,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 18:02:24,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 18:02:24,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 18:02:24,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 18:02:24,861 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 18:02:24,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 18:02:24,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 18:02:24,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 18:02:24,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 18:02:24,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 18:02:24,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 18:02:24,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 18:02:24,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 18:02:24,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 18:02:24,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 18:02:24,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 18:02:24,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 18:02:24,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 18:02:24,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-01-16 18:02:24,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-01-16 18:02:24,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 18:02:25,128 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 18:02:25,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 18:02:25,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 18:02:25,150 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 18:02:25,150 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 18:02:25,151 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2020-01-16 18:02:25,151 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2020-01-16 18:02:25,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 18:02:25,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 18:02:25,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 18:02:25,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 18:02:25,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 18:02:25,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:25" (1/1) ... [2020-01-16 18:02:25,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:25" (1/1) ... [2020-01-16 18:02:25,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 18:02:25,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 18:02:25,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 18:02:25,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 18:02:25,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:25" (1/1) ... [2020-01-16 18:02:25,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:25" (1/1) ... [2020-01-16 18:02:25,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:25" (1/1) ... [2020-01-16 18:02:25,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:25" (1/1) ... [2020-01-16 18:02:25,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:25" (1/1) ... [2020-01-16 18:02:25,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:25" (1/1) ... [2020-01-16 18:02:25,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:25" (1/1) ... [2020-01-16 18:02:25,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 18:02:25,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 18:02:25,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 18:02:25,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 18:02:25,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 18:02:25,309 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 18:02:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 18:02:25,309 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 18:02:25,309 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 18:02:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 18:02:25,310 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 18:02:25,310 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 18:02:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 18:02:25,310 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 18:02:25,311 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 18:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 18:02:25,311 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 18:02:25,311 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 18:02:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 18:02:25,312 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 18:02:25,312 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 18:02:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 18:02:25,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 18:02:25,312 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-01-16 18:02:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-01-16 18:02:25,313 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-01-16 18:02:25,314 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-01-16 18:02:25,508 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 18:02:25,508 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 18:02:25,509 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 06:02:25 BoogieIcfgContainer [2020-01-16 18:02:25,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 18:02:25,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 18:02:25,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 18:02:25,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 18:02:25,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:25" (1/2) ... [2020-01-16 18:02:25,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b314839 and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 06:02:25, skipping insertion in model container [2020-01-16 18:02:25,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 06:02:25" (2/2) ... [2020-01-16 18:02:25,518 INFO L109 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2020-01-16 18:02:25,534 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-01-16 18:02:25,534 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 18:02:25,542 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 18:02:25,543 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 18:02:25,765 INFO L250 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-01-16 18:02:25,787 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 18:02:25,787 INFO L375 AbstractCegarLoop]: Hoare is true [2020-01-16 18:02:25,787 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 18:02:25,788 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 18:02:25,788 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 18:02:25,788 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 18:02:25,788 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 18:02:25,788 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 18:02:25,803 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 63 transitions [2020-01-16 18:02:25,805 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 52 places, 63 transitions [2020-01-16 18:02:25,954 INFO L129 PetriNetUnfolder]: 129/213 cut-off events. [2020-01-16 18:02:25,955 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2020-01-16 18:02:25,969 INFO L76 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 213 events. 129/213 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 773 event pairs. 0/212 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2020-01-16 18:02:25,974 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 52 places, 63 transitions [2020-01-16 18:02:26,026 INFO L129 PetriNetUnfolder]: 129/213 cut-off events. [2020-01-16 18:02:26,026 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2020-01-16 18:02:26,030 INFO L76 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 213 events. 129/213 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 773 event pairs. 0/212 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2020-01-16 18:02:26,039 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 780 [2020-01-16 18:02:26,040 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-01-16 18:02:26,192 INFO L206 etLargeBlockEncoding]: Checked pairs total: 225 [2020-01-16 18:02:26,193 INFO L214 etLargeBlockEncoding]: Total number of compositions: 7 [2020-01-16 18:02:26,197 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 56 transitions [2020-01-16 18:02:26,274 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 794 states. [2020-01-16 18:02:26,276 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states. [2020-01-16 18:02:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:26,297 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:26,298 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:26,298 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:26,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:26,305 INFO L82 PathProgramCache]: Analyzing trace with hash -773222054, now seen corresponding path program 1 times [2020-01-16 18:02:26,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:26,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043715039] [2020-01-16 18:02:26,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:26,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043715039] [2020-01-16 18:02:26,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:26,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:02:26,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756021677] [2020-01-16 18:02:26,478 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:02:26,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:26,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:02:26,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:26,496 INFO L87 Difference]: Start difference. First operand 794 states. Second operand 3 states. [2020-01-16 18:02:26,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:26,549 INFO L93 Difference]: Finished difference Result 602 states and 2198 transitions. [2020-01-16 18:02:26,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:02:26,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-01-16 18:02:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:26,586 INFO L225 Difference]: With dead ends: 602 [2020-01-16 18:02:26,586 INFO L226 Difference]: Without dead ends: 601 [2020-01-16 18:02:26,588 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:26,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-01-16 18:02:26,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2020-01-16 18:02:26,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2020-01-16 18:02:26,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 2197 transitions. [2020-01-16 18:02:26,709 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 2197 transitions. Word has length 19 [2020-01-16 18:02:26,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:26,710 INFO L478 AbstractCegarLoop]: Abstraction has 601 states and 2197 transitions. [2020-01-16 18:02:26,711 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:02:26,711 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 2197 transitions. [2020-01-16 18:02:26,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:26,715 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:26,716 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:26,716 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:26,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:26,716 INFO L82 PathProgramCache]: Analyzing trace with hash 969558490, now seen corresponding path program 1 times [2020-01-16 18:02:26,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:26,719 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594057731] [2020-01-16 18:02:26,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:26,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594057731] [2020-01-16 18:02:26,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:26,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:02:26,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153316662] [2020-01-16 18:02:26,753 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:02:26,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:26,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:02:26,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:26,754 INFO L87 Difference]: Start difference. First operand 601 states and 2197 transitions. Second operand 3 states. [2020-01-16 18:02:26,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:26,785 INFO L93 Difference]: Finished difference Result 417 states and 1445 transitions. [2020-01-16 18:02:26,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:02:26,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-01-16 18:02:26,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:26,791 INFO L225 Difference]: With dead ends: 417 [2020-01-16 18:02:26,792 INFO L226 Difference]: Without dead ends: 417 [2020-01-16 18:02:26,793 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-01-16 18:02:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2020-01-16 18:02:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-01-16 18:02:26,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1445 transitions. [2020-01-16 18:02:26,816 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 1445 transitions. Word has length 19 [2020-01-16 18:02:26,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:26,816 INFO L478 AbstractCegarLoop]: Abstraction has 417 states and 1445 transitions. [2020-01-16 18:02:26,816 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:02:26,816 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 1445 transitions. [2020-01-16 18:02:26,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:26,818 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:26,818 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:26,819 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:26,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:26,819 INFO L82 PathProgramCache]: Analyzing trace with hash 160210872, now seen corresponding path program 1 times [2020-01-16 18:02:26,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:26,820 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814276927] [2020-01-16 18:02:26,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:27,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814276927] [2020-01-16 18:02:27,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:27,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:27,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337886719] [2020-01-16 18:02:27,383 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:27,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:27,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:27,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:27,392 INFO L87 Difference]: Start difference. First operand 417 states and 1445 transitions. Second operand 8 states. [2020-01-16 18:02:27,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:27,525 INFO L93 Difference]: Finished difference Result 861 states and 2672 transitions. [2020-01-16 18:02:27,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:27,526 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:27,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:27,533 INFO L225 Difference]: With dead ends: 861 [2020-01-16 18:02:27,533 INFO L226 Difference]: Without dead ends: 823 [2020-01-16 18:02:27,534 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:27,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-01-16 18:02:27,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 447. [2020-01-16 18:02:27,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-01-16 18:02:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1541 transitions. [2020-01-16 18:02:27,560 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1541 transitions. Word has length 19 [2020-01-16 18:02:27,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:27,560 INFO L478 AbstractCegarLoop]: Abstraction has 447 states and 1541 transitions. [2020-01-16 18:02:27,560 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:27,560 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1541 transitions. [2020-01-16 18:02:27,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:27,562 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:27,563 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:27,563 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:27,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:27,563 INFO L82 PathProgramCache]: Analyzing trace with hash 534862058, now seen corresponding path program 2 times [2020-01-16 18:02:27,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:27,564 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345619285] [2020-01-16 18:02:27,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:27,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:27,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345619285] [2020-01-16 18:02:27,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:27,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:27,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153312184] [2020-01-16 18:02:27,939 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:27,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:27,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:27,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:27,940 INFO L87 Difference]: Start difference. First operand 447 states and 1541 transitions. Second operand 8 states. [2020-01-16 18:02:28,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:28,065 INFO L93 Difference]: Finished difference Result 871 states and 2699 transitions. [2020-01-16 18:02:28,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:28,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:28,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:28,073 INFO L225 Difference]: With dead ends: 871 [2020-01-16 18:02:28,073 INFO L226 Difference]: Without dead ends: 812 [2020-01-16 18:02:28,074 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:28,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-01-16 18:02:28,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 436. [2020-01-16 18:02:28,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-01-16 18:02:28,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1507 transitions. [2020-01-16 18:02:28,103 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1507 transitions. Word has length 19 [2020-01-16 18:02:28,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:28,104 INFO L478 AbstractCegarLoop]: Abstraction has 436 states and 1507 transitions. [2020-01-16 18:02:28,104 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:28,104 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1507 transitions. [2020-01-16 18:02:28,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:28,106 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:28,107 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:28,107 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:28,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:28,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1341600626, now seen corresponding path program 3 times [2020-01-16 18:02:28,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:28,108 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541394050] [2020-01-16 18:02:28,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:28,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:28,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541394050] [2020-01-16 18:02:28,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:28,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:28,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495518334] [2020-01-16 18:02:28,471 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:28,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:28,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:28,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:28,472 INFO L87 Difference]: Start difference. First operand 436 states and 1507 transitions. Second operand 8 states. [2020-01-16 18:02:28,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:28,566 INFO L93 Difference]: Finished difference Result 855 states and 2646 transitions. [2020-01-16 18:02:28,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:28,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:28,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:28,573 INFO L225 Difference]: With dead ends: 855 [2020-01-16 18:02:28,573 INFO L226 Difference]: Without dead ends: 817 [2020-01-16 18:02:28,574 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:28,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2020-01-16 18:02:28,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 445. [2020-01-16 18:02:28,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-01-16 18:02:28,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1528 transitions. [2020-01-16 18:02:28,599 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1528 transitions. Word has length 19 [2020-01-16 18:02:28,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:28,600 INFO L478 AbstractCegarLoop]: Abstraction has 445 states and 1528 transitions. [2020-01-16 18:02:28,600 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:28,600 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1528 transitions. [2020-01-16 18:02:28,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:28,602 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:28,602 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:28,603 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:28,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:28,603 INFO L82 PathProgramCache]: Analyzing trace with hash 365395876, now seen corresponding path program 4 times [2020-01-16 18:02:28,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:28,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021659950] [2020-01-16 18:02:28,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:28,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021659950] [2020-01-16 18:02:28,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:28,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:28,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257878527] [2020-01-16 18:02:28,909 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:28,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:28,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:28,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:28,910 INFO L87 Difference]: Start difference. First operand 445 states and 1528 transitions. Second operand 8 states. [2020-01-16 18:02:29,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:29,004 INFO L93 Difference]: Finished difference Result 861 states and 2662 transitions. [2020-01-16 18:02:29,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:29,005 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:29,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:29,011 INFO L225 Difference]: With dead ends: 861 [2020-01-16 18:02:29,011 INFO L226 Difference]: Without dead ends: 808 [2020-01-16 18:02:29,012 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:29,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2020-01-16 18:02:29,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 436. [2020-01-16 18:02:29,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-01-16 18:02:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1498 transitions. [2020-01-16 18:02:29,036 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1498 transitions. Word has length 19 [2020-01-16 18:02:29,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:29,037 INFO L478 AbstractCegarLoop]: Abstraction has 436 states and 1498 transitions. [2020-01-16 18:02:29,037 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1498 transitions. [2020-01-16 18:02:29,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:29,039 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:29,039 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:29,039 INFO L426 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:29,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:29,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1763599130, now seen corresponding path program 5 times [2020-01-16 18:02:29,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:29,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992126310] [2020-01-16 18:02:29,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:29,379 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 13 [2020-01-16 18:02:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:29,619 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992126310] [2020-01-16 18:02:29,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:29,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:29,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465882266] [2020-01-16 18:02:29,620 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:29,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:29,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:29,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:29,621 INFO L87 Difference]: Start difference. First operand 436 states and 1498 transitions. Second operand 8 states. [2020-01-16 18:02:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:29,708 INFO L93 Difference]: Finished difference Result 882 states and 2745 transitions. [2020-01-16 18:02:29,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:29,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:29,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:29,715 INFO L225 Difference]: With dead ends: 882 [2020-01-16 18:02:29,715 INFO L226 Difference]: Without dead ends: 834 [2020-01-16 18:02:29,716 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:29,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-01-16 18:02:29,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 452. [2020-01-16 18:02:29,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-01-16 18:02:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1546 transitions. [2020-01-16 18:02:29,738 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1546 transitions. Word has length 19 [2020-01-16 18:02:29,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:29,739 INFO L478 AbstractCegarLoop]: Abstraction has 452 states and 1546 transitions. [2020-01-16 18:02:29,739 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:29,739 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1546 transitions. [2020-01-16 18:02:29,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:29,741 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:29,741 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:29,741 INFO L426 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:29,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:29,742 INFO L82 PathProgramCache]: Analyzing trace with hash -905319246, now seen corresponding path program 6 times [2020-01-16 18:02:29,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:29,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396058260] [2020-01-16 18:02:29,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:29,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:29,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396058260] [2020-01-16 18:02:29,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:29,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:29,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631820637] [2020-01-16 18:02:29,980 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:29,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:29,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:29,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:29,981 INFO L87 Difference]: Start difference. First operand 452 states and 1546 transitions. Second operand 8 states. [2020-01-16 18:02:30,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:30,082 INFO L93 Difference]: Finished difference Result 878 states and 2717 transitions. [2020-01-16 18:02:30,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:30,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:30,091 INFO L225 Difference]: With dead ends: 878 [2020-01-16 18:02:30,091 INFO L226 Difference]: Without dead ends: 807 [2020-01-16 18:02:30,092 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:30,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2020-01-16 18:02:30,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 425. [2020-01-16 18:02:30,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-01-16 18:02:30,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 1468 transitions. [2020-01-16 18:02:30,112 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 1468 transitions. Word has length 19 [2020-01-16 18:02:30,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:30,113 INFO L478 AbstractCegarLoop]: Abstraction has 425 states and 1468 transitions. [2020-01-16 18:02:30,113 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:30,113 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 1468 transitions. [2020-01-16 18:02:30,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:30,116 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:30,117 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:30,117 INFO L426 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:30,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:30,118 INFO L82 PathProgramCache]: Analyzing trace with hash 903297962, now seen corresponding path program 7 times [2020-01-16 18:02:30,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:30,118 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990157175] [2020-01-16 18:02:30,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:30,385 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990157175] [2020-01-16 18:02:30,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:30,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:30,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370379224] [2020-01-16 18:02:30,386 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:30,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:30,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:30,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:30,387 INFO L87 Difference]: Start difference. First operand 425 states and 1468 transitions. Second operand 8 states. [2020-01-16 18:02:30,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:30,464 INFO L93 Difference]: Finished difference Result 838 states and 2569 transitions. [2020-01-16 18:02:30,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:30,464 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:30,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:30,471 INFO L225 Difference]: With dead ends: 838 [2020-01-16 18:02:30,471 INFO L226 Difference]: Without dead ends: 800 [2020-01-16 18:02:30,471 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:30,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2020-01-16 18:02:30,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 442. [2020-01-16 18:02:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-01-16 18:02:30,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1513 transitions. [2020-01-16 18:02:30,493 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1513 transitions. Word has length 19 [2020-01-16 18:02:30,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:30,493 INFO L478 AbstractCegarLoop]: Abstraction has 442 states and 1513 transitions. [2020-01-16 18:02:30,493 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:30,494 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1513 transitions. [2020-01-16 18:02:30,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:30,495 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:30,495 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:30,495 INFO L426 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:30,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:30,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1277949148, now seen corresponding path program 8 times [2020-01-16 18:02:30,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:30,496 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744329705] [2020-01-16 18:02:30,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:30,746 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744329705] [2020-01-16 18:02:30,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:30,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:30,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248127947] [2020-01-16 18:02:30,747 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:30,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:30,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:30,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:30,748 INFO L87 Difference]: Start difference. First operand 442 states and 1513 transitions. Second operand 8 states. [2020-01-16 18:02:30,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:30,846 INFO L93 Difference]: Finished difference Result 848 states and 2596 transitions. [2020-01-16 18:02:30,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:30,847 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:30,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:30,853 INFO L225 Difference]: With dead ends: 848 [2020-01-16 18:02:30,853 INFO L226 Difference]: Without dead ends: 789 [2020-01-16 18:02:30,854 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:30,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2020-01-16 18:02:30,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 431. [2020-01-16 18:02:30,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-01-16 18:02:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1483 transitions. [2020-01-16 18:02:30,878 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1483 transitions. Word has length 19 [2020-01-16 18:02:30,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:30,879 INFO L478 AbstractCegarLoop]: Abstraction has 431 states and 1483 transitions. [2020-01-16 18:02:30,879 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:30,879 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1483 transitions. [2020-01-16 18:02:30,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:30,881 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:30,881 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:30,882 INFO L426 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:30,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:30,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1759091492, now seen corresponding path program 9 times [2020-01-16 18:02:30,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:30,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813411824] [2020-01-16 18:02:30,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:31,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813411824] [2020-01-16 18:02:31,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:31,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:31,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365136648] [2020-01-16 18:02:31,147 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:31,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:31,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:31,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:31,147 INFO L87 Difference]: Start difference. First operand 431 states and 1483 transitions. Second operand 8 states. [2020-01-16 18:02:31,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:31,256 INFO L93 Difference]: Finished difference Result 821 states and 2505 transitions. [2020-01-16 18:02:31,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:31,256 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:31,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:31,262 INFO L225 Difference]: With dead ends: 821 [2020-01-16 18:02:31,262 INFO L226 Difference]: Without dead ends: 783 [2020-01-16 18:02:31,262 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:31,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-01-16 18:02:31,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 436. [2020-01-16 18:02:31,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-01-16 18:02:31,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1492 transitions. [2020-01-16 18:02:31,281 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1492 transitions. Word has length 19 [2020-01-16 18:02:31,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:31,282 INFO L478 AbstractCegarLoop]: Abstraction has 436 states and 1492 transitions. [2020-01-16 18:02:31,282 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:31,282 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1492 transitions. [2020-01-16 18:02:31,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:31,284 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:31,284 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:31,284 INFO L426 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:31,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:31,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1008029398, now seen corresponding path program 10 times [2020-01-16 18:02:31,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:31,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492661925] [2020-01-16 18:02:31,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:31,505 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492661925] [2020-01-16 18:02:31,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:31,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:31,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950274970] [2020-01-16 18:02:31,506 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:31,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:31,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:31,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:31,507 INFO L87 Difference]: Start difference. First operand 436 states and 1492 transitions. Second operand 8 states. [2020-01-16 18:02:31,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:31,595 INFO L93 Difference]: Finished difference Result 820 states and 2499 transitions. [2020-01-16 18:02:31,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:31,596 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:31,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:31,601 INFO L225 Difference]: With dead ends: 820 [2020-01-16 18:02:31,601 INFO L226 Difference]: Without dead ends: 778 [2020-01-16 18:02:31,602 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:31,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-01-16 18:02:31,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 431. [2020-01-16 18:02:31,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-01-16 18:02:31,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1478 transitions. [2020-01-16 18:02:31,619 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1478 transitions. Word has length 19 [2020-01-16 18:02:31,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:31,620 INFO L478 AbstractCegarLoop]: Abstraction has 431 states and 1478 transitions. [2020-01-16 18:02:31,620 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:31,620 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1478 transitions. [2020-01-16 18:02:31,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:31,621 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:31,622 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:31,622 INFO L426 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:31,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:31,622 INFO L82 PathProgramCache]: Analyzing trace with hash -262091078, now seen corresponding path program 11 times [2020-01-16 18:02:31,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:31,623 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251124620] [2020-01-16 18:02:31,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:31,883 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251124620] [2020-01-16 18:02:31,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:31,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:31,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383549194] [2020-01-16 18:02:31,884 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:31,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:31,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:31,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:31,885 INFO L87 Difference]: Start difference. First operand 431 states and 1478 transitions. Second operand 8 states. [2020-01-16 18:02:31,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:31,965 INFO L93 Difference]: Finished difference Result 845 states and 2591 transitions. [2020-01-16 18:02:31,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:31,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:31,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:31,973 INFO L225 Difference]: With dead ends: 845 [2020-01-16 18:02:31,973 INFO L226 Difference]: Without dead ends: 797 [2020-01-16 18:02:31,976 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:31,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-01-16 18:02:31,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 440. [2020-01-16 18:02:31,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-01-16 18:02:31,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1500 transitions. [2020-01-16 18:02:31,999 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1500 transitions. Word has length 19 [2020-01-16 18:02:32,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:32,000 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 1500 transitions. [2020-01-16 18:02:32,000 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:32,000 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1500 transitions. [2020-01-16 18:02:32,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:32,003 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:32,003 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:32,003 INFO L426 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:32,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:32,003 INFO L82 PathProgramCache]: Analyzing trace with hash -262685724, now seen corresponding path program 12 times [2020-01-16 18:02:32,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:32,004 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54104889] [2020-01-16 18:02:32,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:32,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54104889] [2020-01-16 18:02:32,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:32,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:32,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119375182] [2020-01-16 18:02:32,248 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:32,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:32,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:32,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:32,249 INFO L87 Difference]: Start difference. First operand 440 states and 1500 transitions. Second operand 8 states. [2020-01-16 18:02:32,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:32,333 INFO L93 Difference]: Finished difference Result 834 states and 2544 transitions. [2020-01-16 18:02:32,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:32,333 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:32,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:32,340 INFO L225 Difference]: With dead ends: 834 [2020-01-16 18:02:32,341 INFO L226 Difference]: Without dead ends: 782 [2020-01-16 18:02:32,341 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:32,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2020-01-16 18:02:32,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 425. [2020-01-16 18:02:32,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-01-16 18:02:32,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 1462 transitions. [2020-01-16 18:02:32,357 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 1462 transitions. Word has length 19 [2020-01-16 18:02:32,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:32,358 INFO L478 AbstractCegarLoop]: Abstraction has 425 states and 1462 transitions. [2020-01-16 18:02:32,358 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:32,358 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 1462 transitions. [2020-01-16 18:02:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:32,359 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:32,359 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:32,360 INFO L426 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:32,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:32,360 INFO L82 PathProgramCache]: Analyzing trace with hash -272531798, now seen corresponding path program 13 times [2020-01-16 18:02:32,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:32,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770432358] [2020-01-16 18:02:32,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:32,613 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770432358] [2020-01-16 18:02:32,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:32,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:32,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758740126] [2020-01-16 18:02:32,614 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:32,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:32,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:32,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:32,614 INFO L87 Difference]: Start difference. First operand 425 states and 1462 transitions. Second operand 8 states. [2020-01-16 18:02:32,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:32,719 INFO L93 Difference]: Finished difference Result 813 states and 2484 transitions. [2020-01-16 18:02:32,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:32,719 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:32,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:32,724 INFO L225 Difference]: With dead ends: 813 [2020-01-16 18:02:32,725 INFO L226 Difference]: Without dead ends: 775 [2020-01-16 18:02:32,725 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:32,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-01-16 18:02:32,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 435. [2020-01-16 18:02:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-01-16 18:02:32,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1490 transitions. [2020-01-16 18:02:32,742 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1490 transitions. Word has length 19 [2020-01-16 18:02:32,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:32,742 INFO L478 AbstractCegarLoop]: Abstraction has 435 states and 1490 transitions. [2020-01-16 18:02:32,742 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:32,743 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1490 transitions. [2020-01-16 18:02:32,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:32,744 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:32,744 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:32,744 INFO L426 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:32,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:32,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1023593892, now seen corresponding path program 14 times [2020-01-16 18:02:32,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:32,745 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802189878] [2020-01-16 18:02:32,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:32,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:32,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802189878] [2020-01-16 18:02:32,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:32,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:32,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904152574] [2020-01-16 18:02:32,970 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:32,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:32,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:32,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:32,971 INFO L87 Difference]: Start difference. First operand 435 states and 1490 transitions. Second operand 8 states. [2020-01-16 18:02:33,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:33,066 INFO L93 Difference]: Finished difference Result 812 states and 2478 transitions. [2020-01-16 18:02:33,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:33,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:33,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:33,074 INFO L225 Difference]: With dead ends: 812 [2020-01-16 18:02:33,074 INFO L226 Difference]: Without dead ends: 770 [2020-01-16 18:02:33,075 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:33,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2020-01-16 18:02:33,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 430. [2020-01-16 18:02:33,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-01-16 18:02:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1476 transitions. [2020-01-16 18:02:33,096 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1476 transitions. Word has length 19 [2020-01-16 18:02:33,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:33,096 INFO L478 AbstractCegarLoop]: Abstraction has 430 states and 1476 transitions. [2020-01-16 18:02:33,096 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:33,096 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1476 transitions. [2020-01-16 18:02:33,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:33,098 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:33,098 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:33,098 INFO L426 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:33,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:33,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1872969652, now seen corresponding path program 15 times [2020-01-16 18:02:33,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:33,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117190247] [2020-01-16 18:02:33,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:33,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:33,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117190247] [2020-01-16 18:02:33,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:33,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:33,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171271973] [2020-01-16 18:02:33,372 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:33,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:33,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:33,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:33,373 INFO L87 Difference]: Start difference. First operand 430 states and 1476 transitions. Second operand 8 states. [2020-01-16 18:02:33,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:33,446 INFO L93 Difference]: Finished difference Result 824 states and 2521 transitions. [2020-01-16 18:02:33,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:33,446 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:33,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:33,451 INFO L225 Difference]: With dead ends: 824 [2020-01-16 18:02:33,451 INFO L226 Difference]: Without dead ends: 786 [2020-01-16 18:02:33,452 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:33,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-01-16 18:02:33,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 439. [2020-01-16 18:02:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-01-16 18:02:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 1497 transitions. [2020-01-16 18:02:33,467 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 1497 transitions. Word has length 19 [2020-01-16 18:02:33,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:33,467 INFO L478 AbstractCegarLoop]: Abstraction has 439 states and 1497 transitions. [2020-01-16 18:02:33,468 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:33,468 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 1497 transitions. [2020-01-16 18:02:33,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:33,469 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:33,469 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:33,469 INFO L426 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:33,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:33,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1445792894, now seen corresponding path program 16 times [2020-01-16 18:02:33,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:33,470 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537705816] [2020-01-16 18:02:33,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:33,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537705816] [2020-01-16 18:02:33,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:33,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:33,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009207426] [2020-01-16 18:02:33,690 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:33,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:33,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:33,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:33,690 INFO L87 Difference]: Start difference. First operand 439 states and 1497 transitions. Second operand 8 states. [2020-01-16 18:02:33,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:33,805 INFO L93 Difference]: Finished difference Result 830 states and 2537 transitions. [2020-01-16 18:02:33,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:33,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:33,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:33,811 INFO L225 Difference]: With dead ends: 830 [2020-01-16 18:02:33,811 INFO L226 Difference]: Without dead ends: 777 [2020-01-16 18:02:33,812 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:33,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-01-16 18:02:33,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 430. [2020-01-16 18:02:33,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-01-16 18:02:33,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1471 transitions. [2020-01-16 18:02:33,826 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1471 transitions. Word has length 19 [2020-01-16 18:02:33,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:33,827 INFO L478 AbstractCegarLoop]: Abstraction has 430 states and 1471 transitions. [2020-01-16 18:02:33,827 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:33,827 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1471 transitions. [2020-01-16 18:02:33,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:33,829 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:33,829 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:33,829 INFO L426 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:33,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:33,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1221170070, now seen corresponding path program 17 times [2020-01-16 18:02:33,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:33,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519518651] [2020-01-16 18:02:33,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:34,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519518651] [2020-01-16 18:02:34,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:34,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:34,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14643613] [2020-01-16 18:02:34,045 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:34,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:34,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:34,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:34,046 INFO L87 Difference]: Start difference. First operand 430 states and 1471 transitions. Second operand 8 states. [2020-01-16 18:02:34,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:34,134 INFO L93 Difference]: Finished difference Result 821 states and 2512 transitions. [2020-01-16 18:02:34,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:34,134 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:34,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:34,140 INFO L225 Difference]: With dead ends: 821 [2020-01-16 18:02:34,140 INFO L226 Difference]: Without dead ends: 784 [2020-01-16 18:02:34,141 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:34,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-01-16 18:02:34,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 438. [2020-01-16 18:02:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2020-01-16 18:02:34,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1491 transitions. [2020-01-16 18:02:34,157 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1491 transitions. Word has length 19 [2020-01-16 18:02:34,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:34,157 INFO L478 AbstractCegarLoop]: Abstraction has 438 states and 1491 transitions. [2020-01-16 18:02:34,157 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:34,158 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1491 transitions. [2020-01-16 18:02:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:34,159 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:34,159 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:34,159 INFO L426 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:34,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:34,160 INFO L82 PathProgramCache]: Analyzing trace with hash -362295540, now seen corresponding path program 18 times [2020-01-16 18:02:34,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:34,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293281597] [2020-01-16 18:02:34,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:34,491 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 21 [2020-01-16 18:02:34,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:34,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293281597] [2020-01-16 18:02:34,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:34,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:34,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411178894] [2020-01-16 18:02:34,495 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:34,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:34,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:34,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:34,496 INFO L87 Difference]: Start difference. First operand 438 states and 1491 transitions. Second operand 8 states. [2020-01-16 18:02:34,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:34,636 INFO L93 Difference]: Finished difference Result 828 states and 2530 transitions. [2020-01-16 18:02:34,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:34,637 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:34,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:34,644 INFO L225 Difference]: With dead ends: 828 [2020-01-16 18:02:34,645 INFO L226 Difference]: Without dead ends: 771 [2020-01-16 18:02:34,645 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:34,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-01-16 18:02:34,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 425. [2020-01-16 18:02:34,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-01-16 18:02:34,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 1457 transitions. [2020-01-16 18:02:34,666 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 1457 transitions. Word has length 19 [2020-01-16 18:02:34,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:34,666 INFO L478 AbstractCegarLoop]: Abstraction has 425 states and 1457 transitions. [2020-01-16 18:02:34,666 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:34,667 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 1457 transitions. [2020-01-16 18:02:34,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:34,668 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:34,668 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:34,668 INFO L426 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:34,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:34,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1500056126, now seen corresponding path program 19 times [2020-01-16 18:02:34,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:34,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726262675] [2020-01-16 18:02:34,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:34,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:34,897 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726262675] [2020-01-16 18:02:34,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:34,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:34,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215362448] [2020-01-16 18:02:34,898 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:34,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:34,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:34,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:34,899 INFO L87 Difference]: Start difference. First operand 425 states and 1457 transitions. Second operand 8 states. [2020-01-16 18:02:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:34,992 INFO L93 Difference]: Finished difference Result 861 states and 2675 transitions. [2020-01-16 18:02:34,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:34,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:34,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:35,005 INFO L225 Difference]: With dead ends: 861 [2020-01-16 18:02:35,006 INFO L226 Difference]: Without dead ends: 813 [2020-01-16 18:02:35,007 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:35,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-01-16 18:02:35,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 442. [2020-01-16 18:02:35,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-01-16 18:02:35,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1515 transitions. [2020-01-16 18:02:35,029 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1515 transitions. Word has length 19 [2020-01-16 18:02:35,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:35,029 INFO L478 AbstractCegarLoop]: Abstraction has 442 states and 1515 transitions. [2020-01-16 18:02:35,029 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1515 transitions. [2020-01-16 18:02:35,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:35,031 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:35,032 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:35,033 INFO L426 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:35,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:35,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1499461480, now seen corresponding path program 20 times [2020-01-16 18:02:35,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:35,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928521818] [2020-01-16 18:02:35,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:35,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928521818] [2020-01-16 18:02:35,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:35,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:35,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715501298] [2020-01-16 18:02:35,270 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:35,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:35,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:35,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:35,270 INFO L87 Difference]: Start difference. First operand 442 states and 1515 transitions. Second operand 8 states. [2020-01-16 18:02:35,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:35,354 INFO L93 Difference]: Finished difference Result 850 states and 2628 transitions. [2020-01-16 18:02:35,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:35,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:35,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:35,357 INFO L225 Difference]: With dead ends: 850 [2020-01-16 18:02:35,358 INFO L226 Difference]: Without dead ends: 804 [2020-01-16 18:02:35,358 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:35,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2020-01-16 18:02:35,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 433. [2020-01-16 18:02:35,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-01-16 18:02:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 1485 transitions. [2020-01-16 18:02:35,375 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 1485 transitions. Word has length 19 [2020-01-16 18:02:35,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:35,375 INFO L478 AbstractCegarLoop]: Abstraction has 433 states and 1485 transitions. [2020-01-16 18:02:35,375 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:35,375 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 1485 transitions. [2020-01-16 18:02:35,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:35,377 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:35,377 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:35,377 INFO L426 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:35,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:35,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1939604516, now seen corresponding path program 21 times [2020-01-16 18:02:35,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:35,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480228588] [2020-01-16 18:02:35,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:35,593 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480228588] [2020-01-16 18:02:35,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:35,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:35,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412366722] [2020-01-16 18:02:35,595 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:35,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:35,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:35,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:35,596 INFO L87 Difference]: Start difference. First operand 433 states and 1485 transitions. Second operand 8 states. [2020-01-16 18:02:35,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:35,692 INFO L93 Difference]: Finished difference Result 875 states and 2726 transitions. [2020-01-16 18:02:35,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:35,693 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:35,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:35,696 INFO L225 Difference]: With dead ends: 875 [2020-01-16 18:02:35,697 INFO L226 Difference]: Without dead ends: 827 [2020-01-16 18:02:35,697 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:35,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2020-01-16 18:02:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 449. [2020-01-16 18:02:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-01-16 18:02:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1533 transitions. [2020-01-16 18:02:35,721 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1533 transitions. Word has length 19 [2020-01-16 18:02:35,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:35,722 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 1533 transitions. [2020-01-16 18:02:35,722 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:35,722 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1533 transitions. [2020-01-16 18:02:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:35,723 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:35,724 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:35,724 INFO L426 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:35,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:35,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1081324632, now seen corresponding path program 22 times [2020-01-16 18:02:35,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:35,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931994853] [2020-01-16 18:02:35,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:35,920 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931994853] [2020-01-16 18:02:35,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:35,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:35,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962541673] [2020-01-16 18:02:35,921 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:35,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:35,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:35,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:35,922 INFO L87 Difference]: Start difference. First operand 449 states and 1533 transitions. Second operand 8 states. [2020-01-16 18:02:36,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:36,012 INFO L93 Difference]: Finished difference Result 871 states and 2698 transitions. [2020-01-16 18:02:36,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:36,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:36,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:36,015 INFO L225 Difference]: With dead ends: 871 [2020-01-16 18:02:36,016 INFO L226 Difference]: Without dead ends: 811 [2020-01-16 18:02:36,016 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-01-16 18:02:36,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 433. [2020-01-16 18:02:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-01-16 18:02:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 1477 transitions. [2020-01-16 18:02:36,030 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 1477 transitions. Word has length 19 [2020-01-16 18:02:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:36,030 INFO L478 AbstractCegarLoop]: Abstraction has 433 states and 1477 transitions. [2020-01-16 18:02:36,030 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:36,030 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 1477 transitions. [2020-01-16 18:02:36,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:36,032 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:36,032 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:36,032 INFO L426 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:36,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:36,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1958633188, now seen corresponding path program 23 times [2020-01-16 18:02:36,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:36,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581719072] [2020-01-16 18:02:36,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:36,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:36,261 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581719072] [2020-01-16 18:02:36,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:36,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:36,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10192120] [2020-01-16 18:02:36,262 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:36,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:36,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:36,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:36,263 INFO L87 Difference]: Start difference. First operand 433 states and 1477 transitions. Second operand 8 states. [2020-01-16 18:02:36,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:36,348 INFO L93 Difference]: Finished difference Result 845 states and 2606 transitions. [2020-01-16 18:02:36,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:36,348 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:36,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:36,351 INFO L225 Difference]: With dead ends: 845 [2020-01-16 18:02:36,351 INFO L226 Difference]: Without dead ends: 808 [2020-01-16 18:02:36,351 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:36,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2020-01-16 18:02:36,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 441. [2020-01-16 18:02:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-01-16 18:02:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1497 transitions. [2020-01-16 18:02:36,366 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1497 transitions. Word has length 19 [2020-01-16 18:02:36,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:36,366 INFO L478 AbstractCegarLoop]: Abstraction has 441 states and 1497 transitions. [2020-01-16 18:02:36,366 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1497 transitions. [2020-01-16 18:02:36,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:36,368 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:36,369 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:36,369 INFO L426 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:36,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:36,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1099758658, now seen corresponding path program 24 times [2020-01-16 18:02:36,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:36,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782564919] [2020-01-16 18:02:36,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:36,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782564919] [2020-01-16 18:02:36,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:36,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:36,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702688641] [2020-01-16 18:02:36,580 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:36,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:36,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:36,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:36,580 INFO L87 Difference]: Start difference. First operand 441 states and 1497 transitions. Second operand 8 states. [2020-01-16 18:02:36,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:36,667 INFO L93 Difference]: Finished difference Result 852 states and 2624 transitions. [2020-01-16 18:02:36,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:36,668 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:36,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:36,671 INFO L225 Difference]: With dead ends: 852 [2020-01-16 18:02:36,671 INFO L226 Difference]: Without dead ends: 784 [2020-01-16 18:02:36,671 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:36,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-01-16 18:02:36,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 417. [2020-01-16 18:02:36,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-01-16 18:02:36,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1439 transitions. [2020-01-16 18:02:36,684 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 1439 transitions. Word has length 19 [2020-01-16 18:02:36,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:36,685 INFO L478 AbstractCegarLoop]: Abstraction has 417 states and 1439 transitions. [2020-01-16 18:02:36,685 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:36,685 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 1439 transitions. [2020-01-16 18:02:36,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:36,686 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:36,686 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:36,686 INFO L426 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:36,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:36,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1228367856, now seen corresponding path program 25 times [2020-01-16 18:02:36,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:36,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668341816] [2020-01-16 18:02:36,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:36,940 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668341816] [2020-01-16 18:02:36,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:36,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:36,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642102948] [2020-01-16 18:02:36,941 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:36,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:36,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:36,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:36,942 INFO L87 Difference]: Start difference. First operand 417 states and 1439 transitions. Second operand 8 states. [2020-01-16 18:02:37,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:37,010 INFO L93 Difference]: Finished difference Result 860 states and 2665 transitions. [2020-01-16 18:02:37,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:37,010 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:37,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:37,013 INFO L225 Difference]: With dead ends: 860 [2020-01-16 18:02:37,013 INFO L226 Difference]: Without dead ends: 822 [2020-01-16 18:02:37,014 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:37,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-01-16 18:02:37,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 446. [2020-01-16 18:02:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-01-16 18:02:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1534 transitions. [2020-01-16 18:02:37,029 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1534 transitions. Word has length 19 [2020-01-16 18:02:37,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:37,030 INFO L478 AbstractCegarLoop]: Abstraction has 446 states and 1534 transitions. [2020-01-16 18:02:37,030 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:37,030 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1534 transitions. [2020-01-16 18:02:37,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:37,031 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:37,031 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:37,031 INFO L426 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:37,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:37,032 INFO L82 PathProgramCache]: Analyzing trace with hash -853716670, now seen corresponding path program 26 times [2020-01-16 18:02:37,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:37,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648138210] [2020-01-16 18:02:37,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:37,279 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648138210] [2020-01-16 18:02:37,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:37,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:37,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442149522] [2020-01-16 18:02:37,280 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:37,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:37,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:37,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:37,282 INFO L87 Difference]: Start difference. First operand 446 states and 1534 transitions. Second operand 8 states. [2020-01-16 18:02:37,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:37,379 INFO L93 Difference]: Finished difference Result 870 states and 2692 transitions. [2020-01-16 18:02:37,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:37,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:37,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:37,381 INFO L225 Difference]: With dead ends: 870 [2020-01-16 18:02:37,382 INFO L226 Difference]: Without dead ends: 811 [2020-01-16 18:02:37,382 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:37,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-01-16 18:02:37,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 435. [2020-01-16 18:02:37,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-01-16 18:02:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1500 transitions. [2020-01-16 18:02:37,397 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1500 transitions. Word has length 19 [2020-01-16 18:02:37,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:37,397 INFO L478 AbstractCegarLoop]: Abstraction has 435 states and 1500 transitions. [2020-01-16 18:02:37,397 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:37,398 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1500 transitions. [2020-01-16 18:02:37,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:37,399 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:37,399 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:37,399 INFO L426 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:37,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:37,400 INFO L82 PathProgramCache]: Analyzing trace with hash -46978102, now seen corresponding path program 27 times [2020-01-16 18:02:37,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:37,400 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73141737] [2020-01-16 18:02:37,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:37,601 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73141737] [2020-01-16 18:02:37,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:37,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:37,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717799378] [2020-01-16 18:02:37,602 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:37,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:37,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:37,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:37,603 INFO L87 Difference]: Start difference. First operand 435 states and 1500 transitions. Second operand 8 states. [2020-01-16 18:02:37,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:37,666 INFO L93 Difference]: Finished difference Result 854 states and 2639 transitions. [2020-01-16 18:02:37,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:37,667 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:37,671 INFO L225 Difference]: With dead ends: 854 [2020-01-16 18:02:37,671 INFO L226 Difference]: Without dead ends: 816 [2020-01-16 18:02:37,671 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:37,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2020-01-16 18:02:37,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 444. [2020-01-16 18:02:37,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-01-16 18:02:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1521 transitions. [2020-01-16 18:02:37,686 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1521 transitions. Word has length 19 [2020-01-16 18:02:37,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:37,687 INFO L478 AbstractCegarLoop]: Abstraction has 444 states and 1521 transitions. [2020-01-16 18:02:37,687 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:37,687 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1521 transitions. [2020-01-16 18:02:37,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:37,688 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:37,688 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:37,688 INFO L426 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:37,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:37,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1023182852, now seen corresponding path program 28 times [2020-01-16 18:02:37,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:37,689 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880736842] [2020-01-16 18:02:37,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:37,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880736842] [2020-01-16 18:02:37,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:37,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:37,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223408171] [2020-01-16 18:02:37,932 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:37,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:37,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:37,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:37,933 INFO L87 Difference]: Start difference. First operand 444 states and 1521 transitions. Second operand 8 states. [2020-01-16 18:02:38,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:38,022 INFO L93 Difference]: Finished difference Result 860 states and 2655 transitions. [2020-01-16 18:02:38,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:38,022 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:38,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:38,025 INFO L225 Difference]: With dead ends: 860 [2020-01-16 18:02:38,025 INFO L226 Difference]: Without dead ends: 807 [2020-01-16 18:02:38,025 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2020-01-16 18:02:38,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 435. [2020-01-16 18:02:38,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-01-16 18:02:38,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1491 transitions. [2020-01-16 18:02:38,039 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1491 transitions. Word has length 19 [2020-01-16 18:02:38,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:38,040 INFO L478 AbstractCegarLoop]: Abstraction has 435 states and 1491 transitions. [2020-01-16 18:02:38,040 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:38,040 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1491 transitions. [2020-01-16 18:02:38,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:38,041 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:38,041 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:38,041 INFO L426 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:38,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:38,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1142789438, now seen corresponding path program 29 times [2020-01-16 18:02:38,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:38,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520053837] [2020-01-16 18:02:38,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:38,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520053837] [2020-01-16 18:02:38,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:38,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:38,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755415586] [2020-01-16 18:02:38,266 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:38,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:38,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:38,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:38,269 INFO L87 Difference]: Start difference. First operand 435 states and 1491 transitions. Second operand 8 states. [2020-01-16 18:02:38,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:38,362 INFO L93 Difference]: Finished difference Result 881 states and 2738 transitions. [2020-01-16 18:02:38,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:38,362 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:38,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:38,365 INFO L225 Difference]: With dead ends: 881 [2020-01-16 18:02:38,365 INFO L226 Difference]: Without dead ends: 833 [2020-01-16 18:02:38,365 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:38,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2020-01-16 18:02:38,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 451. [2020-01-16 18:02:38,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-01-16 18:02:38,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1539 transitions. [2020-01-16 18:02:38,381 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1539 transitions. Word has length 19 [2020-01-16 18:02:38,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:38,381 INFO L478 AbstractCegarLoop]: Abstraction has 451 states and 1539 transitions. [2020-01-16 18:02:38,381 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1539 transitions. [2020-01-16 18:02:38,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:38,382 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:38,383 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:38,383 INFO L426 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:38,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:38,383 INFO L82 PathProgramCache]: Analyzing trace with hash 2001069322, now seen corresponding path program 30 times [2020-01-16 18:02:38,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:38,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31697094] [2020-01-16 18:02:38,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:38,601 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31697094] [2020-01-16 18:02:38,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:38,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:38,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950033028] [2020-01-16 18:02:38,602 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:38,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:38,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:38,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:38,603 INFO L87 Difference]: Start difference. First operand 451 states and 1539 transitions. Second operand 8 states. [2020-01-16 18:02:38,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:38,685 INFO L93 Difference]: Finished difference Result 877 states and 2710 transitions. [2020-01-16 18:02:38,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:38,685 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:38,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:38,688 INFO L225 Difference]: With dead ends: 877 [2020-01-16 18:02:38,688 INFO L226 Difference]: Without dead ends: 806 [2020-01-16 18:02:38,688 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:38,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-01-16 18:02:38,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 424. [2020-01-16 18:02:38,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-01-16 18:02:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1461 transitions. [2020-01-16 18:02:38,703 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1461 transitions. Word has length 19 [2020-01-16 18:02:38,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:38,704 INFO L478 AbstractCegarLoop]: Abstraction has 424 states and 1461 transitions. [2020-01-16 18:02:38,704 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:38,704 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1461 transitions. [2020-01-16 18:02:38,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:38,705 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:38,705 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:38,705 INFO L426 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:38,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:38,706 INFO L82 PathProgramCache]: Analyzing trace with hash 784001922, now seen corresponding path program 31 times [2020-01-16 18:02:38,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:38,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284838858] [2020-01-16 18:02:38,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:38,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:38,943 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284838858] [2020-01-16 18:02:38,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:38,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:38,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571339343] [2020-01-16 18:02:38,944 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:38,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:38,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:38,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:38,945 INFO L87 Difference]: Start difference. First operand 424 states and 1461 transitions. Second operand 8 states. [2020-01-16 18:02:39,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:39,025 INFO L93 Difference]: Finished difference Result 837 states and 2562 transitions. [2020-01-16 18:02:39,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:39,026 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:39,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:39,029 INFO L225 Difference]: With dead ends: 837 [2020-01-16 18:02:39,029 INFO L226 Difference]: Without dead ends: 799 [2020-01-16 18:02:39,029 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2020-01-16 18:02:39,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 441. [2020-01-16 18:02:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-01-16 18:02:39,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1506 transitions. [2020-01-16 18:02:39,040 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1506 transitions. Word has length 19 [2020-01-16 18:02:39,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:39,040 INFO L478 AbstractCegarLoop]: Abstraction has 441 states and 1506 transitions. [2020-01-16 18:02:39,040 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:39,040 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1506 transitions. [2020-01-16 18:02:39,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:39,042 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:39,042 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:39,042 INFO L426 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:39,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:39,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1158653108, now seen corresponding path program 32 times [2020-01-16 18:02:39,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:39,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125368001] [2020-01-16 18:02:39,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:39,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:39,268 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125368001] [2020-01-16 18:02:39,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:39,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:39,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777504375] [2020-01-16 18:02:39,268 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:39,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:39,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:39,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:39,269 INFO L87 Difference]: Start difference. First operand 441 states and 1506 transitions. Second operand 8 states. [2020-01-16 18:02:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:39,355 INFO L93 Difference]: Finished difference Result 847 states and 2589 transitions. [2020-01-16 18:02:39,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:39,356 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:39,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:39,359 INFO L225 Difference]: With dead ends: 847 [2020-01-16 18:02:39,360 INFO L226 Difference]: Without dead ends: 788 [2020-01-16 18:02:39,360 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:39,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-01-16 18:02:39,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 430. [2020-01-16 18:02:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-01-16 18:02:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1476 transitions. [2020-01-16 18:02:39,374 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1476 transitions. Word has length 19 [2020-01-16 18:02:39,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:39,374 INFO L478 AbstractCegarLoop]: Abstraction has 430 states and 1476 transitions. [2020-01-16 18:02:39,374 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:39,374 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1476 transitions. [2020-01-16 18:02:39,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:39,376 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:39,376 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:39,376 INFO L426 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:39,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:39,376 INFO L82 PathProgramCache]: Analyzing trace with hash 988603004, now seen corresponding path program 33 times [2020-01-16 18:02:39,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:39,377 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113302026] [2020-01-16 18:02:39,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:39,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113302026] [2020-01-16 18:02:39,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:39,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:39,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851178302] [2020-01-16 18:02:39,568 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:39,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:39,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:39,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:39,568 INFO L87 Difference]: Start difference. First operand 430 states and 1476 transitions. Second operand 8 states. [2020-01-16 18:02:39,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:39,633 INFO L93 Difference]: Finished difference Result 820 states and 2498 transitions. [2020-01-16 18:02:39,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:39,634 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:39,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:39,635 INFO L225 Difference]: With dead ends: 820 [2020-01-16 18:02:39,636 INFO L226 Difference]: Without dead ends: 782 [2020-01-16 18:02:39,636 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:39,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2020-01-16 18:02:39,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 435. [2020-01-16 18:02:39,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-01-16 18:02:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1485 transitions. [2020-01-16 18:02:39,649 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1485 transitions. Word has length 19 [2020-01-16 18:02:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:39,650 INFO L478 AbstractCegarLoop]: Abstraction has 435 states and 1485 transitions. [2020-01-16 18:02:39,650 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1485 transitions. [2020-01-16 18:02:39,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:39,651 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:39,651 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:39,652 INFO L426 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:39,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:39,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1865254260, now seen corresponding path program 1 times [2020-01-16 18:02:39,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:39,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377801790] [2020-01-16 18:02:39,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:39,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:39,662 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377801790] [2020-01-16 18:02:39,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:39,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:02:39,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415842809] [2020-01-16 18:02:39,663 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:02:39,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:39,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:02:39,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:39,664 INFO L87 Difference]: Start difference. First operand 435 states and 1485 transitions. Second operand 3 states. [2020-01-16 18:02:39,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:39,671 INFO L93 Difference]: Finished difference Result 349 states and 1112 transitions. [2020-01-16 18:02:39,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:02:39,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-01-16 18:02:39,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:39,672 INFO L225 Difference]: With dead ends: 349 [2020-01-16 18:02:39,672 INFO L226 Difference]: Without dead ends: 349 [2020-01-16 18:02:39,672 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:39,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-01-16 18:02:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2020-01-16 18:02:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-01-16 18:02:39,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1112 transitions. [2020-01-16 18:02:39,688 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1112 transitions. Word has length 19 [2020-01-16 18:02:39,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:39,689 INFO L478 AbstractCegarLoop]: Abstraction has 349 states and 1112 transitions. [2020-01-16 18:02:39,689 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:02:39,689 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1112 transitions. [2020-01-16 18:02:39,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:39,690 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:39,690 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:39,690 INFO L426 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:39,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:39,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1163123542, now seen corresponding path program 34 times [2020-01-16 18:02:39,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:39,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884632399] [2020-01-16 18:02:39,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:39,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884632399] [2020-01-16 18:02:39,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:39,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:39,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268143829] [2020-01-16 18:02:39,888 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:39,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:39,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:39,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:39,889 INFO L87 Difference]: Start difference. First operand 349 states and 1112 transitions. Second operand 8 states. [2020-01-16 18:02:39,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:39,975 INFO L93 Difference]: Finished difference Result 644 states and 1770 transitions. [2020-01-16 18:02:39,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:39,975 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:39,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:39,977 INFO L225 Difference]: With dead ends: 644 [2020-01-16 18:02:39,977 INFO L226 Difference]: Without dead ends: 611 [2020-01-16 18:02:39,977 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:39,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-01-16 18:02:39,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 346. [2020-01-16 18:02:39,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-01-16 18:02:39,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1105 transitions. [2020-01-16 18:02:39,988 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1105 transitions. Word has length 19 [2020-01-16 18:02:39,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:39,988 INFO L478 AbstractCegarLoop]: Abstraction has 346 states and 1105 transitions. [2020-01-16 18:02:39,988 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:39,988 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1105 transitions. [2020-01-16 18:02:39,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:39,989 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:39,989 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:39,989 INFO L426 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:39,990 INFO L82 PathProgramCache]: Analyzing trace with hash -409413030, now seen corresponding path program 35 times [2020-01-16 18:02:39,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:39,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739547862] [2020-01-16 18:02:39,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:40,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:40,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739547862] [2020-01-16 18:02:40,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:40,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:40,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523492869] [2020-01-16 18:02:40,194 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:40,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:40,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:40,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:40,194 INFO L87 Difference]: Start difference. First operand 346 states and 1105 transitions. Second operand 8 states. [2020-01-16 18:02:40,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:40,283 INFO L93 Difference]: Finished difference Result 666 states and 1842 transitions. [2020-01-16 18:02:40,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:40,284 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:40,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:40,285 INFO L225 Difference]: With dead ends: 666 [2020-01-16 18:02:40,286 INFO L226 Difference]: Without dead ends: 626 [2020-01-16 18:02:40,286 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:40,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2020-01-16 18:02:40,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 352. [2020-01-16 18:02:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-01-16 18:02:40,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1117 transitions. [2020-01-16 18:02:40,296 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1117 transitions. Word has length 19 [2020-01-16 18:02:40,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:40,296 INFO L478 AbstractCegarLoop]: Abstraction has 352 states and 1117 transitions. [2020-01-16 18:02:40,296 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:40,296 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1117 transitions. [2020-01-16 18:02:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:40,297 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:40,297 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:40,297 INFO L426 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:40,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:40,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1283748356, now seen corresponding path program 36 times [2020-01-16 18:02:40,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:40,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927778186] [2020-01-16 18:02:40,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:40,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:40,501 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927778186] [2020-01-16 18:02:40,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:40,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:40,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522049971] [2020-01-16 18:02:40,502 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:40,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:40,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:40,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:40,503 INFO L87 Difference]: Start difference. First operand 352 states and 1117 transitions. Second operand 8 states. [2020-01-16 18:02:40,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:40,609 INFO L93 Difference]: Finished difference Result 656 states and 1805 transitions. [2020-01-16 18:02:40,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:40,609 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:40,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:40,611 INFO L225 Difference]: With dead ends: 656 [2020-01-16 18:02:40,611 INFO L226 Difference]: Without dead ends: 616 [2020-01-16 18:02:40,611 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:40,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-01-16 18:02:40,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 342. [2020-01-16 18:02:40,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-01-16 18:02:40,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 1096 transitions. [2020-01-16 18:02:40,620 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 1096 transitions. Word has length 19 [2020-01-16 18:02:40,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:40,621 INFO L478 AbstractCegarLoop]: Abstraction has 342 states and 1096 transitions. [2020-01-16 18:02:40,621 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:40,621 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 1096 transitions. [2020-01-16 18:02:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:40,621 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:40,621 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:40,622 INFO L426 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:40,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:40,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1043020286, now seen corresponding path program 37 times [2020-01-16 18:02:40,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:40,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195342861] [2020-01-16 18:02:40,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:40,818 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195342861] [2020-01-16 18:02:40,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:40,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:40,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143962840] [2020-01-16 18:02:40,819 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:40,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:40,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:40,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:40,819 INFO L87 Difference]: Start difference. First operand 342 states and 1096 transitions. Second operand 8 states. [2020-01-16 18:02:40,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:40,883 INFO L93 Difference]: Finished difference Result 637 states and 1753 transitions. [2020-01-16 18:02:40,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:40,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:40,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:40,885 INFO L225 Difference]: With dead ends: 637 [2020-01-16 18:02:40,885 INFO L226 Difference]: Without dead ends: 606 [2020-01-16 18:02:40,885 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:40,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-01-16 18:02:40,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 348. [2020-01-16 18:02:40,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-01-16 18:02:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 1110 transitions. [2020-01-16 18:02:40,894 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 1110 transitions. Word has length 19 [2020-01-16 18:02:40,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:40,894 INFO L478 AbstractCegarLoop]: Abstraction has 348 states and 1110 transitions. [2020-01-16 18:02:40,894 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:40,895 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 1110 transitions. [2020-01-16 18:02:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:40,896 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:40,896 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:40,896 INFO L426 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:40,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:40,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1100220464, now seen corresponding path program 38 times [2020-01-16 18:02:40,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:40,897 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819259904] [2020-01-16 18:02:40,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:41,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:41,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819259904] [2020-01-16 18:02:41,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:41,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:41,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506235505] [2020-01-16 18:02:41,103 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:41,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:41,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:41,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:41,103 INFO L87 Difference]: Start difference. First operand 348 states and 1110 transitions. Second operand 8 states. [2020-01-16 18:02:41,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:41,189 INFO L93 Difference]: Finished difference Result 636 states and 1749 transitions. [2020-01-16 18:02:41,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:41,190 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:41,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:41,191 INFO L225 Difference]: With dead ends: 636 [2020-01-16 18:02:41,192 INFO L226 Difference]: Without dead ends: 603 [2020-01-16 18:02:41,192 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:41,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-01-16 18:02:41,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 345. [2020-01-16 18:02:41,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-01-16 18:02:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1103 transitions. [2020-01-16 18:02:41,203 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1103 transitions. Word has length 19 [2020-01-16 18:02:41,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:41,203 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 1103 transitions. [2020-01-16 18:02:41,203 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:41,203 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1103 transitions. [2020-01-16 18:02:41,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:41,204 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:41,204 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:41,205 INFO L426 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:41,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:41,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1549366552, now seen corresponding path program 39 times [2020-01-16 18:02:41,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:41,205 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871273540] [2020-01-16 18:02:41,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:41,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871273540] [2020-01-16 18:02:41,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:41,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:41,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598198780] [2020-01-16 18:02:41,418 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:41,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:41,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:41,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:41,419 INFO L87 Difference]: Start difference. First operand 345 states and 1103 transitions. Second operand 8 states. [2020-01-16 18:02:41,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:41,485 INFO L93 Difference]: Finished difference Result 646 states and 1779 transitions. [2020-01-16 18:02:41,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:41,485 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:41,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:41,487 INFO L225 Difference]: With dead ends: 646 [2020-01-16 18:02:41,487 INFO L226 Difference]: Without dead ends: 615 [2020-01-16 18:02:41,487 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:41,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-01-16 18:02:41,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 351. [2020-01-16 18:02:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-01-16 18:02:41,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1114 transitions. [2020-01-16 18:02:41,495 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1114 transitions. Word has length 19 [2020-01-16 18:02:41,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:41,495 INFO L478 AbstractCegarLoop]: Abstraction has 351 states and 1114 transitions. [2020-01-16 18:02:41,495 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:41,495 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1114 transitions. [2020-01-16 18:02:41,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:41,497 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:41,497 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:41,497 INFO L426 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:41,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:41,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1769395994, now seen corresponding path program 40 times [2020-01-16 18:02:41,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:41,498 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383978766] [2020-01-16 18:02:41,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:41,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383978766] [2020-01-16 18:02:41,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:41,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:41,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248937644] [2020-01-16 18:02:41,713 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:41,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:41,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:41,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:41,714 INFO L87 Difference]: Start difference. First operand 351 states and 1114 transitions. Second operand 8 states. [2020-01-16 18:02:41,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:41,807 INFO L93 Difference]: Finished difference Result 651 states and 1791 transitions. [2020-01-16 18:02:41,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:41,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:41,809 INFO L225 Difference]: With dead ends: 651 [2020-01-16 18:02:41,809 INFO L226 Difference]: Without dead ends: 609 [2020-01-16 18:02:41,810 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:41,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-01-16 18:02:41,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 345. [2020-01-16 18:02:41,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-01-16 18:02:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1100 transitions. [2020-01-16 18:02:41,819 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1100 transitions. Word has length 19 [2020-01-16 18:02:41,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:41,820 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 1100 transitions. [2020-01-16 18:02:41,820 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:41,820 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1100 transitions. [2020-01-16 18:02:41,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:41,821 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:41,821 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:41,822 INFO L426 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:41,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:41,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1215861966, now seen corresponding path program 41 times [2020-01-16 18:02:41,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:41,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566069433] [2020-01-16 18:02:41,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:42,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566069433] [2020-01-16 18:02:42,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:42,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:42,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409647780] [2020-01-16 18:02:42,035 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:42,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:42,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:42,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:42,036 INFO L87 Difference]: Start difference. First operand 345 states and 1100 transitions. Second operand 8 states. [2020-01-16 18:02:42,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:42,131 INFO L93 Difference]: Finished difference Result 643 states and 1772 transitions. [2020-01-16 18:02:42,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:42,131 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:42,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:42,133 INFO L225 Difference]: With dead ends: 643 [2020-01-16 18:02:42,133 INFO L226 Difference]: Without dead ends: 613 [2020-01-16 18:02:42,134 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2020-01-16 18:02:42,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 350. [2020-01-16 18:02:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-01-16 18:02:42,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1110 transitions. [2020-01-16 18:02:42,145 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1110 transitions. Word has length 19 [2020-01-16 18:02:42,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:42,145 INFO L478 AbstractCegarLoop]: Abstraction has 350 states and 1110 transitions. [2020-01-16 18:02:42,145 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:42,145 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1110 transitions. [2020-01-16 18:02:42,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:42,146 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:42,146 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:42,146 INFO L426 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:42,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:42,146 INFO L82 PathProgramCache]: Analyzing trace with hash -513185368, now seen corresponding path program 42 times [2020-01-16 18:02:42,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:42,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755755611] [2020-01-16 18:02:42,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:42,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:42,335 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755755611] [2020-01-16 18:02:42,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:42,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:42,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062185519] [2020-01-16 18:02:42,335 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:42,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:42,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:42,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:42,336 INFO L87 Difference]: Start difference. First operand 350 states and 1110 transitions. Second operand 8 states. [2020-01-16 18:02:42,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:42,430 INFO L93 Difference]: Finished difference Result 649 states and 1786 transitions. [2020-01-16 18:02:42,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:42,431 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:42,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:42,432 INFO L225 Difference]: With dead ends: 649 [2020-01-16 18:02:42,433 INFO L226 Difference]: Without dead ends: 605 [2020-01-16 18:02:42,433 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:42,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2020-01-16 18:02:42,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 342. [2020-01-16 18:02:42,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-01-16 18:02:42,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 1093 transitions. [2020-01-16 18:02:42,442 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 1093 transitions. Word has length 19 [2020-01-16 18:02:42,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:42,442 INFO L478 AbstractCegarLoop]: Abstraction has 342 states and 1093 transitions. [2020-01-16 18:02:42,442 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:42,442 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 1093 transitions. [2020-01-16 18:02:42,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:42,443 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:42,443 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:42,443 INFO L426 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:42,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:42,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1822419634, now seen corresponding path program 43 times [2020-01-16 18:02:42,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:42,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862776421] [2020-01-16 18:02:42,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:42,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862776421] [2020-01-16 18:02:42,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:42,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:42,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570856064] [2020-01-16 18:02:42,656 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:42,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:42,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:42,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:42,656 INFO L87 Difference]: Start difference. First operand 342 states and 1093 transitions. Second operand 8 states. [2020-01-16 18:02:42,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:42,737 INFO L93 Difference]: Finished difference Result 678 states and 1898 transitions. [2020-01-16 18:02:42,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:42,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:42,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:42,739 INFO L225 Difference]: With dead ends: 678 [2020-01-16 18:02:42,739 INFO L226 Difference]: Without dead ends: 638 [2020-01-16 18:02:42,740 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:42,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-01-16 18:02:42,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 353. [2020-01-16 18:02:42,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-01-16 18:02:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 1125 transitions. [2020-01-16 18:02:42,749 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 1125 transitions. Word has length 19 [2020-01-16 18:02:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:42,749 INFO L478 AbstractCegarLoop]: Abstraction has 353 states and 1125 transitions. [2020-01-16 18:02:42,749 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:42,749 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 1125 transitions. [2020-01-16 18:02:42,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:42,750 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:42,750 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:42,750 INFO L426 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:42,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:42,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1598212336, now seen corresponding path program 44 times [2020-01-16 18:02:42,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:42,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406990504] [2020-01-16 18:02:42,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:42,940 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406990504] [2020-01-16 18:02:42,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:42,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:42,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760282388] [2020-01-16 18:02:42,940 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:42,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:42,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:42,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:42,941 INFO L87 Difference]: Start difference. First operand 353 states and 1125 transitions. Second operand 8 states. [2020-01-16 18:02:43,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:43,050 INFO L93 Difference]: Finished difference Result 668 states and 1861 transitions. [2020-01-16 18:02:43,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:43,051 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:43,052 INFO L225 Difference]: With dead ends: 668 [2020-01-16 18:02:43,053 INFO L226 Difference]: Without dead ends: 632 [2020-01-16 18:02:43,053 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:43,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2020-01-16 18:02:43,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 347. [2020-01-16 18:02:43,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-01-16 18:02:43,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1108 transitions. [2020-01-16 18:02:43,067 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1108 transitions. Word has length 19 [2020-01-16 18:02:43,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:43,067 INFO L478 AbstractCegarLoop]: Abstraction has 347 states and 1108 transitions. [2020-01-16 18:02:43,067 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:43,067 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1108 transitions. [2020-01-16 18:02:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:43,069 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:43,069 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:43,069 INFO L426 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:43,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:43,070 INFO L82 PathProgramCache]: Analyzing trace with hash 411687860, now seen corresponding path program 45 times [2020-01-16 18:02:43,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:43,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748363449] [2020-01-16 18:02:43,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:43,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748363449] [2020-01-16 18:02:43,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:43,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:43,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387592268] [2020-01-16 18:02:43,248 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:43,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:43,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:43,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:43,249 INFO L87 Difference]: Start difference. First operand 347 states and 1108 transitions. Second operand 8 states. [2020-01-16 18:02:43,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:43,315 INFO L93 Difference]: Finished difference Result 690 states and 1937 transitions. [2020-01-16 18:02:43,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:43,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:43,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:43,317 INFO L225 Difference]: With dead ends: 690 [2020-01-16 18:02:43,317 INFO L226 Difference]: Without dead ends: 650 [2020-01-16 18:02:43,317 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:43,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-01-16 18:02:43,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 359. [2020-01-16 18:02:43,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-01-16 18:02:43,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 1139 transitions. [2020-01-16 18:02:43,328 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 1139 transitions. Word has length 19 [2020-01-16 18:02:43,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:43,328 INFO L478 AbstractCegarLoop]: Abstraction has 359 states and 1139 transitions. [2020-01-16 18:02:43,328 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:43,328 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 1139 transitions. [2020-01-16 18:02:43,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:43,329 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:43,329 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:43,329 INFO L426 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:43,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:43,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1380571900, now seen corresponding path program 46 times [2020-01-16 18:02:43,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:43,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59786784] [2020-01-16 18:02:43,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:43,526 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59786784] [2020-01-16 18:02:43,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:43,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:43,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261435280] [2020-01-16 18:02:43,527 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:43,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:43,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:43,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:43,527 INFO L87 Difference]: Start difference. First operand 359 states and 1139 transitions. Second operand 8 states. [2020-01-16 18:02:43,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:43,619 INFO L93 Difference]: Finished difference Result 686 states and 1913 transitions. [2020-01-16 18:02:43,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:43,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:43,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:43,621 INFO L225 Difference]: With dead ends: 686 [2020-01-16 18:02:43,621 INFO L226 Difference]: Without dead ends: 638 [2020-01-16 18:02:43,621 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:43,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-01-16 18:02:43,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 347. [2020-01-16 18:02:43,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-01-16 18:02:43,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1103 transitions. [2020-01-16 18:02:43,630 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1103 transitions. Word has length 19 [2020-01-16 18:02:43,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:43,630 INFO L478 AbstractCegarLoop]: Abstraction has 347 states and 1103 transitions. [2020-01-16 18:02:43,630 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:43,630 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1103 transitions. [2020-01-16 18:02:43,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:43,631 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:43,631 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:43,631 INFO L426 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:43,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:43,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1771460028, now seen corresponding path program 47 times [2020-01-16 18:02:43,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:43,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005756697] [2020-01-16 18:02:43,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:43,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:43,822 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005756697] [2020-01-16 18:02:43,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:43,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:43,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940721342] [2020-01-16 18:02:43,822 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:43,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:43,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:43,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:43,823 INFO L87 Difference]: Start difference. First operand 347 states and 1103 transitions. Second operand 8 states. [2020-01-16 18:02:43,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:43,926 INFO L93 Difference]: Finished difference Result 663 states and 1842 transitions. [2020-01-16 18:02:43,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:43,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:43,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:43,928 INFO L225 Difference]: With dead ends: 663 [2020-01-16 18:02:43,928 INFO L226 Difference]: Without dead ends: 633 [2020-01-16 18:02:43,928 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:43,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-01-16 18:02:43,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 352. [2020-01-16 18:02:43,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-01-16 18:02:43,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1113 transitions. [2020-01-16 18:02:43,936 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1113 transitions. Word has length 19 [2020-01-16 18:02:43,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:43,936 INFO L478 AbstractCegarLoop]: Abstraction has 352 states and 1113 transitions. [2020-01-16 18:02:43,937 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:43,937 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1113 transitions. [2020-01-16 18:02:43,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:43,937 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:43,937 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:43,937 INFO L426 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:43,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:43,938 INFO L82 PathProgramCache]: Analyzing trace with hash 42412694, now seen corresponding path program 48 times [2020-01-16 18:02:43,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:43,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233731213] [2020-01-16 18:02:43,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:44,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233731213] [2020-01-16 18:02:44,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:44,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:44,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820254874] [2020-01-16 18:02:44,134 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:44,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:44,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:44,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:44,134 INFO L87 Difference]: Start difference. First operand 352 states and 1113 transitions. Second operand 8 states. [2020-01-16 18:02:44,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:44,238 INFO L93 Difference]: Finished difference Result 669 states and 1856 transitions. [2020-01-16 18:02:44,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:44,238 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:44,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:44,240 INFO L225 Difference]: With dead ends: 669 [2020-01-16 18:02:44,240 INFO L226 Difference]: Without dead ends: 618 [2020-01-16 18:02:44,241 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:44,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-01-16 18:02:44,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 337. [2020-01-16 18:02:44,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-01-16 18:02:44,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 1082 transitions. [2020-01-16 18:02:44,250 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 1082 transitions. Word has length 19 [2020-01-16 18:02:44,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:44,251 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 1082 transitions. [2020-01-16 18:02:44,251 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:44,251 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 1082 transitions. [2020-01-16 18:02:44,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:44,252 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:44,252 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:44,252 INFO L426 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:44,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:44,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1950102064, now seen corresponding path program 49 times [2020-01-16 18:02:44,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:44,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988567153] [2020-01-16 18:02:44,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:44,483 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988567153] [2020-01-16 18:02:44,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:44,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:44,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656649486] [2020-01-16 18:02:44,484 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:44,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:44,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:44,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:44,484 INFO L87 Difference]: Start difference. First operand 337 states and 1082 transitions. Second operand 8 states. [2020-01-16 18:02:44,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:44,559 INFO L93 Difference]: Finished difference Result 648 states and 1785 transitions. [2020-01-16 18:02:44,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:44,560 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:44,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:44,562 INFO L225 Difference]: With dead ends: 648 [2020-01-16 18:02:44,562 INFO L226 Difference]: Without dead ends: 617 [2020-01-16 18:02:44,562 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:44,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-01-16 18:02:44,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 353. [2020-01-16 18:02:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-01-16 18:02:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 1124 transitions. [2020-01-16 18:02:44,575 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 1124 transitions. Word has length 19 [2020-01-16 18:02:44,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:44,575 INFO L478 AbstractCegarLoop]: Abstraction has 353 states and 1124 transitions. [2020-01-16 18:02:44,575 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:44,576 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 1124 transitions. [2020-01-16 18:02:44,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:44,577 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:44,577 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:44,577 INFO L426 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:44,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:44,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1575450878, now seen corresponding path program 50 times [2020-01-16 18:02:44,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:44,578 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566651149] [2020-01-16 18:02:44,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:44,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:44,818 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566651149] [2020-01-16 18:02:44,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:44,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:44,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124691579] [2020-01-16 18:02:44,819 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:44,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:44,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:44,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:44,819 INFO L87 Difference]: Start difference. First operand 353 states and 1124 transitions. Second operand 8 states. [2020-01-16 18:02:44,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:44,902 INFO L93 Difference]: Finished difference Result 657 states and 1808 transitions. [2020-01-16 18:02:44,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:44,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:44,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:44,903 INFO L225 Difference]: With dead ends: 657 [2020-01-16 18:02:44,903 INFO L226 Difference]: Without dead ends: 609 [2020-01-16 18:02:44,904 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:44,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-01-16 18:02:44,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 345. [2020-01-16 18:02:44,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-01-16 18:02:44,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1106 transitions. [2020-01-16 18:02:44,913 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1106 transitions. Word has length 19 [2020-01-16 18:02:44,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:44,913 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 1106 transitions. [2020-01-16 18:02:44,913 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:44,914 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1106 transitions. [2020-01-16 18:02:44,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:44,914 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:44,915 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:44,915 INFO L426 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:44,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:44,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1745500982, now seen corresponding path program 51 times [2020-01-16 18:02:44,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:44,915 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613182371] [2020-01-16 18:02:44,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:45,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:45,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613182371] [2020-01-16 18:02:45,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:45,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:45,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478237143] [2020-01-16 18:02:45,129 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:45,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:45,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:45,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:45,130 INFO L87 Difference]: Start difference. First operand 345 states and 1106 transitions. Second operand 8 states. [2020-01-16 18:02:45,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:45,192 INFO L93 Difference]: Finished difference Result 633 states and 1736 transitions. [2020-01-16 18:02:45,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:45,192 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:45,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:45,194 INFO L225 Difference]: With dead ends: 633 [2020-01-16 18:02:45,194 INFO L226 Difference]: Without dead ends: 602 [2020-01-16 18:02:45,194 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:45,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-01-16 18:02:45,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 348. [2020-01-16 18:02:45,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-01-16 18:02:45,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 1110 transitions. [2020-01-16 18:02:45,204 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 1110 transitions. Word has length 19 [2020-01-16 18:02:45,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:45,204 INFO L478 AbstractCegarLoop]: Abstraction has 348 states and 1110 transitions. [2020-01-16 18:02:45,204 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:45,204 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 1110 transitions. [2020-01-16 18:02:45,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:45,205 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:45,205 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:45,206 INFO L426 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:45,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:45,206 INFO L82 PathProgramCache]: Analyzing trace with hash 397739768, now seen corresponding path program 52 times [2020-01-16 18:02:45,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:45,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354798585] [2020-01-16 18:02:45,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:45,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354798585] [2020-01-16 18:02:45,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:45,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:45,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195389156] [2020-01-16 18:02:45,460 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:45,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:45,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:45,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:45,461 INFO L87 Difference]: Start difference. First operand 348 states and 1110 transitions. Second operand 8 states. [2020-01-16 18:02:45,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:45,540 INFO L93 Difference]: Finished difference Result 632 states and 1732 transitions. [2020-01-16 18:02:45,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:45,540 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:45,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:45,542 INFO L225 Difference]: With dead ends: 632 [2020-01-16 18:02:45,542 INFO L226 Difference]: Without dead ends: 599 [2020-01-16 18:02:45,542 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:45,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-01-16 18:02:45,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 345. [2020-01-16 18:02:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-01-16 18:02:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1103 transitions. [2020-01-16 18:02:45,561 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1103 transitions. Word has length 19 [2020-01-16 18:02:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:45,561 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 1103 transitions. [2020-01-16 18:02:45,561 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1103 transitions. [2020-01-16 18:02:45,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:45,562 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:45,562 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:45,562 INFO L426 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:45,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:45,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1151450280, now seen corresponding path program 53 times [2020-01-16 18:02:45,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:45,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821282629] [2020-01-16 18:02:45,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:45,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:45,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821282629] [2020-01-16 18:02:45,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:45,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:45,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550475087] [2020-01-16 18:02:45,751 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:45,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:45,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:45,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:45,752 INFO L87 Difference]: Start difference. First operand 345 states and 1103 transitions. Second operand 8 states. [2020-01-16 18:02:45,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:45,831 INFO L93 Difference]: Finished difference Result 654 states and 1804 transitions. [2020-01-16 18:02:45,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:45,831 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:45,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:45,833 INFO L225 Difference]: With dead ends: 654 [2020-01-16 18:02:45,833 INFO L226 Difference]: Without dead ends: 614 [2020-01-16 18:02:45,833 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:45,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2020-01-16 18:02:45,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 351. [2020-01-16 18:02:45,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-01-16 18:02:45,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1115 transitions. [2020-01-16 18:02:45,843 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1115 transitions. Word has length 19 [2020-01-16 18:02:45,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:45,843 INFO L478 AbstractCegarLoop]: Abstraction has 351 states and 1115 transitions. [2020-01-16 18:02:45,843 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:45,843 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1115 transitions. [2020-01-16 18:02:45,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:45,844 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:45,844 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:45,844 INFO L426 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:45,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:45,844 INFO L82 PathProgramCache]: Analyzing trace with hash 277114954, now seen corresponding path program 54 times [2020-01-16 18:02:45,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:45,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272540225] [2020-01-16 18:02:45,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:46,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272540225] [2020-01-16 18:02:46,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:46,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:46,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759818524] [2020-01-16 18:02:46,047 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:46,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:46,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:46,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:46,047 INFO L87 Difference]: Start difference. First operand 351 states and 1115 transitions. Second operand 8 states. [2020-01-16 18:02:46,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:46,139 INFO L93 Difference]: Finished difference Result 644 states and 1767 transitions. [2020-01-16 18:02:46,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:46,139 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:46,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:46,141 INFO L225 Difference]: With dead ends: 644 [2020-01-16 18:02:46,141 INFO L226 Difference]: Without dead ends: 604 [2020-01-16 18:02:46,141 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:46,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-01-16 18:02:46,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 341. [2020-01-16 18:02:46,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-01-16 18:02:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1094 transitions. [2020-01-16 18:02:46,150 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1094 transitions. Word has length 19 [2020-01-16 18:02:46,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:46,150 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 1094 transitions. [2020-01-16 18:02:46,151 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:46,151 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1094 transitions. [2020-01-16 18:02:46,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:46,152 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:46,152 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:46,152 INFO L426 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:46,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:46,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1499893780, now seen corresponding path program 55 times [2020-01-16 18:02:46,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:46,153 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456082583] [2020-01-16 18:02:46,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:46,400 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456082583] [2020-01-16 18:02:46,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:46,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:46,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792767207] [2020-01-16 18:02:46,400 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:46,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:46,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:46,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:46,401 INFO L87 Difference]: Start difference. First operand 341 states and 1094 transitions. Second operand 8 states. [2020-01-16 18:02:46,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:46,463 INFO L93 Difference]: Finished difference Result 658 states and 1820 transitions. [2020-01-16 18:02:46,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:46,464 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:46,465 INFO L225 Difference]: With dead ends: 658 [2020-01-16 18:02:46,465 INFO L226 Difference]: Without dead ends: 627 [2020-01-16 18:02:46,465 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:46,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-01-16 18:02:46,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 355. [2020-01-16 18:02:46,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-01-16 18:02:46,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 1129 transitions. [2020-01-16 18:02:46,474 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 1129 transitions. Word has length 19 [2020-01-16 18:02:46,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:46,474 INFO L478 AbstractCegarLoop]: Abstraction has 355 states and 1129 transitions. [2020-01-16 18:02:46,474 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:46,474 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 1129 transitions. [2020-01-16 18:02:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:46,475 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:46,475 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:46,476 INFO L426 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:46,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:46,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1874544966, now seen corresponding path program 56 times [2020-01-16 18:02:46,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:46,476 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29093581] [2020-01-16 18:02:46,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:46,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29093581] [2020-01-16 18:02:46,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:46,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:46,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547628208] [2020-01-16 18:02:46,705 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:46,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:46,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:46,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:46,705 INFO L87 Difference]: Start difference. First operand 355 states and 1129 transitions. Second operand 8 states. [2020-01-16 18:02:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:46,787 INFO L93 Difference]: Finished difference Result 667 states and 1843 transitions. [2020-01-16 18:02:46,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:46,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:46,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:46,789 INFO L225 Difference]: With dead ends: 667 [2020-01-16 18:02:46,790 INFO L226 Difference]: Without dead ends: 619 [2020-01-16 18:02:46,790 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:46,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-01-16 18:02:46,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 347. [2020-01-16 18:02:46,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-01-16 18:02:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1109 transitions. [2020-01-16 18:02:46,800 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1109 transitions. Word has length 19 [2020-01-16 18:02:46,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:46,800 INFO L478 AbstractCegarLoop]: Abstraction has 347 states and 1109 transitions. [2020-01-16 18:02:46,800 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:46,800 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1109 transitions. [2020-01-16 18:02:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:46,801 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:46,801 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:46,802 INFO L426 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:46,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:46,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1939279986, now seen corresponding path program 57 times [2020-01-16 18:02:46,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:46,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67042655] [2020-01-16 18:02:46,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:47,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67042655] [2020-01-16 18:02:47,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:47,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:47,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092519258] [2020-01-16 18:02:47,015 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:47,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:47,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:47,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:47,016 INFO L87 Difference]: Start difference. First operand 347 states and 1109 transitions. Second operand 8 states. [2020-01-16 18:02:47,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:47,097 INFO L93 Difference]: Finished difference Result 648 states and 1786 transitions. [2020-01-16 18:02:47,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:47,097 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:47,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:47,099 INFO L225 Difference]: With dead ends: 648 [2020-01-16 18:02:47,099 INFO L226 Difference]: Without dead ends: 617 [2020-01-16 18:02:47,099 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:47,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-01-16 18:02:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 352. [2020-01-16 18:02:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-01-16 18:02:47,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1118 transitions. [2020-01-16 18:02:47,108 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1118 transitions. Word has length 19 [2020-01-16 18:02:47,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:47,108 INFO L478 AbstractCegarLoop]: Abstraction has 352 states and 1118 transitions. [2020-01-16 18:02:47,109 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:47,109 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1118 transitions. [2020-01-16 18:02:47,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:47,110 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:47,110 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:47,110 INFO L426 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:47,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:47,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1604625216, now seen corresponding path program 58 times [2020-01-16 18:02:47,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:47,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789752567] [2020-01-16 18:02:47,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:47,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789752567] [2020-01-16 18:02:47,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:47,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:47,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758082257] [2020-01-16 18:02:47,327 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:47,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:47,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:47,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:47,327 INFO L87 Difference]: Start difference. First operand 352 states and 1118 transitions. Second operand 8 states. [2020-01-16 18:02:47,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:47,407 INFO L93 Difference]: Finished difference Result 650 states and 1790 transitions. [2020-01-16 18:02:47,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:47,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:47,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:47,409 INFO L225 Difference]: With dead ends: 650 [2020-01-16 18:02:47,409 INFO L226 Difference]: Without dead ends: 612 [2020-01-16 18:02:47,409 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:47,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-01-16 18:02:47,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 347. [2020-01-16 18:02:47,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-01-16 18:02:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1104 transitions. [2020-01-16 18:02:47,416 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1104 transitions. Word has length 19 [2020-01-16 18:02:47,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:47,416 INFO L478 AbstractCegarLoop]: Abstraction has 347 states and 1104 transitions. [2020-01-16 18:02:47,417 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:47,417 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1104 transitions. [2020-01-16 18:02:47,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:47,417 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:47,417 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:47,418 INFO L426 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:47,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:47,418 INFO L82 PathProgramCache]: Analyzing trace with hash 334504740, now seen corresponding path program 59 times [2020-01-16 18:02:47,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:47,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089443902] [2020-01-16 18:02:47,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:47,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:47,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089443902] [2020-01-16 18:02:47,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:47,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:47,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063080966] [2020-01-16 18:02:47,638 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:47,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:47,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:47,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:47,639 INFO L87 Difference]: Start difference. First operand 347 states and 1104 transitions. Second operand 8 states. [2020-01-16 18:02:47,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:47,728 INFO L93 Difference]: Finished difference Result 670 states and 1858 transitions. [2020-01-16 18:02:47,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:47,728 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:47,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:47,729 INFO L225 Difference]: With dead ends: 670 [2020-01-16 18:02:47,729 INFO L226 Difference]: Without dead ends: 630 [2020-01-16 18:02:47,730 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:47,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-01-16 18:02:47,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 356. [2020-01-16 18:02:47,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-01-16 18:02:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1126 transitions. [2020-01-16 18:02:47,737 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1126 transitions. Word has length 19 [2020-01-16 18:02:47,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:47,738 INFO L478 AbstractCegarLoop]: Abstraction has 356 states and 1126 transitions. [2020-01-16 18:02:47,738 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:47,738 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1126 transitions. [2020-01-16 18:02:47,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:47,738 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:47,739 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:47,739 INFO L426 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:47,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:47,739 INFO L82 PathProgramCache]: Analyzing trace with hash 333910094, now seen corresponding path program 60 times [2020-01-16 18:02:47,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:47,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513953401] [2020-01-16 18:02:47,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:47,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:47,931 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513953401] [2020-01-16 18:02:47,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:47,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:47,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412754853] [2020-01-16 18:02:47,931 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:47,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:47,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:47,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:47,932 INFO L87 Difference]: Start difference. First operand 356 states and 1126 transitions. Second operand 8 states. [2020-01-16 18:02:48,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:48,035 INFO L93 Difference]: Finished difference Result 663 states and 1828 transitions. [2020-01-16 18:02:48,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:48,036 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:48,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:48,038 INFO L225 Difference]: With dead ends: 663 [2020-01-16 18:02:48,038 INFO L226 Difference]: Without dead ends: 615 [2020-01-16 18:02:48,039 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:48,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-01-16 18:02:48,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 341. [2020-01-16 18:02:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-01-16 18:02:48,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1090 transitions. [2020-01-16 18:02:48,048 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1090 transitions. Word has length 19 [2020-01-16 18:02:48,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:48,049 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 1090 transitions. [2020-01-16 18:02:48,049 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:48,049 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1090 transitions. [2020-01-16 18:02:48,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:48,050 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:48,050 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:48,050 INFO L426 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:48,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:48,051 INFO L82 PathProgramCache]: Analyzing trace with hash -985705328, now seen corresponding path program 61 times [2020-01-16 18:02:48,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:48,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984441] [2020-01-16 18:02:48,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:48,281 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984441] [2020-01-16 18:02:48,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:48,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:48,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992711117] [2020-01-16 18:02:48,282 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:48,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:48,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:48,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:48,282 INFO L87 Difference]: Start difference. First operand 341 states and 1090 transitions. Second operand 8 states. [2020-01-16 18:02:48,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:48,350 INFO L93 Difference]: Finished difference Result 620 states and 1696 transitions. [2020-01-16 18:02:48,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:48,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:48,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:48,352 INFO L225 Difference]: With dead ends: 620 [2020-01-16 18:02:48,353 INFO L226 Difference]: Without dead ends: 589 [2020-01-16 18:02:48,353 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:48,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-01-16 18:02:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 347. [2020-01-16 18:02:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-01-16 18:02:48,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1104 transitions. [2020-01-16 18:02:48,363 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1104 transitions. Word has length 19 [2020-01-16 18:02:48,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:48,363 INFO L478 AbstractCegarLoop]: Abstraction has 347 states and 1104 transitions. [2020-01-16 18:02:48,363 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1104 transitions. [2020-01-16 18:02:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:48,365 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:48,365 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:48,365 INFO L426 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:48,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:48,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1157535422, now seen corresponding path program 62 times [2020-01-16 18:02:48,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:48,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316177347] [2020-01-16 18:02:48,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:48,577 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316177347] [2020-01-16 18:02:48,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:48,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:48,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730378292] [2020-01-16 18:02:48,578 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:48,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:48,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:48,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:48,579 INFO L87 Difference]: Start difference. First operand 347 states and 1104 transitions. Second operand 8 states. [2020-01-16 18:02:48,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:48,669 INFO L93 Difference]: Finished difference Result 619 states and 1692 transitions. [2020-01-16 18:02:48,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:48,670 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:48,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:48,672 INFO L225 Difference]: With dead ends: 619 [2020-01-16 18:02:48,672 INFO L226 Difference]: Without dead ends: 586 [2020-01-16 18:02:48,672 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:48,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-01-16 18:02:48,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 344. [2020-01-16 18:02:48,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-01-16 18:02:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1097 transitions. [2020-01-16 18:02:48,679 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 1097 transitions. Word has length 19 [2020-01-16 18:02:48,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:48,680 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 1097 transitions. [2020-01-16 18:02:48,680 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1097 transitions. [2020-01-16 18:02:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:48,681 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:48,681 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:48,681 INFO L426 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:48,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:48,681 INFO L82 PathProgramCache]: Analyzing trace with hash 108386260, now seen corresponding path program 63 times [2020-01-16 18:02:48,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:48,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953566430] [2020-01-16 18:02:48,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:48,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953566430] [2020-01-16 18:02:48,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:48,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:48,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789160132] [2020-01-16 18:02:48,888 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:48,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:48,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:48,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:48,889 INFO L87 Difference]: Start difference. First operand 344 states and 1097 transitions. Second operand 8 states. [2020-01-16 18:02:48,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:48,949 INFO L93 Difference]: Finished difference Result 625 states and 1710 transitions. [2020-01-16 18:02:48,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:48,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:48,950 INFO L225 Difference]: With dead ends: 625 [2020-01-16 18:02:48,950 INFO L226 Difference]: Without dead ends: 594 [2020-01-16 18:02:48,951 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:48,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-01-16 18:02:48,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 349. [2020-01-16 18:02:48,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-01-16 18:02:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1106 transitions. [2020-01-16 18:02:48,958 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1106 transitions. Word has length 19 [2020-01-16 18:02:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:48,958 INFO L478 AbstractCegarLoop]: Abstraction has 349 states and 1106 transitions. [2020-01-16 18:02:48,958 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1106 transitions. [2020-01-16 18:02:48,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:48,959 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:48,960 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:48,961 INFO L426 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:48,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:48,961 INFO L82 PathProgramCache]: Analyzing trace with hash -642675834, now seen corresponding path program 64 times [2020-01-16 18:02:48,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:48,961 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179781725] [2020-01-16 18:02:48,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:49,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179781725] [2020-01-16 18:02:49,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:49,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:49,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963623368] [2020-01-16 18:02:49,159 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:49,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:49,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:49,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:49,160 INFO L87 Difference]: Start difference. First operand 349 states and 1106 transitions. Second operand 8 states. [2020-01-16 18:02:49,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:49,248 INFO L93 Difference]: Finished difference Result 627 states and 1714 transitions. [2020-01-16 18:02:49,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:49,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:49,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:49,250 INFO L225 Difference]: With dead ends: 627 [2020-01-16 18:02:49,250 INFO L226 Difference]: Without dead ends: 589 [2020-01-16 18:02:49,251 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:49,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-01-16 18:02:49,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 344. [2020-01-16 18:02:49,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-01-16 18:02:49,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1094 transitions. [2020-01-16 18:02:49,259 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 1094 transitions. Word has length 19 [2020-01-16 18:02:49,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:49,259 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 1094 transitions. [2020-01-16 18:02:49,259 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1094 transitions. [2020-01-16 18:02:49,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:49,260 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:49,260 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:49,260 INFO L426 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:49,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:49,261 INFO L82 PathProgramCache]: Analyzing trace with hash 517971322, now seen corresponding path program 65 times [2020-01-16 18:02:49,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:49,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718364429] [2020-01-16 18:02:49,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:49,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:49,501 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718364429] [2020-01-16 18:02:49,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:49,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:49,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159860356] [2020-01-16 18:02:49,502 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:49,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:49,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:49,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:49,503 INFO L87 Difference]: Start difference. First operand 344 states and 1094 transitions. Second operand 8 states. [2020-01-16 18:02:49,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:49,612 INFO L93 Difference]: Finished difference Result 622 states and 1703 transitions. [2020-01-16 18:02:49,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:49,613 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:49,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:49,614 INFO L225 Difference]: With dead ends: 622 [2020-01-16 18:02:49,614 INFO L226 Difference]: Without dead ends: 592 [2020-01-16 18:02:49,614 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:49,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-01-16 18:02:49,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 348. [2020-01-16 18:02:49,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-01-16 18:02:49,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 1102 transitions. [2020-01-16 18:02:49,627 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 1102 transitions. Word has length 19 [2020-01-16 18:02:49,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:49,628 INFO L478 AbstractCegarLoop]: Abstraction has 348 states and 1102 transitions. [2020-01-16 18:02:49,628 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:49,628 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 1102 transitions. [2020-01-16 18:02:49,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:49,629 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:49,630 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:49,630 INFO L426 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:49,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:49,630 INFO L82 PathProgramCache]: Analyzing trace with hash -2066382666, now seen corresponding path program 66 times [2020-01-16 18:02:49,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:49,631 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366453602] [2020-01-16 18:02:49,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:49,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:49,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366453602] [2020-01-16 18:02:49,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:49,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:49,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15602543] [2020-01-16 18:02:49,856 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:49,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:49,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:49,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:49,856 INFO L87 Difference]: Start difference. First operand 348 states and 1102 transitions. Second operand 8 states. [2020-01-16 18:02:49,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:49,940 INFO L93 Difference]: Finished difference Result 625 states and 1709 transitions. [2020-01-16 18:02:49,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:49,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:49,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:49,942 INFO L225 Difference]: With dead ends: 625 [2020-01-16 18:02:49,942 INFO L226 Difference]: Without dead ends: 585 [2020-01-16 18:02:49,942 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:49,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-01-16 18:02:49,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 341. [2020-01-16 18:02:49,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-01-16 18:02:49,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1087 transitions. [2020-01-16 18:02:49,951 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1087 transitions. Word has length 19 [2020-01-16 18:02:49,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:49,951 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 1087 transitions. [2020-01-16 18:02:49,951 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:49,951 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1087 transitions. [2020-01-16 18:02:49,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:49,952 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:49,952 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:49,952 INFO L426 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:49,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:49,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1775607780, now seen corresponding path program 67 times [2020-01-16 18:02:49,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:49,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842173299] [2020-01-16 18:02:49,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:50,140 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842173299] [2020-01-16 18:02:50,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:50,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:50,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42488679] [2020-01-16 18:02:50,141 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:50,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:50,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:50,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:50,141 INFO L87 Difference]: Start difference. First operand 341 states and 1087 transitions. Second operand 8 states. [2020-01-16 18:02:50,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:50,221 INFO L93 Difference]: Finished difference Result 658 states and 1828 transitions. [2020-01-16 18:02:50,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:50,221 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:50,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:50,223 INFO L225 Difference]: With dead ends: 658 [2020-01-16 18:02:50,223 INFO L226 Difference]: Without dead ends: 618 [2020-01-16 18:02:50,223 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:50,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-01-16 18:02:50,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 351. [2020-01-16 18:02:50,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-01-16 18:02:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1115 transitions. [2020-01-16 18:02:50,230 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1115 transitions. Word has length 19 [2020-01-16 18:02:50,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:50,231 INFO L478 AbstractCegarLoop]: Abstraction has 351 states and 1115 transitions. [2020-01-16 18:02:50,231 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1115 transitions. [2020-01-16 18:02:50,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:50,232 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:50,232 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:50,232 INFO L426 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:50,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:50,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1645024190, now seen corresponding path program 68 times [2020-01-16 18:02:50,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:50,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292383843] [2020-01-16 18:02:50,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:50,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292383843] [2020-01-16 18:02:50,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:50,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:50,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571053861] [2020-01-16 18:02:50,434 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:50,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:50,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:50,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:50,434 INFO L87 Difference]: Start difference. First operand 351 states and 1115 transitions. Second operand 8 states. [2020-01-16 18:02:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:50,519 INFO L93 Difference]: Finished difference Result 648 states and 1791 transitions. [2020-01-16 18:02:50,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:50,519 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:50,521 INFO L225 Difference]: With dead ends: 648 [2020-01-16 18:02:50,521 INFO L226 Difference]: Without dead ends: 612 [2020-01-16 18:02:50,521 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:50,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-01-16 18:02:50,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 345. [2020-01-16 18:02:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-01-16 18:02:50,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1099 transitions. [2020-01-16 18:02:50,529 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1099 transitions. Word has length 19 [2020-01-16 18:02:50,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:50,529 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 1099 transitions. [2020-01-16 18:02:50,529 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:50,529 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1099 transitions. [2020-01-16 18:02:50,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:50,530 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:50,530 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:50,530 INFO L426 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:50,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:50,530 INFO L82 PathProgramCache]: Analyzing trace with hash -286202784, now seen corresponding path program 69 times [2020-01-16 18:02:50,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:50,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695982630] [2020-01-16 18:02:50,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:50,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695982630] [2020-01-16 18:02:50,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:50,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:50,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338258516] [2020-01-16 18:02:50,726 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:50,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:50,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:50,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:50,726 INFO L87 Difference]: Start difference. First operand 345 states and 1099 transitions. Second operand 8 states. [2020-01-16 18:02:50,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:50,812 INFO L93 Difference]: Finished difference Result 664 states and 1847 transitions. [2020-01-16 18:02:50,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:50,812 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:50,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:50,813 INFO L225 Difference]: With dead ends: 664 [2020-01-16 18:02:50,814 INFO L226 Difference]: Without dead ends: 624 [2020-01-16 18:02:50,814 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:50,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-01-16 18:02:50,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 354. [2020-01-16 18:02:50,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-01-16 18:02:50,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 1121 transitions. [2020-01-16 18:02:50,821 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 1121 transitions. Word has length 19 [2020-01-16 18:02:50,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:50,821 INFO L478 AbstractCegarLoop]: Abstraction has 354 states and 1121 transitions. [2020-01-16 18:02:50,822 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:50,822 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 1121 transitions. [2020-01-16 18:02:50,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:50,823 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:50,823 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:50,823 INFO L426 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:50,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:50,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1031499928, now seen corresponding path program 70 times [2020-01-16 18:02:50,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:50,823 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819794338] [2020-01-16 18:02:50,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:51,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:51,017 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819794338] [2020-01-16 18:02:51,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:51,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:51,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859255911] [2020-01-16 18:02:51,018 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:51,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:51,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:51,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:51,019 INFO L87 Difference]: Start difference. First operand 354 states and 1121 transitions. Second operand 8 states. [2020-01-16 18:02:51,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:51,105 INFO L93 Difference]: Finished difference Result 657 states and 1817 transitions. [2020-01-16 18:02:51,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:51,105 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:51,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:51,107 INFO L225 Difference]: With dead ends: 657 [2020-01-16 18:02:51,107 INFO L226 Difference]: Without dead ends: 615 [2020-01-16 18:02:51,107 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:51,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-01-16 18:02:51,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 345. [2020-01-16 18:02:51,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-01-16 18:02:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1095 transitions. [2020-01-16 18:02:51,114 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1095 transitions. Word has length 19 [2020-01-16 18:02:51,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:51,114 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 1095 transitions. [2020-01-16 18:02:51,114 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:51,114 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1095 transitions. [2020-01-16 18:02:51,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:51,115 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:51,115 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:51,115 INFO L426 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:51,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:51,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1073569384, now seen corresponding path program 71 times [2020-01-16 18:02:51,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:51,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727715903] [2020-01-16 18:02:51,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:51,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727715903] [2020-01-16 18:02:51,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:51,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:51,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013936100] [2020-01-16 18:02:51,320 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:51,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:51,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:51,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:51,321 INFO L87 Difference]: Start difference. First operand 345 states and 1095 transitions. Second operand 8 states. [2020-01-16 18:02:51,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:51,403 INFO L93 Difference]: Finished difference Result 639 states and 1762 transitions. [2020-01-16 18:02:51,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:51,403 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:51,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:51,405 INFO L225 Difference]: With dead ends: 639 [2020-01-16 18:02:51,405 INFO L226 Difference]: Without dead ends: 609 [2020-01-16 18:02:51,405 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:51,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-01-16 18:02:51,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 349. [2020-01-16 18:02:51,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-01-16 18:02:51,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1103 transitions. [2020-01-16 18:02:51,412 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1103 transitions. Word has length 19 [2020-01-16 18:02:51,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:51,412 INFO L478 AbstractCegarLoop]: Abstraction has 349 states and 1103 transitions. [2020-01-16 18:02:51,412 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:51,412 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1103 transitions. [2020-01-16 18:02:51,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:51,413 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:51,413 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:51,413 INFO L426 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:51,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:51,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1510784604, now seen corresponding path program 72 times [2020-01-16 18:02:51,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:51,413 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619484245] [2020-01-16 18:02:51,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:51,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619484245] [2020-01-16 18:02:51,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:51,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:51,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831406081] [2020-01-16 18:02:51,614 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:51,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:51,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:51,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:51,615 INFO L87 Difference]: Start difference. First operand 349 states and 1103 transitions. Second operand 8 states. [2020-01-16 18:02:51,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:51,701 INFO L93 Difference]: Finished difference Result 642 states and 1768 transitions. [2020-01-16 18:02:51,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:51,701 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:51,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:51,703 INFO L225 Difference]: With dead ends: 642 [2020-01-16 18:02:51,703 INFO L226 Difference]: Without dead ends: 597 [2020-01-16 18:02:51,703 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:51,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-01-16 18:02:51,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 337. [2020-01-16 18:02:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-01-16 18:02:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 1078 transitions. [2020-01-16 18:02:51,711 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 1078 transitions. Word has length 19 [2020-01-16 18:02:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:51,712 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 1078 transitions. [2020-01-16 18:02:51,712 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 1078 transitions. [2020-01-16 18:02:51,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:51,712 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:51,712 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:51,713 INFO L426 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:51,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:51,713 INFO L82 PathProgramCache]: Analyzing trace with hash 458482122, now seen corresponding path program 73 times [2020-01-16 18:02:51,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:51,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540037124] [2020-01-16 18:02:51,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:52,007 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540037124] [2020-01-16 18:02:52,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:52,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:52,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041562440] [2020-01-16 18:02:52,008 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:52,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:52,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:52,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:52,009 INFO L87 Difference]: Start difference. First operand 337 states and 1078 transitions. Second operand 8 states. [2020-01-16 18:02:52,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:52,097 INFO L93 Difference]: Finished difference Result 609 states and 1671 transitions. [2020-01-16 18:02:52,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:52,097 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:52,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:52,099 INFO L225 Difference]: With dead ends: 609 [2020-01-16 18:02:52,099 INFO L226 Difference]: Without dead ends: 578 [2020-01-16 18:02:52,100 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:52,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-01-16 18:02:52,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 346. [2020-01-16 18:02:52,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-01-16 18:02:52,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1105 transitions. [2020-01-16 18:02:52,114 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1105 transitions. Word has length 19 [2020-01-16 18:02:52,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:52,114 INFO L478 AbstractCegarLoop]: Abstraction has 346 states and 1105 transitions. [2020-01-16 18:02:52,114 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:52,115 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1105 transitions. [2020-01-16 18:02:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:52,116 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:52,116 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:52,116 INFO L426 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:52,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:52,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1693244424, now seen corresponding path program 74 times [2020-01-16 18:02:52,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:52,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364488738] [2020-01-16 18:02:52,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:52,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:52,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364488738] [2020-01-16 18:02:52,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:52,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:52,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082763299] [2020-01-16 18:02:52,385 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:52,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:52,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:52,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:52,385 INFO L87 Difference]: Start difference. First operand 346 states and 1105 transitions. Second operand 8 states. [2020-01-16 18:02:52,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:52,464 INFO L93 Difference]: Finished difference Result 608 states and 1667 transitions. [2020-01-16 18:02:52,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:52,465 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:52,466 INFO L225 Difference]: With dead ends: 608 [2020-01-16 18:02:52,466 INFO L226 Difference]: Without dead ends: 575 [2020-01-16 18:02:52,466 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:52,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-01-16 18:02:52,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 343. [2020-01-16 18:02:52,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-01-16 18:02:52,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1098 transitions. [2020-01-16 18:02:52,476 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1098 transitions. Word has length 19 [2020-01-16 18:02:52,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:52,476 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 1098 transitions. [2020-01-16 18:02:52,476 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:52,476 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1098 transitions. [2020-01-16 18:02:52,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:52,477 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:52,477 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:52,477 INFO L426 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:52,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:52,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1552573710, now seen corresponding path program 75 times [2020-01-16 18:02:52,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:52,478 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499783944] [2020-01-16 18:02:52,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:52,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499783944] [2020-01-16 18:02:52,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:52,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:52,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825393699] [2020-01-16 18:02:52,690 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:52,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:52,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:52,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:52,690 INFO L87 Difference]: Start difference. First operand 343 states and 1098 transitions. Second operand 8 states. [2020-01-16 18:02:52,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:52,754 INFO L93 Difference]: Finished difference Result 614 states and 1685 transitions. [2020-01-16 18:02:52,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:52,754 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:52,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:52,756 INFO L225 Difference]: With dead ends: 614 [2020-01-16 18:02:52,756 INFO L226 Difference]: Without dead ends: 583 [2020-01-16 18:02:52,756 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:52,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-01-16 18:02:52,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 348. [2020-01-16 18:02:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-01-16 18:02:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 1107 transitions. [2020-01-16 18:02:52,764 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 1107 transitions. Word has length 19 [2020-01-16 18:02:52,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:52,764 INFO L478 AbstractCegarLoop]: Abstraction has 348 states and 1107 transitions. [2020-01-16 18:02:52,764 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:52,764 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 1107 transitions. [2020-01-16 18:02:52,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:52,765 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:52,765 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:52,765 INFO L426 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:52,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:52,765 INFO L82 PathProgramCache]: Analyzing trace with hash 801511616, now seen corresponding path program 76 times [2020-01-16 18:02:52,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:52,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154613176] [2020-01-16 18:02:52,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:52,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154613176] [2020-01-16 18:02:52,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:52,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:52,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506279733] [2020-01-16 18:02:52,982 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:52,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:52,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:52,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:52,982 INFO L87 Difference]: Start difference. First operand 348 states and 1107 transitions. Second operand 8 states. [2020-01-16 18:02:53,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:53,070 INFO L93 Difference]: Finished difference Result 616 states and 1689 transitions. [2020-01-16 18:02:53,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:53,071 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:53,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:53,072 INFO L225 Difference]: With dead ends: 616 [2020-01-16 18:02:53,073 INFO L226 Difference]: Without dead ends: 578 [2020-01-16 18:02:53,073 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:53,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-01-16 18:02:53,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 343. [2020-01-16 18:02:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-01-16 18:02:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1095 transitions. [2020-01-16 18:02:53,080 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1095 transitions. Word has length 19 [2020-01-16 18:02:53,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:53,080 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 1095 transitions. [2020-01-16 18:02:53,080 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:53,080 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1095 transitions. [2020-01-16 18:02:53,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:53,081 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:53,081 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:53,081 INFO L426 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:53,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:53,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1962158772, now seen corresponding path program 77 times [2020-01-16 18:02:53,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:53,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191093727] [2020-01-16 18:02:53,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:53,299 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191093727] [2020-01-16 18:02:53,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:53,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:53,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645815745] [2020-01-16 18:02:53,300 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:53,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:53,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:53,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:53,301 INFO L87 Difference]: Start difference. First operand 343 states and 1095 transitions. Second operand 8 states. [2020-01-16 18:02:53,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:53,388 INFO L93 Difference]: Finished difference Result 611 states and 1678 transitions. [2020-01-16 18:02:53,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:53,388 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:53,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:53,390 INFO L225 Difference]: With dead ends: 611 [2020-01-16 18:02:53,390 INFO L226 Difference]: Without dead ends: 581 [2020-01-16 18:02:53,390 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:53,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-01-16 18:02:53,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 347. [2020-01-16 18:02:53,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-01-16 18:02:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1103 transitions. [2020-01-16 18:02:53,397 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1103 transitions. Word has length 19 [2020-01-16 18:02:53,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:53,397 INFO L478 AbstractCegarLoop]: Abstraction has 347 states and 1103 transitions. [2020-01-16 18:02:53,397 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:53,397 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1103 transitions. [2020-01-16 18:02:53,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:53,398 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:53,398 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:53,398 INFO L426 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:53,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:53,399 INFO L82 PathProgramCache]: Analyzing trace with hash -622195216, now seen corresponding path program 78 times [2020-01-16 18:02:53,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:53,399 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469159603] [2020-01-16 18:02:53,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:53,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:53,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469159603] [2020-01-16 18:02:53,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:53,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:53,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112324876] [2020-01-16 18:02:53,605 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:53,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:53,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:53,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:53,606 INFO L87 Difference]: Start difference. First operand 347 states and 1103 transitions. Second operand 8 states. [2020-01-16 18:02:53,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:53,693 INFO L93 Difference]: Finished difference Result 614 states and 1684 transitions. [2020-01-16 18:02:53,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:53,694 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:53,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:53,695 INFO L225 Difference]: With dead ends: 614 [2020-01-16 18:02:53,695 INFO L226 Difference]: Without dead ends: 574 [2020-01-16 18:02:53,696 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:53,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-01-16 18:02:53,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 340. [2020-01-16 18:02:53,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-01-16 18:02:53,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1088 transitions. [2020-01-16 18:02:53,703 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1088 transitions. Word has length 19 [2020-01-16 18:02:53,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:53,703 INFO L478 AbstractCegarLoop]: Abstraction has 340 states and 1088 transitions. [2020-01-16 18:02:53,703 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:53,703 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1088 transitions. [2020-01-16 18:02:53,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:53,704 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:53,704 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:53,704 INFO L426 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:53,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:53,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1910451096, now seen corresponding path program 79 times [2020-01-16 18:02:53,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:53,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178069306] [2020-01-16 18:02:53,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:53,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178069306] [2020-01-16 18:02:53,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:53,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:53,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733864270] [2020-01-16 18:02:53,935 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:53,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:53,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:53,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:53,935 INFO L87 Difference]: Start difference. First operand 340 states and 1088 transitions. Second operand 8 states. [2020-01-16 18:02:54,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:54,009 INFO L93 Difference]: Finished difference Result 614 states and 1683 transitions. [2020-01-16 18:02:54,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:54,009 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:54,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:54,010 INFO L225 Difference]: With dead ends: 614 [2020-01-16 18:02:54,011 INFO L226 Difference]: Without dead ends: 583 [2020-01-16 18:02:54,011 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-01-16 18:02:54,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 346. [2020-01-16 18:02:54,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-01-16 18:02:54,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1102 transitions. [2020-01-16 18:02:54,018 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1102 transitions. Word has length 19 [2020-01-16 18:02:54,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:54,018 INFO L478 AbstractCegarLoop]: Abstraction has 346 states and 1102 transitions. [2020-01-16 18:02:54,019 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:54,019 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1102 transitions. [2020-01-16 18:02:54,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:54,019 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:54,019 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:54,020 INFO L426 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:54,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:54,020 INFO L82 PathProgramCache]: Analyzing trace with hash 232789654, now seen corresponding path program 80 times [2020-01-16 18:02:54,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:54,020 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145612186] [2020-01-16 18:02:54,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:54,235 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145612186] [2020-01-16 18:02:54,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:54,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:54,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466731151] [2020-01-16 18:02:54,235 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:54,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:54,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:54,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:54,236 INFO L87 Difference]: Start difference. First operand 346 states and 1102 transitions. Second operand 8 states. [2020-01-16 18:02:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:54,317 INFO L93 Difference]: Finished difference Result 613 states and 1679 transitions. [2020-01-16 18:02:54,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:54,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:54,319 INFO L225 Difference]: With dead ends: 613 [2020-01-16 18:02:54,319 INFO L226 Difference]: Without dead ends: 580 [2020-01-16 18:02:54,319 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:54,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-01-16 18:02:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 343. [2020-01-16 18:02:54,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-01-16 18:02:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1095 transitions. [2020-01-16 18:02:54,327 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1095 transitions. Word has length 19 [2020-01-16 18:02:54,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:54,327 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 1095 transitions. [2020-01-16 18:02:54,327 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:54,327 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1095 transitions. [2020-01-16 18:02:54,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:54,328 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:54,328 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:54,328 INFO L426 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:54,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:54,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1878169934, now seen corresponding path program 81 times [2020-01-16 18:02:54,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:54,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011871942] [2020-01-16 18:02:54,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:54,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011871942] [2020-01-16 18:02:54,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:54,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:54,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304514775] [2020-01-16 18:02:54,523 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:54,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:54,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:54,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:54,524 INFO L87 Difference]: Start difference. First operand 343 states and 1095 transitions. Second operand 8 states. [2020-01-16 18:02:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:54,604 INFO L93 Difference]: Finished difference Result 623 states and 1709 transitions. [2020-01-16 18:02:54,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:54,605 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:54,606 INFO L225 Difference]: With dead ends: 623 [2020-01-16 18:02:54,606 INFO L226 Difference]: Without dead ends: 592 [2020-01-16 18:02:54,606 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:54,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-01-16 18:02:54,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 349. [2020-01-16 18:02:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-01-16 18:02:54,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1106 transitions. [2020-01-16 18:02:54,614 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1106 transitions. Word has length 19 [2020-01-16 18:02:54,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:54,614 INFO L478 AbstractCegarLoop]: Abstraction has 349 states and 1106 transitions. [2020-01-16 18:02:54,615 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:54,615 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1106 transitions. [2020-01-16 18:02:54,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:54,616 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:54,616 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:54,616 INFO L426 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:54,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:54,616 INFO L82 PathProgramCache]: Analyzing trace with hash 901965184, now seen corresponding path program 82 times [2020-01-16 18:02:54,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:54,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156105814] [2020-01-16 18:02:54,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:54,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156105814] [2020-01-16 18:02:54,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:54,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:54,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316881693] [2020-01-16 18:02:54,939 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:54,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:54,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:54,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:54,941 INFO L87 Difference]: Start difference. First operand 349 states and 1106 transitions. Second operand 8 states. [2020-01-16 18:02:55,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:55,028 INFO L93 Difference]: Finished difference Result 628 states and 1721 transitions. [2020-01-16 18:02:55,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:55,029 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:55,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:55,030 INFO L225 Difference]: With dead ends: 628 [2020-01-16 18:02:55,030 INFO L226 Difference]: Without dead ends: 586 [2020-01-16 18:02:55,030 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:55,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-01-16 18:02:55,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 343. [2020-01-16 18:02:55,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-01-16 18:02:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1092 transitions. [2020-01-16 18:02:55,037 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1092 transitions. Word has length 19 [2020-01-16 18:02:55,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:55,037 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 1092 transitions. [2020-01-16 18:02:55,037 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1092 transitions. [2020-01-16 18:02:55,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:55,038 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:55,038 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:55,039 INFO L426 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:55,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:55,039 INFO L82 PathProgramCache]: Analyzing trace with hash 348431156, now seen corresponding path program 83 times [2020-01-16 18:02:55,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:55,039 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165527216] [2020-01-16 18:02:55,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:55,220 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165527216] [2020-01-16 18:02:55,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:55,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:55,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83341769] [2020-01-16 18:02:55,221 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:55,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:55,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:55,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:55,222 INFO L87 Difference]: Start difference. First operand 343 states and 1092 transitions. Second operand 8 states. [2020-01-16 18:02:55,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:55,314 INFO L93 Difference]: Finished difference Result 620 states and 1702 transitions. [2020-01-16 18:02:55,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:55,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:55,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:55,316 INFO L225 Difference]: With dead ends: 620 [2020-01-16 18:02:55,316 INFO L226 Difference]: Without dead ends: 590 [2020-01-16 18:02:55,317 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:55,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-01-16 18:02:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 348. [2020-01-16 18:02:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-01-16 18:02:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 1102 transitions. [2020-01-16 18:02:55,325 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 1102 transitions. Word has length 19 [2020-01-16 18:02:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:55,325 INFO L478 AbstractCegarLoop]: Abstraction has 348 states and 1102 transitions. [2020-01-16 18:02:55,325 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 1102 transitions. [2020-01-16 18:02:55,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:55,326 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:55,326 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:55,326 INFO L426 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:55,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:55,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1380616178, now seen corresponding path program 84 times [2020-01-16 18:02:55,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:55,327 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379253287] [2020-01-16 18:02:55,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:55,530 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379253287] [2020-01-16 18:02:55,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:55,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:55,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697418481] [2020-01-16 18:02:55,531 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:55,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:55,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:55,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:55,531 INFO L87 Difference]: Start difference. First operand 348 states and 1102 transitions. Second operand 8 states. [2020-01-16 18:02:55,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:55,619 INFO L93 Difference]: Finished difference Result 626 states and 1716 transitions. [2020-01-16 18:02:55,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:55,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:55,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:55,621 INFO L225 Difference]: With dead ends: 626 [2020-01-16 18:02:55,621 INFO L226 Difference]: Without dead ends: 582 [2020-01-16 18:02:55,621 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:55,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-01-16 18:02:55,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 340. [2020-01-16 18:02:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-01-16 18:02:55,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1085 transitions. [2020-01-16 18:02:55,628 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1085 transitions. Word has length 19 [2020-01-16 18:02:55,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:55,628 INFO L478 AbstractCegarLoop]: Abstraction has 340 states and 1085 transitions. [2020-01-16 18:02:55,628 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:55,629 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1085 transitions. [2020-01-16 18:02:55,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:55,629 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:55,629 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:55,630 INFO L426 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:55,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:55,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1259258648, now seen corresponding path program 85 times [2020-01-16 18:02:55,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:55,630 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779845154] [2020-01-16 18:02:55,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:55,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779845154] [2020-01-16 18:02:55,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:55,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:55,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699596593] [2020-01-16 18:02:55,852 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:55,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:55,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:55,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:55,852 INFO L87 Difference]: Start difference. First operand 340 states and 1085 transitions. Second operand 8 states. [2020-01-16 18:02:55,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:55,936 INFO L93 Difference]: Finished difference Result 629 states and 1736 transitions. [2020-01-16 18:02:55,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:55,936 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:55,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:55,937 INFO L225 Difference]: With dead ends: 629 [2020-01-16 18:02:55,937 INFO L226 Difference]: Without dead ends: 598 [2020-01-16 18:02:55,938 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:55,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-01-16 18:02:55,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 350. [2020-01-16 18:02:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-01-16 18:02:55,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1113 transitions. [2020-01-16 18:02:55,946 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1113 transitions. Word has length 19 [2020-01-16 18:02:55,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:55,946 INFO L478 AbstractCegarLoop]: Abstraction has 350 states and 1113 transitions. [2020-01-16 18:02:55,946 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:55,946 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1113 transitions. [2020-01-16 18:02:55,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:55,947 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:55,947 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:55,947 INFO L426 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:55,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:55,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2010320742, now seen corresponding path program 86 times [2020-01-16 18:02:55,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:55,948 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791976640] [2020-01-16 18:02:55,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:56,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791976640] [2020-01-16 18:02:56,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:56,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:56,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255607185] [2020-01-16 18:02:56,182 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:56,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:56,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:56,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:56,183 INFO L87 Difference]: Start difference. First operand 350 states and 1113 transitions. Second operand 8 states. [2020-01-16 18:02:56,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:56,270 INFO L93 Difference]: Finished difference Result 631 states and 1740 transitions. [2020-01-16 18:02:56,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:56,270 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:56,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:56,272 INFO L225 Difference]: With dead ends: 631 [2020-01-16 18:02:56,272 INFO L226 Difference]: Without dead ends: 593 [2020-01-16 18:02:56,272 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:56,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-01-16 18:02:56,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 345. [2020-01-16 18:02:56,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-01-16 18:02:56,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1099 transitions. [2020-01-16 18:02:56,279 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1099 transitions. Word has length 19 [2020-01-16 18:02:56,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:56,279 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 1099 transitions. [2020-01-16 18:02:56,279 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:56,279 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1099 transitions. [2020-01-16 18:02:56,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:56,280 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:56,280 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:56,280 INFO L426 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:56,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:56,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1435270794, now seen corresponding path program 87 times [2020-01-16 18:02:56,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:56,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878773049] [2020-01-16 18:02:56,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:56,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:56,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878773049] [2020-01-16 18:02:56,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:56,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:56,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419081448] [2020-01-16 18:02:56,481 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:56,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:56,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:56,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:56,481 INFO L87 Difference]: Start difference. First operand 345 states and 1099 transitions. Second operand 8 states. [2020-01-16 18:02:56,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:56,553 INFO L93 Difference]: Finished difference Result 633 states and 1743 transitions. [2020-01-16 18:02:56,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:56,554 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:56,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:56,555 INFO L225 Difference]: With dead ends: 633 [2020-01-16 18:02:56,555 INFO L226 Difference]: Without dead ends: 602 [2020-01-16 18:02:56,556 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:56,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-01-16 18:02:56,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 351. [2020-01-16 18:02:56,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-01-16 18:02:56,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1110 transitions. [2020-01-16 18:02:56,564 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1110 transitions. Word has length 19 [2020-01-16 18:02:56,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:56,564 INFO L478 AbstractCegarLoop]: Abstraction has 351 states and 1110 transitions. [2020-01-16 18:02:56,564 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:56,564 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1110 transitions. [2020-01-16 18:02:56,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:56,565 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:56,565 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:56,565 INFO L426 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:56,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:56,565 INFO L82 PathProgramCache]: Analyzing trace with hash 459066044, now seen corresponding path program 88 times [2020-01-16 18:02:56,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:56,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147509414] [2020-01-16 18:02:56,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:56,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:56,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147509414] [2020-01-16 18:02:56,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:56,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:56,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985746932] [2020-01-16 18:02:56,764 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:56,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:56,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:56,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:56,764 INFO L87 Difference]: Start difference. First operand 351 states and 1110 transitions. Second operand 8 states. [2020-01-16 18:02:56,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:56,850 INFO L93 Difference]: Finished difference Result 638 states and 1755 transitions. [2020-01-16 18:02:56,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:56,850 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:56,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:56,851 INFO L225 Difference]: With dead ends: 638 [2020-01-16 18:02:56,852 INFO L226 Difference]: Without dead ends: 596 [2020-01-16 18:02:56,852 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:56,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-01-16 18:02:56,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 345. [2020-01-16 18:02:56,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-01-16 18:02:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1094 transitions. [2020-01-16 18:02:56,862 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1094 transitions. Word has length 19 [2020-01-16 18:02:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:56,862 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 1094 transitions. [2020-01-16 18:02:56,862 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:56,862 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1094 transitions. [2020-01-16 18:02:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:56,863 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:56,863 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:56,864 INFO L426 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:56,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:56,864 INFO L82 PathProgramCache]: Analyzing trace with hash 2087070376, now seen corresponding path program 89 times [2020-01-16 18:02:56,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:56,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649645549] [2020-01-16 18:02:56,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:57,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649645549] [2020-01-16 18:02:57,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:57,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:57,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759126023] [2020-01-16 18:02:57,090 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:57,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:57,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:57,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:57,091 INFO L87 Difference]: Start difference. First operand 345 states and 1094 transitions. Second operand 8 states. [2020-01-16 18:02:57,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:57,194 INFO L93 Difference]: Finished difference Result 639 states and 1767 transitions. [2020-01-16 18:02:57,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:57,195 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:57,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:57,196 INFO L225 Difference]: With dead ends: 639 [2020-01-16 18:02:57,196 INFO L226 Difference]: Without dead ends: 606 [2020-01-16 18:02:57,196 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:57,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-01-16 18:02:57,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 353. [2020-01-16 18:02:57,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-01-16 18:02:57,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 1114 transitions. [2020-01-16 18:02:57,207 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 1114 transitions. Word has length 19 [2020-01-16 18:02:57,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:57,207 INFO L478 AbstractCegarLoop]: Abstraction has 353 states and 1114 transitions. [2020-01-16 18:02:57,207 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 1114 transitions. [2020-01-16 18:02:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:57,208 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:57,208 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:57,209 INFO L426 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:57,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:57,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1349022390, now seen corresponding path program 90 times [2020-01-16 18:02:57,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:57,209 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187452345] [2020-01-16 18:02:57,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:57,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187452345] [2020-01-16 18:02:57,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:57,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:57,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456397210] [2020-01-16 18:02:57,408 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:57,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:57,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:57,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:57,408 INFO L87 Difference]: Start difference. First operand 353 states and 1114 transitions. Second operand 8 states. [2020-01-16 18:02:57,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:57,501 INFO L93 Difference]: Finished difference Result 642 states and 1768 transitions. [2020-01-16 18:02:57,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:57,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:57,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:57,503 INFO L225 Difference]: With dead ends: 642 [2020-01-16 18:02:57,503 INFO L226 Difference]: Without dead ends: 593 [2020-01-16 18:02:57,503 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:57,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-01-16 18:02:57,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 340. [2020-01-16 18:02:57,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-01-16 18:02:57,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1082 transitions. [2020-01-16 18:02:57,511 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1082 transitions. Word has length 19 [2020-01-16 18:02:57,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:57,511 INFO L478 AbstractCegarLoop]: Abstraction has 340 states and 1082 transitions. [2020-01-16 18:02:57,511 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:57,511 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1082 transitions. [2020-01-16 18:02:57,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:57,512 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:57,512 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:57,512 INFO L426 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:57,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1252078038, now seen corresponding path program 91 times [2020-01-16 18:02:57,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:57,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787881722] [2020-01-16 18:02:57,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:57,717 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787881722] [2020-01-16 18:02:57,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:57,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:57,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271964837] [2020-01-16 18:02:57,718 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:57,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:57,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:57,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:57,718 INFO L87 Difference]: Start difference. First operand 340 states and 1082 transitions. Second operand 8 states. [2020-01-16 18:02:57,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:57,804 INFO L93 Difference]: Finished difference Result 622 states and 1721 transitions. [2020-01-16 18:02:57,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:57,805 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:57,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:57,806 INFO L225 Difference]: With dead ends: 622 [2020-01-16 18:02:57,806 INFO L226 Difference]: Without dead ends: 592 [2020-01-16 18:02:57,807 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:57,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-01-16 18:02:57,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 348. [2020-01-16 18:02:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-01-16 18:02:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 1106 transitions. [2020-01-16 18:02:57,814 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 1106 transitions. Word has length 19 [2020-01-16 18:02:57,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:57,814 INFO L478 AbstractCegarLoop]: Abstraction has 348 states and 1106 transitions. [2020-01-16 18:02:57,814 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:57,815 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 1106 transitions. [2020-01-16 18:02:57,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:57,815 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:57,815 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:57,815 INFO L426 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:57,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:57,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1332275950, now seen corresponding path program 92 times [2020-01-16 18:02:57,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:57,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215713196] [2020-01-16 18:02:57,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:58,022 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215713196] [2020-01-16 18:02:58,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:58,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:58,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664795356] [2020-01-16 18:02:58,023 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:58,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:58,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:58,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:58,023 INFO L87 Difference]: Start difference. First operand 348 states and 1106 transitions. Second operand 8 states. [2020-01-16 18:02:58,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:58,118 INFO L93 Difference]: Finished difference Result 625 states and 1727 transitions. [2020-01-16 18:02:58,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:58,119 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:58,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:58,120 INFO L225 Difference]: With dead ends: 625 [2020-01-16 18:02:58,120 INFO L226 Difference]: Without dead ends: 588 [2020-01-16 18:02:58,120 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-01-16 18:02:58,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 344. [2020-01-16 18:02:58,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-01-16 18:02:58,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1094 transitions. [2020-01-16 18:02:58,126 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 1094 transitions. Word has length 19 [2020-01-16 18:02:58,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:58,126 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 1094 transitions. [2020-01-16 18:02:58,126 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1094 transitions. [2020-01-16 18:02:58,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:58,127 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:58,127 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:58,127 INFO L426 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:58,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:58,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1996780536, now seen corresponding path program 93 times [2020-01-16 18:02:58,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:58,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230916674] [2020-01-16 18:02:58,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:58,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230916674] [2020-01-16 18:02:58,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:58,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:58,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143908800] [2020-01-16 18:02:58,317 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:58,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:58,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:58,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:58,318 INFO L87 Difference]: Start difference. First operand 344 states and 1094 transitions. Second operand 8 states. [2020-01-16 18:02:58,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:58,428 INFO L93 Difference]: Finished difference Result 626 states and 1729 transitions. [2020-01-16 18:02:58,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:58,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:58,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:58,429 INFO L225 Difference]: With dead ends: 626 [2020-01-16 18:02:58,429 INFO L226 Difference]: Without dead ends: 596 [2020-01-16 18:02:58,429 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-01-16 18:02:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 349. [2020-01-16 18:02:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-01-16 18:02:58,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1104 transitions. [2020-01-16 18:02:58,437 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1104 transitions. Word has length 19 [2020-01-16 18:02:58,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:58,437 INFO L478 AbstractCegarLoop]: Abstraction has 349 states and 1104 transitions. [2020-01-16 18:02:58,437 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:58,437 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1104 transitions. [2020-01-16 18:02:58,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:58,438 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:58,438 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:58,438 INFO L426 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:58,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:58,438 INFO L82 PathProgramCache]: Analyzing trace with hash 267733202, now seen corresponding path program 94 times [2020-01-16 18:02:58,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:58,438 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119606927] [2020-01-16 18:02:58,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:58,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119606927] [2020-01-16 18:02:58,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:58,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:58,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589734625] [2020-01-16 18:02:58,637 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:58,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:58,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:58,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:58,637 INFO L87 Difference]: Start difference. First operand 349 states and 1104 transitions. Second operand 8 states. [2020-01-16 18:02:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:58,723 INFO L93 Difference]: Finished difference Result 632 states and 1743 transitions. [2020-01-16 18:02:58,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:58,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:58,725 INFO L225 Difference]: With dead ends: 632 [2020-01-16 18:02:58,726 INFO L226 Difference]: Without dead ends: 591 [2020-01-16 18:02:58,726 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-01-16 18:02:58,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 344. [2020-01-16 18:02:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-01-16 18:02:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1090 transitions. [2020-01-16 18:02:58,733 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 1090 transitions. Word has length 19 [2020-01-16 18:02:58,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:58,733 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 1090 transitions. [2020-01-16 18:02:58,733 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:58,733 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1090 transitions. [2020-01-16 18:02:58,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:58,734 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:58,734 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:58,734 INFO L426 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:58,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:58,734 INFO L82 PathProgramCache]: Analyzing trace with hash 901831544, now seen corresponding path program 95 times [2020-01-16 18:02:58,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:58,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688760872] [2020-01-16 18:02:58,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:58,989 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688760872] [2020-01-16 18:02:58,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:58,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:58,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750072234] [2020-01-16 18:02:58,990 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:58,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:58,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:58,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:58,991 INFO L87 Difference]: Start difference. First operand 344 states and 1090 transitions. Second operand 8 states. [2020-01-16 18:02:59,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:59,078 INFO L93 Difference]: Finished difference Result 635 states and 1758 transitions. [2020-01-16 18:02:59,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:59,079 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:59,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:59,080 INFO L225 Difference]: With dead ends: 635 [2020-01-16 18:02:59,080 INFO L226 Difference]: Without dead ends: 602 [2020-01-16 18:02:59,080 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:59,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-01-16 18:02:59,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 352. [2020-01-16 18:02:59,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-01-16 18:02:59,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1110 transitions. [2020-01-16 18:02:59,095 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1110 transitions. Word has length 19 [2020-01-16 18:02:59,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:59,095 INFO L478 AbstractCegarLoop]: Abstraction has 352 states and 1110 transitions. [2020-01-16 18:02:59,095 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:59,095 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1110 transitions. [2020-01-16 18:02:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:59,096 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:59,096 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:59,097 INFO L426 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:59,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:59,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1757138198, now seen corresponding path program 96 times [2020-01-16 18:02:59,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:59,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845686726] [2020-01-16 18:02:59,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:59,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845686726] [2020-01-16 18:02:59,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:59,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:59,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348263341] [2020-01-16 18:02:59,298 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:59,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:59,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:59,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:59,299 INFO L87 Difference]: Start difference. First operand 352 states and 1110 transitions. Second operand 8 states. [2020-01-16 18:02:59,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:59,394 INFO L93 Difference]: Finished difference Result 638 states and 1759 transitions. [2020-01-16 18:02:59,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:59,395 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:59,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:59,396 INFO L225 Difference]: With dead ends: 638 [2020-01-16 18:02:59,397 INFO L226 Difference]: Without dead ends: 587 [2020-01-16 18:02:59,397 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:59,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-01-16 18:02:59,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 337. [2020-01-16 18:02:59,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-01-16 18:02:59,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 1075 transitions. [2020-01-16 18:02:59,406 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 1075 transitions. Word has length 19 [2020-01-16 18:02:59,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:59,406 INFO L478 AbstractCegarLoop]: Abstraction has 337 states and 1075 transitions. [2020-01-16 18:02:59,406 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:59,406 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 1075 transitions. [2020-01-16 18:02:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:59,407 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:59,407 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:59,408 INFO L426 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:59,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1665827752, now seen corresponding path program 97 times [2020-01-16 18:02:59,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:59,408 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365471686] [2020-01-16 18:02:59,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:59,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365471686] [2020-01-16 18:02:59,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:59,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:02:59,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855888155] [2020-01-16 18:02:59,635 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:02:59,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:59,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:02:59,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:59,636 INFO L87 Difference]: Start difference. First operand 337 states and 1075 transitions. Second operand 8 states. [2020-01-16 18:02:59,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:59,739 INFO L93 Difference]: Finished difference Result 676 states and 1927 transitions. [2020-01-16 18:02:59,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:02:59,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:02:59,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:59,742 INFO L225 Difference]: With dead ends: 676 [2020-01-16 18:02:59,742 INFO L226 Difference]: Without dead ends: 636 [2020-01-16 18:02:59,742 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:02:59,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-01-16 18:02:59,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 351. [2020-01-16 18:02:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-01-16 18:02:59,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1123 transitions. [2020-01-16 18:02:59,755 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1123 transitions. Word has length 19 [2020-01-16 18:02:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:59,756 INFO L478 AbstractCegarLoop]: Abstraction has 351 states and 1123 transitions. [2020-01-16 18:02:59,756 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:02:59,756 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1123 transitions. [2020-01-16 18:02:59,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:02:59,757 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:59,758 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:59,758 INFO L426 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:59,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:59,758 INFO L82 PathProgramCache]: Analyzing trace with hash 791492426, now seen corresponding path program 98 times [2020-01-16 18:02:59,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:59,759 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638202506] [2020-01-16 18:02:59,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:00,045 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638202506] [2020-01-16 18:03:00,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:00,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:00,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139340772] [2020-01-16 18:03:00,046 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:00,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:00,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:00,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:00,047 INFO L87 Difference]: Start difference. First operand 351 states and 1123 transitions. Second operand 8 states. [2020-01-16 18:03:00,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:00,129 INFO L93 Difference]: Finished difference Result 666 states and 1890 transitions. [2020-01-16 18:03:00,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:00,130 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:00,131 INFO L225 Difference]: With dead ends: 666 [2020-01-16 18:03:00,131 INFO L226 Difference]: Without dead ends: 630 [2020-01-16 18:03:00,132 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-01-16 18:03:00,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 345. [2020-01-16 18:03:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-01-16 18:03:00,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1107 transitions. [2020-01-16 18:03:00,141 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1107 transitions. Word has length 19 [2020-01-16 18:03:00,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:00,141 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 1107 transitions. [2020-01-16 18:03:00,141 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:00,141 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1107 transitions. [2020-01-16 18:03:00,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:00,142 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:00,142 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:00,142 INFO L426 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:00,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:00,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1139734548, now seen corresponding path program 99 times [2020-01-16 18:03:00,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:00,143 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388262324] [2020-01-16 18:03:00,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:00,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388262324] [2020-01-16 18:03:00,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:00,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:00,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013510073] [2020-01-16 18:03:00,339 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:00,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:00,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:00,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:00,339 INFO L87 Difference]: Start difference. First operand 345 states and 1107 transitions. Second operand 8 states. [2020-01-16 18:03:00,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:00,418 INFO L93 Difference]: Finished difference Result 682 states and 1946 transitions. [2020-01-16 18:03:00,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:00,418 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:00,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:00,420 INFO L225 Difference]: With dead ends: 682 [2020-01-16 18:03:00,420 INFO L226 Difference]: Without dead ends: 642 [2020-01-16 18:03:00,420 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:00,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-01-16 18:03:00,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 354. [2020-01-16 18:03:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-01-16 18:03:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 1129 transitions. [2020-01-16 18:03:00,427 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 1129 transitions. Word has length 19 [2020-01-16 18:03:00,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:00,427 INFO L478 AbstractCegarLoop]: Abstraction has 354 states and 1129 transitions. [2020-01-16 18:03:00,427 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:00,427 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 1129 transitions. [2020-01-16 18:03:00,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:00,428 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:00,428 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:00,428 INFO L426 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:00,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:00,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1885031692, now seen corresponding path program 100 times [2020-01-16 18:03:00,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:00,428 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494394813] [2020-01-16 18:03:00,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:00,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494394813] [2020-01-16 18:03:00,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:00,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:00,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158633791] [2020-01-16 18:03:00,609 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:00,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:00,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:00,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:00,610 INFO L87 Difference]: Start difference. First operand 354 states and 1129 transitions. Second operand 8 states. [2020-01-16 18:03:00,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:00,695 INFO L93 Difference]: Finished difference Result 675 states and 1916 transitions. [2020-01-16 18:03:00,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:00,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:00,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:00,697 INFO L225 Difference]: With dead ends: 675 [2020-01-16 18:03:00,698 INFO L226 Difference]: Without dead ends: 633 [2020-01-16 18:03:00,698 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-01-16 18:03:00,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 345. [2020-01-16 18:03:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-01-16 18:03:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1103 transitions. [2020-01-16 18:03:00,706 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1103 transitions. Word has length 19 [2020-01-16 18:03:00,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:00,706 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 1103 transitions. [2020-01-16 18:03:00,706 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1103 transitions. [2020-01-16 18:03:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:00,707 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:00,707 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:00,707 INFO L426 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:00,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:00,707 INFO L82 PathProgramCache]: Analyzing trace with hash 220037620, now seen corresponding path program 101 times [2020-01-16 18:03:00,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:00,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537648544] [2020-01-16 18:03:00,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:00,892 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537648544] [2020-01-16 18:03:00,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:00,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:00,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144676131] [2020-01-16 18:03:00,892 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:00,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:00,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:00,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:00,893 INFO L87 Difference]: Start difference. First operand 345 states and 1103 transitions. Second operand 8 states. [2020-01-16 18:03:00,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:00,970 INFO L93 Difference]: Finished difference Result 657 states and 1861 transitions. [2020-01-16 18:03:00,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:00,970 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:00,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:00,972 INFO L225 Difference]: With dead ends: 657 [2020-01-16 18:03:00,972 INFO L226 Difference]: Without dead ends: 627 [2020-01-16 18:03:00,972 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:00,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-01-16 18:03:00,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 349. [2020-01-16 18:03:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-01-16 18:03:00,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1111 transitions. [2020-01-16 18:03:00,980 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1111 transitions. Word has length 19 [2020-01-16 18:03:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:00,980 INFO L478 AbstractCegarLoop]: Abstraction has 349 states and 1111 transitions. [2020-01-16 18:03:00,980 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1111 transitions. [2020-01-16 18:03:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:00,981 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:00,981 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:00,981 INFO L426 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:00,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:00,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1930650928, now seen corresponding path program 102 times [2020-01-16 18:03:00,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:00,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669784231] [2020-01-16 18:03:00,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:01,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669784231] [2020-01-16 18:03:01,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:01,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:01,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994081380] [2020-01-16 18:03:01,164 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:01,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:01,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:01,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:01,165 INFO L87 Difference]: Start difference. First operand 349 states and 1111 transitions. Second operand 8 states. [2020-01-16 18:03:01,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:01,245 INFO L93 Difference]: Finished difference Result 660 states and 1867 transitions. [2020-01-16 18:03:01,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:01,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:01,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:01,247 INFO L225 Difference]: With dead ends: 660 [2020-01-16 18:03:01,247 INFO L226 Difference]: Without dead ends: 619 [2020-01-16 18:03:01,248 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:01,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-01-16 18:03:01,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 341. [2020-01-16 18:03:01,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-01-16 18:03:01,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1091 transitions. [2020-01-16 18:03:01,254 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1091 transitions. Word has length 19 [2020-01-16 18:03:01,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:01,255 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 1091 transitions. [2020-01-16 18:03:01,255 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:01,255 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1091 transitions. [2020-01-16 18:03:01,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:01,255 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:01,255 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:01,256 INFO L426 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:01,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:01,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1018198586, now seen corresponding path program 103 times [2020-01-16 18:03:01,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:01,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006461099] [2020-01-16 18:03:01,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:01,431 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006461099] [2020-01-16 18:03:01,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:01,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:01,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639742508] [2020-01-16 18:03:01,432 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:01,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:01,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:01,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:01,432 INFO L87 Difference]: Start difference. First operand 341 states and 1091 transitions. Second operand 8 states. [2020-01-16 18:03:01,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:01,522 INFO L93 Difference]: Finished difference Result 684 states and 1951 transitions. [2020-01-16 18:03:01,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:01,522 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:01,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:01,524 INFO L225 Difference]: With dead ends: 684 [2020-01-16 18:03:01,524 INFO L226 Difference]: Without dead ends: 644 [2020-01-16 18:03:01,524 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:01,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-01-16 18:03:01,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 352. [2020-01-16 18:03:01,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-01-16 18:03:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1123 transitions. [2020-01-16 18:03:01,531 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1123 transitions. Word has length 19 [2020-01-16 18:03:01,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:01,531 INFO L478 AbstractCegarLoop]: Abstraction has 352 states and 1123 transitions. [2020-01-16 18:03:01,531 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:01,532 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1123 transitions. [2020-01-16 18:03:01,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:01,532 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:01,532 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:01,532 INFO L426 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:01,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:01,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1892533912, now seen corresponding path program 104 times [2020-01-16 18:03:01,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:01,533 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227970630] [2020-01-16 18:03:01,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:01,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:01,709 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227970630] [2020-01-16 18:03:01,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:01,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:01,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451659076] [2020-01-16 18:03:01,710 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:01,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:01,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:01,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:01,710 INFO L87 Difference]: Start difference. First operand 352 states and 1123 transitions. Second operand 8 states. [2020-01-16 18:03:01,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:01,797 INFO L93 Difference]: Finished difference Result 674 states and 1914 transitions. [2020-01-16 18:03:01,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:01,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:01,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:01,799 INFO L225 Difference]: With dead ends: 674 [2020-01-16 18:03:01,799 INFO L226 Difference]: Without dead ends: 638 [2020-01-16 18:03:01,800 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:01,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-01-16 18:03:01,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 346. [2020-01-16 18:03:01,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-01-16 18:03:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1106 transitions. [2020-01-16 18:03:01,807 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1106 transitions. Word has length 19 [2020-01-16 18:03:01,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:01,807 INFO L478 AbstractCegarLoop]: Abstraction has 346 states and 1106 transitions. [2020-01-16 18:03:01,807 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:01,807 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1106 transitions. [2020-01-16 18:03:01,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:01,808 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:01,808 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:01,808 INFO L426 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:01,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:01,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1215908908, now seen corresponding path program 105 times [2020-01-16 18:03:01,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:01,809 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692529338] [2020-01-16 18:03:01,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:02,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692529338] [2020-01-16 18:03:02,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:02,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:02,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696870952] [2020-01-16 18:03:02,043 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:02,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:02,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:02,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:02,043 INFO L87 Difference]: Start difference. First operand 346 states and 1106 transitions. Second operand 8 states. [2020-01-16 18:03:02,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:02,151 INFO L93 Difference]: Finished difference Result 696 states and 1990 transitions. [2020-01-16 18:03:02,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:02,151 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:02,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:02,153 INFO L225 Difference]: With dead ends: 696 [2020-01-16 18:03:02,154 INFO L226 Difference]: Without dead ends: 656 [2020-01-16 18:03:02,154 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-01-16 18:03:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 358. [2020-01-16 18:03:02,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-01-16 18:03:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1137 transitions. [2020-01-16 18:03:02,166 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1137 transitions. Word has length 19 [2020-01-16 18:03:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:02,166 INFO L478 AbstractCegarLoop]: Abstraction has 358 states and 1137 transitions. [2020-01-16 18:03:02,166 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:02,167 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1137 transitions. [2020-01-16 18:03:02,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:02,168 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:02,168 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:02,168 INFO L426 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:02,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:02,169 INFO L82 PathProgramCache]: Analyzing trace with hash -2110174348, now seen corresponding path program 106 times [2020-01-16 18:03:02,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:02,169 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552699319] [2020-01-16 18:03:02,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:02,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:02,361 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552699319] [2020-01-16 18:03:02,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:02,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:02,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369910844] [2020-01-16 18:03:02,362 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:02,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:02,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:02,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:02,363 INFO L87 Difference]: Start difference. First operand 358 states and 1137 transitions. Second operand 8 states. [2020-01-16 18:03:02,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:02,443 INFO L93 Difference]: Finished difference Result 692 states and 1966 transitions. [2020-01-16 18:03:02,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:02,443 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:02,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:02,445 INFO L225 Difference]: With dead ends: 692 [2020-01-16 18:03:02,445 INFO L226 Difference]: Without dead ends: 644 [2020-01-16 18:03:02,445 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:02,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-01-16 18:03:02,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 346. [2020-01-16 18:03:02,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-01-16 18:03:02,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1101 transitions. [2020-01-16 18:03:02,452 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1101 transitions. Word has length 19 [2020-01-16 18:03:02,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:02,452 INFO L478 AbstractCegarLoop]: Abstraction has 346 states and 1101 transitions. [2020-01-16 18:03:02,452 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:02,452 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1101 transitions. [2020-01-16 18:03:02,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:02,453 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:02,453 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:02,453 INFO L426 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:02,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:02,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1719286220, now seen corresponding path program 107 times [2020-01-16 18:03:02,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:02,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105141225] [2020-01-16 18:03:02,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:02,631 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105141225] [2020-01-16 18:03:02,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:02,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:02,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059496321] [2020-01-16 18:03:02,631 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:02,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:02,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:02,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:02,632 INFO L87 Difference]: Start difference. First operand 346 states and 1101 transitions. Second operand 8 states. [2020-01-16 18:03:02,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:02,712 INFO L93 Difference]: Finished difference Result 669 states and 1895 transitions. [2020-01-16 18:03:02,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:02,713 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:02,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:02,714 INFO L225 Difference]: With dead ends: 669 [2020-01-16 18:03:02,714 INFO L226 Difference]: Without dead ends: 639 [2020-01-16 18:03:02,715 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:02,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2020-01-16 18:03:02,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 351. [2020-01-16 18:03:02,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-01-16 18:03:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1111 transitions. [2020-01-16 18:03:02,724 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1111 transitions. Word has length 19 [2020-01-16 18:03:02,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:02,724 INFO L478 AbstractCegarLoop]: Abstraction has 351 states and 1111 transitions. [2020-01-16 18:03:02,724 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:02,724 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1111 transitions. [2020-01-16 18:03:02,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:02,725 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:02,725 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:02,725 INFO L426 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:02,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:02,726 INFO L82 PathProgramCache]: Analyzing trace with hash 846633742, now seen corresponding path program 108 times [2020-01-16 18:03:02,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:02,726 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722814794] [2020-01-16 18:03:02,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:02,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722814794] [2020-01-16 18:03:02,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:02,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:02,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612952926] [2020-01-16 18:03:02,906 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:02,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:02,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:02,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:02,906 INFO L87 Difference]: Start difference. First operand 351 states and 1111 transitions. Second operand 8 states. [2020-01-16 18:03:02,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:02,987 INFO L93 Difference]: Finished difference Result 675 states and 1909 transitions. [2020-01-16 18:03:02,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:02,988 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:02,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:02,989 INFO L225 Difference]: With dead ends: 675 [2020-01-16 18:03:02,989 INFO L226 Difference]: Without dead ends: 629 [2020-01-16 18:03:02,989 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:02,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-01-16 18:03:02,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 341. [2020-01-16 18:03:02,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-01-16 18:03:02,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1087 transitions. [2020-01-16 18:03:02,996 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1087 transitions. Word has length 19 [2020-01-16 18:03:02,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:02,996 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 1087 transitions. [2020-01-16 18:03:02,996 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:02,996 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1087 transitions. [2020-01-16 18:03:02,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:02,997 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:02,997 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:02,997 INFO L426 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:02,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:02,997 INFO L82 PathProgramCache]: Analyzing trace with hash -601878970, now seen corresponding path program 109 times [2020-01-16 18:03:02,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:02,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046754523] [2020-01-16 18:03:02,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:03,194 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046754523] [2020-01-16 18:03:03,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:03,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:03,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649190638] [2020-01-16 18:03:03,194 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:03,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:03,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:03,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:03,195 INFO L87 Difference]: Start difference. First operand 341 states and 1087 transitions. Second operand 8 states. [2020-01-16 18:03:03,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:03,276 INFO L93 Difference]: Finished difference Result 702 states and 2022 transitions. [2020-01-16 18:03:03,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:03,276 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:03,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:03,278 INFO L225 Difference]: With dead ends: 702 [2020-01-16 18:03:03,278 INFO L226 Difference]: Without dead ends: 662 [2020-01-16 18:03:03,278 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:03,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-01-16 18:03:03,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 358. [2020-01-16 18:03:03,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-01-16 18:03:03,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1145 transitions. [2020-01-16 18:03:03,285 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1145 transitions. Word has length 19 [2020-01-16 18:03:03,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:03,285 INFO L478 AbstractCegarLoop]: Abstraction has 358 states and 1145 transitions. [2020-01-16 18:03:03,285 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:03,285 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1145 transitions. [2020-01-16 18:03:03,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:03,286 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:03,286 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:03,286 INFO L426 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:03,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:03,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1347176114, now seen corresponding path program 110 times [2020-01-16 18:03:03,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:03,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386235558] [2020-01-16 18:03:03,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:03,477 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386235558] [2020-01-16 18:03:03,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:03,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:03,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440313501] [2020-01-16 18:03:03,477 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:03,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:03,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:03,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:03,478 INFO L87 Difference]: Start difference. First operand 358 states and 1145 transitions. Second operand 8 states. [2020-01-16 18:03:03,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:03,559 INFO L93 Difference]: Finished difference Result 695 states and 1992 transitions. [2020-01-16 18:03:03,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:03,559 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:03,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:03,561 INFO L225 Difference]: With dead ends: 695 [2020-01-16 18:03:03,561 INFO L226 Difference]: Without dead ends: 653 [2020-01-16 18:03:03,561 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:03,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-01-16 18:03:03,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 349. [2020-01-16 18:03:03,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-01-16 18:03:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1115 transitions. [2020-01-16 18:03:03,568 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1115 transitions. Word has length 19 [2020-01-16 18:03:03,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:03,568 INFO L478 AbstractCegarLoop]: Abstraction has 349 states and 1115 transitions. [2020-01-16 18:03:03,568 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1115 transitions. [2020-01-16 18:03:03,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:03,569 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:03,569 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:03,569 INFO L426 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:03,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:03,570 INFO L82 PathProgramCache]: Analyzing trace with hash 142823528, now seen corresponding path program 111 times [2020-01-16 18:03:03,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:03,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505768131] [2020-01-16 18:03:03,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:03,791 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505768131] [2020-01-16 18:03:03,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:03,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:03,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862531204] [2020-01-16 18:03:03,792 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:03,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:03,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:03,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:03,792 INFO L87 Difference]: Start difference. First operand 349 states and 1115 transitions. Second operand 8 states. [2020-01-16 18:03:03,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:03,876 INFO L93 Difference]: Finished difference Result 708 states and 2035 transitions. [2020-01-16 18:03:03,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:03,876 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:03,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:03,878 INFO L225 Difference]: With dead ends: 708 [2020-01-16 18:03:03,878 INFO L226 Difference]: Without dead ends: 668 [2020-01-16 18:03:03,878 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:03,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2020-01-16 18:03:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 361. [2020-01-16 18:03:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-01-16 18:03:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 1146 transitions. [2020-01-16 18:03:03,886 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 1146 transitions. Word has length 19 [2020-01-16 18:03:03,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:03,887 INFO L478 AbstractCegarLoop]: Abstraction has 361 states and 1146 transitions. [2020-01-16 18:03:03,887 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:03,887 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 1146 transitions. [2020-01-16 18:03:03,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:03,887 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:03,888 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:03,888 INFO L426 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:03,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:03,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1111707568, now seen corresponding path program 112 times [2020-01-16 18:03:03,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:03,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752680954] [2020-01-16 18:03:03,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:04,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:04,092 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752680954] [2020-01-16 18:03:04,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:04,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:04,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514650318] [2020-01-16 18:03:04,093 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:04,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:04,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:04,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:04,094 INFO L87 Difference]: Start difference. First operand 361 states and 1146 transitions. Second operand 8 states. [2020-01-16 18:03:04,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:04,184 INFO L93 Difference]: Finished difference Result 704 states and 2011 transitions. [2020-01-16 18:03:04,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:04,184 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:04,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:04,186 INFO L225 Difference]: With dead ends: 704 [2020-01-16 18:03:04,186 INFO L226 Difference]: Without dead ends: 656 [2020-01-16 18:03:04,186 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:04,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-01-16 18:03:04,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 349. [2020-01-16 18:03:04,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-01-16 18:03:04,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1107 transitions. [2020-01-16 18:03:04,193 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1107 transitions. Word has length 19 [2020-01-16 18:03:04,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:04,194 INFO L478 AbstractCegarLoop]: Abstraction has 349 states and 1107 transitions. [2020-01-16 18:03:04,194 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:04,194 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1107 transitions. [2020-01-16 18:03:04,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:04,194 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:04,194 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:04,194 INFO L426 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:04,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:04,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1376541946, now seen corresponding path program 113 times [2020-01-16 18:03:04,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:04,195 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955356989] [2020-01-16 18:03:04,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:04,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955356989] [2020-01-16 18:03:04,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:04,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:04,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430681055] [2020-01-16 18:03:04,406 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:04,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:04,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:04,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:04,406 INFO L87 Difference]: Start difference. First operand 349 states and 1107 transitions. Second operand 8 states. [2020-01-16 18:03:04,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:04,494 INFO L93 Difference]: Finished difference Result 690 states and 1970 transitions. [2020-01-16 18:03:04,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:04,494 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:04,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:04,495 INFO L225 Difference]: With dead ends: 690 [2020-01-16 18:03:04,495 INFO L226 Difference]: Without dead ends: 657 [2020-01-16 18:03:04,496 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-01-16 18:03:04,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 357. [2020-01-16 18:03:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-01-16 18:03:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 1127 transitions. [2020-01-16 18:03:04,505 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 1127 transitions. Word has length 19 [2020-01-16 18:03:04,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:04,505 INFO L478 AbstractCegarLoop]: Abstraction has 357 states and 1127 transitions. [2020-01-16 18:03:04,505 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:04,505 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 1127 transitions. [2020-01-16 18:03:04,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:04,506 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:04,506 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:04,507 INFO L426 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:04,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:04,507 INFO L82 PathProgramCache]: Analyzing trace with hash -517667416, now seen corresponding path program 114 times [2020-01-16 18:03:04,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:04,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375511530] [2020-01-16 18:03:04,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:04,716 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375511530] [2020-01-16 18:03:04,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:04,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:04,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625291886] [2020-01-16 18:03:04,716 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:04,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:04,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:04,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:04,718 INFO L87 Difference]: Start difference. First operand 357 states and 1127 transitions. Second operand 8 states. [2020-01-16 18:03:04,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:04,801 INFO L93 Difference]: Finished difference Result 693 states and 1971 transitions. [2020-01-16 18:03:04,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:04,802 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:04,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:04,804 INFO L225 Difference]: With dead ends: 693 [2020-01-16 18:03:04,804 INFO L226 Difference]: Without dead ends: 641 [2020-01-16 18:03:04,804 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:04,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2020-01-16 18:03:04,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 341. [2020-01-16 18:03:04,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-01-16 18:03:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1083 transitions. [2020-01-16 18:03:04,812 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1083 transitions. Word has length 19 [2020-01-16 18:03:04,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:04,812 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 1083 transitions. [2020-01-16 18:03:04,812 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:04,812 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1083 transitions. [2020-01-16 18:03:04,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:04,813 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:04,813 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:04,813 INFO L426 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:04,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:04,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1295748776, now seen corresponding path program 115 times [2020-01-16 18:03:04,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:04,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229910470] [2020-01-16 18:03:04,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:05,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229910470] [2020-01-16 18:03:05,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:05,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:05,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716305118] [2020-01-16 18:03:05,032 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:05,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:05,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:05,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:05,033 INFO L87 Difference]: Start difference. First operand 341 states and 1083 transitions. Second operand 8 states. [2020-01-16 18:03:05,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:05,109 INFO L93 Difference]: Finished difference Result 651 states and 1839 transitions. [2020-01-16 18:03:05,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:05,110 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:05,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:05,111 INFO L225 Difference]: With dead ends: 651 [2020-01-16 18:03:05,111 INFO L226 Difference]: Without dead ends: 621 [2020-01-16 18:03:05,111 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:05,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-01-16 18:03:05,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 349. [2020-01-16 18:03:05,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-01-16 18:03:05,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1107 transitions. [2020-01-16 18:03:05,118 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1107 transitions. Word has length 19 [2020-01-16 18:03:05,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:05,118 INFO L478 AbstractCegarLoop]: Abstraction has 349 states and 1107 transitions. [2020-01-16 18:03:05,118 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:05,118 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1107 transitions. [2020-01-16 18:03:05,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:05,119 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:05,119 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:05,119 INFO L426 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:05,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:05,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1288605212, now seen corresponding path program 116 times [2020-01-16 18:03:05,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:05,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863876424] [2020-01-16 18:03:05,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:05,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:05,335 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863876424] [2020-01-16 18:03:05,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:05,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:05,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327553576] [2020-01-16 18:03:05,336 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:05,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:05,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:05,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:05,336 INFO L87 Difference]: Start difference. First operand 349 states and 1107 transitions. Second operand 8 states. [2020-01-16 18:03:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:05,412 INFO L93 Difference]: Finished difference Result 654 states and 1845 transitions. [2020-01-16 18:03:05,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:05,413 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:05,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:05,415 INFO L225 Difference]: With dead ends: 654 [2020-01-16 18:03:05,415 INFO L226 Difference]: Without dead ends: 617 [2020-01-16 18:03:05,415 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:05,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-01-16 18:03:05,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 345. [2020-01-16 18:03:05,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-01-16 18:03:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1095 transitions. [2020-01-16 18:03:05,421 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1095 transitions. Word has length 19 [2020-01-16 18:03:05,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:05,422 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 1095 transitions. [2020-01-16 18:03:05,422 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:05,422 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1095 transitions. [2020-01-16 18:03:05,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:05,422 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:05,422 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:05,422 INFO L426 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:05,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:05,423 INFO L82 PathProgramCache]: Analyzing trace with hash 2040451274, now seen corresponding path program 117 times [2020-01-16 18:03:05,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:05,423 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810765234] [2020-01-16 18:03:05,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:05,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810765234] [2020-01-16 18:03:05,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:05,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:05,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135663179] [2020-01-16 18:03:05,630 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:05,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:05,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:05,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:05,630 INFO L87 Difference]: Start difference. First operand 345 states and 1095 transitions. Second operand 8 states. [2020-01-16 18:03:05,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:05,710 INFO L93 Difference]: Finished difference Result 655 states and 1847 transitions. [2020-01-16 18:03:05,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:05,710 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:05,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:05,712 INFO L225 Difference]: With dead ends: 655 [2020-01-16 18:03:05,712 INFO L226 Difference]: Without dead ends: 625 [2020-01-16 18:03:05,712 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:05,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2020-01-16 18:03:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 350. [2020-01-16 18:03:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-01-16 18:03:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1105 transitions. [2020-01-16 18:03:05,721 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1105 transitions. Word has length 19 [2020-01-16 18:03:05,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:05,721 INFO L478 AbstractCegarLoop]: Abstraction has 350 states and 1105 transitions. [2020-01-16 18:03:05,721 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:05,721 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1105 transitions. [2020-01-16 18:03:05,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:05,721 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:05,722 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:05,722 INFO L426 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:05,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:05,722 INFO L82 PathProgramCache]: Analyzing trace with hash 311403940, now seen corresponding path program 118 times [2020-01-16 18:03:05,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:05,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604551757] [2020-01-16 18:03:05,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:05,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604551757] [2020-01-16 18:03:05,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:05,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:05,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434824269] [2020-01-16 18:03:05,917 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:05,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:05,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:05,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:05,918 INFO L87 Difference]: Start difference. First operand 350 states and 1105 transitions. Second operand 8 states. [2020-01-16 18:03:05,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:05,996 INFO L93 Difference]: Finished difference Result 661 states and 1861 transitions. [2020-01-16 18:03:05,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:05,996 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:05,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:05,998 INFO L225 Difference]: With dead ends: 661 [2020-01-16 18:03:05,998 INFO L226 Difference]: Without dead ends: 620 [2020-01-16 18:03:05,998 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:06,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-01-16 18:03:06,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 345. [2020-01-16 18:03:06,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-01-16 18:03:06,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1091 transitions. [2020-01-16 18:03:06,006 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1091 transitions. Word has length 19 [2020-01-16 18:03:06,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:06,006 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 1091 transitions. [2020-01-16 18:03:06,006 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:06,006 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1091 transitions. [2020-01-16 18:03:06,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:06,007 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:06,007 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:06,007 INFO L426 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:06,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:06,007 INFO L82 PathProgramCache]: Analyzing trace with hash 945502282, now seen corresponding path program 119 times [2020-01-16 18:03:06,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:06,007 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913481662] [2020-01-16 18:03:06,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:06,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:06,206 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913481662] [2020-01-16 18:03:06,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:06,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:06,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662076227] [2020-01-16 18:03:06,206 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:06,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:06,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:06,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:06,207 INFO L87 Difference]: Start difference. First operand 345 states and 1091 transitions. Second operand 8 states. [2020-01-16 18:03:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:06,282 INFO L93 Difference]: Finished difference Result 664 states and 1876 transitions. [2020-01-16 18:03:06,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:06,283 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:06,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:06,284 INFO L225 Difference]: With dead ends: 664 [2020-01-16 18:03:06,284 INFO L226 Difference]: Without dead ends: 631 [2020-01-16 18:03:06,285 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:06,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-01-16 18:03:06,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 353. [2020-01-16 18:03:06,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-01-16 18:03:06,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 1111 transitions. [2020-01-16 18:03:06,292 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 1111 transitions. Word has length 19 [2020-01-16 18:03:06,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:06,292 INFO L478 AbstractCegarLoop]: Abstraction has 353 states and 1111 transitions. [2020-01-16 18:03:06,292 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:06,292 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 1111 transitions. [2020-01-16 18:03:06,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:06,293 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:06,293 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:06,293 INFO L426 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:06,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:06,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1800808936, now seen corresponding path program 120 times [2020-01-16 18:03:06,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:06,294 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811911024] [2020-01-16 18:03:06,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:06,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811911024] [2020-01-16 18:03:06,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:06,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:06,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668402707] [2020-01-16 18:03:06,504 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:06,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:06,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:06,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:06,505 INFO L87 Difference]: Start difference. First operand 353 states and 1111 transitions. Second operand 8 states. [2020-01-16 18:03:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:06,586 INFO L93 Difference]: Finished difference Result 667 states and 1877 transitions. [2020-01-16 18:03:06,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:06,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:06,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:06,588 INFO L225 Difference]: With dead ends: 667 [2020-01-16 18:03:06,588 INFO L226 Difference]: Without dead ends: 608 [2020-01-16 18:03:06,589 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:06,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-01-16 18:03:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 330. [2020-01-16 18:03:06,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-01-16 18:03:06,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1061 transitions. [2020-01-16 18:03:06,596 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1061 transitions. Word has length 19 [2020-01-16 18:03:06,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:06,596 INFO L478 AbstractCegarLoop]: Abstraction has 330 states and 1061 transitions. [2020-01-16 18:03:06,596 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:06,596 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1061 transitions. [2020-01-16 18:03:06,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:06,597 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:06,597 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:06,597 INFO L426 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:06,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:06,597 INFO L82 PathProgramCache]: Analyzing trace with hash 822861400, now seen corresponding path program 121 times [2020-01-16 18:03:06,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:06,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322848549] [2020-01-16 18:03:06,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:06,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322848549] [2020-01-16 18:03:06,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:06,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:06,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983617741] [2020-01-16 18:03:06,840 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:06,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:06,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:06,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:06,841 INFO L87 Difference]: Start difference. First operand 330 states and 1061 transitions. Second operand 8 states. [2020-01-16 18:03:06,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:06,914 INFO L93 Difference]: Finished difference Result 685 states and 1929 transitions. [2020-01-16 18:03:06,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:06,915 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:06,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:06,916 INFO L225 Difference]: With dead ends: 685 [2020-01-16 18:03:06,916 INFO L226 Difference]: Without dead ends: 654 [2020-01-16 18:03:06,917 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:06,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2020-01-16 18:03:06,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 346. [2020-01-16 18:03:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-01-16 18:03:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1101 transitions. [2020-01-16 18:03:06,926 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1101 transitions. Word has length 19 [2020-01-16 18:03:06,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:06,926 INFO L478 AbstractCegarLoop]: Abstraction has 346 states and 1101 transitions. [2020-01-16 18:03:06,926 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1101 transitions. [2020-01-16 18:03:06,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:06,927 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:06,927 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:06,927 INFO L426 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:06,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:06,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1197512586, now seen corresponding path program 122 times [2020-01-16 18:03:06,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:06,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752987801] [2020-01-16 18:03:06,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:07,163 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752987801] [2020-01-16 18:03:07,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:07,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:07,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380043950] [2020-01-16 18:03:07,164 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:07,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:07,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:07,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:07,164 INFO L87 Difference]: Start difference. First operand 346 states and 1101 transitions. Second operand 8 states. [2020-01-16 18:03:07,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:07,244 INFO L93 Difference]: Finished difference Result 694 states and 1952 transitions. [2020-01-16 18:03:07,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:07,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:07,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:07,246 INFO L225 Difference]: With dead ends: 694 [2020-01-16 18:03:07,246 INFO L226 Difference]: Without dead ends: 646 [2020-01-16 18:03:07,246 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2020-01-16 18:03:07,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 338. [2020-01-16 18:03:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-01-16 18:03:07,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1080 transitions. [2020-01-16 18:03:07,252 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1080 transitions. Word has length 19 [2020-01-16 18:03:07,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:07,252 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 1080 transitions. [2020-01-16 18:03:07,253 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:07,253 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1080 transitions. [2020-01-16 18:03:07,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:07,253 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:07,253 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:07,253 INFO L426 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:07,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:07,254 INFO L82 PathProgramCache]: Analyzing trace with hash 2004251154, now seen corresponding path program 123 times [2020-01-16 18:03:07,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:07,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401594626] [2020-01-16 18:03:07,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:07,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401594626] [2020-01-16 18:03:07,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:07,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:07,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333598638] [2020-01-16 18:03:07,466 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:07,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:07,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:07,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:07,467 INFO L87 Difference]: Start difference. First operand 338 states and 1080 transitions. Second operand 8 states. [2020-01-16 18:03:07,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:07,532 INFO L93 Difference]: Finished difference Result 679 states and 1906 transitions. [2020-01-16 18:03:07,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:07,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:07,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:07,534 INFO L225 Difference]: With dead ends: 679 [2020-01-16 18:03:07,534 INFO L226 Difference]: Without dead ends: 648 [2020-01-16 18:03:07,535 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:07,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-01-16 18:03:07,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 344. [2020-01-16 18:03:07,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-01-16 18:03:07,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1091 transitions. [2020-01-16 18:03:07,542 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 1091 transitions. Word has length 19 [2020-01-16 18:03:07,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:07,542 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 1091 transitions. [2020-01-16 18:03:07,542 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:07,542 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1091 transitions. [2020-01-16 18:03:07,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:07,543 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:07,543 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:07,543 INFO L426 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:07,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:07,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1028046404, now seen corresponding path program 124 times [2020-01-16 18:03:07,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:07,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383643896] [2020-01-16 18:03:07,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:07,761 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383643896] [2020-01-16 18:03:07,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:07,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:07,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349983998] [2020-01-16 18:03:07,762 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:07,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:07,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:07,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:07,762 INFO L87 Difference]: Start difference. First operand 344 states and 1091 transitions. Second operand 8 states. [2020-01-16 18:03:07,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:07,850 INFO L93 Difference]: Finished difference Result 684 states and 1918 transitions. [2020-01-16 18:03:07,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:07,850 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:07,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:07,852 INFO L225 Difference]: With dead ends: 684 [2020-01-16 18:03:07,852 INFO L226 Difference]: Without dead ends: 642 [2020-01-16 18:03:07,852 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:07,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-01-16 18:03:07,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 338. [2020-01-16 18:03:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-01-16 18:03:07,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1074 transitions. [2020-01-16 18:03:07,861 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1074 transitions. Word has length 19 [2020-01-16 18:03:07,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:07,861 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 1074 transitions. [2020-01-16 18:03:07,861 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1074 transitions. [2020-01-16 18:03:07,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:07,862 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:07,862 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:07,863 INFO L426 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:07,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:07,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1100948602, now seen corresponding path program 125 times [2020-01-16 18:03:07,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:07,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245488305] [2020-01-16 18:03:07,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:08,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245488305] [2020-01-16 18:03:08,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:08,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:08,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436462540] [2020-01-16 18:03:08,088 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:08,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:08,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:08,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:08,089 INFO L87 Difference]: Start difference. First operand 338 states and 1074 transitions. Second operand 8 states. [2020-01-16 18:03:08,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:08,168 INFO L93 Difference]: Finished difference Result 703 states and 1986 transitions. [2020-01-16 18:03:08,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:08,168 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:08,170 INFO L225 Difference]: With dead ends: 703 [2020-01-16 18:03:08,170 INFO L226 Difference]: Without dead ends: 663 [2020-01-16 18:03:08,171 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:08,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-01-16 18:03:08,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 350. [2020-01-16 18:03:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-01-16 18:03:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1105 transitions. [2020-01-16 18:03:08,179 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1105 transitions. Word has length 19 [2020-01-16 18:03:08,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:08,180 INFO L478 AbstractCegarLoop]: Abstraction has 350 states and 1105 transitions. [2020-01-16 18:03:08,180 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:08,180 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1105 transitions. [2020-01-16 18:03:08,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:08,181 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:08,181 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:08,181 INFO L426 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:08,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:08,181 INFO L82 PathProgramCache]: Analyzing trace with hash -242668718, now seen corresponding path program 126 times [2020-01-16 18:03:08,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:08,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811605176] [2020-01-16 18:03:08,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:08,402 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811605176] [2020-01-16 18:03:08,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:08,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:08,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315576333] [2020-01-16 18:03:08,403 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:08,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:08,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:08,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:08,403 INFO L87 Difference]: Start difference. First operand 350 states and 1105 transitions. Second operand 8 states. [2020-01-16 18:03:08,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:08,494 INFO L93 Difference]: Finished difference Result 699 states and 1962 transitions. [2020-01-16 18:03:08,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:08,494 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:08,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:08,496 INFO L225 Difference]: With dead ends: 699 [2020-01-16 18:03:08,496 INFO L226 Difference]: Without dead ends: 643 [2020-01-16 18:03:08,497 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-01-16 18:03:08,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 330. [2020-01-16 18:03:08,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-01-16 18:03:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1054 transitions. [2020-01-16 18:03:08,510 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1054 transitions. Word has length 19 [2020-01-16 18:03:08,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:08,511 INFO L478 AbstractCegarLoop]: Abstraction has 330 states and 1054 transitions. [2020-01-16 18:03:08,511 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:08,511 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1054 transitions. [2020-01-16 18:03:08,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:08,511 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:08,512 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:08,512 INFO L426 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:08,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:08,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1565948490, now seen corresponding path program 127 times [2020-01-16 18:03:08,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:08,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210379456] [2020-01-16 18:03:08,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:08,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:08,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210379456] [2020-01-16 18:03:08,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:08,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:08,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093361871] [2020-01-16 18:03:08,741 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:08,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:08,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:08,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:08,741 INFO L87 Difference]: Start difference. First operand 330 states and 1054 transitions. Second operand 8 states. [2020-01-16 18:03:08,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:08,828 INFO L93 Difference]: Finished difference Result 676 states and 1893 transitions. [2020-01-16 18:03:08,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:08,828 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:08,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:08,830 INFO L225 Difference]: With dead ends: 676 [2020-01-16 18:03:08,830 INFO L226 Difference]: Without dead ends: 645 [2020-01-16 18:03:08,830 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:08,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-01-16 18:03:08,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 344. [2020-01-16 18:03:08,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-01-16 18:03:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1089 transitions. [2020-01-16 18:03:08,837 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 1089 transitions. Word has length 19 [2020-01-16 18:03:08,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:08,837 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 1089 transitions. [2020-01-16 18:03:08,837 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:08,837 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1089 transitions. [2020-01-16 18:03:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:08,838 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:08,838 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:08,838 INFO L426 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:08,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:08,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1940599676, now seen corresponding path program 128 times [2020-01-16 18:03:08,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:08,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841012735] [2020-01-16 18:03:08,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:09,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841012735] [2020-01-16 18:03:09,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:09,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:09,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677840101] [2020-01-16 18:03:09,063 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:09,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:09,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:09,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:09,064 INFO L87 Difference]: Start difference. First operand 344 states and 1089 transitions. Second operand 8 states. [2020-01-16 18:03:09,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:09,141 INFO L93 Difference]: Finished difference Result 685 states and 1916 transitions. [2020-01-16 18:03:09,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:09,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:09,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:09,143 INFO L225 Difference]: With dead ends: 685 [2020-01-16 18:03:09,143 INFO L226 Difference]: Without dead ends: 637 [2020-01-16 18:03:09,143 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:09,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2020-01-16 18:03:09,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 336. [2020-01-16 18:03:09,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-01-16 18:03:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1069 transitions. [2020-01-16 18:03:09,152 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1069 transitions. Word has length 19 [2020-01-16 18:03:09,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:09,152 INFO L478 AbstractCegarLoop]: Abstraction has 336 states and 1069 transitions. [2020-01-16 18:03:09,152 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1069 transitions. [2020-01-16 18:03:09,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:09,152 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:09,153 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:09,153 INFO L426 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:09,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:09,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1873225276, now seen corresponding path program 129 times [2020-01-16 18:03:09,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:09,153 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664845866] [2020-01-16 18:03:09,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:09,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664845866] [2020-01-16 18:03:09,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:09,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:09,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443962274] [2020-01-16 18:03:09,376 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:09,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:09,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:09,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:09,376 INFO L87 Difference]: Start difference. First operand 336 states and 1069 transitions. Second operand 8 states. [2020-01-16 18:03:09,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:09,435 INFO L93 Difference]: Finished difference Result 666 states and 1859 transitions. [2020-01-16 18:03:09,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:09,435 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:09,437 INFO L225 Difference]: With dead ends: 666 [2020-01-16 18:03:09,437 INFO L226 Difference]: Without dead ends: 635 [2020-01-16 18:03:09,437 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:09,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-01-16 18:03:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 341. [2020-01-16 18:03:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-01-16 18:03:09,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1078 transitions. [2020-01-16 18:03:09,444 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1078 transitions. Word has length 19 [2020-01-16 18:03:09,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:09,444 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 1078 transitions. [2020-01-16 18:03:09,444 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:09,444 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1078 transitions. [2020-01-16 18:03:09,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:09,444 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:09,444 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:09,445 INFO L426 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:09,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:09,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1670679926, now seen corresponding path program 130 times [2020-01-16 18:03:09,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:09,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297386099] [2020-01-16 18:03:09,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:09,654 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297386099] [2020-01-16 18:03:09,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:09,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:09,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117316693] [2020-01-16 18:03:09,654 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:09,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:09,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:09,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:09,655 INFO L87 Difference]: Start difference. First operand 341 states and 1078 transitions. Second operand 8 states. [2020-01-16 18:03:09,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:09,735 INFO L93 Difference]: Finished difference Result 668 states and 1863 transitions. [2020-01-16 18:03:09,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:09,736 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:09,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:09,737 INFO L225 Difference]: With dead ends: 668 [2020-01-16 18:03:09,738 INFO L226 Difference]: Without dead ends: 630 [2020-01-16 18:03:09,738 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:09,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-01-16 18:03:09,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 336. [2020-01-16 18:03:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-01-16 18:03:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1064 transitions. [2020-01-16 18:03:09,745 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1064 transitions. Word has length 19 [2020-01-16 18:03:09,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:09,745 INFO L478 AbstractCegarLoop]: Abstraction has 336 states and 1064 transitions. [2020-01-16 18:03:09,745 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:09,745 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1064 transitions. [2020-01-16 18:03:09,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:09,746 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:09,746 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:09,746 INFO L426 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:09,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:09,746 INFO L82 PathProgramCache]: Analyzing trace with hash 400559450, now seen corresponding path program 131 times [2020-01-16 18:03:09,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:09,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771970158] [2020-01-16 18:03:09,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:09,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771970158] [2020-01-16 18:03:09,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:09,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:09,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177265828] [2020-01-16 18:03:09,959 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:09,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:09,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:09,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:09,960 INFO L87 Difference]: Start difference. First operand 336 states and 1064 transitions. Second operand 8 states. [2020-01-16 18:03:10,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:10,044 INFO L93 Difference]: Finished difference Result 688 states and 1931 transitions. [2020-01-16 18:03:10,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:10,045 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:10,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:10,046 INFO L225 Difference]: With dead ends: 688 [2020-01-16 18:03:10,046 INFO L226 Difference]: Without dead ends: 648 [2020-01-16 18:03:10,046 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:10,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-01-16 18:03:10,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 345. [2020-01-16 18:03:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-01-16 18:03:10,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1086 transitions. [2020-01-16 18:03:10,053 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 1086 transitions. Word has length 19 [2020-01-16 18:03:10,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:10,053 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 1086 transitions. [2020-01-16 18:03:10,053 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:10,053 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 1086 transitions. [2020-01-16 18:03:10,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:10,054 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:10,054 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:10,054 INFO L426 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:10,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:10,055 INFO L82 PathProgramCache]: Analyzing trace with hash 399964804, now seen corresponding path program 132 times [2020-01-16 18:03:10,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:10,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677240315] [2020-01-16 18:03:10,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:10,262 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677240315] [2020-01-16 18:03:10,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:10,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:10,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069100961] [2020-01-16 18:03:10,262 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:10,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:10,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:10,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:10,263 INFO L87 Difference]: Start difference. First operand 345 states and 1086 transitions. Second operand 8 states. [2020-01-16 18:03:10,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:10,345 INFO L93 Difference]: Finished difference Result 681 states and 1901 transitions. [2020-01-16 18:03:10,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:10,346 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:10,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:10,347 INFO L225 Difference]: With dead ends: 681 [2020-01-16 18:03:10,347 INFO L226 Difference]: Without dead ends: 633 [2020-01-16 18:03:10,348 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:10,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-01-16 18:03:10,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 330. [2020-01-16 18:03:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-01-16 18:03:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1048 transitions. [2020-01-16 18:03:10,354 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1048 transitions. Word has length 19 [2020-01-16 18:03:10,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:10,354 INFO L478 AbstractCegarLoop]: Abstraction has 330 states and 1048 transitions. [2020-01-16 18:03:10,355 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1048 transitions. [2020-01-16 18:03:10,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:10,355 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:10,355 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:10,355 INFO L426 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:10,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:10,356 INFO L82 PathProgramCache]: Analyzing trace with hash 390118730, now seen corresponding path program 133 times [2020-01-16 18:03:10,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:10,356 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327983763] [2020-01-16 18:03:10,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:10,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327983763] [2020-01-16 18:03:10,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:10,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:10,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106770897] [2020-01-16 18:03:10,588 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:10,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:10,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:10,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:10,588 INFO L87 Difference]: Start difference. First operand 330 states and 1048 transitions. Second operand 8 states. [2020-01-16 18:03:10,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:10,667 INFO L93 Difference]: Finished difference Result 658 states and 1838 transitions. [2020-01-16 18:03:10,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:10,667 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:10,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:10,669 INFO L225 Difference]: With dead ends: 658 [2020-01-16 18:03:10,669 INFO L226 Difference]: Without dead ends: 627 [2020-01-16 18:03:10,669 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:10,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-01-16 18:03:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 340. [2020-01-16 18:03:10,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-01-16 18:03:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1076 transitions. [2020-01-16 18:03:10,676 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1076 transitions. Word has length 19 [2020-01-16 18:03:10,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:10,676 INFO L478 AbstractCegarLoop]: Abstraction has 340 states and 1076 transitions. [2020-01-16 18:03:10,676 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1076 transitions. [2020-01-16 18:03:10,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:10,677 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:10,677 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:10,677 INFO L426 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:10,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:10,677 INFO L82 PathProgramCache]: Analyzing trace with hash -360943364, now seen corresponding path program 134 times [2020-01-16 18:03:10,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:10,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262729110] [2020-01-16 18:03:10,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:10,890 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262729110] [2020-01-16 18:03:10,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:10,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:10,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194765880] [2020-01-16 18:03:10,890 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:10,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:10,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:10,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:10,891 INFO L87 Difference]: Start difference. First operand 340 states and 1076 transitions. Second operand 8 states. [2020-01-16 18:03:10,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:10,974 INFO L93 Difference]: Finished difference Result 660 states and 1842 transitions. [2020-01-16 18:03:10,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:10,975 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:10,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:10,976 INFO L225 Difference]: With dead ends: 660 [2020-01-16 18:03:10,977 INFO L226 Difference]: Without dead ends: 622 [2020-01-16 18:03:10,977 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:10,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2020-01-16 18:03:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 335. [2020-01-16 18:03:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-01-16 18:03:10,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 1062 transitions. [2020-01-16 18:03:10,984 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 1062 transitions. Word has length 19 [2020-01-16 18:03:10,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:10,984 INFO L478 AbstractCegarLoop]: Abstraction has 335 states and 1062 transitions. [2020-01-16 18:03:10,984 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:10,984 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 1062 transitions. [2020-01-16 18:03:10,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:10,985 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:10,985 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:10,985 INFO L426 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:10,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:10,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1210319124, now seen corresponding path program 135 times [2020-01-16 18:03:10,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:10,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803208270] [2020-01-16 18:03:10,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:11,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803208270] [2020-01-16 18:03:11,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:11,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:11,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729920009] [2020-01-16 18:03:11,196 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:11,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:11,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:11,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:11,196 INFO L87 Difference]: Start difference. First operand 335 states and 1062 transitions. Second operand 8 states. [2020-01-16 18:03:11,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:11,264 INFO L93 Difference]: Finished difference Result 662 states and 1845 transitions. [2020-01-16 18:03:11,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:11,264 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:11,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:11,266 INFO L225 Difference]: With dead ends: 662 [2020-01-16 18:03:11,266 INFO L226 Difference]: Without dead ends: 631 [2020-01-16 18:03:11,266 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-01-16 18:03:11,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 341. [2020-01-16 18:03:11,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-01-16 18:03:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1073 transitions. [2020-01-16 18:03:11,273 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1073 transitions. Word has length 19 [2020-01-16 18:03:11,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:11,273 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 1073 transitions. [2020-01-16 18:03:11,273 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:11,273 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1073 transitions. [2020-01-16 18:03:11,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:11,273 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:11,274 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:11,274 INFO L426 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:11,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:11,274 INFO L82 PathProgramCache]: Analyzing trace with hash 2108443422, now seen corresponding path program 136 times [2020-01-16 18:03:11,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:11,274 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544380505] [2020-01-16 18:03:11,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:11,477 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544380505] [2020-01-16 18:03:11,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:11,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:11,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944970062] [2020-01-16 18:03:11,477 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:11,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:11,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:11,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:11,478 INFO L87 Difference]: Start difference. First operand 341 states and 1073 transitions. Second operand 8 states. [2020-01-16 18:03:11,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:11,575 INFO L93 Difference]: Finished difference Result 667 states and 1857 transitions. [2020-01-16 18:03:11,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:11,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:11,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:11,577 INFO L225 Difference]: With dead ends: 667 [2020-01-16 18:03:11,577 INFO L226 Difference]: Without dead ends: 625 [2020-01-16 18:03:11,578 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:11,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2020-01-16 18:03:11,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 335. [2020-01-16 18:03:11,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-01-16 18:03:11,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 1057 transitions. [2020-01-16 18:03:11,586 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 1057 transitions. Word has length 19 [2020-01-16 18:03:11,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:11,586 INFO L478 AbstractCegarLoop]: Abstraction has 335 states and 1057 transitions. [2020-01-16 18:03:11,586 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:11,586 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 1057 transitions. [2020-01-16 18:03:11,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:11,587 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:11,587 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:11,587 INFO L426 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:11,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:11,588 INFO L82 PathProgramCache]: Analyzing trace with hash -558519542, now seen corresponding path program 137 times [2020-01-16 18:03:11,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:11,588 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175099922] [2020-01-16 18:03:11,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:11,810 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175099922] [2020-01-16 18:03:11,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:11,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:11,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137994124] [2020-01-16 18:03:11,810 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:11,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:11,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:11,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:11,811 INFO L87 Difference]: Start difference. First operand 335 states and 1057 transitions. Second operand 8 states. [2020-01-16 18:03:11,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:11,908 INFO L93 Difference]: Finished difference Result 668 states and 1869 transitions. [2020-01-16 18:03:11,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:11,909 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:11,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:11,910 INFO L225 Difference]: With dead ends: 668 [2020-01-16 18:03:11,911 INFO L226 Difference]: Without dead ends: 635 [2020-01-16 18:03:11,911 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:11,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-01-16 18:03:11,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 343. [2020-01-16 18:03:11,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-01-16 18:03:11,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1077 transitions. [2020-01-16 18:03:11,918 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1077 transitions. Word has length 19 [2020-01-16 18:03:11,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:11,918 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 1077 transitions. [2020-01-16 18:03:11,918 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:11,918 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1077 transitions. [2020-01-16 18:03:11,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:11,919 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:11,919 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:11,919 INFO L426 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:11,919 INFO L82 PathProgramCache]: Analyzing trace with hash 300354988, now seen corresponding path program 138 times [2020-01-16 18:03:11,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:11,919 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377819071] [2020-01-16 18:03:11,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:12,143 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377819071] [2020-01-16 18:03:12,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:12,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:12,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36700385] [2020-01-16 18:03:12,143 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:12,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:12,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:12,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:12,144 INFO L87 Difference]: Start difference. First operand 343 states and 1077 transitions. Second operand 8 states. [2020-01-16 18:03:12,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:12,234 INFO L93 Difference]: Finished difference Result 671 states and 1870 transitions. [2020-01-16 18:03:12,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:12,234 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:12,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:12,236 INFO L225 Difference]: With dead ends: 671 [2020-01-16 18:03:12,236 INFO L226 Difference]: Without dead ends: 622 [2020-01-16 18:03:12,236 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:12,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2020-01-16 18:03:12,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 330. [2020-01-16 18:03:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-01-16 18:03:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1043 transitions. [2020-01-16 18:03:12,247 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1043 transitions. Word has length 19 [2020-01-16 18:03:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:12,247 INFO L478 AbstractCegarLoop]: Abstraction has 330 states and 1043 transitions. [2020-01-16 18:03:12,247 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1043 transitions. [2020-01-16 18:03:12,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:12,248 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:12,248 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:12,248 INFO L426 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:12,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:12,249 INFO L82 PathProgramCache]: Analyzing trace with hash -2132260642, now seen corresponding path program 139 times [2020-01-16 18:03:12,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:12,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533387550] [2020-01-16 18:03:12,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:12,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533387550] [2020-01-16 18:03:12,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:12,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:12,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571508367] [2020-01-16 18:03:12,461 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:12,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:12,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:12,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:12,461 INFO L87 Difference]: Start difference. First operand 330 states and 1043 transitions. Second operand 8 states. [2020-01-16 18:03:12,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:12,549 INFO L93 Difference]: Finished difference Result 702 states and 2000 transitions. [2020-01-16 18:03:12,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:12,550 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:12,551 INFO L225 Difference]: With dead ends: 702 [2020-01-16 18:03:12,552 INFO L226 Difference]: Without dead ends: 662 [2020-01-16 18:03:12,552 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:12,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-01-16 18:03:12,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 347. [2020-01-16 18:03:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-01-16 18:03:12,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1101 transitions. [2020-01-16 18:03:12,559 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1101 transitions. Word has length 19 [2020-01-16 18:03:12,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:12,559 INFO L478 AbstractCegarLoop]: Abstraction has 347 states and 1101 transitions. [2020-01-16 18:03:12,559 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:12,559 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1101 transitions. [2020-01-16 18:03:12,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:12,560 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:12,560 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:12,560 INFO L426 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:12,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:12,560 INFO L82 PathProgramCache]: Analyzing trace with hash -2132855288, now seen corresponding path program 140 times [2020-01-16 18:03:12,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:12,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982112533] [2020-01-16 18:03:12,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:12,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982112533] [2020-01-16 18:03:12,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:12,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:12,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771162283] [2020-01-16 18:03:12,763 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:12,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:12,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:12,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:12,763 INFO L87 Difference]: Start difference. First operand 347 states and 1101 transitions. Second operand 8 states. [2020-01-16 18:03:12,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:12,865 INFO L93 Difference]: Finished difference Result 695 states and 1970 transitions. [2020-01-16 18:03:12,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:12,866 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:12,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:12,868 INFO L225 Difference]: With dead ends: 695 [2020-01-16 18:03:12,868 INFO L226 Difference]: Without dead ends: 653 [2020-01-16 18:03:12,868 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:12,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-01-16 18:03:12,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 338. [2020-01-16 18:03:12,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-01-16 18:03:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1071 transitions. [2020-01-16 18:03:12,878 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1071 transitions. Word has length 19 [2020-01-16 18:03:12,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:12,878 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 1071 transitions. [2020-01-16 18:03:12,878 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:12,878 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1071 transitions. [2020-01-16 18:03:12,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:12,879 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:12,879 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:12,879 INFO L426 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:12,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:12,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1276953988, now seen corresponding path program 141 times [2020-01-16 18:03:12,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:12,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548082842] [2020-01-16 18:03:12,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:13,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:13,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548082842] [2020-01-16 18:03:13,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:13,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:13,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628563011] [2020-01-16 18:03:13,099 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:13,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:13,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:13,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:13,100 INFO L87 Difference]: Start difference. First operand 338 states and 1071 transitions. Second operand 8 states. [2020-01-16 18:03:13,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:13,191 INFO L93 Difference]: Finished difference Result 708 states and 2013 transitions. [2020-01-16 18:03:13,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:13,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:13,193 INFO L225 Difference]: With dead ends: 708 [2020-01-16 18:03:13,193 INFO L226 Difference]: Without dead ends: 668 [2020-01-16 18:03:13,193 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:13,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2020-01-16 18:03:13,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 350. [2020-01-16 18:03:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-01-16 18:03:13,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1102 transitions. [2020-01-16 18:03:13,200 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1102 transitions. Word has length 19 [2020-01-16 18:03:13,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:13,200 INFO L478 AbstractCegarLoop]: Abstraction has 350 states and 1102 transitions. [2020-01-16 18:03:13,200 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:13,201 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1102 transitions. [2020-01-16 18:03:13,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:13,201 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:13,201 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:13,201 INFO L426 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:13,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:13,202 INFO L82 PathProgramCache]: Analyzing trace with hash -418674104, now seen corresponding path program 142 times [2020-01-16 18:03:13,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:13,202 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552876985] [2020-01-16 18:03:13,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:13,400 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552876985] [2020-01-16 18:03:13,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:13,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:13,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843536215] [2020-01-16 18:03:13,401 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:13,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:13,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:13,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:13,401 INFO L87 Difference]: Start difference. First operand 350 states and 1102 transitions. Second operand 8 states. [2020-01-16 18:03:13,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:13,495 INFO L93 Difference]: Finished difference Result 704 states and 1989 transitions. [2020-01-16 18:03:13,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:13,496 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:13,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:13,497 INFO L225 Difference]: With dead ends: 704 [2020-01-16 18:03:13,498 INFO L226 Difference]: Without dead ends: 656 [2020-01-16 18:03:13,498 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:13,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-01-16 18:03:13,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 338. [2020-01-16 18:03:13,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-01-16 18:03:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1063 transitions. [2020-01-16 18:03:13,507 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1063 transitions. Word has length 19 [2020-01-16 18:03:13,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:13,507 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 1063 transitions. [2020-01-16 18:03:13,507 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:13,507 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1063 transitions. [2020-01-16 18:03:13,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:13,508 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:13,508 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:13,508 INFO L426 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:13,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:13,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1295982660, now seen corresponding path program 143 times [2020-01-16 18:03:13,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:13,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371271559] [2020-01-16 18:03:13,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:13,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371271559] [2020-01-16 18:03:13,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:13,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:13,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162237651] [2020-01-16 18:03:13,712 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:13,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:13,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:13,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:13,713 INFO L87 Difference]: Start difference. First operand 338 states and 1063 transitions. Second operand 8 states. [2020-01-16 18:03:13,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:13,798 INFO L93 Difference]: Finished difference Result 690 states and 1948 transitions. [2020-01-16 18:03:13,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:13,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:13,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:13,800 INFO L225 Difference]: With dead ends: 690 [2020-01-16 18:03:13,800 INFO L226 Difference]: Without dead ends: 657 [2020-01-16 18:03:13,800 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:13,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-01-16 18:03:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 346. [2020-01-16 18:03:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-01-16 18:03:13,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1083 transitions. [2020-01-16 18:03:13,808 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1083 transitions. Word has length 19 [2020-01-16 18:03:13,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:13,808 INFO L478 AbstractCegarLoop]: Abstraction has 346 states and 1083 transitions. [2020-01-16 18:03:13,808 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:13,808 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1083 transitions. [2020-01-16 18:03:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:13,809 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:13,809 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:13,809 INFO L426 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:13,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:13,809 INFO L82 PathProgramCache]: Analyzing trace with hash -437108130, now seen corresponding path program 144 times [2020-01-16 18:03:13,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:13,809 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156366487] [2020-01-16 18:03:13,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:14,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156366487] [2020-01-16 18:03:14,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:14,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:14,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450720922] [2020-01-16 18:03:14,019 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:14,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:14,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:14,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:14,020 INFO L87 Difference]: Start difference. First operand 346 states and 1083 transitions. Second operand 8 states. [2020-01-16 18:03:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:14,112 INFO L93 Difference]: Finished difference Result 693 states and 1949 transitions. [2020-01-16 18:03:14,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:14,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:14,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:14,114 INFO L225 Difference]: With dead ends: 693 [2020-01-16 18:03:14,114 INFO L226 Difference]: Without dead ends: 633 [2020-01-16 18:03:14,114 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:14,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-01-16 18:03:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 322. [2020-01-16 18:03:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-01-16 18:03:14,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1025 transitions. [2020-01-16 18:03:14,121 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1025 transitions. Word has length 19 [2020-01-16 18:03:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:14,121 INFO L478 AbstractCegarLoop]: Abstraction has 322 states and 1025 transitions. [2020-01-16 18:03:14,122 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:14,122 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1025 transitions. [2020-01-16 18:03:14,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:14,122 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:14,122 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:14,122 INFO L426 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:14,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:14,123 INFO L82 PathProgramCache]: Analyzing trace with hash -570692880, now seen corresponding path program 145 times [2020-01-16 18:03:14,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:14,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039216999] [2020-01-16 18:03:14,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:14,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:14,380 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039216999] [2020-01-16 18:03:14,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:14,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:14,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559457800] [2020-01-16 18:03:14,381 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:14,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:14,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:14,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:14,381 INFO L87 Difference]: Start difference. First operand 322 states and 1025 transitions. Second operand 8 states. [2020-01-16 18:03:14,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:14,460 INFO L93 Difference]: Finished difference Result 656 states and 1808 transitions. [2020-01-16 18:03:14,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:14,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:14,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:14,462 INFO L225 Difference]: With dead ends: 656 [2020-01-16 18:03:14,462 INFO L226 Difference]: Without dead ends: 625 [2020-01-16 18:03:14,462 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:14,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2020-01-16 18:03:14,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 343. [2020-01-16 18:03:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-01-16 18:03:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1083 transitions. [2020-01-16 18:03:14,469 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1083 transitions. Word has length 19 [2020-01-16 18:03:14,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:14,470 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 1083 transitions. [2020-01-16 18:03:14,470 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:14,470 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1083 transitions. [2020-01-16 18:03:14,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:14,470 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:14,470 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:14,471 INFO L426 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:14,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:14,471 INFO L82 PathProgramCache]: Analyzing trace with hash -196041694, now seen corresponding path program 146 times [2020-01-16 18:03:14,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:14,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965177560] [2020-01-16 18:03:14,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:14,699 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965177560] [2020-01-16 18:03:14,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:14,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:14,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262539319] [2020-01-16 18:03:14,700 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:14,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:14,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:14,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:14,700 INFO L87 Difference]: Start difference. First operand 343 states and 1083 transitions. Second operand 8 states. [2020-01-16 18:03:14,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:14,783 INFO L93 Difference]: Finished difference Result 665 states and 1831 transitions. [2020-01-16 18:03:14,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:14,783 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:14,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:14,784 INFO L225 Difference]: With dead ends: 665 [2020-01-16 18:03:14,785 INFO L226 Difference]: Without dead ends: 617 [2020-01-16 18:03:14,785 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:14,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-01-16 18:03:14,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 335. [2020-01-16 18:03:14,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-01-16 18:03:14,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 1062 transitions. [2020-01-16 18:03:14,792 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 1062 transitions. Word has length 19 [2020-01-16 18:03:14,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:14,792 INFO L478 AbstractCegarLoop]: Abstraction has 335 states and 1062 transitions. [2020-01-16 18:03:14,792 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:14,792 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 1062 transitions. [2020-01-16 18:03:14,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:14,793 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:14,793 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:14,793 INFO L426 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:14,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:14,793 INFO L82 PathProgramCache]: Analyzing trace with hash 610696874, now seen corresponding path program 147 times [2020-01-16 18:03:14,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:14,793 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771927071] [2020-01-16 18:03:14,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:15,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771927071] [2020-01-16 18:03:15,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:15,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:15,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279081606] [2020-01-16 18:03:15,008 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:15,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:15,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:15,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:15,009 INFO L87 Difference]: Start difference. First operand 335 states and 1062 transitions. Second operand 8 states. [2020-01-16 18:03:15,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:15,094 INFO L93 Difference]: Finished difference Result 650 states and 1785 transitions. [2020-01-16 18:03:15,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:15,094 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:15,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:15,096 INFO L225 Difference]: With dead ends: 650 [2020-01-16 18:03:15,096 INFO L226 Difference]: Without dead ends: 619 [2020-01-16 18:03:15,096 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:15,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-01-16 18:03:15,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 341. [2020-01-16 18:03:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-01-16 18:03:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 1073 transitions. [2020-01-16 18:03:15,103 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 1073 transitions. Word has length 19 [2020-01-16 18:03:15,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:15,103 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 1073 transitions. [2020-01-16 18:03:15,103 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:15,103 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 1073 transitions. [2020-01-16 18:03:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:15,103 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:15,103 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:15,103 INFO L426 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:15,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:15,104 INFO L82 PathProgramCache]: Analyzing trace with hash -365507876, now seen corresponding path program 148 times [2020-01-16 18:03:15,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:15,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772278134] [2020-01-16 18:03:15,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:15,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772278134] [2020-01-16 18:03:15,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:15,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:15,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148390019] [2020-01-16 18:03:15,314 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:15,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:15,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:15,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:15,315 INFO L87 Difference]: Start difference. First operand 341 states and 1073 transitions. Second operand 8 states. [2020-01-16 18:03:15,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:15,411 INFO L93 Difference]: Finished difference Result 655 states and 1797 transitions. [2020-01-16 18:03:15,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:15,412 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:15,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:15,413 INFO L225 Difference]: With dead ends: 655 [2020-01-16 18:03:15,413 INFO L226 Difference]: Without dead ends: 613 [2020-01-16 18:03:15,414 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:15,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2020-01-16 18:03:15,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 335. [2020-01-16 18:03:15,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-01-16 18:03:15,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 1056 transitions. [2020-01-16 18:03:15,422 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 1056 transitions. Word has length 19 [2020-01-16 18:03:15,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:15,423 INFO L478 AbstractCegarLoop]: Abstraction has 335 states and 1056 transitions. [2020-01-16 18:03:15,423 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:15,423 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 1056 transitions. [2020-01-16 18:03:15,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:15,423 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:15,424 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:15,424 INFO L426 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:15,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:15,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1800464414, now seen corresponding path program 149 times [2020-01-16 18:03:15,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:15,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528030092] [2020-01-16 18:03:15,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:15,693 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528030092] [2020-01-16 18:03:15,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:15,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:15,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010787803] [2020-01-16 18:03:15,694 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:15,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:15,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:15,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:15,694 INFO L87 Difference]: Start difference. First operand 335 states and 1056 transitions. Second operand 8 states. [2020-01-16 18:03:15,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:15,803 INFO L93 Difference]: Finished difference Result 674 states and 1865 transitions. [2020-01-16 18:03:15,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:15,803 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:15,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:15,804 INFO L225 Difference]: With dead ends: 674 [2020-01-16 18:03:15,805 INFO L226 Difference]: Without dead ends: 634 [2020-01-16 18:03:15,805 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:15,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-01-16 18:03:15,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 347. [2020-01-16 18:03:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-01-16 18:03:15,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1087 transitions. [2020-01-16 18:03:15,813 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1087 transitions. Word has length 19 [2020-01-16 18:03:15,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:15,814 INFO L478 AbstractCegarLoop]: Abstraction has 347 states and 1087 transitions. [2020-01-16 18:03:15,814 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:15,814 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1087 transitions. [2020-01-16 18:03:15,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:15,814 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:15,815 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:15,815 INFO L426 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:15,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:15,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1636222998, now seen corresponding path program 150 times [2020-01-16 18:03:15,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:15,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739276506] [2020-01-16 18:03:15,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:16,021 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739276506] [2020-01-16 18:03:16,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:16,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:16,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567326130] [2020-01-16 18:03:16,022 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:16,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:16,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:16,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:16,023 INFO L87 Difference]: Start difference. First operand 347 states and 1087 transitions. Second operand 8 states. [2020-01-16 18:03:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:16,117 INFO L93 Difference]: Finished difference Result 670 states and 1841 transitions. [2020-01-16 18:03:16,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:16,118 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:16,119 INFO L225 Difference]: With dead ends: 670 [2020-01-16 18:03:16,119 INFO L226 Difference]: Without dead ends: 614 [2020-01-16 18:03:16,119 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:16,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2020-01-16 18:03:16,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 327. [2020-01-16 18:03:16,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-01-16 18:03:16,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 1038 transitions. [2020-01-16 18:03:16,127 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 1038 transitions. Word has length 19 [2020-01-16 18:03:16,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:16,127 INFO L478 AbstractCegarLoop]: Abstraction has 327 states and 1038 transitions. [2020-01-16 18:03:16,127 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:16,127 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 1038 transitions. [2020-01-16 18:03:16,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:16,128 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:16,128 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:16,128 INFO L426 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:16,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:16,128 INFO L82 PathProgramCache]: Analyzing trace with hash 807035554, now seen corresponding path program 151 times [2020-01-16 18:03:16,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:16,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892755276] [2020-01-16 18:03:16,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:16,333 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892755276] [2020-01-16 18:03:16,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:16,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:16,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259060094] [2020-01-16 18:03:16,333 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:16,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:16,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:16,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:16,334 INFO L87 Difference]: Start difference. First operand 327 states and 1038 transitions. Second operand 8 states. [2020-01-16 18:03:16,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:16,401 INFO L93 Difference]: Finished difference Result 629 states and 1714 transitions. [2020-01-16 18:03:16,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:16,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:16,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:16,403 INFO L225 Difference]: With dead ends: 629 [2020-01-16 18:03:16,403 INFO L226 Difference]: Without dead ends: 598 [2020-01-16 18:03:16,403 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:16,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-01-16 18:03:16,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 339. [2020-01-16 18:03:16,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-01-16 18:03:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 1064 transitions. [2020-01-16 18:03:16,410 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 1064 transitions. Word has length 19 [2020-01-16 18:03:16,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:16,411 INFO L478 AbstractCegarLoop]: Abstraction has 339 states and 1064 transitions. [2020-01-16 18:03:16,411 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:16,411 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 1064 transitions. [2020-01-16 18:03:16,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:16,411 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:16,411 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:16,412 INFO L426 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:16,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:16,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1181686740, now seen corresponding path program 152 times [2020-01-16 18:03:16,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:16,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852530273] [2020-01-16 18:03:16,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:16,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852530273] [2020-01-16 18:03:16,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:16,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:16,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304358731] [2020-01-16 18:03:16,636 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:16,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:16,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:16,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:16,636 INFO L87 Difference]: Start difference. First operand 339 states and 1064 transitions. Second operand 8 states. [2020-01-16 18:03:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:16,718 INFO L93 Difference]: Finished difference Result 638 states and 1737 transitions. [2020-01-16 18:03:16,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:16,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:16,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:16,720 INFO L225 Difference]: With dead ends: 638 [2020-01-16 18:03:16,720 INFO L226 Difference]: Without dead ends: 590 [2020-01-16 18:03:16,720 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:16,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-01-16 18:03:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 331. [2020-01-16 18:03:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-01-16 18:03:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 1046 transitions. [2020-01-16 18:03:16,726 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 1046 transitions. Word has length 19 [2020-01-16 18:03:16,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:16,726 INFO L478 AbstractCegarLoop]: Abstraction has 331 states and 1046 transitions. [2020-01-16 18:03:16,727 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 1046 transitions. [2020-01-16 18:03:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:16,727 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:16,727 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:16,727 INFO L426 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:16,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:16,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1337232860, now seen corresponding path program 153 times [2020-01-16 18:03:16,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:16,728 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541599746] [2020-01-16 18:03:16,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:16,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:16,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541599746] [2020-01-16 18:03:16,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:16,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:16,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429837274] [2020-01-16 18:03:16,931 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:16,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:16,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:16,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:16,931 INFO L87 Difference]: Start difference. First operand 331 states and 1046 transitions. Second operand 8 states. [2020-01-16 18:03:17,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:17,002 INFO L93 Difference]: Finished difference Result 606 states and 1650 transitions. [2020-01-16 18:03:17,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:17,002 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:17,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:17,004 INFO L225 Difference]: With dead ends: 606 [2020-01-16 18:03:17,004 INFO L226 Difference]: Without dead ends: 575 [2020-01-16 18:03:17,004 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:17,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-01-16 18:03:17,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 334. [2020-01-16 18:03:17,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-01-16 18:03:17,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 1050 transitions. [2020-01-16 18:03:17,010 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 1050 transitions. Word has length 19 [2020-01-16 18:03:17,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:17,010 INFO L478 AbstractCegarLoop]: Abstraction has 334 states and 1050 transitions. [2020-01-16 18:03:17,010 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:17,010 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 1050 transitions. [2020-01-16 18:03:17,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:17,011 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:17,011 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:17,011 INFO L426 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:17,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:17,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1693132272, now seen corresponding path program 1 times [2020-01-16 18:03:17,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:17,012 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788044481] [2020-01-16 18:03:17,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:17,021 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788044481] [2020-01-16 18:03:17,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:17,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:03:17,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777807095] [2020-01-16 18:03:17,022 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:03:17,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:17,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:03:17,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:03:17,022 INFO L87 Difference]: Start difference. First operand 334 states and 1050 transitions. Second operand 3 states. [2020-01-16 18:03:17,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:17,026 INFO L93 Difference]: Finished difference Result 220 states and 662 transitions. [2020-01-16 18:03:17,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:03:17,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-01-16 18:03:17,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:17,026 INFO L225 Difference]: With dead ends: 220 [2020-01-16 18:03:17,026 INFO L226 Difference]: Without dead ends: 220 [2020-01-16 18:03:17,027 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:03:17,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-01-16 18:03:17,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-01-16 18:03:17,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-01-16 18:03:17,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 662 transitions. [2020-01-16 18:03:17,031 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 662 transitions. Word has length 19 [2020-01-16 18:03:17,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:17,031 INFO L478 AbstractCegarLoop]: Abstraction has 220 states and 662 transitions. [2020-01-16 18:03:17,031 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:03:17,031 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 662 transitions. [2020-01-16 18:03:17,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:17,032 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:17,032 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:17,032 INFO L426 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:17,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:17,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1596291086, now seen corresponding path program 154 times [2020-01-16 18:03:17,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:17,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125241476] [2020-01-16 18:03:17,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:17,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125241476] [2020-01-16 18:03:17,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:17,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:17,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551261328] [2020-01-16 18:03:17,238 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:17,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:17,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:17,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:17,239 INFO L87 Difference]: Start difference. First operand 220 states and 662 transitions. Second operand 8 states. [2020-01-16 18:03:17,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:17,305 INFO L93 Difference]: Finished difference Result 336 states and 884 transitions. [2020-01-16 18:03:17,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:17,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:17,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:17,307 INFO L225 Difference]: With dead ends: 336 [2020-01-16 18:03:17,307 INFO L226 Difference]: Without dead ends: 323 [2020-01-16 18:03:17,308 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:17,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-01-16 18:03:17,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 217. [2020-01-16 18:03:17,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-01-16 18:03:17,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 655 transitions. [2020-01-16 18:03:17,313 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 655 transitions. Word has length 19 [2020-01-16 18:03:17,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:17,313 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 655 transitions. [2020-01-16 18:03:17,313 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:17,313 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 655 transitions. [2020-01-16 18:03:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:17,314 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:17,314 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:17,314 INFO L426 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:17,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:17,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1035428716, now seen corresponding path program 155 times [2020-01-16 18:03:17,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:17,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324323061] [2020-01-16 18:03:17,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:17,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324323061] [2020-01-16 18:03:17,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:17,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:17,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35847754] [2020-01-16 18:03:17,505 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:17,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:17,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:17,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:17,505 INFO L87 Difference]: Start difference. First operand 217 states and 655 transitions. Second operand 8 states. [2020-01-16 18:03:17,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:17,597 INFO L93 Difference]: Finished difference Result 348 states and 900 transitions. [2020-01-16 18:03:17,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:17,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:17,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:17,599 INFO L225 Difference]: With dead ends: 348 [2020-01-16 18:03:17,599 INFO L226 Difference]: Without dead ends: 334 [2020-01-16 18:03:17,599 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:17,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-01-16 18:03:17,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 219. [2020-01-16 18:03:17,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-01-16 18:03:17,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 658 transitions. [2020-01-16 18:03:17,604 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 658 transitions. Word has length 19 [2020-01-16 18:03:17,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:17,604 INFO L478 AbstractCegarLoop]: Abstraction has 219 states and 658 transitions. [2020-01-16 18:03:17,605 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:17,605 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 658 transitions. [2020-01-16 18:03:17,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:17,605 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:17,605 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:17,605 INFO L426 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:17,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:17,605 INFO L82 PathProgramCache]: Analyzing trace with hash 84701114, now seen corresponding path program 156 times [2020-01-16 18:03:17,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:17,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860259590] [2020-01-16 18:03:17,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:17,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:17,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860259590] [2020-01-16 18:03:17,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:17,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:17,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106851765] [2020-01-16 18:03:17,800 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:17,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:17,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:17,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:17,801 INFO L87 Difference]: Start difference. First operand 219 states and 658 transitions. Second operand 8 states. [2020-01-16 18:03:17,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:17,864 INFO L93 Difference]: Finished difference Result 335 states and 880 transitions. [2020-01-16 18:03:17,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:17,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:17,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:17,866 INFO L225 Difference]: With dead ends: 335 [2020-01-16 18:03:17,866 INFO L226 Difference]: Without dead ends: 319 [2020-01-16 18:03:17,866 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:17,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-01-16 18:03:17,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 213. [2020-01-16 18:03:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-01-16 18:03:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 646 transitions. [2020-01-16 18:03:17,871 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 646 transitions. Word has length 19 [2020-01-16 18:03:17,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:17,871 INFO L478 AbstractCegarLoop]: Abstraction has 213 states and 646 transitions. [2020-01-16 18:03:17,871 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:17,871 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 646 transitions. [2020-01-16 18:03:17,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:17,872 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:17,872 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:17,872 INFO L426 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:17,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:17,872 INFO L82 PathProgramCache]: Analyzing trace with hash -694390430, now seen corresponding path program 157 times [2020-01-16 18:03:17,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:17,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413044053] [2020-01-16 18:03:17,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:18,068 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413044053] [2020-01-16 18:03:18,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:18,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:18,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959638887] [2020-01-16 18:03:18,069 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:18,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:18,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:18,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:18,069 INFO L87 Difference]: Start difference. First operand 213 states and 646 transitions. Second operand 8 states. [2020-01-16 18:03:18,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:18,146 INFO L93 Difference]: Finished difference Result 363 states and 936 transitions. [2020-01-16 18:03:18,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:18,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:18,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:18,147 INFO L225 Difference]: With dead ends: 363 [2020-01-16 18:03:18,147 INFO L226 Difference]: Without dead ends: 347 [2020-01-16 18:03:18,148 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:18,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-01-16 18:03:18,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 219. [2020-01-16 18:03:18,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-01-16 18:03:18,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 660 transitions. [2020-01-16 18:03:18,153 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 660 transitions. Word has length 19 [2020-01-16 18:03:18,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:18,153 INFO L478 AbstractCegarLoop]: Abstraction has 219 states and 660 transitions. [2020-01-16 18:03:18,153 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:18,153 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 660 transitions. [2020-01-16 18:03:18,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:18,153 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:18,154 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:18,154 INFO L426 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:18,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:18,154 INFO L82 PathProgramCache]: Analyzing trace with hash -435332204, now seen corresponding path program 158 times [2020-01-16 18:03:18,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:18,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191678621] [2020-01-16 18:03:18,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:18,361 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191678621] [2020-01-16 18:03:18,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:18,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:18,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502186584] [2020-01-16 18:03:18,362 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:18,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:18,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:18,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:18,362 INFO L87 Difference]: Start difference. First operand 219 states and 660 transitions. Second operand 8 states. [2020-01-16 18:03:18,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:18,430 INFO L93 Difference]: Finished difference Result 357 states and 921 transitions. [2020-01-16 18:03:18,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:18,431 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:18,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:18,432 INFO L225 Difference]: With dead ends: 357 [2020-01-16 18:03:18,432 INFO L226 Difference]: Without dead ends: 344 [2020-01-16 18:03:18,432 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:18,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-01-16 18:03:18,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 216. [2020-01-16 18:03:18,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-01-16 18:03:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 653 transitions. [2020-01-16 18:03:18,437 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 653 transitions. Word has length 19 [2020-01-16 18:03:18,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:18,437 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 653 transitions. [2020-01-16 18:03:18,437 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 653 transitions. [2020-01-16 18:03:18,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:18,438 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:18,438 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:18,438 INFO L426 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:18,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:18,438 INFO L82 PathProgramCache]: Analyzing trace with hash 399701158, now seen corresponding path program 159 times [2020-01-16 18:03:18,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:18,439 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372817006] [2020-01-16 18:03:18,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:18,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372817006] [2020-01-16 18:03:18,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:18,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:18,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984103743] [2020-01-16 18:03:18,642 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:18,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:18,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:18,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:18,643 INFO L87 Difference]: Start difference. First operand 216 states and 653 transitions. Second operand 8 states. [2020-01-16 18:03:18,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:18,714 INFO L93 Difference]: Finished difference Result 363 states and 933 transitions. [2020-01-16 18:03:18,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:18,715 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:18,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:18,716 INFO L225 Difference]: With dead ends: 363 [2020-01-16 18:03:18,716 INFO L226 Difference]: Without dead ends: 347 [2020-01-16 18:03:18,716 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-01-16 18:03:18,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 222. [2020-01-16 18:03:18,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-01-16 18:03:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 664 transitions. [2020-01-16 18:03:18,721 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 664 transitions. Word has length 19 [2020-01-16 18:03:18,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:18,722 INFO L478 AbstractCegarLoop]: Abstraction has 222 states and 664 transitions. [2020-01-16 18:03:18,722 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:18,722 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 664 transitions. [2020-01-16 18:03:18,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:18,722 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:18,722 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:18,722 INFO L426 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:18,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:18,723 INFO L82 PathProgramCache]: Analyzing trace with hash -576503592, now seen corresponding path program 160 times [2020-01-16 18:03:18,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:18,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991777095] [2020-01-16 18:03:18,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:18,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:18,916 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991777095] [2020-01-16 18:03:18,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:18,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:18,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993637965] [2020-01-16 18:03:18,917 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:18,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:18,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:18,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:18,917 INFO L87 Difference]: Start difference. First operand 222 states and 664 transitions. Second operand 8 states. [2020-01-16 18:03:19,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:19,010 INFO L93 Difference]: Finished difference Result 360 states and 922 transitions. [2020-01-16 18:03:19,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:19,010 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:19,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:19,011 INFO L225 Difference]: With dead ends: 360 [2020-01-16 18:03:19,011 INFO L226 Difference]: Without dead ends: 341 [2020-01-16 18:03:19,012 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-01-16 18:03:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 216. [2020-01-16 18:03:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-01-16 18:03:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 650 transitions. [2020-01-16 18:03:19,018 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 650 transitions. Word has length 19 [2020-01-16 18:03:19,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:19,018 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 650 transitions. [2020-01-16 18:03:19,018 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:19,018 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 650 transitions. [2020-01-16 18:03:19,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:19,018 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:19,019 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:19,019 INFO L426 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:19,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:19,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1883903552, now seen corresponding path program 161 times [2020-01-16 18:03:19,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:19,019 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266749222] [2020-01-16 18:03:19,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:19,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:19,223 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266749222] [2020-01-16 18:03:19,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:19,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:19,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686018155] [2020-01-16 18:03:19,223 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:19,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:19,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:19,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:19,224 INFO L87 Difference]: Start difference. First operand 216 states and 650 transitions. Second operand 8 states. [2020-01-16 18:03:19,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:19,288 INFO L93 Difference]: Finished difference Result 347 states and 894 transitions. [2020-01-16 18:03:19,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:19,288 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:19,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:19,289 INFO L225 Difference]: With dead ends: 347 [2020-01-16 18:03:19,289 INFO L226 Difference]: Without dead ends: 337 [2020-01-16 18:03:19,290 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:19,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-01-16 18:03:19,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 218. [2020-01-16 18:03:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-01-16 18:03:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 653 transitions. [2020-01-16 18:03:19,295 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 653 transitions. Word has length 19 [2020-01-16 18:03:19,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:19,295 INFO L478 AbstractCegarLoop]: Abstraction has 218 states and 653 transitions. [2020-01-16 18:03:19,295 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:19,295 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 653 transitions. [2020-01-16 18:03:19,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:19,296 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:19,296 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:19,296 INFO L426 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:19,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:19,296 INFO L82 PathProgramCache]: Analyzing trace with hash -394498556, now seen corresponding path program 162 times [2020-01-16 18:03:19,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:19,297 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159978683] [2020-01-16 18:03:19,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:19,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159978683] [2020-01-16 18:03:19,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:19,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:19,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714248133] [2020-01-16 18:03:19,494 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:19,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:19,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:19,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:19,495 INFO L87 Difference]: Start difference. First operand 218 states and 653 transitions. Second operand 8 states. [2020-01-16 18:03:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:19,588 INFO L93 Difference]: Finished difference Result 345 states and 889 transitions. [2020-01-16 18:03:19,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:19,589 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:19,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:19,590 INFO L225 Difference]: With dead ends: 345 [2020-01-16 18:03:19,590 INFO L226 Difference]: Without dead ends: 327 [2020-01-16 18:03:19,590 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-01-16 18:03:19,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 213. [2020-01-16 18:03:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-01-16 18:03:19,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 643 transitions. [2020-01-16 18:03:19,595 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 643 transitions. Word has length 19 [2020-01-16 18:03:19,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:19,595 INFO L478 AbstractCegarLoop]: Abstraction has 213 states and 643 transitions. [2020-01-16 18:03:19,596 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:19,596 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 643 transitions. [2020-01-16 18:03:19,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:19,596 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:19,596 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:19,596 INFO L426 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:19,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:19,596 INFO L82 PathProgramCache]: Analyzing trace with hash 600573882, now seen corresponding path program 163 times [2020-01-16 18:03:19,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:19,597 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618728837] [2020-01-16 18:03:19,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:19,784 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618728837] [2020-01-16 18:03:19,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:19,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:19,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539125622] [2020-01-16 18:03:19,785 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:19,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:19,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:19,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:19,785 INFO L87 Difference]: Start difference. First operand 213 states and 643 transitions. Second operand 8 states. [2020-01-16 18:03:19,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:19,868 INFO L93 Difference]: Finished difference Result 353 states and 915 transitions. [2020-01-16 18:03:19,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:19,869 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:19,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:19,870 INFO L225 Difference]: With dead ends: 353 [2020-01-16 18:03:19,870 INFO L226 Difference]: Without dead ends: 339 [2020-01-16 18:03:19,870 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:19,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-01-16 18:03:19,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 217. [2020-01-16 18:03:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-01-16 18:03:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 653 transitions. [2020-01-16 18:03:19,875 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 653 transitions. Word has length 19 [2020-01-16 18:03:19,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:19,876 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 653 transitions. [2020-01-16 18:03:19,876 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:19,876 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 653 transitions. [2020-01-16 18:03:19,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:19,876 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:19,876 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:19,876 INFO L426 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:19,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:19,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1720703712, now seen corresponding path program 164 times [2020-01-16 18:03:19,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:19,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931783518] [2020-01-16 18:03:19,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:20,083 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931783518] [2020-01-16 18:03:20,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:20,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:20,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468556853] [2020-01-16 18:03:20,084 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:20,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:20,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:20,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:20,084 INFO L87 Difference]: Start difference. First operand 217 states and 653 transitions. Second operand 8 states. [2020-01-16 18:03:20,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:20,160 INFO L93 Difference]: Finished difference Result 349 states and 904 transitions. [2020-01-16 18:03:20,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:20,160 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:20,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:20,161 INFO L225 Difference]: With dead ends: 349 [2020-01-16 18:03:20,161 INFO L226 Difference]: Without dead ends: 337 [2020-01-16 18:03:20,161 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:20,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-01-16 18:03:20,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 215. [2020-01-16 18:03:20,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-01-16 18:03:20,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 648 transitions. [2020-01-16 18:03:20,166 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 648 transitions. Word has length 19 [2020-01-16 18:03:20,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:20,166 INFO L478 AbstractCegarLoop]: Abstraction has 215 states and 648 transitions. [2020-01-16 18:03:20,166 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:20,166 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 648 transitions. [2020-01-16 18:03:20,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:20,167 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:20,167 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:20,167 INFO L426 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:20,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:20,167 INFO L82 PathProgramCache]: Analyzing trace with hash -472511498, now seen corresponding path program 165 times [2020-01-16 18:03:20,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:20,167 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940729948] [2020-01-16 18:03:20,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:20,368 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940729948] [2020-01-16 18:03:20,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:20,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:20,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044375393] [2020-01-16 18:03:20,369 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:20,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:20,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:20,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:20,369 INFO L87 Difference]: Start difference. First operand 215 states and 648 transitions. Second operand 8 states. [2020-01-16 18:03:20,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:20,457 INFO L93 Difference]: Finished difference Result 354 states and 915 transitions. [2020-01-16 18:03:20,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:20,457 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:20,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:20,458 INFO L225 Difference]: With dead ends: 354 [2020-01-16 18:03:20,458 INFO L226 Difference]: Without dead ends: 340 [2020-01-16 18:03:20,459 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:20,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-01-16 18:03:20,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 220. [2020-01-16 18:03:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-01-16 18:03:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 658 transitions. [2020-01-16 18:03:20,464 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 658 transitions. Word has length 19 [2020-01-16 18:03:20,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:20,464 INFO L478 AbstractCegarLoop]: Abstraction has 220 states and 658 transitions. [2020-01-16 18:03:20,464 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:20,464 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 658 transitions. [2020-01-16 18:03:20,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:20,465 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:20,465 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:20,465 INFO L426 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:20,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:20,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1114568416, now seen corresponding path program 166 times [2020-01-16 18:03:20,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:20,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112507392] [2020-01-16 18:03:20,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:20,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:20,664 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112507392] [2020-01-16 18:03:20,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:20,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:20,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48136255] [2020-01-16 18:03:20,664 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:20,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:20,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:20,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:20,665 INFO L87 Difference]: Start difference. First operand 220 states and 658 transitions. Second operand 8 states. [2020-01-16 18:03:20,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:20,749 INFO L93 Difference]: Finished difference Result 353 states and 908 transitions. [2020-01-16 18:03:20,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:20,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:20,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:20,750 INFO L225 Difference]: With dead ends: 353 [2020-01-16 18:03:20,750 INFO L226 Difference]: Without dead ends: 335 [2020-01-16 18:03:20,751 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:20,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-01-16 18:03:20,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 215. [2020-01-16 18:03:20,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-01-16 18:03:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 646 transitions. [2020-01-16 18:03:20,756 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 646 transitions. Word has length 19 [2020-01-16 18:03:20,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:20,756 INFO L478 AbstractCegarLoop]: Abstraction has 215 states and 646 transitions. [2020-01-16 18:03:20,756 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:20,756 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 646 transitions. [2020-01-16 18:03:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:20,757 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:20,757 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:20,757 INFO L426 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:20,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1498552428, now seen corresponding path program 167 times [2020-01-16 18:03:20,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:20,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101277590] [2020-01-16 18:03:20,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:20,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101277590] [2020-01-16 18:03:20,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:20,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:20,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11011746] [2020-01-16 18:03:20,961 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:20,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:20,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:20,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:20,962 INFO L87 Difference]: Start difference. First operand 215 states and 646 transitions. Second operand 8 states. [2020-01-16 18:03:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:21,043 INFO L93 Difference]: Finished difference Result 343 states and 885 transitions. [2020-01-16 18:03:21,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:21,044 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:21,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:21,044 INFO L225 Difference]: With dead ends: 343 [2020-01-16 18:03:21,045 INFO L226 Difference]: Without dead ends: 333 [2020-01-16 18:03:21,045 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:21,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-01-16 18:03:21,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 217. [2020-01-16 18:03:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-01-16 18:03:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 649 transitions. [2020-01-16 18:03:21,050 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 649 transitions. Word has length 19 [2020-01-16 18:03:21,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:21,050 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 649 transitions. [2020-01-16 18:03:21,050 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:21,050 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 649 transitions. [2020-01-16 18:03:21,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:21,051 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:21,051 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:21,051 INFO L426 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:21,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:21,051 INFO L82 PathProgramCache]: Analyzing trace with hash -9147432, now seen corresponding path program 168 times [2020-01-16 18:03:21,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:21,052 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063984444] [2020-01-16 18:03:21,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:21,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063984444] [2020-01-16 18:03:21,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:21,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:21,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323036474] [2020-01-16 18:03:21,252 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:21,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:21,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:21,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:21,252 INFO L87 Difference]: Start difference. First operand 217 states and 649 transitions. Second operand 8 states. [2020-01-16 18:03:21,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:21,335 INFO L93 Difference]: Finished difference Result 341 states and 880 transitions. [2020-01-16 18:03:21,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:21,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:21,336 INFO L225 Difference]: With dead ends: 341 [2020-01-16 18:03:21,336 INFO L226 Difference]: Without dead ends: 319 [2020-01-16 18:03:21,336 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:21,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-01-16 18:03:21,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 208. [2020-01-16 18:03:21,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-01-16 18:03:21,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 632 transitions. [2020-01-16 18:03:21,342 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 632 transitions. Word has length 19 [2020-01-16 18:03:21,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:21,342 INFO L478 AbstractCegarLoop]: Abstraction has 208 states and 632 transitions. [2020-01-16 18:03:21,342 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:21,342 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 632 transitions. [2020-01-16 18:03:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:21,342 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:21,343 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:21,343 INFO L426 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:21,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:21,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1927068432, now seen corresponding path program 169 times [2020-01-16 18:03:21,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:21,343 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143862850] [2020-01-16 18:03:21,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:21,618 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143862850] [2020-01-16 18:03:21,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:21,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:21,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802367684] [2020-01-16 18:03:21,618 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:21,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:21,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:21,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:21,619 INFO L87 Difference]: Start difference. First operand 208 states and 632 transitions. Second operand 8 states. [2020-01-16 18:03:21,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:21,679 INFO L93 Difference]: Finished difference Result 378 states and 982 transitions. [2020-01-16 18:03:21,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:21,679 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:21,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:21,680 INFO L225 Difference]: With dead ends: 378 [2020-01-16 18:03:21,680 INFO L226 Difference]: Without dead ends: 362 [2020-01-16 18:03:21,680 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:21,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-01-16 18:03:21,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 224. [2020-01-16 18:03:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-01-16 18:03:21,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 674 transitions. [2020-01-16 18:03:21,685 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 674 transitions. Word has length 19 [2020-01-16 18:03:21,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:21,686 INFO L478 AbstractCegarLoop]: Abstraction has 224 states and 674 transitions. [2020-01-16 18:03:21,686 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:21,686 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 674 transitions. [2020-01-16 18:03:21,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:21,686 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:21,686 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:21,686 INFO L426 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:21,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:21,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1552417246, now seen corresponding path program 170 times [2020-01-16 18:03:21,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:21,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157676733] [2020-01-16 18:03:21,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:21,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157676733] [2020-01-16 18:03:21,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:21,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:21,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388340164] [2020-01-16 18:03:21,886 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:21,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:21,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:21,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:21,886 INFO L87 Difference]: Start difference. First operand 224 states and 674 transitions. Second operand 8 states. [2020-01-16 18:03:21,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:21,975 INFO L93 Difference]: Finished difference Result 376 states and 972 transitions. [2020-01-16 18:03:21,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:21,976 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:21,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:21,976 INFO L225 Difference]: With dead ends: 376 [2020-01-16 18:03:21,977 INFO L226 Difference]: Without dead ends: 354 [2020-01-16 18:03:21,977 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:21,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-01-16 18:03:21,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 216. [2020-01-16 18:03:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-01-16 18:03:21,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 656 transitions. [2020-01-16 18:03:21,982 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 656 transitions. Word has length 19 [2020-01-16 18:03:21,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:21,983 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 656 transitions. [2020-01-16 18:03:21,983 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:21,983 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 656 transitions. [2020-01-16 18:03:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:21,983 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:21,983 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:21,983 INFO L426 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:21,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:21,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1396871126, now seen corresponding path program 171 times [2020-01-16 18:03:21,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:21,984 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559072528] [2020-01-16 18:03:21,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:22,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:22,171 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559072528] [2020-01-16 18:03:22,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:22,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:22,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573520262] [2020-01-16 18:03:22,171 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:22,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:22,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:22,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:22,172 INFO L87 Difference]: Start difference. First operand 216 states and 656 transitions. Second operand 8 states. [2020-01-16 18:03:22,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:22,237 INFO L93 Difference]: Finished difference Result 369 states and 955 transitions. [2020-01-16 18:03:22,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:22,238 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:22,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:22,239 INFO L225 Difference]: With dead ends: 369 [2020-01-16 18:03:22,239 INFO L226 Difference]: Without dead ends: 353 [2020-01-16 18:03:22,239 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:22,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-01-16 18:03:22,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 219. [2020-01-16 18:03:22,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-01-16 18:03:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 660 transitions. [2020-01-16 18:03:22,244 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 660 transitions. Word has length 19 [2020-01-16 18:03:22,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:22,245 INFO L478 AbstractCegarLoop]: Abstraction has 219 states and 660 transitions. [2020-01-16 18:03:22,245 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:22,245 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 660 transitions. [2020-01-16 18:03:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:22,245 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:22,245 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:22,245 INFO L426 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:22,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:22,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1137812900, now seen corresponding path program 172 times [2020-01-16 18:03:22,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:22,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160591573] [2020-01-16 18:03:22,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:22,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160591573] [2020-01-16 18:03:22,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:22,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:22,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337790816] [2020-01-16 18:03:22,548 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:22,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:22,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:22,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:22,548 INFO L87 Difference]: Start difference. First operand 219 states and 660 transitions. Second operand 8 states. [2020-01-16 18:03:22,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:22,643 INFO L93 Difference]: Finished difference Result 363 states and 940 transitions. [2020-01-16 18:03:22,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:22,643 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:22,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:22,645 INFO L225 Difference]: With dead ends: 363 [2020-01-16 18:03:22,645 INFO L226 Difference]: Without dead ends: 350 [2020-01-16 18:03:22,645 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:22,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-01-16 18:03:22,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 216. [2020-01-16 18:03:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-01-16 18:03:22,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 653 transitions. [2020-01-16 18:03:22,654 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 653 transitions. Word has length 19 [2020-01-16 18:03:22,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:22,654 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 653 transitions. [2020-01-16 18:03:22,655 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:22,655 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 653 transitions. [2020-01-16 18:03:22,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:22,656 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:22,656 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:22,656 INFO L426 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:22,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:22,657 INFO L82 PathProgramCache]: Analyzing trace with hash 525434594, now seen corresponding path program 173 times [2020-01-16 18:03:22,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:22,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812442965] [2020-01-16 18:03:22,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:22,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812442965] [2020-01-16 18:03:22,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:22,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:22,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565645133] [2020-01-16 18:03:22,939 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:22,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:22,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:22,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:22,940 INFO L87 Difference]: Start difference. First operand 216 states and 653 transitions. Second operand 8 states. [2020-01-16 18:03:23,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:23,068 INFO L93 Difference]: Finished difference Result 364 states and 944 transitions. [2020-01-16 18:03:23,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:23,068 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:23,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:23,070 INFO L225 Difference]: With dead ends: 364 [2020-01-16 18:03:23,070 INFO L226 Difference]: Without dead ends: 350 [2020-01-16 18:03:23,070 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:23,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-01-16 18:03:23,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 218. [2020-01-16 18:03:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-01-16 18:03:23,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 656 transitions. [2020-01-16 18:03:23,079 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 656 transitions. Word has length 19 [2020-01-16 18:03:23,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:23,080 INFO L478 AbstractCegarLoop]: Abstraction has 218 states and 656 transitions. [2020-01-16 18:03:23,080 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:23,080 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 656 transitions. [2020-01-16 18:03:23,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:23,081 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:23,081 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:23,081 INFO L426 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:23,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:23,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1645564424, now seen corresponding path program 174 times [2020-01-16 18:03:23,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:23,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914209070] [2020-01-16 18:03:23,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:23,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914209070] [2020-01-16 18:03:23,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:23,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:23,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669676403] [2020-01-16 18:03:23,297 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:23,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:23,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:23,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:23,298 INFO L87 Difference]: Start difference. First operand 218 states and 656 transitions. Second operand 8 states. [2020-01-16 18:03:23,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:23,364 INFO L93 Difference]: Finished difference Result 360 states and 933 transitions. [2020-01-16 18:03:23,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:23,365 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:23,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:23,365 INFO L225 Difference]: With dead ends: 360 [2020-01-16 18:03:23,365 INFO L226 Difference]: Without dead ends: 344 [2020-01-16 18:03:23,366 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:23,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-01-16 18:03:23,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 212. [2020-01-16 18:03:23,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-01-16 18:03:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 644 transitions. [2020-01-16 18:03:23,371 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 644 transitions. Word has length 19 [2020-01-16 18:03:23,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:23,372 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 644 transitions. [2020-01-16 18:03:23,372 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 644 transitions. [2020-01-16 18:03:23,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:23,372 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:23,372 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:23,373 INFO L426 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:23,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:23,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1945413138, now seen corresponding path program 175 times [2020-01-16 18:03:23,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:23,373 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374633537] [2020-01-16 18:03:23,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:23,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374633537] [2020-01-16 18:03:23,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:23,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:23,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922128316] [2020-01-16 18:03:23,582 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:23,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:23,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:23,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:23,583 INFO L87 Difference]: Start difference. First operand 212 states and 644 transitions. Second operand 8 states. [2020-01-16 18:03:23,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:23,643 INFO L93 Difference]: Finished difference Result 380 states and 985 transitions. [2020-01-16 18:03:23,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:23,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:23,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:23,645 INFO L225 Difference]: With dead ends: 380 [2020-01-16 18:03:23,645 INFO L226 Difference]: Without dead ends: 364 [2020-01-16 18:03:23,645 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:23,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-01-16 18:03:23,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 226. [2020-01-16 18:03:23,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-01-16 18:03:23,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 679 transitions. [2020-01-16 18:03:23,651 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 679 transitions. Word has length 19 [2020-01-16 18:03:23,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:23,651 INFO L478 AbstractCegarLoop]: Abstraction has 226 states and 679 transitions. [2020-01-16 18:03:23,651 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:23,651 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 679 transitions. [2020-01-16 18:03:23,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:23,652 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:23,652 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:23,652 INFO L426 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:23,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:23,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1974902972, now seen corresponding path program 176 times [2020-01-16 18:03:23,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:23,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680968780] [2020-01-16 18:03:23,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:23,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680968780] [2020-01-16 18:03:23,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:23,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:23,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540972112] [2020-01-16 18:03:23,860 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:23,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:23,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:23,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:23,860 INFO L87 Difference]: Start difference. First operand 226 states and 679 transitions. Second operand 8 states. [2020-01-16 18:03:23,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:23,952 INFO L93 Difference]: Finished difference Result 378 states and 975 transitions. [2020-01-16 18:03:23,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:23,952 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:23,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:23,953 INFO L225 Difference]: With dead ends: 378 [2020-01-16 18:03:23,954 INFO L226 Difference]: Without dead ends: 356 [2020-01-16 18:03:23,954 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:23,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-01-16 18:03:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 218. [2020-01-16 18:03:23,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-01-16 18:03:23,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 659 transitions. [2020-01-16 18:03:23,960 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 659 transitions. Word has length 19 [2020-01-16 18:03:23,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:23,960 INFO L478 AbstractCegarLoop]: Abstraction has 218 states and 659 transitions. [2020-01-16 18:03:23,960 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 659 transitions. [2020-01-16 18:03:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:23,961 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:23,961 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:23,961 INFO L426 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:23,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:23,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1493760628, now seen corresponding path program 177 times [2020-01-16 18:03:23,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:23,962 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043479814] [2020-01-16 18:03:23,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:24,159 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043479814] [2020-01-16 18:03:24,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:24,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:24,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84712917] [2020-01-16 18:03:24,159 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:24,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:24,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:24,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:24,160 INFO L87 Difference]: Start difference. First operand 218 states and 659 transitions. Second operand 8 states. [2020-01-16 18:03:24,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:24,232 INFO L93 Difference]: Finished difference Result 375 states and 968 transitions. [2020-01-16 18:03:24,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:24,233 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:24,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:24,234 INFO L225 Difference]: With dead ends: 375 [2020-01-16 18:03:24,234 INFO L226 Difference]: Without dead ends: 359 [2020-01-16 18:03:24,234 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:24,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-01-16 18:03:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 223. [2020-01-16 18:03:24,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-01-16 18:03:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 668 transitions. [2020-01-16 18:03:24,239 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 668 transitions. Word has length 19 [2020-01-16 18:03:24,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:24,239 INFO L478 AbstractCegarLoop]: Abstraction has 223 states and 668 transitions. [2020-01-16 18:03:24,239 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:24,239 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 668 transitions. [2020-01-16 18:03:24,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:24,239 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:24,239 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:24,240 INFO L426 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:24,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:24,240 INFO L82 PathProgramCache]: Analyzing trace with hash 2050144574, now seen corresponding path program 178 times [2020-01-16 18:03:24,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:24,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360518651] [2020-01-16 18:03:24,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:24,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360518651] [2020-01-16 18:03:24,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:24,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:24,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281171779] [2020-01-16 18:03:24,432 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:24,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:24,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:24,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:24,433 INFO L87 Difference]: Start difference. First operand 223 states and 668 transitions. Second operand 8 states. [2020-01-16 18:03:24,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:24,516 INFO L93 Difference]: Finished difference Result 371 states and 956 transitions. [2020-01-16 18:03:24,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:24,517 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:24,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:24,518 INFO L225 Difference]: With dead ends: 371 [2020-01-16 18:03:24,518 INFO L226 Difference]: Without dead ends: 354 [2020-01-16 18:03:24,518 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:24,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-01-16 18:03:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 218. [2020-01-16 18:03:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-01-16 18:03:24,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 654 transitions. [2020-01-16 18:03:24,528 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 654 transitions. Word has length 19 [2020-01-16 18:03:24,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:24,529 INFO L478 AbstractCegarLoop]: Abstraction has 218 states and 654 transitions. [2020-01-16 18:03:24,529 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 654 transitions. [2020-01-16 18:03:24,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:24,529 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:24,530 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:24,530 INFO L426 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:24,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:24,530 INFO L82 PathProgramCache]: Analyzing trace with hash 780024098, now seen corresponding path program 179 times [2020-01-16 18:03:24,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:24,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251454651] [2020-01-16 18:03:24,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:24,718 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251454651] [2020-01-16 18:03:24,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:24,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:24,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584421966] [2020-01-16 18:03:24,718 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:24,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:24,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:24,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:24,719 INFO L87 Difference]: Start difference. First operand 218 states and 654 transitions. Second operand 8 states. [2020-01-16 18:03:24,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:24,804 INFO L93 Difference]: Finished difference Result 370 states and 955 transitions. [2020-01-16 18:03:24,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:24,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:24,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:24,805 INFO L225 Difference]: With dead ends: 370 [2020-01-16 18:03:24,805 INFO L226 Difference]: Without dead ends: 356 [2020-01-16 18:03:24,805 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:24,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-01-16 18:03:24,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 222. [2020-01-16 18:03:24,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-01-16 18:03:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 662 transitions. [2020-01-16 18:03:24,810 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 662 transitions. Word has length 19 [2020-01-16 18:03:24,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:24,810 INFO L478 AbstractCegarLoop]: Abstraction has 222 states and 662 transitions. [2020-01-16 18:03:24,810 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:24,810 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 662 transitions. [2020-01-16 18:03:24,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:24,811 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:24,811 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:24,811 INFO L426 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:24,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:24,811 INFO L82 PathProgramCache]: Analyzing trace with hash 779429452, now seen corresponding path program 180 times [2020-01-16 18:03:24,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:24,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116806453] [2020-01-16 18:03:24,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:25,001 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116806453] [2020-01-16 18:03:25,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:25,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:25,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361530388] [2020-01-16 18:03:25,001 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:25,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:25,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:25,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:25,002 INFO L87 Difference]: Start difference. First operand 222 states and 662 transitions. Second operand 8 states. [2020-01-16 18:03:25,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:25,093 INFO L93 Difference]: Finished difference Result 368 states and 947 transitions. [2020-01-16 18:03:25,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:25,094 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:25,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:25,094 INFO L225 Difference]: With dead ends: 368 [2020-01-16 18:03:25,095 INFO L226 Difference]: Without dead ends: 346 [2020-01-16 18:03:25,095 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-01-16 18:03:25,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 212. [2020-01-16 18:03:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-01-16 18:03:25,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 640 transitions. [2020-01-16 18:03:25,100 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 640 transitions. Word has length 19 [2020-01-16 18:03:25,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:25,100 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 640 transitions. [2020-01-16 18:03:25,100 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:25,100 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 640 transitions. [2020-01-16 18:03:25,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:25,101 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:25,101 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:25,101 INFO L426 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:25,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:25,101 INFO L82 PathProgramCache]: Analyzing trace with hash -637075472, now seen corresponding path program 181 times [2020-01-16 18:03:25,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:25,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662680950] [2020-01-16 18:03:25,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:25,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662680950] [2020-01-16 18:03:25,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:25,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:25,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418561315] [2020-01-16 18:03:25,295 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:25,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:25,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:25,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:25,296 INFO L87 Difference]: Start difference. First operand 212 states and 640 transitions. Second operand 8 states. [2020-01-16 18:03:25,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:25,371 INFO L93 Difference]: Finished difference Result 357 states and 917 transitions. [2020-01-16 18:03:25,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:25,372 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:25,373 INFO L225 Difference]: With dead ends: 357 [2020-01-16 18:03:25,373 INFO L226 Difference]: Without dead ends: 341 [2020-01-16 18:03:25,373 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:25,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-01-16 18:03:25,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 218. [2020-01-16 18:03:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-01-16 18:03:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 654 transitions. [2020-01-16 18:03:25,378 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 654 transitions. Word has length 19 [2020-01-16 18:03:25,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:25,378 INFO L478 AbstractCegarLoop]: Abstraction has 218 states and 654 transitions. [2020-01-16 18:03:25,378 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:25,378 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 654 transitions. [2020-01-16 18:03:25,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:25,378 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:25,379 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:25,379 INFO L426 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:25,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:25,379 INFO L82 PathProgramCache]: Analyzing trace with hash -378017246, now seen corresponding path program 182 times [2020-01-16 18:03:25,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:25,379 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419137855] [2020-01-16 18:03:25,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:25,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:25,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419137855] [2020-01-16 18:03:25,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:25,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:25,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073312830] [2020-01-16 18:03:25,571 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:25,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:25,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:25,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:25,572 INFO L87 Difference]: Start difference. First operand 218 states and 654 transitions. Second operand 8 states. [2020-01-16 18:03:25,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:25,635 INFO L93 Difference]: Finished difference Result 351 states and 902 transitions. [2020-01-16 18:03:25,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:25,635 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:25,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:25,636 INFO L225 Difference]: With dead ends: 351 [2020-01-16 18:03:25,636 INFO L226 Difference]: Without dead ends: 338 [2020-01-16 18:03:25,637 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:25,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-01-16 18:03:25,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 215. [2020-01-16 18:03:25,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-01-16 18:03:25,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 647 transitions. [2020-01-16 18:03:25,641 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 647 transitions. Word has length 19 [2020-01-16 18:03:25,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:25,642 INFO L478 AbstractCegarLoop]: Abstraction has 215 states and 647 transitions. [2020-01-16 18:03:25,642 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 647 transitions. [2020-01-16 18:03:25,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:25,642 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:25,642 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:25,642 INFO L426 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:25,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:25,643 INFO L82 PathProgramCache]: Analyzing trace with hash 2057453970, now seen corresponding path program 183 times [2020-01-16 18:03:25,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:25,643 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640287373] [2020-01-16 18:03:25,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:25,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640287373] [2020-01-16 18:03:25,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:25,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:25,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421728027] [2020-01-16 18:03:25,851 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:25,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:25,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:25,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:25,852 INFO L87 Difference]: Start difference. First operand 215 states and 647 transitions. Second operand 8 states. [2020-01-16 18:03:25,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:25,920 INFO L93 Difference]: Finished difference Result 356 states and 912 transitions. [2020-01-16 18:03:25,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:25,920 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:25,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:25,921 INFO L225 Difference]: With dead ends: 356 [2020-01-16 18:03:25,921 INFO L226 Difference]: Without dead ends: 340 [2020-01-16 18:03:25,922 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:25,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-01-16 18:03:25,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 220. [2020-01-16 18:03:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-01-16 18:03:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 656 transitions. [2020-01-16 18:03:25,927 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 656 transitions. Word has length 19 [2020-01-16 18:03:25,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:25,927 INFO L478 AbstractCegarLoop]: Abstraction has 220 states and 656 transitions. [2020-01-16 18:03:25,927 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:25,927 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 656 transitions. [2020-01-16 18:03:25,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:25,927 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:25,927 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:25,927 INFO L426 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:25,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:25,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1306391876, now seen corresponding path program 184 times [2020-01-16 18:03:25,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:25,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477435586] [2020-01-16 18:03:25,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:26,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477435586] [2020-01-16 18:03:26,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:26,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:26,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753912031] [2020-01-16 18:03:26,124 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:26,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:26,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:26,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:26,125 INFO L87 Difference]: Start difference. First operand 220 states and 656 transitions. Second operand 8 states. [2020-01-16 18:03:26,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:26,224 INFO L93 Difference]: Finished difference Result 352 states and 900 transitions. [2020-01-16 18:03:26,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:26,225 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:26,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:26,226 INFO L225 Difference]: With dead ends: 352 [2020-01-16 18:03:26,226 INFO L226 Difference]: Without dead ends: 335 [2020-01-16 18:03:26,226 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:26,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-01-16 18:03:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 215. [2020-01-16 18:03:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-01-16 18:03:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 644 transitions. [2020-01-16 18:03:26,231 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 644 transitions. Word has length 19 [2020-01-16 18:03:26,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:26,231 INFO L478 AbstractCegarLoop]: Abstraction has 215 states and 644 transitions. [2020-01-16 18:03:26,231 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:26,231 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 644 transitions. [2020-01-16 18:03:26,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:26,232 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:26,232 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:26,232 INFO L426 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:26,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:26,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1837091698, now seen corresponding path program 185 times [2020-01-16 18:03:26,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:26,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139880610] [2020-01-16 18:03:26,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:26,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139880610] [2020-01-16 18:03:26,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:26,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:26,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717129923] [2020-01-16 18:03:26,449 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:26,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:26,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:26,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:26,449 INFO L87 Difference]: Start difference. First operand 215 states and 644 transitions. Second operand 8 states. [2020-01-16 18:03:26,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:26,511 INFO L93 Difference]: Finished difference Result 341 states and 876 transitions. [2020-01-16 18:03:26,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:26,512 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:26,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:26,513 INFO L225 Difference]: With dead ends: 341 [2020-01-16 18:03:26,513 INFO L226 Difference]: Without dead ends: 331 [2020-01-16 18:03:26,513 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:26,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-01-16 18:03:26,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 217. [2020-01-16 18:03:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-01-16 18:03:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 647 transitions. [2020-01-16 18:03:26,518 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 647 transitions. Word has length 19 [2020-01-16 18:03:26,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:26,519 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 647 transitions. [2020-01-16 18:03:26,519 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:26,519 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 647 transitions. [2020-01-16 18:03:26,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:26,519 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:26,519 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:26,520 INFO L426 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:26,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:26,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1602568944, now seen corresponding path program 186 times [2020-01-16 18:03:26,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:26,520 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178741998] [2020-01-16 18:03:26,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:26,719 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178741998] [2020-01-16 18:03:26,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:26,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:26,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058213432] [2020-01-16 18:03:26,720 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:26,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:26,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:26,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:26,720 INFO L87 Difference]: Start difference. First operand 217 states and 647 transitions. Second operand 8 states. [2020-01-16 18:03:26,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:26,807 INFO L93 Difference]: Finished difference Result 339 states and 871 transitions. [2020-01-16 18:03:26,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:26,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:26,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:26,808 INFO L225 Difference]: With dead ends: 339 [2020-01-16 18:03:26,808 INFO L226 Difference]: Without dead ends: 322 [2020-01-16 18:03:26,808 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:26,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-01-16 18:03:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 212. [2020-01-16 18:03:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-01-16 18:03:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 637 transitions. [2020-01-16 18:03:26,814 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 637 transitions. Word has length 19 [2020-01-16 18:03:26,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:26,814 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 637 transitions. [2020-01-16 18:03:26,814 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:26,814 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 637 transitions. [2020-01-16 18:03:26,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:26,815 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:26,815 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:26,815 INFO L426 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:26,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:26,815 INFO L82 PathProgramCache]: Analyzing trace with hash -2036640602, now seen corresponding path program 187 times [2020-01-16 18:03:26,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:26,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382396853] [2020-01-16 18:03:26,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:26,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382396853] [2020-01-16 18:03:26,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:26,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:27,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978018605] [2020-01-16 18:03:27,000 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:27,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:27,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:27,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:27,000 INFO L87 Difference]: Start difference. First operand 212 states and 637 transitions. Second operand 8 states. [2020-01-16 18:03:27,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:27,086 INFO L93 Difference]: Finished difference Result 347 states and 896 transitions. [2020-01-16 18:03:27,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:27,086 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:27,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:27,087 INFO L225 Difference]: With dead ends: 347 [2020-01-16 18:03:27,087 INFO L226 Difference]: Without dead ends: 333 [2020-01-16 18:03:27,087 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:27,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-01-16 18:03:27,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 216. [2020-01-16 18:03:27,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-01-16 18:03:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 647 transitions. [2020-01-16 18:03:27,093 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 647 transitions. Word has length 19 [2020-01-16 18:03:27,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:27,093 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 647 transitions. [2020-01-16 18:03:27,093 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:27,093 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 647 transitions. [2020-01-16 18:03:27,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:27,094 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:27,094 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:27,094 INFO L426 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:27,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:27,094 INFO L82 PathProgramCache]: Analyzing trace with hash -916510772, now seen corresponding path program 188 times [2020-01-16 18:03:27,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:27,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941026212] [2020-01-16 18:03:27,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:27,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:27,273 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941026212] [2020-01-16 18:03:27,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:27,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:27,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311894001] [2020-01-16 18:03:27,273 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:27,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:27,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:27,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:27,274 INFO L87 Difference]: Start difference. First operand 216 states and 647 transitions. Second operand 8 states. [2020-01-16 18:03:27,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:27,343 INFO L93 Difference]: Finished difference Result 343 states and 885 transitions. [2020-01-16 18:03:27,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:27,344 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:27,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:27,345 INFO L225 Difference]: With dead ends: 343 [2020-01-16 18:03:27,345 INFO L226 Difference]: Without dead ends: 331 [2020-01-16 18:03:27,345 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:27,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-01-16 18:03:27,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 214. [2020-01-16 18:03:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-01-16 18:03:27,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 642 transitions. [2020-01-16 18:03:27,350 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 642 transitions. Word has length 19 [2020-01-16 18:03:27,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:27,350 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 642 transitions. [2020-01-16 18:03:27,350 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:27,350 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 642 transitions. [2020-01-16 18:03:27,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:27,351 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:27,351 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:27,351 INFO L426 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:27,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1513624196, now seen corresponding path program 189 times [2020-01-16 18:03:27,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:27,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404037732] [2020-01-16 18:03:27,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:27,536 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404037732] [2020-01-16 18:03:27,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:27,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:27,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120102228] [2020-01-16 18:03:27,537 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:27,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:27,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:27,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:27,537 INFO L87 Difference]: Start difference. First operand 214 states and 642 transitions. Second operand 8 states. [2020-01-16 18:03:27,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:27,626 INFO L93 Difference]: Finished difference Result 347 states and 894 transitions. [2020-01-16 18:03:27,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:27,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:27,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:27,628 INFO L225 Difference]: With dead ends: 347 [2020-01-16 18:03:27,628 INFO L226 Difference]: Without dead ends: 333 [2020-01-16 18:03:27,628 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:27,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-01-16 18:03:27,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 218. [2020-01-16 18:03:27,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-01-16 18:03:27,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 650 transitions. [2020-01-16 18:03:27,634 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 650 transitions. Word has length 19 [2020-01-16 18:03:27,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:27,635 INFO L478 AbstractCegarLoop]: Abstraction has 218 states and 650 transitions. [2020-01-16 18:03:27,635 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:27,635 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 650 transitions. [2020-01-16 18:03:27,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:27,635 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:27,635 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:27,636 INFO L426 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:27,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:27,636 INFO L82 PathProgramCache]: Analyzing trace with hash 768327052, now seen corresponding path program 190 times [2020-01-16 18:03:27,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:27,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852125709] [2020-01-16 18:03:27,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:27,821 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852125709] [2020-01-16 18:03:27,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:27,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:27,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450644395] [2020-01-16 18:03:27,822 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:27,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:27,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:27,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:27,822 INFO L87 Difference]: Start difference. First operand 218 states and 650 transitions. Second operand 8 states. [2020-01-16 18:03:27,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:27,903 INFO L93 Difference]: Finished difference Result 345 states and 886 transitions. [2020-01-16 18:03:27,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:27,903 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:27,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:27,904 INFO L225 Difference]: With dead ends: 345 [2020-01-16 18:03:27,904 INFO L226 Difference]: Without dead ends: 329 [2020-01-16 18:03:27,904 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:27,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-01-16 18:03:27,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 214. [2020-01-16 18:03:27,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-01-16 18:03:27,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 640 transitions. [2020-01-16 18:03:27,910 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 640 transitions. Word has length 19 [2020-01-16 18:03:27,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:27,911 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 640 transitions. [2020-01-16 18:03:27,911 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 640 transitions. [2020-01-16 18:03:27,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:27,911 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:27,911 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:27,912 INFO L426 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:27,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:27,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1451740574, now seen corresponding path program 191 times [2020-01-16 18:03:27,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:27,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004571148] [2020-01-16 18:03:27,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:28,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:28,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004571148] [2020-01-16 18:03:28,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:28,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:28,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422547572] [2020-01-16 18:03:28,111 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:28,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:28,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:28,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:28,112 INFO L87 Difference]: Start difference. First operand 214 states and 640 transitions. Second operand 8 states. [2020-01-16 18:03:28,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:28,173 INFO L93 Difference]: Finished difference Result 337 states and 867 transitions. [2020-01-16 18:03:28,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:28,174 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:28,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:28,174 INFO L225 Difference]: With dead ends: 337 [2020-01-16 18:03:28,175 INFO L226 Difference]: Without dead ends: 327 [2020-01-16 18:03:28,175 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:28,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-01-16 18:03:28,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 216. [2020-01-16 18:03:28,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-01-16 18:03:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 643 transitions. [2020-01-16 18:03:28,181 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 643 transitions. Word has length 19 [2020-01-16 18:03:28,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:28,181 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 643 transitions. [2020-01-16 18:03:28,181 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:28,181 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 643 transitions. [2020-01-16 18:03:28,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:28,182 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:28,182 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:28,182 INFO L426 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:28,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:28,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1987920068, now seen corresponding path program 192 times [2020-01-16 18:03:28,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:28,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007961710] [2020-01-16 18:03:28,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:28,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007961710] [2020-01-16 18:03:28,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:28,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:28,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729428888] [2020-01-16 18:03:28,362 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:28,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:28,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:28,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:28,363 INFO L87 Difference]: Start difference. First operand 216 states and 643 transitions. Second operand 8 states. [2020-01-16 18:03:28,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:28,449 INFO L93 Difference]: Finished difference Result 335 states and 862 transitions. [2020-01-16 18:03:28,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:28,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:28,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:28,450 INFO L225 Difference]: With dead ends: 335 [2020-01-16 18:03:28,450 INFO L226 Difference]: Without dead ends: 315 [2020-01-16 18:03:28,451 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:28,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-01-16 18:03:28,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 208. [2020-01-16 18:03:28,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-01-16 18:03:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 628 transitions. [2020-01-16 18:03:28,456 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 628 transitions. Word has length 19 [2020-01-16 18:03:28,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:28,456 INFO L478 AbstractCegarLoop]: Abstraction has 208 states and 628 transitions. [2020-01-16 18:03:28,456 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:28,456 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 628 transitions. [2020-01-16 18:03:28,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:28,457 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:28,457 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:28,457 INFO L426 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:28,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:28,457 INFO L82 PathProgramCache]: Analyzing trace with hash 807111978, now seen corresponding path program 193 times [2020-01-16 18:03:28,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:28,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073615615] [2020-01-16 18:03:28,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:28,681 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073615615] [2020-01-16 18:03:28,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:28,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:28,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26741365] [2020-01-16 18:03:28,682 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:28,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:28,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:28,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:28,682 INFO L87 Difference]: Start difference. First operand 208 states and 628 transitions. Second operand 8 states. [2020-01-16 18:03:28,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:28,739 INFO L93 Difference]: Finished difference Result 357 states and 929 transitions. [2020-01-16 18:03:28,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:28,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:28,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:28,741 INFO L225 Difference]: With dead ends: 357 [2020-01-16 18:03:28,741 INFO L226 Difference]: Without dead ends: 341 [2020-01-16 18:03:28,741 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:28,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-01-16 18:03:28,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 217. [2020-01-16 18:03:28,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-01-16 18:03:28,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 655 transitions. [2020-01-16 18:03:28,747 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 655 transitions. Word has length 19 [2020-01-16 18:03:28,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:28,747 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 655 transitions. [2020-01-16 18:03:28,747 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:28,747 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 655 transitions. [2020-01-16 18:03:28,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:28,748 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:28,748 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:28,748 INFO L426 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:28,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:28,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1066170204, now seen corresponding path program 194 times [2020-01-16 18:03:28,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:28,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120790590] [2020-01-16 18:03:28,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:28,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120790590] [2020-01-16 18:03:28,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:28,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:28,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905890535] [2020-01-16 18:03:28,962 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:28,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:28,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:28,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:28,963 INFO L87 Difference]: Start difference. First operand 217 states and 655 transitions. Second operand 8 states. [2020-01-16 18:03:29,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:29,029 INFO L93 Difference]: Finished difference Result 351 states and 914 transitions. [2020-01-16 18:03:29,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:29,030 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:29,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:29,031 INFO L225 Difference]: With dead ends: 351 [2020-01-16 18:03:29,031 INFO L226 Difference]: Without dead ends: 338 [2020-01-16 18:03:29,031 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:29,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-01-16 18:03:29,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 214. [2020-01-16 18:03:29,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-01-16 18:03:29,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 648 transitions. [2020-01-16 18:03:29,036 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 648 transitions. Word has length 19 [2020-01-16 18:03:29,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:29,036 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 648 transitions. [2020-01-16 18:03:29,036 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:29,036 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 648 transitions. [2020-01-16 18:03:29,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:29,036 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:29,036 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:29,036 INFO L426 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:29,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:29,037 INFO L82 PathProgramCache]: Analyzing trace with hash -793325876, now seen corresponding path program 195 times [2020-01-16 18:03:29,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:29,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065901205] [2020-01-16 18:03:29,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:29,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:29,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065901205] [2020-01-16 18:03:29,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:29,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:29,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020753872] [2020-01-16 18:03:29,246 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:29,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:29,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:29,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:29,247 INFO L87 Difference]: Start difference. First operand 214 states and 648 transitions. Second operand 8 states. [2020-01-16 18:03:29,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:29,324 INFO L93 Difference]: Finished difference Result 361 states and 938 transitions. [2020-01-16 18:03:29,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:29,325 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:29,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:29,326 INFO L225 Difference]: With dead ends: 361 [2020-01-16 18:03:29,326 INFO L226 Difference]: Without dead ends: 345 [2020-01-16 18:03:29,326 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:29,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-01-16 18:03:29,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 219. [2020-01-16 18:03:29,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-01-16 18:03:29,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 657 transitions. [2020-01-16 18:03:29,332 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 657 transitions. Word has length 19 [2020-01-16 18:03:29,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:29,333 INFO L478 AbstractCegarLoop]: Abstraction has 219 states and 657 transitions. [2020-01-16 18:03:29,333 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:29,333 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 657 transitions. [2020-01-16 18:03:29,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:29,333 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:29,333 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:29,334 INFO L426 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:29,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:29,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1544387970, now seen corresponding path program 196 times [2020-01-16 18:03:29,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:29,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113884739] [2020-01-16 18:03:29,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:29,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113884739] [2020-01-16 18:03:29,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:29,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:29,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675058347] [2020-01-16 18:03:29,554 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:29,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:29,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:29,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:29,555 INFO L87 Difference]: Start difference. First operand 219 states and 657 transitions. Second operand 8 states. [2020-01-16 18:03:29,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:29,644 INFO L93 Difference]: Finished difference Result 357 states and 926 transitions. [2020-01-16 18:03:29,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:29,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:29,645 INFO L225 Difference]: With dead ends: 357 [2020-01-16 18:03:29,645 INFO L226 Difference]: Without dead ends: 340 [2020-01-16 18:03:29,645 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:29,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-01-16 18:03:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 214. [2020-01-16 18:03:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-01-16 18:03:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 645 transitions. [2020-01-16 18:03:29,651 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 645 transitions. Word has length 19 [2020-01-16 18:03:29,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:29,651 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 645 transitions. [2020-01-16 18:03:29,651 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:29,651 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 645 transitions. [2020-01-16 18:03:29,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:29,651 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:29,651 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:29,652 INFO L426 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:29,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:29,652 INFO L82 PathProgramCache]: Analyzing trace with hash -392904248, now seen corresponding path program 197 times [2020-01-16 18:03:29,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:29,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172060441] [2020-01-16 18:03:29,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:29,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172060441] [2020-01-16 18:03:29,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:29,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:29,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998892880] [2020-01-16 18:03:29,849 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:29,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:29,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:29,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:29,850 INFO L87 Difference]: Start difference. First operand 214 states and 645 transitions. Second operand 8 states. [2020-01-16 18:03:29,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:29,919 INFO L93 Difference]: Finished difference Result 346 states and 902 transitions. [2020-01-16 18:03:29,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:29,920 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:29,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:29,920 INFO L225 Difference]: With dead ends: 346 [2020-01-16 18:03:29,921 INFO L226 Difference]: Without dead ends: 336 [2020-01-16 18:03:29,921 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:29,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-01-16 18:03:29,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 216. [2020-01-16 18:03:29,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-01-16 18:03:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 648 transitions. [2020-01-16 18:03:29,926 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 648 transitions. Word has length 19 [2020-01-16 18:03:29,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:29,926 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 648 transitions. [2020-01-16 18:03:29,926 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:29,926 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 648 transitions. [2020-01-16 18:03:29,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:29,926 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:29,926 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:29,927 INFO L426 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:29,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:29,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1248210902, now seen corresponding path program 198 times [2020-01-16 18:03:29,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:29,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551942361] [2020-01-16 18:03:29,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:30,125 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551942361] [2020-01-16 18:03:30,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:30,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:30,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038849921] [2020-01-16 18:03:30,126 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:30,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:30,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:30,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:30,126 INFO L87 Difference]: Start difference. First operand 216 states and 648 transitions. Second operand 8 states. [2020-01-16 18:03:30,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:30,218 INFO L93 Difference]: Finished difference Result 348 states and 905 transitions. [2020-01-16 18:03:30,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:30,219 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:30,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:30,220 INFO L225 Difference]: With dead ends: 348 [2020-01-16 18:03:30,220 INFO L226 Difference]: Without dead ends: 331 [2020-01-16 18:03:30,220 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:30,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-01-16 18:03:30,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 211. [2020-01-16 18:03:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-01-16 18:03:30,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 638 transitions. [2020-01-16 18:03:30,226 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 638 transitions. Word has length 19 [2020-01-16 18:03:30,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:30,227 INFO L478 AbstractCegarLoop]: Abstraction has 211 states and 638 transitions. [2020-01-16 18:03:30,227 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:30,227 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 638 transitions. [2020-01-16 18:03:30,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:30,228 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:30,228 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:30,228 INFO L426 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:30,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:30,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1561821240, now seen corresponding path program 199 times [2020-01-16 18:03:30,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:30,228 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942358810] [2020-01-16 18:03:30,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:30,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942358810] [2020-01-16 18:03:30,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:30,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:30,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551852612] [2020-01-16 18:03:30,433 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:30,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:30,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:30,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:30,433 INFO L87 Difference]: Start difference. First operand 211 states and 638 transitions. Second operand 8 states. [2020-01-16 18:03:30,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:30,492 INFO L93 Difference]: Finished difference Result 359 states and 931 transitions. [2020-01-16 18:03:30,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:30,493 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:30,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:30,493 INFO L225 Difference]: With dead ends: 359 [2020-01-16 18:03:30,494 INFO L226 Difference]: Without dead ends: 343 [2020-01-16 18:03:30,494 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:30,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-01-16 18:03:30,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 217. [2020-01-16 18:03:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-01-16 18:03:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 652 transitions. [2020-01-16 18:03:30,499 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 652 transitions. Word has length 19 [2020-01-16 18:03:30,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:30,500 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 652 transitions. [2020-01-16 18:03:30,500 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 652 transitions. [2020-01-16 18:03:30,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:30,500 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:30,500 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:30,500 INFO L426 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:30,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:30,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1302763014, now seen corresponding path program 200 times [2020-01-16 18:03:30,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:30,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842372077] [2020-01-16 18:03:30,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:30,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842372077] [2020-01-16 18:03:30,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:30,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:30,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029718368] [2020-01-16 18:03:30,686 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:30,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:30,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:30,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:30,686 INFO L87 Difference]: Start difference. First operand 217 states and 652 transitions. Second operand 8 states. [2020-01-16 18:03:30,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:30,743 INFO L93 Difference]: Finished difference Result 353 states and 916 transitions. [2020-01-16 18:03:30,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:30,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:30,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:30,744 INFO L225 Difference]: With dead ends: 353 [2020-01-16 18:03:30,744 INFO L226 Difference]: Without dead ends: 340 [2020-01-16 18:03:30,744 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:30,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-01-16 18:03:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 214. [2020-01-16 18:03:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-01-16 18:03:30,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 645 transitions. [2020-01-16 18:03:30,750 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 645 transitions. Word has length 19 [2020-01-16 18:03:30,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:30,750 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 645 transitions. [2020-01-16 18:03:30,750 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:30,750 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 645 transitions. [2020-01-16 18:03:30,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:30,751 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:30,751 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:30,751 INFO L426 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:30,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:30,751 INFO L82 PathProgramCache]: Analyzing trace with hash -467729652, now seen corresponding path program 201 times [2020-01-16 18:03:30,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:30,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676642247] [2020-01-16 18:03:30,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:30,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676642247] [2020-01-16 18:03:30,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:30,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:30,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038604082] [2020-01-16 18:03:30,951 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:30,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:30,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:30,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:30,952 INFO L87 Difference]: Start difference. First operand 214 states and 645 transitions. Second operand 8 states. [2020-01-16 18:03:31,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:31,014 INFO L93 Difference]: Finished difference Result 365 states and 945 transitions. [2020-01-16 18:03:31,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:31,014 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:31,015 INFO L225 Difference]: With dead ends: 365 [2020-01-16 18:03:31,015 INFO L226 Difference]: Without dead ends: 349 [2020-01-16 18:03:31,015 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:31,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-01-16 18:03:31,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 220. [2020-01-16 18:03:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-01-16 18:03:31,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 656 transitions. [2020-01-16 18:03:31,021 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 656 transitions. Word has length 19 [2020-01-16 18:03:31,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:31,021 INFO L478 AbstractCegarLoop]: Abstraction has 220 states and 656 transitions. [2020-01-16 18:03:31,021 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 656 transitions. [2020-01-16 18:03:31,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:31,022 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:31,022 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:31,022 INFO L426 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:31,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:31,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1443934402, now seen corresponding path program 202 times [2020-01-16 18:03:31,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:31,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434452613] [2020-01-16 18:03:31,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:31,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434452613] [2020-01-16 18:03:31,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:31,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:31,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130038978] [2020-01-16 18:03:31,219 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:31,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:31,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:31,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:31,219 INFO L87 Difference]: Start difference. First operand 220 states and 656 transitions. Second operand 8 states. [2020-01-16 18:03:31,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:31,310 INFO L93 Difference]: Finished difference Result 362 states and 934 transitions. [2020-01-16 18:03:31,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:31,311 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:31,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:31,312 INFO L225 Difference]: With dead ends: 362 [2020-01-16 18:03:31,312 INFO L226 Difference]: Without dead ends: 343 [2020-01-16 18:03:31,312 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:31,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-01-16 18:03:31,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 214. [2020-01-16 18:03:31,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-01-16 18:03:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 642 transitions. [2020-01-16 18:03:31,316 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 642 transitions. Word has length 19 [2020-01-16 18:03:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:31,316 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 642 transitions. [2020-01-16 18:03:31,316 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:31,317 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 642 transitions. [2020-01-16 18:03:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:31,317 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:31,317 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:31,317 INFO L426 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:31,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:31,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1543632934, now seen corresponding path program 203 times [2020-01-16 18:03:31,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:31,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423746098] [2020-01-16 18:03:31,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:31,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:31,507 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423746098] [2020-01-16 18:03:31,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:31,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:31,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122309244] [2020-01-16 18:03:31,508 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:31,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:31,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:31,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:31,509 INFO L87 Difference]: Start difference. First operand 214 states and 642 transitions. Second operand 8 states. [2020-01-16 18:03:31,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:31,579 INFO L93 Difference]: Finished difference Result 349 states and 906 transitions. [2020-01-16 18:03:31,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:31,579 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:31,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:31,580 INFO L225 Difference]: With dead ends: 349 [2020-01-16 18:03:31,580 INFO L226 Difference]: Without dead ends: 339 [2020-01-16 18:03:31,580 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:31,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-01-16 18:03:31,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 216. [2020-01-16 18:03:31,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-01-16 18:03:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 645 transitions. [2020-01-16 18:03:31,585 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 645 transitions. Word has length 19 [2020-01-16 18:03:31,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:31,585 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 645 transitions. [2020-01-16 18:03:31,586 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:31,586 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 645 transitions. [2020-01-16 18:03:31,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:31,586 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:31,586 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:31,586 INFO L426 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:31,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:31,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1261929366, now seen corresponding path program 204 times [2020-01-16 18:03:31,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:31,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058305452] [2020-01-16 18:03:31,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:31,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:31,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058305452] [2020-01-16 18:03:31,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:31,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:31,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224771259] [2020-01-16 18:03:31,823 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:31,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:31,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:31,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:31,824 INFO L87 Difference]: Start difference. First operand 216 states and 645 transitions. Second operand 8 states. [2020-01-16 18:03:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:31,935 INFO L93 Difference]: Finished difference Result 352 states and 911 transitions. [2020-01-16 18:03:31,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:31,935 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:31,936 INFO L225 Difference]: With dead ends: 352 [2020-01-16 18:03:31,936 INFO L226 Difference]: Without dead ends: 334 [2020-01-16 18:03:31,937 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:31,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-01-16 18:03:31,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 211. [2020-01-16 18:03:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-01-16 18:03:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 635 transitions. [2020-01-16 18:03:31,944 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 635 transitions. Word has length 19 [2020-01-16 18:03:31,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:31,945 INFO L478 AbstractCegarLoop]: Abstraction has 211 states and 635 transitions. [2020-01-16 18:03:31,945 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:31,945 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 635 transitions. [2020-01-16 18:03:31,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:31,946 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:31,946 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:31,946 INFO L426 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:31,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:31,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1236225016, now seen corresponding path program 205 times [2020-01-16 18:03:31,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:31,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001585784] [2020-01-16 18:03:31,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:32,230 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001585784] [2020-01-16 18:03:32,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:32,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:32,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187745163] [2020-01-16 18:03:32,231 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:32,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:32,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:32,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:32,232 INFO L87 Difference]: Start difference. First operand 211 states and 635 transitions. Second operand 8 states. [2020-01-16 18:03:32,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:32,288 INFO L93 Difference]: Finished difference Result 366 states and 949 transitions. [2020-01-16 18:03:32,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:32,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:32,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:32,289 INFO L225 Difference]: With dead ends: 366 [2020-01-16 18:03:32,289 INFO L226 Difference]: Without dead ends: 350 [2020-01-16 18:03:32,290 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:32,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-01-16 18:03:32,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 221. [2020-01-16 18:03:32,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-01-16 18:03:32,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 663 transitions. [2020-01-16 18:03:32,298 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 663 transitions. Word has length 19 [2020-01-16 18:03:32,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:32,298 INFO L478 AbstractCegarLoop]: Abstraction has 221 states and 663 transitions. [2020-01-16 18:03:32,298 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:32,298 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 663 transitions. [2020-01-16 18:03:32,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:32,299 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:32,299 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:32,299 INFO L426 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:32,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:32,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1987287110, now seen corresponding path program 206 times [2020-01-16 18:03:32,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:32,300 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584116682] [2020-01-16 18:03:32,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:32,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584116682] [2020-01-16 18:03:32,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:32,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:32,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616782125] [2020-01-16 18:03:32,511 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:32,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:32,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:32,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:32,511 INFO L87 Difference]: Start difference. First operand 221 states and 663 transitions. Second operand 8 states. [2020-01-16 18:03:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:32,590 INFO L93 Difference]: Finished difference Result 362 states and 937 transitions. [2020-01-16 18:03:32,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:32,591 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:32,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:32,592 INFO L225 Difference]: With dead ends: 362 [2020-01-16 18:03:32,592 INFO L226 Difference]: Without dead ends: 345 [2020-01-16 18:03:32,592 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:32,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-01-16 18:03:32,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 216. [2020-01-16 18:03:32,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-01-16 18:03:32,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 649 transitions. [2020-01-16 18:03:32,597 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 649 transitions. Word has length 19 [2020-01-16 18:03:32,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:32,597 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 649 transitions. [2020-01-16 18:03:32,597 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 649 transitions. [2020-01-16 18:03:32,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:32,597 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:32,597 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:32,598 INFO L426 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:32,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:32,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1458304426, now seen corresponding path program 207 times [2020-01-16 18:03:32,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:32,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566092735] [2020-01-16 18:03:32,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:32,815 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566092735] [2020-01-16 18:03:32,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:32,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:32,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664190075] [2020-01-16 18:03:32,816 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:32,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:32,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:32,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:32,816 INFO L87 Difference]: Start difference. First operand 216 states and 649 transitions. Second operand 8 states. [2020-01-16 18:03:32,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:32,883 INFO L93 Difference]: Finished difference Result 368 states and 949 transitions. [2020-01-16 18:03:32,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:32,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:32,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:32,884 INFO L225 Difference]: With dead ends: 368 [2020-01-16 18:03:32,885 INFO L226 Difference]: Without dead ends: 352 [2020-01-16 18:03:32,885 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:32,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-01-16 18:03:32,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 222. [2020-01-16 18:03:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-01-16 18:03:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 660 transitions. [2020-01-16 18:03:32,890 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 660 transitions. Word has length 19 [2020-01-16 18:03:32,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:32,890 INFO L478 AbstractCegarLoop]: Abstraction has 222 states and 660 transitions. [2020-01-16 18:03:32,890 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:32,890 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 660 transitions. [2020-01-16 18:03:32,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:32,890 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:32,890 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:32,891 INFO L426 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:32,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:32,891 INFO L82 PathProgramCache]: Analyzing trace with hash 482099676, now seen corresponding path program 208 times [2020-01-16 18:03:32,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:32,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052943384] [2020-01-16 18:03:32,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:33,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052943384] [2020-01-16 18:03:33,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:33,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:33,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463126198] [2020-01-16 18:03:33,090 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:33,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:33,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:33,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:33,090 INFO L87 Difference]: Start difference. First operand 222 states and 660 transitions. Second operand 8 states. [2020-01-16 18:03:33,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:33,170 INFO L93 Difference]: Finished difference Result 365 states and 938 transitions. [2020-01-16 18:03:33,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:33,170 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:33,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:33,172 INFO L225 Difference]: With dead ends: 365 [2020-01-16 18:03:33,172 INFO L226 Difference]: Without dead ends: 346 [2020-01-16 18:03:33,172 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:33,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-01-16 18:03:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 216. [2020-01-16 18:03:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-01-16 18:03:33,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 644 transitions. [2020-01-16 18:03:33,177 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 644 transitions. Word has length 19 [2020-01-16 18:03:33,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:33,177 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 644 transitions. [2020-01-16 18:03:33,178 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:33,178 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 644 transitions. [2020-01-16 18:03:33,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:33,178 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:33,178 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:33,178 INFO L426 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:33,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:33,178 INFO L82 PathProgramCache]: Analyzing trace with hash 2110104008, now seen corresponding path program 209 times [2020-01-16 18:03:33,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:33,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111379530] [2020-01-16 18:03:33,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:33,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111379530] [2020-01-16 18:03:33,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:33,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:33,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389078807] [2020-01-16 18:03:33,383 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:33,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:33,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:33,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:33,383 INFO L87 Difference]: Start difference. First operand 216 states and 644 transitions. Second operand 8 states. [2020-01-16 18:03:33,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:33,466 INFO L93 Difference]: Finished difference Result 358 states and 925 transitions. [2020-01-16 18:03:33,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:33,466 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:33,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:33,467 INFO L225 Difference]: With dead ends: 358 [2020-01-16 18:03:33,467 INFO L226 Difference]: Without dead ends: 346 [2020-01-16 18:03:33,467 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:33,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-01-16 18:03:33,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 220. [2020-01-16 18:03:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-01-16 18:03:33,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 652 transitions. [2020-01-16 18:03:33,472 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 652 transitions. Word has length 19 [2020-01-16 18:03:33,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:33,473 INFO L478 AbstractCegarLoop]: Abstraction has 220 states and 652 transitions. [2020-01-16 18:03:33,473 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:33,473 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 652 transitions. [2020-01-16 18:03:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:33,473 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:33,473 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:33,473 INFO L426 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:33,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:33,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1325988758, now seen corresponding path program 210 times [2020-01-16 18:03:33,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:33,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011414836] [2020-01-16 18:03:33,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:33,680 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011414836] [2020-01-16 18:03:33,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:33,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:33,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510933181] [2020-01-16 18:03:33,681 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:33,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:33,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:33,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:33,682 INFO L87 Difference]: Start difference. First operand 220 states and 652 transitions. Second operand 8 states. [2020-01-16 18:03:33,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:33,769 INFO L93 Difference]: Finished difference Result 359 states and 923 transitions. [2020-01-16 18:03:33,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:33,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:33,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:33,770 INFO L225 Difference]: With dead ends: 359 [2020-01-16 18:03:33,770 INFO L226 Difference]: Without dead ends: 337 [2020-01-16 18:03:33,770 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:33,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-01-16 18:03:33,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 211. [2020-01-16 18:03:33,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-01-16 18:03:33,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 632 transitions. [2020-01-16 18:03:33,775 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 632 transitions. Word has length 19 [2020-01-16 18:03:33,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:33,775 INFO L478 AbstractCegarLoop]: Abstraction has 211 states and 632 transitions. [2020-01-16 18:03:33,775 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:33,775 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 632 transitions. [2020-01-16 18:03:33,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:33,776 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:33,776 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:33,776 INFO L426 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:33,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:33,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1946024220, now seen corresponding path program 211 times [2020-01-16 18:03:33,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:33,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515739528] [2020-01-16 18:03:33,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:33,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515739528] [2020-01-16 18:03:33,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:33,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:33,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544215255] [2020-01-16 18:03:33,980 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:33,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:33,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:33,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:33,981 INFO L87 Difference]: Start difference. First operand 211 states and 632 transitions. Second operand 8 states. [2020-01-16 18:03:34,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:34,045 INFO L93 Difference]: Finished difference Result 335 states and 868 transitions. [2020-01-16 18:03:34,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:34,046 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:34,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:34,047 INFO L225 Difference]: With dead ends: 335 [2020-01-16 18:03:34,047 INFO L226 Difference]: Without dead ends: 325 [2020-01-16 18:03:34,047 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:34,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-01-16 18:03:34,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 215. [2020-01-16 18:03:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-01-16 18:03:34,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 642 transitions. [2020-01-16 18:03:34,052 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 642 transitions. Word has length 19 [2020-01-16 18:03:34,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:34,053 INFO L478 AbstractCegarLoop]: Abstraction has 215 states and 642 transitions. [2020-01-16 18:03:34,053 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:34,053 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 642 transitions. [2020-01-16 18:03:34,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:34,053 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:34,053 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:34,053 INFO L426 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:34,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:34,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1090717566, now seen corresponding path program 212 times [2020-01-16 18:03:34,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:34,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329609228] [2020-01-16 18:03:34,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:34,261 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329609228] [2020-01-16 18:03:34,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:34,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:34,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194947842] [2020-01-16 18:03:34,262 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:34,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:34,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:34,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:34,262 INFO L87 Difference]: Start difference. First operand 215 states and 642 transitions. Second operand 8 states. [2020-01-16 18:03:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:34,354 INFO L93 Difference]: Finished difference Result 337 states and 871 transitions. [2020-01-16 18:03:34,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:34,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:34,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:34,355 INFO L225 Difference]: With dead ends: 337 [2020-01-16 18:03:34,355 INFO L226 Difference]: Without dead ends: 323 [2020-01-16 18:03:34,355 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:34,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-01-16 18:03:34,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 213. [2020-01-16 18:03:34,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-01-16 18:03:34,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 637 transitions. [2020-01-16 18:03:34,361 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 637 transitions. Word has length 19 [2020-01-16 18:03:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:34,361 INFO L478 AbstractCegarLoop]: Abstraction has 213 states and 637 transitions. [2020-01-16 18:03:34,361 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 637 transitions. [2020-01-16 18:03:34,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:34,361 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:34,361 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:34,361 INFO L426 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:34,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:34,362 INFO L82 PathProgramCache]: Analyzing trace with hash -738002118, now seen corresponding path program 213 times [2020-01-16 18:03:34,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:34,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957161508] [2020-01-16 18:03:34,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:34,566 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957161508] [2020-01-16 18:03:34,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:34,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:34,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122537250] [2020-01-16 18:03:34,566 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:34,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:34,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:34,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:34,567 INFO L87 Difference]: Start difference. First operand 213 states and 637 transitions. Second operand 8 states. [2020-01-16 18:03:34,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:34,633 INFO L93 Difference]: Finished difference Result 336 states and 868 transitions. [2020-01-16 18:03:34,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:34,633 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:34,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:34,634 INFO L225 Difference]: With dead ends: 336 [2020-01-16 18:03:34,634 INFO L226 Difference]: Without dead ends: 326 [2020-01-16 18:03:34,635 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:34,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-01-16 18:03:34,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 215. [2020-01-16 18:03:34,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-01-16 18:03:34,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 640 transitions. [2020-01-16 18:03:34,639 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 640 transitions. Word has length 19 [2020-01-16 18:03:34,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:34,640 INFO L478 AbstractCegarLoop]: Abstraction has 215 states and 640 transitions. [2020-01-16 18:03:34,640 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:34,640 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 640 transitions. [2020-01-16 18:03:34,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:34,640 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:34,640 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:34,640 INFO L426 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:34,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:34,641 INFO L82 PathProgramCache]: Analyzing trace with hash 751402878, now seen corresponding path program 214 times [2020-01-16 18:03:34,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:34,641 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444924970] [2020-01-16 18:03:34,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:34,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444924970] [2020-01-16 18:03:34,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:34,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:34,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483771635] [2020-01-16 18:03:34,845 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:34,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:34,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:34,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:34,845 INFO L87 Difference]: Start difference. First operand 215 states and 640 transitions. Second operand 8 states. [2020-01-16 18:03:34,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:34,934 INFO L93 Difference]: Finished difference Result 339 states and 873 transitions. [2020-01-16 18:03:34,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:34,934 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:34,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:34,935 INFO L225 Difference]: With dead ends: 339 [2020-01-16 18:03:34,935 INFO L226 Difference]: Without dead ends: 324 [2020-01-16 18:03:34,935 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:34,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-01-16 18:03:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 213. [2020-01-16 18:03:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-01-16 18:03:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 635 transitions. [2020-01-16 18:03:34,941 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 635 transitions. Word has length 19 [2020-01-16 18:03:34,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:34,941 INFO L478 AbstractCegarLoop]: Abstraction has 213 states and 635 transitions. [2020-01-16 18:03:34,941 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:34,942 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 635 transitions. [2020-01-16 18:03:34,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:34,942 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:34,942 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:34,942 INFO L426 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:34,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:34,943 INFO L82 PathProgramCache]: Analyzing trace with hash 17632186, now seen corresponding path program 215 times [2020-01-16 18:03:34,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:34,943 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346318400] [2020-01-16 18:03:34,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:35,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346318400] [2020-01-16 18:03:35,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:35,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:35,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907526785] [2020-01-16 18:03:35,196 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:35,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:35,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:35,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:35,197 INFO L87 Difference]: Start difference. First operand 213 states and 635 transitions. Second operand 8 states. [2020-01-16 18:03:35,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:35,298 INFO L93 Difference]: Finished difference Result 338 states and 871 transitions. [2020-01-16 18:03:35,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:35,298 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:35,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:35,299 INFO L225 Difference]: With dead ends: 338 [2020-01-16 18:03:35,300 INFO L226 Difference]: Without dead ends: 326 [2020-01-16 18:03:35,300 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:35,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-01-16 18:03:35,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 217. [2020-01-16 18:03:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-01-16 18:03:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 643 transitions. [2020-01-16 18:03:35,309 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 643 transitions. Word has length 19 [2020-01-16 18:03:35,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:35,310 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 643 transitions. [2020-01-16 18:03:35,310 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:35,310 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 643 transitions. [2020-01-16 18:03:35,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:35,311 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:35,311 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:35,311 INFO L426 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:35,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:35,312 INFO L82 PathProgramCache]: Analyzing trace with hash -738002118, now seen corresponding path program 216 times [2020-01-16 18:03:35,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:35,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840121928] [2020-01-16 18:03:35,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:35,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:35,576 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840121928] [2020-01-16 18:03:35,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:35,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:35,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187357039] [2020-01-16 18:03:35,577 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:35,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:35,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:35,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:35,577 INFO L87 Difference]: Start difference. First operand 217 states and 643 transitions. Second operand 8 states. [2020-01-16 18:03:35,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:35,659 INFO L93 Difference]: Finished difference Result 339 states and 869 transitions. [2020-01-16 18:03:35,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:35,659 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:35,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:35,660 INFO L225 Difference]: With dead ends: 339 [2020-01-16 18:03:35,660 INFO L226 Difference]: Without dead ends: 317 [2020-01-16 18:03:35,660 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:35,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-01-16 18:03:35,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 208. [2020-01-16 18:03:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-01-16 18:03:35,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 625 transitions. [2020-01-16 18:03:35,666 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 625 transitions. Word has length 19 [2020-01-16 18:03:35,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:35,667 INFO L478 AbstractCegarLoop]: Abstraction has 208 states and 625 transitions. [2020-01-16 18:03:35,667 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:35,667 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 625 transitions. [2020-01-16 18:03:35,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:35,667 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:35,668 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:35,668 INFO L426 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:35,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:35,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1434799680, now seen corresponding path program 217 times [2020-01-16 18:03:35,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:35,668 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591641079] [2020-01-16 18:03:35,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:35,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591641079] [2020-01-16 18:03:35,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:35,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:35,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889418619] [2020-01-16 18:03:35,852 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:35,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:35,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:35,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:35,853 INFO L87 Difference]: Start difference. First operand 208 states and 625 transitions. Second operand 8 states. [2020-01-16 18:03:35,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:35,934 INFO L93 Difference]: Finished difference Result 338 states and 886 transitions. [2020-01-16 18:03:35,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:35,935 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:35,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:35,936 INFO L225 Difference]: With dead ends: 338 [2020-01-16 18:03:35,936 INFO L226 Difference]: Without dead ends: 324 [2020-01-16 18:03:35,936 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:35,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-01-16 18:03:35,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 214. [2020-01-16 18:03:35,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-01-16 18:03:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 644 transitions. [2020-01-16 18:03:35,941 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 644 transitions. Word has length 19 [2020-01-16 18:03:35,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:35,941 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 644 transitions. [2020-01-16 18:03:35,941 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:35,942 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 644 transitions. [2020-01-16 18:03:35,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:35,942 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:35,942 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:35,942 INFO L426 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:35,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:35,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1740037786, now seen corresponding path program 218 times [2020-01-16 18:03:35,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:35,943 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779490610] [2020-01-16 18:03:35,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:36,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:36,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779490610] [2020-01-16 18:03:36,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:36,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:36,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185111759] [2020-01-16 18:03:36,147 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:36,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:36,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:36,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:36,148 INFO L87 Difference]: Start difference. First operand 214 states and 644 transitions. Second operand 8 states. [2020-01-16 18:03:36,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:36,211 INFO L93 Difference]: Finished difference Result 334 states and 875 transitions. [2020-01-16 18:03:36,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:36,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:36,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:36,212 INFO L225 Difference]: With dead ends: 334 [2020-01-16 18:03:36,212 INFO L226 Difference]: Without dead ends: 322 [2020-01-16 18:03:36,213 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-01-16 18:03:36,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 212. [2020-01-16 18:03:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-01-16 18:03:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 639 transitions. [2020-01-16 18:03:36,218 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 639 transitions. Word has length 19 [2020-01-16 18:03:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:36,218 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 639 transitions. [2020-01-16 18:03:36,218 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 639 transitions. [2020-01-16 18:03:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:36,218 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:36,218 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:36,218 INFO L426 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:36,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:36,219 INFO L82 PathProgramCache]: Analyzing trace with hash 690097182, now seen corresponding path program 219 times [2020-01-16 18:03:36,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:36,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362441947] [2020-01-16 18:03:36,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:36,403 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362441947] [2020-01-16 18:03:36,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:36,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:36,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264686962] [2020-01-16 18:03:36,403 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:36,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:36,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:36,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:36,403 INFO L87 Difference]: Start difference. First operand 212 states and 639 transitions. Second operand 8 states. [2020-01-16 18:03:36,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:36,481 INFO L93 Difference]: Finished difference Result 342 states and 896 transitions. [2020-01-16 18:03:36,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:36,481 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:36,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:36,482 INFO L225 Difference]: With dead ends: 342 [2020-01-16 18:03:36,482 INFO L226 Difference]: Without dead ends: 328 [2020-01-16 18:03:36,482 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:36,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-01-16 18:03:36,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 216. [2020-01-16 18:03:36,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-01-16 18:03:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 647 transitions. [2020-01-16 18:03:36,487 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 647 transitions. Word has length 19 [2020-01-16 18:03:36,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:36,487 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 647 transitions. [2020-01-16 18:03:36,487 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:36,487 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 647 transitions. [2020-01-16 18:03:36,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:36,487 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:36,487 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:36,487 INFO L426 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:36,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:36,488 INFO L82 PathProgramCache]: Analyzing trace with hash -55199962, now seen corresponding path program 220 times [2020-01-16 18:03:36,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:36,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215018585] [2020-01-16 18:03:36,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:36,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215018585] [2020-01-16 18:03:36,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:36,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:36,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062732045] [2020-01-16 18:03:36,663 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:36,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:36,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:36,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:36,664 INFO L87 Difference]: Start difference. First operand 216 states and 647 transitions. Second operand 8 states. [2020-01-16 18:03:36,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:36,744 INFO L93 Difference]: Finished difference Result 340 states and 888 transitions. [2020-01-16 18:03:36,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:36,745 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:36,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:36,746 INFO L225 Difference]: With dead ends: 340 [2020-01-16 18:03:36,746 INFO L226 Difference]: Without dead ends: 324 [2020-01-16 18:03:36,747 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:36,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-01-16 18:03:36,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 212. [2020-01-16 18:03:36,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-01-16 18:03:36,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 637 transitions. [2020-01-16 18:03:36,752 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 637 transitions. Word has length 19 [2020-01-16 18:03:36,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:36,752 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 637 transitions. [2020-01-16 18:03:36,752 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:36,752 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 637 transitions. [2020-01-16 18:03:36,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:36,753 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:36,753 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:36,753 INFO L426 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:36,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:36,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2019699708, now seen corresponding path program 221 times [2020-01-16 18:03:36,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:36,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268561427] [2020-01-16 18:03:36,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:36,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:36,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268561427] [2020-01-16 18:03:36,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:36,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:36,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282765478] [2020-01-16 18:03:36,947 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:36,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:36,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:36,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:36,947 INFO L87 Difference]: Start difference. First operand 212 states and 637 transitions. Second operand 8 states. [2020-01-16 18:03:37,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:37,006 INFO L93 Difference]: Finished difference Result 332 states and 869 transitions. [2020-01-16 18:03:37,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:37,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:37,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:37,007 INFO L225 Difference]: With dead ends: 332 [2020-01-16 18:03:37,007 INFO L226 Difference]: Without dead ends: 322 [2020-01-16 18:03:37,007 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:37,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-01-16 18:03:37,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 214. [2020-01-16 18:03:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-01-16 18:03:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 640 transitions. [2020-01-16 18:03:37,012 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 640 transitions. Word has length 19 [2020-01-16 18:03:37,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:37,013 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 640 transitions. [2020-01-16 18:03:37,013 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 640 transitions. [2020-01-16 18:03:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:37,013 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:37,013 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:37,013 INFO L426 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:37,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:37,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1164393054, now seen corresponding path program 222 times [2020-01-16 18:03:37,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:37,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663820822] [2020-01-16 18:03:37,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:37,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:37,194 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663820822] [2020-01-16 18:03:37,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:37,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:37,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234357185] [2020-01-16 18:03:37,194 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:37,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:37,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:37,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:37,195 INFO L87 Difference]: Start difference. First operand 214 states and 640 transitions. Second operand 8 states. [2020-01-16 18:03:37,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:37,271 INFO L93 Difference]: Finished difference Result 334 states and 872 transitions. [2020-01-16 18:03:37,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:37,272 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:37,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:37,273 INFO L225 Difference]: With dead ends: 334 [2020-01-16 18:03:37,273 INFO L226 Difference]: Without dead ends: 318 [2020-01-16 18:03:37,273 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:37,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-01-16 18:03:37,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 210. [2020-01-16 18:03:37,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-01-16 18:03:37,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 632 transitions. [2020-01-16 18:03:37,278 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 632 transitions. Word has length 19 [2020-01-16 18:03:37,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:37,278 INFO L478 AbstractCegarLoop]: Abstraction has 210 states and 632 transitions. [2020-01-16 18:03:37,278 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:37,278 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 632 transitions. [2020-01-16 18:03:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:37,279 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:37,279 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:37,279 INFO L426 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:37,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:37,279 INFO L82 PathProgramCache]: Analyzing trace with hash -165638174, now seen corresponding path program 223 times [2020-01-16 18:03:37,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:37,279 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652665532] [2020-01-16 18:03:37,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:37,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652665532] [2020-01-16 18:03:37,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:37,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:37,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051343053] [2020-01-16 18:03:37,456 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:37,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:37,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:37,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:37,457 INFO L87 Difference]: Start difference. First operand 210 states and 632 transitions. Second operand 8 states. [2020-01-16 18:03:37,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:37,533 INFO L93 Difference]: Finished difference Result 340 states and 889 transitions. [2020-01-16 18:03:37,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:37,534 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:37,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:37,535 INFO L225 Difference]: With dead ends: 340 [2020-01-16 18:03:37,535 INFO L226 Difference]: Without dead ends: 326 [2020-01-16 18:03:37,535 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:37,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-01-16 18:03:37,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 214. [2020-01-16 18:03:37,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-01-16 18:03:37,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 642 transitions. [2020-01-16 18:03:37,540 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 642 transitions. Word has length 19 [2020-01-16 18:03:37,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:37,540 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 642 transitions. [2020-01-16 18:03:37,540 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:37,541 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 642 transitions. [2020-01-16 18:03:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:37,541 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:37,541 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:37,541 INFO L426 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:37,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:37,541 INFO L82 PathProgramCache]: Analyzing trace with hash 954491656, now seen corresponding path program 224 times [2020-01-16 18:03:37,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:37,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414281290] [2020-01-16 18:03:37,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:37,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:37,742 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414281290] [2020-01-16 18:03:37,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:37,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:37,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131810609] [2020-01-16 18:03:37,743 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:37,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:37,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:37,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:37,743 INFO L87 Difference]: Start difference. First operand 214 states and 642 transitions. Second operand 8 states. [2020-01-16 18:03:37,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:37,826 INFO L93 Difference]: Finished difference Result 336 states and 878 transitions. [2020-01-16 18:03:37,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:37,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:37,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:37,828 INFO L225 Difference]: With dead ends: 336 [2020-01-16 18:03:37,828 INFO L226 Difference]: Without dead ends: 324 [2020-01-16 18:03:37,828 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:37,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-01-16 18:03:37,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 212. [2020-01-16 18:03:37,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-01-16 18:03:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 637 transitions. [2020-01-16 18:03:37,833 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 637 transitions. Word has length 19 [2020-01-16 18:03:37,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:37,834 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 637 transitions. [2020-01-16 18:03:37,834 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:37,834 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 637 transitions. [2020-01-16 18:03:37,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:37,834 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:37,834 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:37,834 INFO L426 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:37,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:37,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1238723554, now seen corresponding path program 225 times [2020-01-16 18:03:37,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:37,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137305944] [2020-01-16 18:03:37,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:38,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137305944] [2020-01-16 18:03:38,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:38,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:38,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992906687] [2020-01-16 18:03:38,028 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:38,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:38,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:38,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:38,029 INFO L87 Difference]: Start difference. First operand 212 states and 637 transitions. Second operand 8 states. [2020-01-16 18:03:38,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:38,109 INFO L93 Difference]: Finished difference Result 346 states and 904 transitions. [2020-01-16 18:03:38,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:38,110 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:38,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:38,111 INFO L225 Difference]: With dead ends: 346 [2020-01-16 18:03:38,111 INFO L226 Difference]: Without dead ends: 332 [2020-01-16 18:03:38,111 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:38,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-01-16 18:03:38,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 217. [2020-01-16 18:03:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-01-16 18:03:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 647 transitions. [2020-01-16 18:03:38,116 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 647 transitions. Word has length 19 [2020-01-16 18:03:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:38,116 INFO L478 AbstractCegarLoop]: Abstraction has 217 states and 647 transitions. [2020-01-16 18:03:38,117 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 647 transitions. [2020-01-16 18:03:38,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:38,117 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:38,117 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:38,117 INFO L426 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:38,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:38,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1880780472, now seen corresponding path program 226 times [2020-01-16 18:03:38,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:38,118 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983277683] [2020-01-16 18:03:38,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:38,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983277683] [2020-01-16 18:03:38,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:38,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:38,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112864404] [2020-01-16 18:03:38,316 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:38,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:38,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:38,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:38,316 INFO L87 Difference]: Start difference. First operand 217 states and 647 transitions. Second operand 8 states. [2020-01-16 18:03:38,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:38,405 INFO L93 Difference]: Finished difference Result 345 states and 897 transitions. [2020-01-16 18:03:38,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:38,405 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:38,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:38,406 INFO L225 Difference]: With dead ends: 345 [2020-01-16 18:03:38,406 INFO L226 Difference]: Without dead ends: 327 [2020-01-16 18:03:38,407 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:38,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-01-16 18:03:38,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 212. [2020-01-16 18:03:38,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-01-16 18:03:38,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 635 transitions. [2020-01-16 18:03:38,412 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 635 transitions. Word has length 19 [2020-01-16 18:03:38,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:38,412 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 635 transitions. [2020-01-16 18:03:38,412 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:38,412 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 635 transitions. [2020-01-16 18:03:38,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:38,412 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:38,412 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:38,413 INFO L426 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:38,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:38,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2030202812, now seen corresponding path program 227 times [2020-01-16 18:03:38,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:38,413 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271832972] [2020-01-16 18:03:38,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:38,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:38,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271832972] [2020-01-16 18:03:38,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:38,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:38,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041500914] [2020-01-16 18:03:38,616 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:38,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:38,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:38,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:38,616 INFO L87 Difference]: Start difference. First operand 212 states and 635 transitions. Second operand 8 states. [2020-01-16 18:03:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:38,673 INFO L93 Difference]: Finished difference Result 335 states and 874 transitions. [2020-01-16 18:03:38,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:38,673 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:38,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:38,674 INFO L225 Difference]: With dead ends: 335 [2020-01-16 18:03:38,674 INFO L226 Difference]: Without dead ends: 325 [2020-01-16 18:03:38,674 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-01-16 18:03:38,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 214. [2020-01-16 18:03:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-01-16 18:03:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 638 transitions. [2020-01-16 18:03:38,679 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 638 transitions. Word has length 19 [2020-01-16 18:03:38,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:38,679 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 638 transitions. [2020-01-16 18:03:38,679 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:38,679 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 638 transitions. [2020-01-16 18:03:38,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:38,680 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:38,680 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:38,680 INFO L426 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:38,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:38,680 INFO L82 PathProgramCache]: Analyzing trace with hash -775359488, now seen corresponding path program 228 times [2020-01-16 18:03:38,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:38,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064969037] [2020-01-16 18:03:38,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:38,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064969037] [2020-01-16 18:03:38,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:38,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:38,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852532106] [2020-01-16 18:03:38,880 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:38,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:38,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:38,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:38,881 INFO L87 Difference]: Start difference. First operand 214 states and 638 transitions. Second operand 8 states. [2020-01-16 18:03:38,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:38,967 INFO L93 Difference]: Finished difference Result 338 states and 879 transitions. [2020-01-16 18:03:38,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:38,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:38,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:38,969 INFO L225 Difference]: With dead ends: 338 [2020-01-16 18:03:38,969 INFO L226 Difference]: Without dead ends: 321 [2020-01-16 18:03:38,969 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:38,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-01-16 18:03:38,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 210. [2020-01-16 18:03:38,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-01-16 18:03:38,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 630 transitions. [2020-01-16 18:03:38,975 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 630 transitions. Word has length 19 [2020-01-16 18:03:38,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:38,975 INFO L478 AbstractCegarLoop]: Abstraction has 210 states and 630 transitions. [2020-01-16 18:03:38,975 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:38,976 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 630 transitions. [2020-01-16 18:03:38,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:38,976 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:38,976 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:38,976 INFO L426 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:38,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:38,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1784188770, now seen corresponding path program 229 times [2020-01-16 18:03:38,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:38,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665583917] [2020-01-16 18:03:38,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:39,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:39,171 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665583917] [2020-01-16 18:03:39,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:39,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:39,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379501355] [2020-01-16 18:03:39,172 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:39,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:39,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:39,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:39,172 INFO L87 Difference]: Start difference. First operand 210 states and 630 transitions. Second operand 8 states. [2020-01-16 18:03:39,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:39,273 INFO L93 Difference]: Finished difference Result 348 states and 911 transitions. [2020-01-16 18:03:39,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:39,274 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:39,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:39,275 INFO L225 Difference]: With dead ends: 348 [2020-01-16 18:03:39,275 INFO L226 Difference]: Without dead ends: 334 [2020-01-16 18:03:39,275 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-01-16 18:03:39,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 218. [2020-01-16 18:03:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-01-16 18:03:39,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 654 transitions. [2020-01-16 18:03:39,280 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 654 transitions. Word has length 19 [2020-01-16 18:03:39,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:39,281 INFO L478 AbstractCegarLoop]: Abstraction has 218 states and 654 transitions. [2020-01-16 18:03:39,281 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:39,281 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 654 transitions. [2020-01-16 18:03:39,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:39,281 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:39,281 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:39,281 INFO L426 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:39,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:39,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1038891626, now seen corresponding path program 230 times [2020-01-16 18:03:39,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:39,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043978431] [2020-01-16 18:03:39,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:39,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043978431] [2020-01-16 18:03:39,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:39,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:39,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172012381] [2020-01-16 18:03:39,476 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:39,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:39,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:39,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:39,477 INFO L87 Difference]: Start difference. First operand 218 states and 654 transitions. Second operand 8 states. [2020-01-16 18:03:39,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:39,553 INFO L93 Difference]: Finished difference Result 346 states and 903 transitions. [2020-01-16 18:03:39,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:39,554 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:39,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:39,554 INFO L225 Difference]: With dead ends: 346 [2020-01-16 18:03:39,555 INFO L226 Difference]: Without dead ends: 330 [2020-01-16 18:03:39,555 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:39,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-01-16 18:03:39,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 214. [2020-01-16 18:03:39,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-01-16 18:03:39,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 642 transitions. [2020-01-16 18:03:39,560 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 642 transitions. Word has length 19 [2020-01-16 18:03:39,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:39,560 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 642 transitions. [2020-01-16 18:03:39,560 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:39,560 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 642 transitions. [2020-01-16 18:03:39,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:39,561 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:39,561 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:39,561 INFO L426 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:39,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:39,561 INFO L82 PathProgramCache]: Analyzing trace with hash -165638174, now seen corresponding path program 231 times [2020-01-16 18:03:39,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:39,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669932441] [2020-01-16 18:03:39,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:39,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669932441] [2020-01-16 18:03:39,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:39,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:39,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253125253] [2020-01-16 18:03:39,764 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:39,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:39,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:39,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:39,764 INFO L87 Difference]: Start difference. First operand 214 states and 642 transitions. Second operand 8 states. [2020-01-16 18:03:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:39,843 INFO L93 Difference]: Finished difference Result 350 states and 912 transitions. [2020-01-16 18:03:39,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:39,843 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:39,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:39,844 INFO L225 Difference]: With dead ends: 350 [2020-01-16 18:03:39,844 INFO L226 Difference]: Without dead ends: 336 [2020-01-16 18:03:39,844 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:39,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-01-16 18:03:39,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 219. [2020-01-16 18:03:39,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-01-16 18:03:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 652 transitions. [2020-01-16 18:03:39,849 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 652 transitions. Word has length 19 [2020-01-16 18:03:39,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:39,849 INFO L478 AbstractCegarLoop]: Abstraction has 219 states and 652 transitions. [2020-01-16 18:03:39,849 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:39,850 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 652 transitions. [2020-01-16 18:03:39,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:39,850 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:39,850 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:39,850 INFO L426 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:39,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:39,850 INFO L82 PathProgramCache]: Analyzing trace with hash 803245866, now seen corresponding path program 232 times [2020-01-16 18:03:39,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:39,851 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899107245] [2020-01-16 18:03:39,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:40,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899107245] [2020-01-16 18:03:40,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:40,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:40,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259319012] [2020-01-16 18:03:40,047 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:40,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:40,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:40,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:40,047 INFO L87 Difference]: Start difference. First operand 219 states and 652 transitions. Second operand 8 states. [2020-01-16 18:03:40,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:40,131 INFO L93 Difference]: Finished difference Result 349 states and 905 transitions. [2020-01-16 18:03:40,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:40,131 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:40,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:40,132 INFO L225 Difference]: With dead ends: 349 [2020-01-16 18:03:40,132 INFO L226 Difference]: Without dead ends: 331 [2020-01-16 18:03:40,132 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:40,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-01-16 18:03:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 214. [2020-01-16 18:03:40,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-01-16 18:03:40,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 638 transitions. [2020-01-16 18:03:40,137 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 638 transitions. Word has length 19 [2020-01-16 18:03:40,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:40,138 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 638 transitions. [2020-01-16 18:03:40,138 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:40,138 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 638 transitions. [2020-01-16 18:03:40,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:40,138 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:40,138 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:40,138 INFO L426 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:40,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:40,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1685003648, now seen corresponding path program 233 times [2020-01-16 18:03:40,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:40,139 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601274992] [2020-01-16 18:03:40,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:40,327 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601274992] [2020-01-16 18:03:40,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:40,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:40,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34798638] [2020-01-16 18:03:40,327 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:40,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:40,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:40,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:40,328 INFO L87 Difference]: Start difference. First operand 214 states and 638 transitions. Second operand 8 states. [2020-01-16 18:03:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:40,401 INFO L93 Difference]: Finished difference Result 345 states and 897 transitions. [2020-01-16 18:03:40,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:40,401 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:40,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:40,402 INFO L225 Difference]: With dead ends: 345 [2020-01-16 18:03:40,402 INFO L226 Difference]: Without dead ends: 333 [2020-01-16 18:03:40,403 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:40,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-01-16 18:03:40,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 218. [2020-01-16 18:03:40,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-01-16 18:03:40,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 646 transitions. [2020-01-16 18:03:40,408 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 646 transitions. Word has length 19 [2020-01-16 18:03:40,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:40,409 INFO L478 AbstractCegarLoop]: Abstraction has 218 states and 646 transitions. [2020-01-16 18:03:40,409 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:40,409 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 646 transitions. [2020-01-16 18:03:40,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:40,409 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:40,409 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:40,409 INFO L426 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:40,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:40,410 INFO L82 PathProgramCache]: Analyzing trace with hash -826129118, now seen corresponding path program 234 times [2020-01-16 18:03:40,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:40,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994145721] [2020-01-16 18:03:40,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:40,609 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994145721] [2020-01-16 18:03:40,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:40,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:40,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868160424] [2020-01-16 18:03:40,610 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:40,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:40,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:40,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:40,611 INFO L87 Difference]: Start difference. First operand 218 states and 646 transitions. Second operand 8 states. [2020-01-16 18:03:40,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:40,690 INFO L93 Difference]: Finished difference Result 346 states and 895 transitions. [2020-01-16 18:03:40,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:40,691 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:40,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:40,692 INFO L225 Difference]: With dead ends: 346 [2020-01-16 18:03:40,692 INFO L226 Difference]: Without dead ends: 325 [2020-01-16 18:03:40,692 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:40,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-01-16 18:03:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 210. [2020-01-16 18:03:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-01-16 18:03:40,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 628 transitions. [2020-01-16 18:03:40,697 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 628 transitions. Word has length 19 [2020-01-16 18:03:40,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:40,697 INFO L478 AbstractCegarLoop]: Abstraction has 210 states and 628 transitions. [2020-01-16 18:03:40,697 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:40,697 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 628 transitions. [2020-01-16 18:03:40,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:40,698 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:40,698 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:40,698 INFO L426 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:40,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:40,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1007007176, now seen corresponding path program 235 times [2020-01-16 18:03:40,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:40,698 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193341628] [2020-01-16 18:03:40,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:40,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:40,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193341628] [2020-01-16 18:03:40,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:40,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:40,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022308573] [2020-01-16 18:03:40,902 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:40,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:40,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:40,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:40,902 INFO L87 Difference]: Start difference. First operand 210 states and 628 transitions. Second operand 8 states. [2020-01-16 18:03:40,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:40,962 INFO L93 Difference]: Finished difference Result 327 states and 849 transitions. [2020-01-16 18:03:40,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:40,962 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:40,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:40,963 INFO L225 Difference]: With dead ends: 327 [2020-01-16 18:03:40,963 INFO L226 Difference]: Without dead ends: 317 [2020-01-16 18:03:40,963 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:40,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-01-16 18:03:40,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 214. [2020-01-16 18:03:40,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-01-16 18:03:40,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 638 transitions. [2020-01-16 18:03:40,968 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 638 transitions. Word has length 19 [2020-01-16 18:03:40,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:40,969 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 638 transitions. [2020-01-16 18:03:40,969 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:40,969 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 638 transitions. [2020-01-16 18:03:40,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:40,969 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:40,970 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:40,970 INFO L426 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:40,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:40,970 INFO L82 PathProgramCache]: Analyzing trace with hash 151700522, now seen corresponding path program 236 times [2020-01-16 18:03:40,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:40,970 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178640433] [2020-01-16 18:03:40,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:41,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178640433] [2020-01-16 18:03:41,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:41,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:41,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227519907] [2020-01-16 18:03:41,168 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:41,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:41,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:41,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:41,168 INFO L87 Difference]: Start difference. First operand 214 states and 638 transitions. Second operand 8 states. [2020-01-16 18:03:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:41,254 INFO L93 Difference]: Finished difference Result 329 states and 852 transitions. [2020-01-16 18:03:41,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:41,254 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:41,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:41,255 INFO L225 Difference]: With dead ends: 329 [2020-01-16 18:03:41,255 INFO L226 Difference]: Without dead ends: 315 [2020-01-16 18:03:41,255 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:41,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-01-16 18:03:41,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 212. [2020-01-16 18:03:41,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-01-16 18:03:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 633 transitions. [2020-01-16 18:03:41,260 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 633 transitions. Word has length 19 [2020-01-16 18:03:41,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:41,260 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 633 transitions. [2020-01-16 18:03:41,260 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:41,260 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 633 transitions. [2020-01-16 18:03:41,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:41,260 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:41,260 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:41,260 INFO L426 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:41,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:41,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1677019162, now seen corresponding path program 237 times [2020-01-16 18:03:41,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:41,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112770422] [2020-01-16 18:03:41,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:41,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112770422] [2020-01-16 18:03:41,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:41,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:41,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608844516] [2020-01-16 18:03:41,453 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:41,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:41,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:41,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:41,454 INFO L87 Difference]: Start difference. First operand 212 states and 633 transitions. Second operand 8 states. [2020-01-16 18:03:41,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:41,509 INFO L93 Difference]: Finished difference Result 328 states and 849 transitions. [2020-01-16 18:03:41,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:41,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:41,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:41,510 INFO L225 Difference]: With dead ends: 328 [2020-01-16 18:03:41,510 INFO L226 Difference]: Without dead ends: 318 [2020-01-16 18:03:41,510 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:41,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-01-16 18:03:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 214. [2020-01-16 18:03:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-01-16 18:03:41,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 636 transitions. [2020-01-16 18:03:41,515 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 636 transitions. Word has length 19 [2020-01-16 18:03:41,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:41,515 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 636 transitions. [2020-01-16 18:03:41,515 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:41,516 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 636 transitions. [2020-01-16 18:03:41,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:41,516 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:41,516 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:41,516 INFO L426 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:41,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:41,516 INFO L82 PathProgramCache]: Analyzing trace with hash -187614166, now seen corresponding path program 238 times [2020-01-16 18:03:41,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:41,517 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478009905] [2020-01-16 18:03:41,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:41,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478009905] [2020-01-16 18:03:41,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:41,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:41,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263388470] [2020-01-16 18:03:41,705 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:41,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:41,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:41,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:41,705 INFO L87 Difference]: Start difference. First operand 214 states and 636 transitions. Second operand 8 states. [2020-01-16 18:03:41,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:41,793 INFO L93 Difference]: Finished difference Result 331 states and 854 transitions. [2020-01-16 18:03:41,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:41,793 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:41,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:41,794 INFO L225 Difference]: With dead ends: 331 [2020-01-16 18:03:41,794 INFO L226 Difference]: Without dead ends: 316 [2020-01-16 18:03:41,794 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:41,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-01-16 18:03:41,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 212. [2020-01-16 18:03:41,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-01-16 18:03:41,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 631 transitions. [2020-01-16 18:03:41,799 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 631 transitions. Word has length 19 [2020-01-16 18:03:41,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:41,799 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 631 transitions. [2020-01-16 18:03:41,800 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:41,800 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 631 transitions. [2020-01-16 18:03:41,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:41,800 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:41,800 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:41,800 INFO L426 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:41,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:41,801 INFO L82 PathProgramCache]: Analyzing trace with hash -921384858, now seen corresponding path program 239 times [2020-01-16 18:03:41,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:41,801 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102401184] [2020-01-16 18:03:41,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:41,995 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102401184] [2020-01-16 18:03:41,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:41,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:41,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574979710] [2020-01-16 18:03:41,995 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:41,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:41,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:41,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:41,996 INFO L87 Difference]: Start difference. First operand 212 states and 631 transitions. Second operand 8 states. [2020-01-16 18:03:42,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:42,066 INFO L93 Difference]: Finished difference Result 330 states and 852 transitions. [2020-01-16 18:03:42,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:42,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:42,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:42,067 INFO L225 Difference]: With dead ends: 330 [2020-01-16 18:03:42,067 INFO L226 Difference]: Without dead ends: 318 [2020-01-16 18:03:42,067 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:42,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-01-16 18:03:42,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 216. [2020-01-16 18:03:42,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-01-16 18:03:42,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 639 transitions. [2020-01-16 18:03:42,072 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 639 transitions. Word has length 19 [2020-01-16 18:03:42,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:42,072 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 639 transitions. [2020-01-16 18:03:42,072 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:42,072 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 639 transitions. [2020-01-16 18:03:42,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:42,072 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:42,072 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:42,072 INFO L426 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:42,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:42,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1677019162, now seen corresponding path program 240 times [2020-01-16 18:03:42,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:42,073 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685790668] [2020-01-16 18:03:42,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:42,267 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685790668] [2020-01-16 18:03:42,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:42,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:42,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509892753] [2020-01-16 18:03:42,268 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:42,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:42,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:42,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:42,268 INFO L87 Difference]: Start difference. First operand 216 states and 639 transitions. Second operand 8 states. [2020-01-16 18:03:42,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:42,348 INFO L93 Difference]: Finished difference Result 331 states and 850 transitions. [2020-01-16 18:03:42,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:42,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:42,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:42,350 INFO L225 Difference]: With dead ends: 331 [2020-01-16 18:03:42,350 INFO L226 Difference]: Without dead ends: 304 [2020-01-16 18:03:42,350 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:42,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-01-16 18:03:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 202. [2020-01-16 18:03:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-01-16 18:03:42,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 613 transitions. [2020-01-16 18:03:42,355 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 613 transitions. Word has length 19 [2020-01-16 18:03:42,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:42,355 INFO L478 AbstractCegarLoop]: Abstraction has 202 states and 613 transitions. [2020-01-16 18:03:42,355 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:42,356 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 613 transitions. [2020-01-16 18:03:42,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:42,356 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:42,356 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:42,356 INFO L426 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:42,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:42,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1614896374, now seen corresponding path program 241 times [2020-01-16 18:03:42,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:42,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326552885] [2020-01-16 18:03:42,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:42,565 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326552885] [2020-01-16 18:03:42,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:42,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:42,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355822810] [2020-01-16 18:03:42,566 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:42,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:42,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:42,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:42,566 INFO L87 Difference]: Start difference. First operand 202 states and 613 transitions. Second operand 8 states. [2020-01-16 18:03:42,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:42,625 INFO L93 Difference]: Finished difference Result 378 states and 975 transitions. [2020-01-16 18:03:42,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:42,626 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:42,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:42,627 INFO L225 Difference]: With dead ends: 378 [2020-01-16 18:03:42,627 INFO L226 Difference]: Without dead ends: 362 [2020-01-16 18:03:42,627 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:42,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-01-16 18:03:42,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 218. [2020-01-16 18:03:42,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-01-16 18:03:42,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 653 transitions. [2020-01-16 18:03:42,631 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 653 transitions. Word has length 19 [2020-01-16 18:03:42,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:42,632 INFO L478 AbstractCegarLoop]: Abstraction has 218 states and 653 transitions. [2020-01-16 18:03:42,632 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:42,632 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 653 transitions. [2020-01-16 18:03:42,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:42,632 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:42,632 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:42,632 INFO L426 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:42,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:42,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1989547560, now seen corresponding path program 242 times [2020-01-16 18:03:42,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:42,633 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540822593] [2020-01-16 18:03:42,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:42,866 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540822593] [2020-01-16 18:03:42,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:42,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:42,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140947525] [2020-01-16 18:03:42,867 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:42,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:42,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:42,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:42,867 INFO L87 Difference]: Start difference. First operand 218 states and 653 transitions. Second operand 8 states. [2020-01-16 18:03:42,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:42,948 INFO L93 Difference]: Finished difference Result 376 states and 965 transitions. [2020-01-16 18:03:42,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:42,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:42,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:42,950 INFO L225 Difference]: With dead ends: 376 [2020-01-16 18:03:42,950 INFO L226 Difference]: Without dead ends: 354 [2020-01-16 18:03:42,950 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-01-16 18:03:42,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 210. [2020-01-16 18:03:42,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-01-16 18:03:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 632 transitions. [2020-01-16 18:03:42,955 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 632 transitions. Word has length 19 [2020-01-16 18:03:42,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:42,955 INFO L478 AbstractCegarLoop]: Abstraction has 210 states and 632 transitions. [2020-01-16 18:03:42,955 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 632 transitions. [2020-01-16 18:03:42,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:42,955 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:42,955 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:42,956 INFO L426 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:42,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:42,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1498681168, now seen corresponding path program 243 times [2020-01-16 18:03:42,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:42,956 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13352681] [2020-01-16 18:03:42,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:43,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:43,168 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13352681] [2020-01-16 18:03:43,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:43,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:43,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45144688] [2020-01-16 18:03:43,169 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:43,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:43,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:43,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:43,169 INFO L87 Difference]: Start difference. First operand 210 states and 632 transitions. Second operand 8 states. [2020-01-16 18:03:43,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:43,240 INFO L93 Difference]: Finished difference Result 375 states and 962 transitions. [2020-01-16 18:03:43,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:43,240 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:43,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:43,241 INFO L225 Difference]: With dead ends: 375 [2020-01-16 18:03:43,241 INFO L226 Difference]: Without dead ends: 359 [2020-01-16 18:03:43,242 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:43,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-01-16 18:03:43,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 216. [2020-01-16 18:03:43,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-01-16 18:03:43,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 643 transitions. [2020-01-16 18:03:43,246 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 643 transitions. Word has length 19 [2020-01-16 18:03:43,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:43,246 INFO L478 AbstractCegarLoop]: Abstraction has 216 states and 643 transitions. [2020-01-16 18:03:43,246 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:43,246 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 643 transitions. [2020-01-16 18:03:43,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:43,247 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:43,247 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:43,247 INFO L426 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:43,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:43,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1820081378, now seen corresponding path program 244 times [2020-01-16 18:03:43,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:43,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133234077] [2020-01-16 18:03:43,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:43,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:43,442 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133234077] [2020-01-16 18:03:43,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:43,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:43,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401810735] [2020-01-16 18:03:43,443 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:43,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:43,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:43,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:43,444 INFO L87 Difference]: Start difference. First operand 216 states and 643 transitions. Second operand 8 states. [2020-01-16 18:03:43,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:43,522 INFO L93 Difference]: Finished difference Result 372 states and 951 transitions. [2020-01-16 18:03:43,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:43,523 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:43,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:43,523 INFO L225 Difference]: With dead ends: 372 [2020-01-16 18:03:43,524 INFO L226 Difference]: Without dead ends: 353 [2020-01-16 18:03:43,524 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:43,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-01-16 18:03:43,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 210. [2020-01-16 18:03:43,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-01-16 18:03:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 626 transitions. [2020-01-16 18:03:43,529 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 626 transitions. Word has length 19 [2020-01-16 18:03:43,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:43,529 INFO L478 AbstractCegarLoop]: Abstraction has 210 states and 626 transitions. [2020-01-16 18:03:43,529 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:43,529 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 626 transitions. [2020-01-16 18:03:43,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:43,529 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:43,529 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:43,529 INFO L426 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:43,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:43,530 INFO L82 PathProgramCache]: Analyzing trace with hash -308913628, now seen corresponding path program 245 times [2020-01-16 18:03:43,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:43,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666838703] [2020-01-16 18:03:43,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:43,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:43,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666838703] [2020-01-16 18:03:43,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:43,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:43,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473311212] [2020-01-16 18:03:43,726 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:43,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:43,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:43,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:43,726 INFO L87 Difference]: Start difference. First operand 210 states and 626 transitions. Second operand 8 states. [2020-01-16 18:03:43,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:43,801 INFO L93 Difference]: Finished difference Result 370 states and 948 transitions. [2020-01-16 18:03:43,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:43,802 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:43,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:43,803 INFO L225 Difference]: With dead ends: 370 [2020-01-16 18:03:43,803 INFO L226 Difference]: Without dead ends: 356 [2020-01-16 18:03:43,803 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:43,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-01-16 18:03:43,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 215. [2020-01-16 18:03:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-01-16 18:03:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 636 transitions. [2020-01-16 18:03:43,808 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 636 transitions. Word has length 19 [2020-01-16 18:03:43,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:43,808 INFO L478 AbstractCegarLoop]: Abstraction has 215 states and 636 transitions. [2020-01-16 18:03:43,808 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:43,808 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 636 transitions. [2020-01-16 18:03:43,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:43,809 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:43,809 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:43,809 INFO L426 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:43,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:43,809 INFO L82 PathProgramCache]: Analyzing trace with hash 549366256, now seen corresponding path program 246 times [2020-01-16 18:03:43,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:43,810 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369709943] [2020-01-16 18:03:43,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:44,003 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369709943] [2020-01-16 18:03:44,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:44,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:44,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228641756] [2020-01-16 18:03:44,004 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:44,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:44,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:44,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:44,004 INFO L87 Difference]: Start difference. First operand 215 states and 636 transitions. Second operand 8 states. [2020-01-16 18:03:44,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:44,082 INFO L93 Difference]: Finished difference Result 369 states and 941 transitions. [2020-01-16 18:03:44,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:44,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:44,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:44,084 INFO L225 Difference]: With dead ends: 369 [2020-01-16 18:03:44,084 INFO L226 Difference]: Without dead ends: 343 [2020-01-16 18:03:44,084 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:44,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-01-16 18:03:44,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 202. [2020-01-16 18:03:44,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-01-16 18:03:44,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 608 transitions. [2020-01-16 18:03:44,089 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 608 transitions. Word has length 19 [2020-01-16 18:03:44,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:44,089 INFO L478 AbstractCegarLoop]: Abstraction has 202 states and 608 transitions. [2020-01-16 18:03:44,089 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:44,089 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 608 transitions. [2020-01-16 18:03:44,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:44,090 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:44,090 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:44,090 INFO L426 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:44,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:44,090 INFO L82 PathProgramCache]: Analyzing trace with hash -667701144, now seen corresponding path program 247 times [2020-01-16 18:03:44,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:44,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682668065] [2020-01-16 18:03:44,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:44,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682668065] [2020-01-16 18:03:44,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:44,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:44,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783749587] [2020-01-16 18:03:44,292 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:44,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:44,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:44,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:44,292 INFO L87 Difference]: Start difference. First operand 202 states and 608 transitions. Second operand 8 states. [2020-01-16 18:03:44,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:44,354 INFO L93 Difference]: Finished difference Result 365 states and 929 transitions. [2020-01-16 18:03:44,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:44,355 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:44,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:44,356 INFO L225 Difference]: With dead ends: 365 [2020-01-16 18:03:44,356 INFO L226 Difference]: Without dead ends: 349 [2020-01-16 18:03:44,356 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:44,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-01-16 18:03:44,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 214. [2020-01-16 18:03:44,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-01-16 18:03:44,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 634 transitions. [2020-01-16 18:03:44,361 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 634 transitions. Word has length 19 [2020-01-16 18:03:44,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:44,361 INFO L478 AbstractCegarLoop]: Abstraction has 214 states and 634 transitions. [2020-01-16 18:03:44,361 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:44,361 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 634 transitions. [2020-01-16 18:03:44,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:44,362 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:44,362 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:44,362 INFO L426 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:44,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:44,362 INFO L82 PathProgramCache]: Analyzing trace with hash -293049958, now seen corresponding path program 248 times [2020-01-16 18:03:44,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:44,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852908353] [2020-01-16 18:03:44,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:44,556 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852908353] [2020-01-16 18:03:44,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:44,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:44,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293778281] [2020-01-16 18:03:44,557 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:44,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:44,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:44,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:44,557 INFO L87 Difference]: Start difference. First operand 214 states and 634 transitions. Second operand 8 states. [2020-01-16 18:03:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:44,637 INFO L93 Difference]: Finished difference Result 363 states and 919 transitions. [2020-01-16 18:03:44,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:44,637 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:44,638 INFO L225 Difference]: With dead ends: 363 [2020-01-16 18:03:44,638 INFO L226 Difference]: Without dead ends: 341 [2020-01-16 18:03:44,638 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:44,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-01-16 18:03:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 206. [2020-01-16 18:03:44,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-01-16 18:03:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 616 transitions. [2020-01-16 18:03:44,643 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 616 transitions. Word has length 19 [2020-01-16 18:03:44,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:44,643 INFO L478 AbstractCegarLoop]: Abstraction has 206 states and 616 transitions. [2020-01-16 18:03:44,643 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:44,643 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 616 transitions. [2020-01-16 18:03:44,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:44,643 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:44,644 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:44,644 INFO L426 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:44,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:44,644 INFO L82 PathProgramCache]: Analyzing trace with hash -463100062, now seen corresponding path program 249 times [2020-01-16 18:03:44,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:44,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477039527] [2020-01-16 18:03:44,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:44,836 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477039527] [2020-01-16 18:03:44,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:44,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:44,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600969319] [2020-01-16 18:03:44,836 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:44,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:44,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:44,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:44,837 INFO L87 Difference]: Start difference. First operand 206 states and 616 transitions. Second operand 8 states. [2020-01-16 18:03:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:44,897 INFO L93 Difference]: Finished difference Result 356 states and 902 transitions. [2020-01-16 18:03:44,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:44,898 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:44,899 INFO L225 Difference]: With dead ends: 356 [2020-01-16 18:03:44,899 INFO L226 Difference]: Without dead ends: 340 [2020-01-16 18:03:44,899 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:44,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-01-16 18:03:44,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 209. [2020-01-16 18:03:44,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-01-16 18:03:44,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 620 transitions. [2020-01-16 18:03:44,904 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 620 transitions. Word has length 19 [2020-01-16 18:03:44,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:44,904 INFO L478 AbstractCegarLoop]: Abstraction has 209 states and 620 transitions. [2020-01-16 18:03:44,904 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:44,904 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 620 transitions. [2020-01-16 18:03:44,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:44,905 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:44,905 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:44,905 INFO L426 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:44,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:44,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1680140688, now seen corresponding path program 250 times [2020-01-16 18:03:44,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:44,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418702282] [2020-01-16 18:03:44,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:45,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418702282] [2020-01-16 18:03:45,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:45,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:45,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176413124] [2020-01-16 18:03:45,108 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:45,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:45,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:45,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:45,109 INFO L87 Difference]: Start difference. First operand 209 states and 620 transitions. Second operand 8 states. [2020-01-16 18:03:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:45,185 INFO L93 Difference]: Finished difference Result 350 states and 887 transitions. [2020-01-16 18:03:45,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:45,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:45,186 INFO L225 Difference]: With dead ends: 350 [2020-01-16 18:03:45,187 INFO L226 Difference]: Without dead ends: 337 [2020-01-16 18:03:45,187 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-01-16 18:03:45,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 206. [2020-01-16 18:03:45,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-01-16 18:03:45,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 613 transitions. [2020-01-16 18:03:45,192 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 613 transitions. Word has length 19 [2020-01-16 18:03:45,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:45,192 INFO L478 AbstractCegarLoop]: Abstraction has 206 states and 613 transitions. [2020-01-16 18:03:45,192 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:45,192 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 613 transitions. [2020-01-16 18:03:45,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:45,192 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:45,193 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:45,193 INFO L426 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:45,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:45,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1861116096, now seen corresponding path program 251 times [2020-01-16 18:03:45,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:45,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138404165] [2020-01-16 18:03:45,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:45,376 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138404165] [2020-01-16 18:03:45,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:45,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:45,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380475669] [2020-01-16 18:03:45,376 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:45,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:45,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:45,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:45,377 INFO L87 Difference]: Start difference. First operand 206 states and 613 transitions. Second operand 8 states. [2020-01-16 18:03:45,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:45,450 INFO L93 Difference]: Finished difference Result 351 states and 891 transitions. [2020-01-16 18:03:45,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:45,451 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:45,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:45,452 INFO L225 Difference]: With dead ends: 351 [2020-01-16 18:03:45,452 INFO L226 Difference]: Without dead ends: 337 [2020-01-16 18:03:45,452 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:45,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-01-16 18:03:45,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 208. [2020-01-16 18:03:45,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-01-16 18:03:45,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 616 transitions. [2020-01-16 18:03:45,457 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 616 transitions. Word has length 19 [2020-01-16 18:03:45,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:45,457 INFO L478 AbstractCegarLoop]: Abstraction has 208 states and 616 transitions. [2020-01-16 18:03:45,457 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:45,457 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 616 transitions. [2020-01-16 18:03:45,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:45,458 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:45,458 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:45,458 INFO L426 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:45,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:45,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1559515874, now seen corresponding path program 252 times [2020-01-16 18:03:45,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:45,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356598058] [2020-01-16 18:03:45,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:45,654 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356598058] [2020-01-16 18:03:45,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:45,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:45,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209670428] [2020-01-16 18:03:45,655 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:45,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:45,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:45,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:45,655 INFO L87 Difference]: Start difference. First operand 208 states and 616 transitions. Second operand 8 states. [2020-01-16 18:03:45,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:45,741 INFO L93 Difference]: Finished difference Result 347 states and 880 transitions. [2020-01-16 18:03:45,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:45,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:45,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:45,744 INFO L225 Difference]: With dead ends: 347 [2020-01-16 18:03:45,744 INFO L226 Difference]: Without dead ends: 331 [2020-01-16 18:03:45,744 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:45,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-01-16 18:03:45,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 202. [2020-01-16 18:03:45,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-01-16 18:03:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 604 transitions. [2020-01-16 18:03:45,749 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 604 transitions. Word has length 19 [2020-01-16 18:03:45,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:45,750 INFO L478 AbstractCegarLoop]: Abstraction has 202 states and 604 transitions. [2020-01-16 18:03:45,750 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:45,750 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 604 transitions. [2020-01-16 18:03:45,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:45,750 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:45,751 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:45,751 INFO L426 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:45,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:45,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1800243944, now seen corresponding path program 253 times [2020-01-16 18:03:45,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:45,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395172218] [2020-01-16 18:03:45,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:45,963 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395172218] [2020-01-16 18:03:45,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:45,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:45,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459941314] [2020-01-16 18:03:45,964 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:45,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:45,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:45,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:45,965 INFO L87 Difference]: Start difference. First operand 202 states and 604 transitions. Second operand 8 states. [2020-01-16 18:03:46,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:46,023 INFO L93 Difference]: Finished difference Result 352 states and 894 transitions. [2020-01-16 18:03:46,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:46,024 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:46,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:46,025 INFO L225 Difference]: With dead ends: 352 [2020-01-16 18:03:46,025 INFO L226 Difference]: Without dead ends: 336 [2020-01-16 18:03:46,025 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-01-16 18:03:46,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 208. [2020-01-16 18:03:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-01-16 18:03:46,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 618 transitions. [2020-01-16 18:03:46,030 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 618 transitions. Word has length 19 [2020-01-16 18:03:46,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:46,031 INFO L478 AbstractCegarLoop]: Abstraction has 208 states and 618 transitions. [2020-01-16 18:03:46,031 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:46,031 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 618 transitions. [2020-01-16 18:03:46,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:46,031 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:46,031 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:46,032 INFO L426 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:46,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:46,032 INFO L82 PathProgramCache]: Analyzing trace with hash -351482602, now seen corresponding path program 254 times [2020-01-16 18:03:46,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:46,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789000697] [2020-01-16 18:03:46,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:46,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789000697] [2020-01-16 18:03:46,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:46,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:46,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287467507] [2020-01-16 18:03:46,205 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:46,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:46,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:46,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:46,206 INFO L87 Difference]: Start difference. First operand 208 states and 618 transitions. Second operand 8 states. [2020-01-16 18:03:46,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:46,294 INFO L93 Difference]: Finished difference Result 346 states and 879 transitions. [2020-01-16 18:03:46,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:46,295 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:46,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:46,295 INFO L225 Difference]: With dead ends: 346 [2020-01-16 18:03:46,296 INFO L226 Difference]: Without dead ends: 333 [2020-01-16 18:03:46,296 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:46,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-01-16 18:03:46,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 205. [2020-01-16 18:03:46,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-01-16 18:03:46,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 611 transitions. [2020-01-16 18:03:46,301 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 611 transitions. Word has length 19 [2020-01-16 18:03:46,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:46,301 INFO L478 AbstractCegarLoop]: Abstraction has 205 states and 611 transitions. [2020-01-16 18:03:46,301 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:46,301 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 611 transitions. [2020-01-16 18:03:46,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:46,302 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:46,302 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:46,302 INFO L426 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:46,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:46,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1293897678, now seen corresponding path program 255 times [2020-01-16 18:03:46,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:46,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934277039] [2020-01-16 18:03:46,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:46,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:46,482 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934277039] [2020-01-16 18:03:46,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:46,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:46,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952312331] [2020-01-16 18:03:46,483 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:46,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:46,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:46,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:46,484 INFO L87 Difference]: Start difference. First operand 205 states and 611 transitions. Second operand 8 states. [2020-01-16 18:03:46,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:46,541 INFO L93 Difference]: Finished difference Result 358 states and 908 transitions. [2020-01-16 18:03:46,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:46,541 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:46,542 INFO L225 Difference]: With dead ends: 358 [2020-01-16 18:03:46,542 INFO L226 Difference]: Without dead ends: 342 [2020-01-16 18:03:46,542 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:46,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-01-16 18:03:46,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 211. [2020-01-16 18:03:46,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-01-16 18:03:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 622 transitions. [2020-01-16 18:03:46,547 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 622 transitions. Word has length 19 [2020-01-16 18:03:46,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:46,548 INFO L478 AbstractCegarLoop]: Abstraction has 211 states and 622 transitions. [2020-01-16 18:03:46,548 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:46,548 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 622 transitions. [2020-01-16 18:03:46,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:46,548 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:46,548 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:46,548 INFO L426 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:46,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:46,548 INFO L82 PathProgramCache]: Analyzing trace with hash 317692928, now seen corresponding path program 256 times [2020-01-16 18:03:46,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:46,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119452462] [2020-01-16 18:03:46,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:46,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119452462] [2020-01-16 18:03:46,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:46,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:46,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497080687] [2020-01-16 18:03:46,731 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:46,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:46,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:46,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:46,732 INFO L87 Difference]: Start difference. First operand 211 states and 622 transitions. Second operand 8 states. [2020-01-16 18:03:46,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:46,815 INFO L93 Difference]: Finished difference Result 355 states and 897 transitions. [2020-01-16 18:03:46,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:46,815 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:46,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:46,816 INFO L225 Difference]: With dead ends: 355 [2020-01-16 18:03:46,816 INFO L226 Difference]: Without dead ends: 336 [2020-01-16 18:03:46,817 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:46,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-01-16 18:03:46,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 205. [2020-01-16 18:03:46,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-01-16 18:03:46,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 608 transitions. [2020-01-16 18:03:46,822 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 608 transitions. Word has length 19 [2020-01-16 18:03:46,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:46,822 INFO L478 AbstractCegarLoop]: Abstraction has 205 states and 608 transitions. [2020-01-16 18:03:46,822 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:46,822 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 608 transitions. [2020-01-16 18:03:46,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:46,823 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:46,823 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:46,823 INFO L426 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:46,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:46,823 INFO L82 PathProgramCache]: Analyzing trace with hash -235841100, now seen corresponding path program 257 times [2020-01-16 18:03:46,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:46,823 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977525968] [2020-01-16 18:03:46,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:46,995 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977525968] [2020-01-16 18:03:46,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:46,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:46,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325672935] [2020-01-16 18:03:46,996 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:46,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:46,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:46,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:46,996 INFO L87 Difference]: Start difference. First operand 205 states and 608 transitions. Second operand 8 states. [2020-01-16 18:03:47,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:47,082 INFO L93 Difference]: Finished difference Result 342 states and 869 transitions. [2020-01-16 18:03:47,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:47,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:47,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:47,083 INFO L225 Difference]: With dead ends: 342 [2020-01-16 18:03:47,083 INFO L226 Difference]: Without dead ends: 332 [2020-01-16 18:03:47,083 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:47,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-01-16 18:03:47,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 207. [2020-01-16 18:03:47,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-01-16 18:03:47,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 611 transitions. [2020-01-16 18:03:47,088 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 611 transitions. Word has length 19 [2020-01-16 18:03:47,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:47,088 INFO L478 AbstractCegarLoop]: Abstraction has 207 states and 611 transitions. [2020-01-16 18:03:47,088 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:47,089 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 611 transitions. [2020-01-16 18:03:47,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:47,089 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:47,089 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:47,089 INFO L426 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:47,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:47,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1964888434, now seen corresponding path program 258 times [2020-01-16 18:03:47,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:47,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074076346] [2020-01-16 18:03:47,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:47,261 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074076346] [2020-01-16 18:03:47,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:47,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:47,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322347890] [2020-01-16 18:03:47,262 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:47,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:47,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:47,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:47,262 INFO L87 Difference]: Start difference. First operand 207 states and 611 transitions. Second operand 8 states. [2020-01-16 18:03:47,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:47,341 INFO L93 Difference]: Finished difference Result 345 states and 874 transitions. [2020-01-16 18:03:47,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:47,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:47,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:47,342 INFO L225 Difference]: With dead ends: 345 [2020-01-16 18:03:47,342 INFO L226 Difference]: Without dead ends: 327 [2020-01-16 18:03:47,342 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:47,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-01-16 18:03:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 202. [2020-01-16 18:03:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-01-16 18:03:47,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 601 transitions. [2020-01-16 18:03:47,347 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 601 transitions. Word has length 19 [2020-01-16 18:03:47,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:47,348 INFO L478 AbstractCegarLoop]: Abstraction has 202 states and 601 transitions. [2020-01-16 18:03:47,348 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 601 transitions. [2020-01-16 18:03:47,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:47,348 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:47,348 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:47,349 INFO L426 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:47,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:47,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1020844596, now seen corresponding path program 259 times [2020-01-16 18:03:47,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:47,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136564514] [2020-01-16 18:03:47,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:47,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136564514] [2020-01-16 18:03:47,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:47,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:47,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699723833] [2020-01-16 18:03:47,522 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:47,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:47,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:47,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:47,523 INFO L87 Difference]: Start difference. First operand 202 states and 601 transitions. Second operand 8 states. [2020-01-16 18:03:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:47,602 INFO L93 Difference]: Finished difference Result 342 states and 873 transitions. [2020-01-16 18:03:47,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:47,603 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:47,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:47,604 INFO L225 Difference]: With dead ends: 342 [2020-01-16 18:03:47,604 INFO L226 Difference]: Without dead ends: 328 [2020-01-16 18:03:47,604 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:47,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-01-16 18:03:47,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 206. [2020-01-16 18:03:47,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-01-16 18:03:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 611 transitions. [2020-01-16 18:03:47,609 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 611 transitions. Word has length 19 [2020-01-16 18:03:47,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:47,609 INFO L478 AbstractCegarLoop]: Abstraction has 206 states and 611 transitions. [2020-01-16 18:03:47,609 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:47,609 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 611 transitions. [2020-01-16 18:03:47,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:47,610 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:47,610 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:47,610 INFO L426 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:47,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:47,610 INFO L82 PathProgramCache]: Analyzing trace with hash 146509270, now seen corresponding path program 260 times [2020-01-16 18:03:47,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:47,610 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919798521] [2020-01-16 18:03:47,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:47,779 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919798521] [2020-01-16 18:03:47,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:47,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:47,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847668431] [2020-01-16 18:03:47,780 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:47,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:47,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:47,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:47,780 INFO L87 Difference]: Start difference. First operand 206 states and 611 transitions. Second operand 8 states. [2020-01-16 18:03:47,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:47,858 INFO L93 Difference]: Finished difference Result 338 states and 862 transitions. [2020-01-16 18:03:47,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:47,858 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:47,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:47,859 INFO L225 Difference]: With dead ends: 338 [2020-01-16 18:03:47,859 INFO L226 Difference]: Without dead ends: 326 [2020-01-16 18:03:47,859 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:47,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-01-16 18:03:47,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 204. [2020-01-16 18:03:47,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-01-16 18:03:47,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 606 transitions. [2020-01-16 18:03:47,864 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 606 transitions. Word has length 19 [2020-01-16 18:03:47,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:47,864 INFO L478 AbstractCegarLoop]: Abstraction has 204 states and 606 transitions. [2020-01-16 18:03:47,865 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:47,865 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 606 transitions. [2020-01-16 18:03:47,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:47,865 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:47,865 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:47,865 INFO L426 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:47,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:47,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1040015206, now seen corresponding path program 261 times [2020-01-16 18:03:47,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:47,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594211564] [2020-01-16 18:03:47,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:48,043 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594211564] [2020-01-16 18:03:48,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:48,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:48,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412007246] [2020-01-16 18:03:48,044 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:48,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:48,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:48,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:48,045 INFO L87 Difference]: Start difference. First operand 204 states and 606 transitions. Second operand 8 states. [2020-01-16 18:03:48,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:48,120 INFO L93 Difference]: Finished difference Result 348 states and 888 transitions. [2020-01-16 18:03:48,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:48,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:48,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:48,121 INFO L225 Difference]: With dead ends: 348 [2020-01-16 18:03:48,121 INFO L226 Difference]: Without dead ends: 334 [2020-01-16 18:03:48,121 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:48,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-01-16 18:03:48,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 209. [2020-01-16 18:03:48,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-01-16 18:03:48,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 616 transitions. [2020-01-16 18:03:48,126 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 616 transitions. Word has length 19 [2020-01-16 18:03:48,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:48,126 INFO L478 AbstractCegarLoop]: Abstraction has 209 states and 616 transitions. [2020-01-16 18:03:48,126 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:48,126 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 616 transitions. [2020-01-16 18:03:48,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:48,126 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:48,126 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:48,126 INFO L426 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:48,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:48,127 INFO L82 PathProgramCache]: Analyzing trace with hash -71131166, now seen corresponding path program 262 times [2020-01-16 18:03:48,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:48,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663927504] [2020-01-16 18:03:48,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:48,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663927504] [2020-01-16 18:03:48,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:48,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:48,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841696918] [2020-01-16 18:03:48,311 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:48,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:48,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:48,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:48,312 INFO L87 Difference]: Start difference. First operand 209 states and 616 transitions. Second operand 8 states. [2020-01-16 18:03:48,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:48,397 INFO L93 Difference]: Finished difference Result 347 states and 881 transitions. [2020-01-16 18:03:48,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:48,398 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:48,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:48,399 INFO L225 Difference]: With dead ends: 347 [2020-01-16 18:03:48,399 INFO L226 Difference]: Without dead ends: 329 [2020-01-16 18:03:48,399 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:48,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-01-16 18:03:48,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 204. [2020-01-16 18:03:48,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-01-16 18:03:48,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 604 transitions. [2020-01-16 18:03:48,405 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 604 transitions. Word has length 19 [2020-01-16 18:03:48,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:48,405 INFO L478 AbstractCegarLoop]: Abstraction has 204 states and 604 transitions. [2020-01-16 18:03:48,406 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:48,406 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 604 transitions. [2020-01-16 18:03:48,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:48,406 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:48,406 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:48,407 INFO L426 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:48,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:48,407 INFO L82 PathProgramCache]: Analyzing trace with hash 319756962, now seen corresponding path program 263 times [2020-01-16 18:03:48,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:48,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576085575] [2020-01-16 18:03:48,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:48,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576085575] [2020-01-16 18:03:48,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:48,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:48,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431150961] [2020-01-16 18:03:48,620 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:48,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:48,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:48,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:48,621 INFO L87 Difference]: Start difference. First operand 204 states and 604 transitions. Second operand 8 states. [2020-01-16 18:03:48,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:48,692 INFO L93 Difference]: Finished difference Result 337 states and 858 transitions. [2020-01-16 18:03:48,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:48,693 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:48,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:48,694 INFO L225 Difference]: With dead ends: 337 [2020-01-16 18:03:48,694 INFO L226 Difference]: Without dead ends: 327 [2020-01-16 18:03:48,694 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:48,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-01-16 18:03:48,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 206. [2020-01-16 18:03:48,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-01-16 18:03:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 607 transitions. [2020-01-16 18:03:48,699 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 607 transitions. Word has length 19 [2020-01-16 18:03:48,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:48,699 INFO L478 AbstractCegarLoop]: Abstraction has 206 states and 607 transitions. [2020-01-16 18:03:48,699 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 607 transitions. [2020-01-16 18:03:48,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:48,700 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:48,700 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:48,700 INFO L426 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:48,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:48,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1409290372, now seen corresponding path program 264 times [2020-01-16 18:03:48,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:48,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804652015] [2020-01-16 18:03:48,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:48,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:48,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804652015] [2020-01-16 18:03:48,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:48,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:48,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17693902] [2020-01-16 18:03:48,887 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:48,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:48,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:48,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:48,888 INFO L87 Difference]: Start difference. First operand 206 states and 607 transitions. Second operand 8 states. [2020-01-16 18:03:48,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:48,968 INFO L93 Difference]: Finished difference Result 340 states and 863 transitions. [2020-01-16 18:03:48,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:48,969 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:48,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:48,970 INFO L225 Difference]: With dead ends: 340 [2020-01-16 18:03:48,970 INFO L226 Difference]: Without dead ends: 318 [2020-01-16 18:03:48,970 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-01-16 18:03:48,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 197. [2020-01-16 18:03:48,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-01-16 18:03:48,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 591 transitions. [2020-01-16 18:03:48,974 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 591 transitions. Word has length 19 [2020-01-16 18:03:48,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:48,974 INFO L478 AbstractCegarLoop]: Abstraction has 197 states and 591 transitions. [2020-01-16 18:03:48,975 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:48,975 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 591 transitions. [2020-01-16 18:03:48,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:48,975 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:48,975 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:48,975 INFO L426 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:48,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:48,975 INFO L82 PathProgramCache]: Analyzing trace with hash -666960488, now seen corresponding path program 265 times [2020-01-16 18:03:48,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:48,976 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731740179] [2020-01-16 18:03:48,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:49,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:49,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731740179] [2020-01-16 18:03:49,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:49,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:49,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847975532] [2020-01-16 18:03:49,194 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:49,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:49,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:49,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:49,194 INFO L87 Difference]: Start difference. First operand 197 states and 591 transitions. Second operand 8 states. [2020-01-16 18:03:49,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:49,251 INFO L93 Difference]: Finished difference Result 365 states and 927 transitions. [2020-01-16 18:03:49,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:49,252 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:49,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:49,252 INFO L225 Difference]: With dead ends: 365 [2020-01-16 18:03:49,253 INFO L226 Difference]: Without dead ends: 349 [2020-01-16 18:03:49,253 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:49,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-01-16 18:03:49,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 205. [2020-01-16 18:03:49,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-01-16 18:03:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 605 transitions. [2020-01-16 18:03:49,258 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 605 transitions. Word has length 19 [2020-01-16 18:03:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:49,258 INFO L478 AbstractCegarLoop]: Abstraction has 205 states and 605 transitions. [2020-01-16 18:03:49,258 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 605 transitions. [2020-01-16 18:03:49,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:49,259 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:49,259 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:49,259 INFO L426 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:49,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:49,259 INFO L82 PathProgramCache]: Analyzing trace with hash -292309302, now seen corresponding path program 266 times [2020-01-16 18:03:49,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:49,259 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527448309] [2020-01-16 18:03:49,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:49,464 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527448309] [2020-01-16 18:03:49,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:49,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:49,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95093242] [2020-01-16 18:03:49,465 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:49,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:49,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:49,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:49,465 INFO L87 Difference]: Start difference. First operand 205 states and 605 transitions. Second operand 8 states. [2020-01-16 18:03:49,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:49,539 INFO L93 Difference]: Finished difference Result 363 states and 917 transitions. [2020-01-16 18:03:49,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:49,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:49,540 INFO L225 Difference]: With dead ends: 363 [2020-01-16 18:03:49,540 INFO L226 Difference]: Without dead ends: 341 [2020-01-16 18:03:49,540 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:49,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-01-16 18:03:49,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 197. [2020-01-16 18:03:49,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-01-16 18:03:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 584 transitions. [2020-01-16 18:03:49,545 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 584 transitions. Word has length 19 [2020-01-16 18:03:49,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:49,545 INFO L478 AbstractCegarLoop]: Abstraction has 197 states and 584 transitions. [2020-01-16 18:03:49,545 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:49,545 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 584 transitions. [2020-01-16 18:03:49,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:49,546 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:49,546 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:49,546 INFO L426 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:49,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:49,546 INFO L82 PathProgramCache]: Analyzing trace with hash 514429266, now seen corresponding path program 267 times [2020-01-16 18:03:49,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:49,546 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811636736] [2020-01-16 18:03:49,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:49,754 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811636736] [2020-01-16 18:03:49,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:49,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:49,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397160579] [2020-01-16 18:03:49,755 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:49,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:49,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:49,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:49,755 INFO L87 Difference]: Start difference. First operand 197 states and 584 transitions. Second operand 8 states. [2020-01-16 18:03:49,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:49,808 INFO L93 Difference]: Finished difference Result 362 states and 914 transitions. [2020-01-16 18:03:49,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:49,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:49,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:49,809 INFO L225 Difference]: With dead ends: 362 [2020-01-16 18:03:49,809 INFO L226 Difference]: Without dead ends: 346 [2020-01-16 18:03:49,810 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-01-16 18:03:49,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 203. [2020-01-16 18:03:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-01-16 18:03:49,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 595 transitions. [2020-01-16 18:03:49,815 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 595 transitions. Word has length 19 [2020-01-16 18:03:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:49,816 INFO L478 AbstractCegarLoop]: Abstraction has 203 states and 595 transitions. [2020-01-16 18:03:49,816 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 595 transitions. [2020-01-16 18:03:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:49,816 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:49,816 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:49,817 INFO L426 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:49,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:49,817 INFO L82 PathProgramCache]: Analyzing trace with hash -461775484, now seen corresponding path program 268 times [2020-01-16 18:03:49,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:49,817 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631977987] [2020-01-16 18:03:49,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:50,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631977987] [2020-01-16 18:03:50,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:50,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:50,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119827189] [2020-01-16 18:03:50,036 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:50,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:50,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:50,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:50,036 INFO L87 Difference]: Start difference. First operand 203 states and 595 transitions. Second operand 8 states. [2020-01-16 18:03:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:50,111 INFO L93 Difference]: Finished difference Result 359 states and 903 transitions. [2020-01-16 18:03:50,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:50,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:50,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:50,113 INFO L225 Difference]: With dead ends: 359 [2020-01-16 18:03:50,113 INFO L226 Difference]: Without dead ends: 340 [2020-01-16 18:03:50,113 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-01-16 18:03:50,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 197. [2020-01-16 18:03:50,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-01-16 18:03:50,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 578 transitions. [2020-01-16 18:03:50,118 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 578 transitions. Word has length 19 [2020-01-16 18:03:50,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:50,118 INFO L478 AbstractCegarLoop]: Abstraction has 197 states and 578 transitions. [2020-01-16 18:03:50,118 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:50,118 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 578 transitions. [2020-01-16 18:03:50,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:50,119 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:50,119 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:50,119 INFO L426 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:50,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:50,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1704196806, now seen corresponding path program 269 times [2020-01-16 18:03:50,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:50,119 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001256198] [2020-01-16 18:03:50,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:50,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:50,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001256198] [2020-01-16 18:03:50,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:50,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:50,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125364772] [2020-01-16 18:03:50,348 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:50,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:50,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:50,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:50,349 INFO L87 Difference]: Start difference. First operand 197 states and 578 transitions. Second operand 8 states. [2020-01-16 18:03:50,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:50,425 INFO L93 Difference]: Finished difference Result 357 states and 900 transitions. [2020-01-16 18:03:50,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:50,425 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:50,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:50,426 INFO L225 Difference]: With dead ends: 357 [2020-01-16 18:03:50,426 INFO L226 Difference]: Without dead ends: 343 [2020-01-16 18:03:50,427 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-01-16 18:03:50,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 202. [2020-01-16 18:03:50,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-01-16 18:03:50,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 588 transitions. [2020-01-16 18:03:50,431 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 588 transitions. Word has length 19 [2020-01-16 18:03:50,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:50,431 INFO L478 AbstractCegarLoop]: Abstraction has 202 states and 588 transitions. [2020-01-16 18:03:50,431 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:50,431 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 588 transitions. [2020-01-16 18:03:50,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:50,431 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:50,431 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:50,432 INFO L426 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:50,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:50,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1732490606, now seen corresponding path program 270 times [2020-01-16 18:03:50,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:50,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224072834] [2020-01-16 18:03:50,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:50,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224072834] [2020-01-16 18:03:50,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:50,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:50,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959020946] [2020-01-16 18:03:50,632 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:50,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:50,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:50,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:50,633 INFO L87 Difference]: Start difference. First operand 202 states and 588 transitions. Second operand 8 states. [2020-01-16 18:03:50,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:50,711 INFO L93 Difference]: Finished difference Result 356 states and 893 transitions. [2020-01-16 18:03:50,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:50,712 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:50,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:50,712 INFO L225 Difference]: With dead ends: 356 [2020-01-16 18:03:50,712 INFO L226 Difference]: Without dead ends: 330 [2020-01-16 18:03:50,713 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:50,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-01-16 18:03:50,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 189. [2020-01-16 18:03:50,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:03:50,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 560 transitions. [2020-01-16 18:03:50,717 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 560 transitions. Word has length 19 [2020-01-16 18:03:50,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:50,717 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 560 transitions. [2020-01-16 18:03:50,717 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:50,717 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 560 transitions. [2020-01-16 18:03:50,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:50,717 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:50,717 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:50,717 INFO L426 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:50,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:50,718 INFO L82 PathProgramCache]: Analyzing trace with hash 710767946, now seen corresponding path program 271 times [2020-01-16 18:03:50,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:50,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14332681] [2020-01-16 18:03:50,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:50,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14332681] [2020-01-16 18:03:50,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:50,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:50,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708814635] [2020-01-16 18:03:50,937 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:50,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:50,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:50,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:50,938 INFO L87 Difference]: Start difference. First operand 189 states and 560 transitions. Second operand 8 states. [2020-01-16 18:03:50,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:50,997 INFO L93 Difference]: Finished difference Result 344 states and 860 transitions. [2020-01-16 18:03:50,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:50,998 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:50,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:50,999 INFO L225 Difference]: With dead ends: 344 [2020-01-16 18:03:50,999 INFO L226 Difference]: Without dead ends: 328 [2020-01-16 18:03:50,999 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:51,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-01-16 18:03:51,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 201. [2020-01-16 18:03:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-01-16 18:03:51,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 586 transitions. [2020-01-16 18:03:51,003 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 586 transitions. Word has length 19 [2020-01-16 18:03:51,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:51,004 INFO L478 AbstractCegarLoop]: Abstraction has 201 states and 586 transitions. [2020-01-16 18:03:51,004 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:51,004 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 586 transitions. [2020-01-16 18:03:51,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:51,004 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:51,004 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:51,004 INFO L426 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:51,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:51,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1085419132, now seen corresponding path program 272 times [2020-01-16 18:03:51,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:51,005 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402482300] [2020-01-16 18:03:51,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:51,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402482300] [2020-01-16 18:03:51,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:51,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:51,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752203124] [2020-01-16 18:03:51,212 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:51,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:51,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:51,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:51,213 INFO L87 Difference]: Start difference. First operand 201 states and 586 transitions. Second operand 8 states. [2020-01-16 18:03:51,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:51,293 INFO L93 Difference]: Finished difference Result 342 states and 850 transitions. [2020-01-16 18:03:51,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:51,293 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:51,294 INFO L225 Difference]: With dead ends: 342 [2020-01-16 18:03:51,294 INFO L226 Difference]: Without dead ends: 320 [2020-01-16 18:03:51,295 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:51,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-01-16 18:03:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 193. [2020-01-16 18:03:51,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-01-16 18:03:51,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 568 transitions. [2020-01-16 18:03:51,299 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 568 transitions. Word has length 19 [2020-01-16 18:03:51,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:51,299 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 568 transitions. [2020-01-16 18:03:51,299 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:51,299 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 568 transitions. [2020-01-16 18:03:51,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:51,299 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:51,299 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:51,299 INFO L426 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:51,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:51,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1240965252, now seen corresponding path program 273 times [2020-01-16 18:03:51,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:51,300 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809961982] [2020-01-16 18:03:51,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:51,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809961982] [2020-01-16 18:03:51,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:51,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:51,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3553234] [2020-01-16 18:03:51,503 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:51,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:51,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:51,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:51,504 INFO L87 Difference]: Start difference. First operand 193 states and 568 transitions. Second operand 8 states. [2020-01-16 18:03:51,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:51,560 INFO L93 Difference]: Finished difference Result 327 states and 818 transitions. [2020-01-16 18:03:51,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:51,561 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:51,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:51,562 INFO L225 Difference]: With dead ends: 327 [2020-01-16 18:03:51,562 INFO L226 Difference]: Without dead ends: 311 [2020-01-16 18:03:51,562 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:51,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-01-16 18:03:51,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 196. [2020-01-16 18:03:51,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-01-16 18:03:51,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 572 transitions. [2020-01-16 18:03:51,566 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 572 transitions. Word has length 19 [2020-01-16 18:03:51,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:51,567 INFO L478 AbstractCegarLoop]: Abstraction has 196 states and 572 transitions. [2020-01-16 18:03:51,567 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:51,567 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 572 transitions. [2020-01-16 18:03:51,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:51,567 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:51,567 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:51,567 INFO L426 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:51,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:51,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1500023478, now seen corresponding path program 274 times [2020-01-16 18:03:51,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:51,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863764627] [2020-01-16 18:03:51,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:51,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:51,771 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863764627] [2020-01-16 18:03:51,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:51,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:51,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407107206] [2020-01-16 18:03:51,771 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:51,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:51,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:51,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:51,772 INFO L87 Difference]: Start difference. First operand 196 states and 572 transitions. Second operand 8 states. [2020-01-16 18:03:51,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:51,829 INFO L93 Difference]: Finished difference Result 312 states and 794 transitions. [2020-01-16 18:03:51,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:51,829 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:51,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:51,830 INFO L225 Difference]: With dead ends: 312 [2020-01-16 18:03:51,830 INFO L226 Difference]: Without dead ends: 299 [2020-01-16 18:03:51,830 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-01-16 18:03:51,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 193. [2020-01-16 18:03:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-01-16 18:03:51,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 565 transitions. [2020-01-16 18:03:51,834 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 565 transitions. Word has length 19 [2020-01-16 18:03:51,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:51,834 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 565 transitions. [2020-01-16 18:03:51,834 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 565 transitions. [2020-01-16 18:03:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:51,835 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:51,835 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:51,835 INFO L426 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:51,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:51,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1131696324, now seen corresponding path program 275 times [2020-01-16 18:03:51,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:51,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96537098] [2020-01-16 18:03:51,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:52,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96537098] [2020-01-16 18:03:52,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:52,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:52,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002092691] [2020-01-16 18:03:52,032 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:52,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:52,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:52,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:52,033 INFO L87 Difference]: Start difference. First operand 193 states and 565 transitions. Second operand 8 states. [2020-01-16 18:03:52,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:52,115 INFO L93 Difference]: Finished difference Result 324 states and 810 transitions. [2020-01-16 18:03:52,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:52,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:52,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:52,116 INFO L225 Difference]: With dead ends: 324 [2020-01-16 18:03:52,116 INFO L226 Difference]: Without dead ends: 310 [2020-01-16 18:03:52,117 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:52,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-01-16 18:03:52,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 195. [2020-01-16 18:03:52,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-01-16 18:03:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 568 transitions. [2020-01-16 18:03:52,122 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 568 transitions. Word has length 19 [2020-01-16 18:03:52,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:52,122 INFO L478 AbstractCegarLoop]: Abstraction has 195 states and 568 transitions. [2020-01-16 18:03:52,122 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:52,122 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 568 transitions. [2020-01-16 18:03:52,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:52,123 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:52,123 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:52,123 INFO L426 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:52,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:52,123 INFO L82 PathProgramCache]: Analyzing trace with hash -11566494, now seen corresponding path program 276 times [2020-01-16 18:03:52,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:52,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013765697] [2020-01-16 18:03:52,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:52,339 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013765697] [2020-01-16 18:03:52,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:52,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:52,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548512299] [2020-01-16 18:03:52,340 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:52,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:52,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:52,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:52,340 INFO L87 Difference]: Start difference. First operand 195 states and 568 transitions. Second operand 8 states. [2020-01-16 18:03:52,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:52,410 INFO L93 Difference]: Finished difference Result 311 states and 790 transitions. [2020-01-16 18:03:52,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:52,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:52,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:52,411 INFO L225 Difference]: With dead ends: 311 [2020-01-16 18:03:52,411 INFO L226 Difference]: Without dead ends: 295 [2020-01-16 18:03:52,411 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:52,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-01-16 18:03:52,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 189. [2020-01-16 18:03:52,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:03:52,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 556 transitions. [2020-01-16 18:03:52,416 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 556 transitions. Word has length 19 [2020-01-16 18:03:52,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:52,416 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 556 transitions. [2020-01-16 18:03:52,416 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:52,416 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 556 transitions. [2020-01-16 18:03:52,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:52,416 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:52,417 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:52,417 INFO L426 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:52,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:52,417 INFO L82 PathProgramCache]: Analyzing trace with hash -790658038, now seen corresponding path program 277 times [2020-01-16 18:03:52,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:52,417 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310094562] [2020-01-16 18:03:52,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:52,618 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310094562] [2020-01-16 18:03:52,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:52,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:52,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883979658] [2020-01-16 18:03:52,619 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:52,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:52,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:52,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:52,619 INFO L87 Difference]: Start difference. First operand 189 states and 556 transitions. Second operand 8 states. [2020-01-16 18:03:52,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:52,678 INFO L93 Difference]: Finished difference Result 339 states and 846 transitions. [2020-01-16 18:03:52,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:52,678 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:52,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:52,679 INFO L225 Difference]: With dead ends: 339 [2020-01-16 18:03:52,679 INFO L226 Difference]: Without dead ends: 323 [2020-01-16 18:03:52,679 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:52,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-01-16 18:03:52,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 195. [2020-01-16 18:03:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-01-16 18:03:52,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 570 transitions. [2020-01-16 18:03:52,684 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 570 transitions. Word has length 19 [2020-01-16 18:03:52,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:52,684 INFO L478 AbstractCegarLoop]: Abstraction has 195 states and 570 transitions. [2020-01-16 18:03:52,684 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:52,684 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 570 transitions. [2020-01-16 18:03:52,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:52,685 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:52,685 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:52,685 INFO L426 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:52,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:52,685 INFO L82 PathProgramCache]: Analyzing trace with hash -531599812, now seen corresponding path program 278 times [2020-01-16 18:03:52,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:52,685 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379853598] [2020-01-16 18:03:52,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:52,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:52,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379853598] [2020-01-16 18:03:52,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:52,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:52,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173048158] [2020-01-16 18:03:52,881 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:52,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:52,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:52,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:52,881 INFO L87 Difference]: Start difference. First operand 195 states and 570 transitions. Second operand 8 states. [2020-01-16 18:03:52,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:52,940 INFO L93 Difference]: Finished difference Result 333 states and 831 transitions. [2020-01-16 18:03:52,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:52,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:52,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:52,942 INFO L225 Difference]: With dead ends: 333 [2020-01-16 18:03:52,942 INFO L226 Difference]: Without dead ends: 320 [2020-01-16 18:03:52,942 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:52,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-01-16 18:03:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 192. [2020-01-16 18:03:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-01-16 18:03:52,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 563 transitions. [2020-01-16 18:03:52,946 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 563 transitions. Word has length 19 [2020-01-16 18:03:52,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:52,946 INFO L478 AbstractCegarLoop]: Abstraction has 192 states and 563 transitions. [2020-01-16 18:03:52,946 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:52,947 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 563 transitions. [2020-01-16 18:03:52,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:52,947 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:52,947 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:52,947 INFO L426 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:52,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:52,947 INFO L82 PathProgramCache]: Analyzing trace with hash 303433550, now seen corresponding path program 279 times [2020-01-16 18:03:52,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:52,948 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445188794] [2020-01-16 18:03:52,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:53,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:53,145 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445188794] [2020-01-16 18:03:53,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:53,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:53,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378518434] [2020-01-16 18:03:53,145 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:53,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:53,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:53,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:53,146 INFO L87 Difference]: Start difference. First operand 192 states and 563 transitions. Second operand 8 states. [2020-01-16 18:03:53,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:53,208 INFO L93 Difference]: Finished difference Result 339 states and 843 transitions. [2020-01-16 18:03:53,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:53,208 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:53,209 INFO L225 Difference]: With dead ends: 339 [2020-01-16 18:03:53,209 INFO L226 Difference]: Without dead ends: 323 [2020-01-16 18:03:53,209 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:53,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-01-16 18:03:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 198. [2020-01-16 18:03:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-01-16 18:03:53,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 574 transitions. [2020-01-16 18:03:53,213 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 574 transitions. Word has length 19 [2020-01-16 18:03:53,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:53,213 INFO L478 AbstractCegarLoop]: Abstraction has 198 states and 574 transitions. [2020-01-16 18:03:53,213 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:53,213 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 574 transitions. [2020-01-16 18:03:53,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:53,214 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:53,214 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:53,214 INFO L426 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:53,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:53,214 INFO L82 PathProgramCache]: Analyzing trace with hash -672771200, now seen corresponding path program 280 times [2020-01-16 18:03:53,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:53,214 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849756093] [2020-01-16 18:03:53,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:53,410 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849756093] [2020-01-16 18:03:53,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:53,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:53,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840435452] [2020-01-16 18:03:53,410 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:53,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:53,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:53,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:53,411 INFO L87 Difference]: Start difference. First operand 198 states and 574 transitions. Second operand 8 states. [2020-01-16 18:03:53,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:53,492 INFO L93 Difference]: Finished difference Result 336 states and 832 transitions. [2020-01-16 18:03:53,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:53,493 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:53,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:53,494 INFO L225 Difference]: With dead ends: 336 [2020-01-16 18:03:53,494 INFO L226 Difference]: Without dead ends: 317 [2020-01-16 18:03:53,494 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:53,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-01-16 18:03:53,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 192. [2020-01-16 18:03:53,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-01-16 18:03:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 560 transitions. [2020-01-16 18:03:53,499 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 560 transitions. Word has length 19 [2020-01-16 18:03:53,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:53,499 INFO L478 AbstractCegarLoop]: Abstraction has 192 states and 560 transitions. [2020-01-16 18:03:53,499 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:53,499 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 560 transitions. [2020-01-16 18:03:53,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:53,500 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:53,500 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:53,500 INFO L426 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:53,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:53,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1980171160, now seen corresponding path program 281 times [2020-01-16 18:03:53,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:53,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190231423] [2020-01-16 18:03:53,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:53,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190231423] [2020-01-16 18:03:53,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:53,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:53,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206236821] [2020-01-16 18:03:53,740 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:53,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:53,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:53,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:53,740 INFO L87 Difference]: Start difference. First operand 192 states and 560 transitions. Second operand 8 states. [2020-01-16 18:03:53,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:53,797 INFO L93 Difference]: Finished difference Result 323 states and 804 transitions. [2020-01-16 18:03:53,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:53,797 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:53,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:53,798 INFO L225 Difference]: With dead ends: 323 [2020-01-16 18:03:53,798 INFO L226 Difference]: Without dead ends: 313 [2020-01-16 18:03:53,798 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:53,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-01-16 18:03:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 194. [2020-01-16 18:03:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-01-16 18:03:53,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 563 transitions. [2020-01-16 18:03:53,803 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 563 transitions. Word has length 19 [2020-01-16 18:03:53,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:53,803 INFO L478 AbstractCegarLoop]: Abstraction has 194 states and 563 transitions. [2020-01-16 18:03:53,803 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:53,803 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 563 transitions. [2020-01-16 18:03:53,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:53,803 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:53,803 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:53,803 INFO L426 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:53,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:53,804 INFO L82 PathProgramCache]: Analyzing trace with hash -490766164, now seen corresponding path program 282 times [2020-01-16 18:03:53,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:53,804 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356765567] [2020-01-16 18:03:53,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:53,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356765567] [2020-01-16 18:03:53,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:53,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:53,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795928411] [2020-01-16 18:03:53,997 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:53,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:53,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:53,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:53,998 INFO L87 Difference]: Start difference. First operand 194 states and 563 transitions. Second operand 8 states. [2020-01-16 18:03:54,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:54,074 INFO L93 Difference]: Finished difference Result 321 states and 799 transitions. [2020-01-16 18:03:54,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:54,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:54,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:54,076 INFO L225 Difference]: With dead ends: 321 [2020-01-16 18:03:54,076 INFO L226 Difference]: Without dead ends: 303 [2020-01-16 18:03:54,076 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:54,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-01-16 18:03:54,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 189. [2020-01-16 18:03:54,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:03:54,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 553 transitions. [2020-01-16 18:03:54,081 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 553 transitions. Word has length 19 [2020-01-16 18:03:54,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:54,081 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 553 transitions. [2020-01-16 18:03:54,081 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:54,081 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 553 transitions. [2020-01-16 18:03:54,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:54,081 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:54,082 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:54,082 INFO L426 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:54,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:54,082 INFO L82 PathProgramCache]: Analyzing trace with hash 504306274, now seen corresponding path program 283 times [2020-01-16 18:03:54,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:54,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033757865] [2020-01-16 18:03:54,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:54,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033757865] [2020-01-16 18:03:54,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:54,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:54,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887041828] [2020-01-16 18:03:54,273 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:54,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:54,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:54,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:54,273 INFO L87 Difference]: Start difference. First operand 189 states and 553 transitions. Second operand 8 states. [2020-01-16 18:03:54,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:54,355 INFO L93 Difference]: Finished difference Result 329 states and 825 transitions. [2020-01-16 18:03:54,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:54,356 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:54,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:54,356 INFO L225 Difference]: With dead ends: 329 [2020-01-16 18:03:54,357 INFO L226 Difference]: Without dead ends: 315 [2020-01-16 18:03:54,357 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:54,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-01-16 18:03:54,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 193. [2020-01-16 18:03:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-01-16 18:03:54,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 563 transitions. [2020-01-16 18:03:54,362 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 563 transitions. Word has length 19 [2020-01-16 18:03:54,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:54,362 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 563 transitions. [2020-01-16 18:03:54,362 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:54,362 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 563 transitions. [2020-01-16 18:03:54,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:54,362 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:54,362 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:54,362 INFO L426 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:54,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:54,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1624436104, now seen corresponding path program 284 times [2020-01-16 18:03:54,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:54,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801259788] [2020-01-16 18:03:54,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:54,561 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801259788] [2020-01-16 18:03:54,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:54,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:54,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944376091] [2020-01-16 18:03:54,561 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:54,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:54,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:54,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:54,562 INFO L87 Difference]: Start difference. First operand 193 states and 563 transitions. Second operand 8 states. [2020-01-16 18:03:54,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:54,627 INFO L93 Difference]: Finished difference Result 325 states and 814 transitions. [2020-01-16 18:03:54,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:54,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:54,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:54,628 INFO L225 Difference]: With dead ends: 325 [2020-01-16 18:03:54,628 INFO L226 Difference]: Without dead ends: 313 [2020-01-16 18:03:54,628 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:54,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-01-16 18:03:54,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 191. [2020-01-16 18:03:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-01-16 18:03:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 558 transitions. [2020-01-16 18:03:54,633 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 558 transitions. Word has length 19 [2020-01-16 18:03:54,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:54,633 INFO L478 AbstractCegarLoop]: Abstraction has 191 states and 558 transitions. [2020-01-16 18:03:54,633 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:54,633 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 558 transitions. [2020-01-16 18:03:54,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:54,633 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:54,633 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:54,634 INFO L426 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:54,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:54,634 INFO L82 PathProgramCache]: Analyzing trace with hash -568779106, now seen corresponding path program 285 times [2020-01-16 18:03:54,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:54,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318521984] [2020-01-16 18:03:54,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:54,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:54,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318521984] [2020-01-16 18:03:54,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:54,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:54,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312278323] [2020-01-16 18:03:54,880 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:54,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:54,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:54,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:54,881 INFO L87 Difference]: Start difference. First operand 191 states and 558 transitions. Second operand 8 states. [2020-01-16 18:03:54,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:54,966 INFO L93 Difference]: Finished difference Result 330 states and 825 transitions. [2020-01-16 18:03:54,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:54,966 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:54,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:54,967 INFO L225 Difference]: With dead ends: 330 [2020-01-16 18:03:54,967 INFO L226 Difference]: Without dead ends: 316 [2020-01-16 18:03:54,967 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:54,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-01-16 18:03:54,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 196. [2020-01-16 18:03:54,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-01-16 18:03:54,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 568 transitions. [2020-01-16 18:03:54,972 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 568 transitions. Word has length 19 [2020-01-16 18:03:54,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:54,972 INFO L478 AbstractCegarLoop]: Abstraction has 196 states and 568 transitions. [2020-01-16 18:03:54,972 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:54,973 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 568 transitions. [2020-01-16 18:03:54,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:54,973 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:54,973 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:54,973 INFO L426 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:54,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:54,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1210836024, now seen corresponding path program 286 times [2020-01-16 18:03:54,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:54,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014532414] [2020-01-16 18:03:54,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:55,165 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014532414] [2020-01-16 18:03:55,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:55,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:55,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422900396] [2020-01-16 18:03:55,165 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:55,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:55,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:55,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:55,166 INFO L87 Difference]: Start difference. First operand 196 states and 568 transitions. Second operand 8 states. [2020-01-16 18:03:55,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:55,254 INFO L93 Difference]: Finished difference Result 329 states and 818 transitions. [2020-01-16 18:03:55,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:55,254 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:55,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:55,255 INFO L225 Difference]: With dead ends: 329 [2020-01-16 18:03:55,255 INFO L226 Difference]: Without dead ends: 311 [2020-01-16 18:03:55,255 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:55,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-01-16 18:03:55,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 191. [2020-01-16 18:03:55,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-01-16 18:03:55,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 556 transitions. [2020-01-16 18:03:55,259 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 556 transitions. Word has length 19 [2020-01-16 18:03:55,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:55,260 INFO L478 AbstractCegarLoop]: Abstraction has 191 states and 556 transitions. [2020-01-16 18:03:55,260 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:55,260 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 556 transitions. [2020-01-16 18:03:55,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:55,260 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:55,260 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:55,260 INFO L426 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:55,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:55,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1594820036, now seen corresponding path program 287 times [2020-01-16 18:03:55,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:55,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530671801] [2020-01-16 18:03:55,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:55,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:55,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530671801] [2020-01-16 18:03:55,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:55,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:55,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575181653] [2020-01-16 18:03:55,461 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:55,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:55,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:55,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:55,461 INFO L87 Difference]: Start difference. First operand 191 states and 556 transitions. Second operand 8 states. [2020-01-16 18:03:55,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:55,533 INFO L93 Difference]: Finished difference Result 319 states and 795 transitions. [2020-01-16 18:03:55,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:55,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:55,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:55,534 INFO L225 Difference]: With dead ends: 319 [2020-01-16 18:03:55,534 INFO L226 Difference]: Without dead ends: 309 [2020-01-16 18:03:55,534 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-01-16 18:03:55,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 193. [2020-01-16 18:03:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-01-16 18:03:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 559 transitions. [2020-01-16 18:03:55,539 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 559 transitions. Word has length 19 [2020-01-16 18:03:55,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:55,539 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 559 transitions. [2020-01-16 18:03:55,539 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:55,540 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 559 transitions. [2020-01-16 18:03:55,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:55,540 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:55,540 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:55,540 INFO L426 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:55,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:55,540 INFO L82 PathProgramCache]: Analyzing trace with hash -105415040, now seen corresponding path program 288 times [2020-01-16 18:03:55,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:55,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729350764] [2020-01-16 18:03:55,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:55,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729350764] [2020-01-16 18:03:55,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:55,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:55,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071651592] [2020-01-16 18:03:55,732 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:55,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:55,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:55,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:55,732 INFO L87 Difference]: Start difference. First operand 193 states and 559 transitions. Second operand 8 states. [2020-01-16 18:03:55,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:55,812 INFO L93 Difference]: Finished difference Result 317 states and 790 transitions. [2020-01-16 18:03:55,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:55,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:55,814 INFO L225 Difference]: With dead ends: 317 [2020-01-16 18:03:55,814 INFO L226 Difference]: Without dead ends: 295 [2020-01-16 18:03:55,814 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-01-16 18:03:55,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 184. [2020-01-16 18:03:55,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-01-16 18:03:55,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 543 transitions. [2020-01-16 18:03:55,819 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 543 transitions. Word has length 19 [2020-01-16 18:03:55,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:55,819 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 543 transitions. [2020-01-16 18:03:55,819 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:55,819 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 543 transitions. [2020-01-16 18:03:55,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:55,819 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:55,820 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:55,820 INFO L426 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:55,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:55,820 INFO L82 PathProgramCache]: Analyzing trace with hash -907792650, now seen corresponding path program 289 times [2020-01-16 18:03:55,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:55,820 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394509686] [2020-01-16 18:03:55,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:56,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394509686] [2020-01-16 18:03:56,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:56,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:56,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118867229] [2020-01-16 18:03:56,034 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:56,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:56,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:56,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:56,035 INFO L87 Difference]: Start difference. First operand 184 states and 543 transitions. Second operand 8 states. [2020-01-16 18:03:56,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:56,096 INFO L93 Difference]: Finished difference Result 330 states and 816 transitions. [2020-01-16 18:03:56,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:56,097 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:56,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:56,098 INFO L225 Difference]: With dead ends: 330 [2020-01-16 18:03:56,098 INFO L226 Difference]: Without dead ends: 314 [2020-01-16 18:03:56,098 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:56,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-01-16 18:03:56,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 199. [2020-01-16 18:03:56,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-01-16 18:03:56,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2020-01-16 18:03:56,102 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 19 [2020-01-16 18:03:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:56,102 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2020-01-16 18:03:56,102 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2020-01-16 18:03:56,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:56,103 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:56,103 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:56,103 INFO L426 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:56,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:56,103 INFO L82 PathProgramCache]: Analyzing trace with hash -533141464, now seen corresponding path program 290 times [2020-01-16 18:03:56,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:56,103 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065244030] [2020-01-16 18:03:56,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:56,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:56,312 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065244030] [2020-01-16 18:03:56,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:56,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:56,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993221668] [2020-01-16 18:03:56,313 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:56,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:56,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:56,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:56,313 INFO L87 Difference]: Start difference. First operand 199 states and 580 transitions. Second operand 8 states. [2020-01-16 18:03:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:56,401 INFO L93 Difference]: Finished difference Result 328 states and 806 transitions. [2020-01-16 18:03:56,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:56,401 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:56,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:56,402 INFO L225 Difference]: With dead ends: 328 [2020-01-16 18:03:56,402 INFO L226 Difference]: Without dead ends: 306 [2020-01-16 18:03:56,403 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:56,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-01-16 18:03:56,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 191. [2020-01-16 18:03:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-01-16 18:03:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 562 transitions. [2020-01-16 18:03:56,408 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 562 transitions. Word has length 19 [2020-01-16 18:03:56,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:56,408 INFO L478 AbstractCegarLoop]: Abstraction has 191 states and 562 transitions. [2020-01-16 18:03:56,408 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:56,408 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 562 transitions. [2020-01-16 18:03:56,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:56,409 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:56,409 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:56,409 INFO L426 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:56,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:56,409 INFO L82 PathProgramCache]: Analyzing trace with hash -703191568, now seen corresponding path program 291 times [2020-01-16 18:03:56,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:56,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072858971] [2020-01-16 18:03:56,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:56,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:56,611 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072858971] [2020-01-16 18:03:56,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:56,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:56,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129248161] [2020-01-16 18:03:56,612 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:56,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:56,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:56,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:56,612 INFO L87 Difference]: Start difference. First operand 191 states and 562 transitions. Second operand 8 states. [2020-01-16 18:03:56,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:56,683 INFO L93 Difference]: Finished difference Result 321 states and 789 transitions. [2020-01-16 18:03:56,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:56,683 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:56,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:56,684 INFO L225 Difference]: With dead ends: 321 [2020-01-16 18:03:56,684 INFO L226 Difference]: Without dead ends: 305 [2020-01-16 18:03:56,685 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:56,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-01-16 18:03:56,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 194. [2020-01-16 18:03:56,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-01-16 18:03:56,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 566 transitions. [2020-01-16 18:03:56,689 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 566 transitions. Word has length 19 [2020-01-16 18:03:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:56,689 INFO L478 AbstractCegarLoop]: Abstraction has 194 states and 566 transitions. [2020-01-16 18:03:56,689 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:56,689 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 566 transitions. [2020-01-16 18:03:56,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:56,690 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:56,690 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:56,690 INFO L426 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:56,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:56,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1440049182, now seen corresponding path program 292 times [2020-01-16 18:03:56,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:56,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131065832] [2020-01-16 18:03:56,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:56,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131065832] [2020-01-16 18:03:56,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:56,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:56,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676781864] [2020-01-16 18:03:56,874 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:56,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:56,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:56,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:56,875 INFO L87 Difference]: Start difference. First operand 194 states and 566 transitions. Second operand 8 states. [2020-01-16 18:03:56,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:56,970 INFO L93 Difference]: Finished difference Result 315 states and 774 transitions. [2020-01-16 18:03:56,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:56,970 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:56,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:56,971 INFO L225 Difference]: With dead ends: 315 [2020-01-16 18:03:56,971 INFO L226 Difference]: Without dead ends: 302 [2020-01-16 18:03:56,972 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-01-16 18:03:56,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 191. [2020-01-16 18:03:56,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-01-16 18:03:56,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 559 transitions. [2020-01-16 18:03:56,976 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 559 transitions. Word has length 19 [2020-01-16 18:03:56,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:56,976 INFO L478 AbstractCegarLoop]: Abstraction has 191 states and 559 transitions. [2020-01-16 18:03:56,977 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 559 transitions. [2020-01-16 18:03:56,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:56,977 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:56,977 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:56,977 INFO L426 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:56,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:56,977 INFO L82 PathProgramCache]: Analyzing trace with hash -2101207602, now seen corresponding path program 293 times [2020-01-16 18:03:56,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:56,978 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375712198] [2020-01-16 18:03:56,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:57,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:57,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375712198] [2020-01-16 18:03:57,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:57,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:57,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413738112] [2020-01-16 18:03:57,162 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:57,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:57,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:57,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:57,163 INFO L87 Difference]: Start difference. First operand 191 states and 559 transitions. Second operand 8 states. [2020-01-16 18:03:57,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:57,241 INFO L93 Difference]: Finished difference Result 316 states and 778 transitions. [2020-01-16 18:03:57,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:57,242 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:57,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:57,243 INFO L225 Difference]: With dead ends: 316 [2020-01-16 18:03:57,243 INFO L226 Difference]: Without dead ends: 302 [2020-01-16 18:03:57,243 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:57,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-01-16 18:03:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 193. [2020-01-16 18:03:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-01-16 18:03:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 562 transitions. [2020-01-16 18:03:57,247 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 562 transitions. Word has length 19 [2020-01-16 18:03:57,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:57,247 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 562 transitions. [2020-01-16 18:03:57,247 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:57,247 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 562 transitions. [2020-01-16 18:03:57,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:57,248 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:57,248 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:57,248 INFO L426 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:57,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:57,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1319424368, now seen corresponding path program 294 times [2020-01-16 18:03:57,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:57,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233533411] [2020-01-16 18:03:57,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:57,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233533411] [2020-01-16 18:03:57,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:57,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:57,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678607344] [2020-01-16 18:03:57,436 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:57,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:57,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:57,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:57,437 INFO L87 Difference]: Start difference. First operand 193 states and 562 transitions. Second operand 8 states. [2020-01-16 18:03:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:57,516 INFO L93 Difference]: Finished difference Result 312 states and 767 transitions. [2020-01-16 18:03:57,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:57,517 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:57,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:57,518 INFO L225 Difference]: With dead ends: 312 [2020-01-16 18:03:57,518 INFO L226 Difference]: Without dead ends: 296 [2020-01-16 18:03:57,518 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:57,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-01-16 18:03:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 187. [2020-01-16 18:03:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-01-16 18:03:57,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 551 transitions. [2020-01-16 18:03:57,522 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 551 transitions. Word has length 19 [2020-01-16 18:03:57,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:57,522 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 551 transitions. [2020-01-16 18:03:57,522 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:57,522 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 551 transitions. [2020-01-16 18:03:57,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:57,523 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:57,523 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:57,523 INFO L426 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:57,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:57,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1330278376, now seen corresponding path program 295 times [2020-01-16 18:03:57,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:57,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736975642] [2020-01-16 18:03:57,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:57,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736975642] [2020-01-16 18:03:57,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:57,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:57,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500649478] [2020-01-16 18:03:57,744 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:57,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:57,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:57,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:57,744 INFO L87 Difference]: Start difference. First operand 187 states and 551 transitions. Second operand 8 states. [2020-01-16 18:03:57,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:57,806 INFO L93 Difference]: Finished difference Result 318 states and 780 transitions. [2020-01-16 18:03:57,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:57,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:57,807 INFO L225 Difference]: With dead ends: 318 [2020-01-16 18:03:57,807 INFO L226 Difference]: Without dead ends: 302 [2020-01-16 18:03:57,807 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:57,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-01-16 18:03:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 199. [2020-01-16 18:03:57,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-01-16 18:03:57,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 577 transitions. [2020-01-16 18:03:57,813 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 577 transitions. Word has length 19 [2020-01-16 18:03:57,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:57,813 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 577 transitions. [2020-01-16 18:03:57,813 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:57,813 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 577 transitions. [2020-01-16 18:03:57,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:57,814 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:57,814 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:57,814 INFO L426 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:57,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:57,814 INFO L82 PathProgramCache]: Analyzing trace with hash -955627190, now seen corresponding path program 296 times [2020-01-16 18:03:57,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:57,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018673215] [2020-01-16 18:03:57,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:58,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018673215] [2020-01-16 18:03:58,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:58,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:58,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444179159] [2020-01-16 18:03:58,025 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:58,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:58,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:58,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:58,025 INFO L87 Difference]: Start difference. First operand 199 states and 577 transitions. Second operand 8 states. [2020-01-16 18:03:58,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:58,104 INFO L93 Difference]: Finished difference Result 316 states and 770 transitions. [2020-01-16 18:03:58,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:58,104 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:58,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:58,105 INFO L225 Difference]: With dead ends: 316 [2020-01-16 18:03:58,105 INFO L226 Difference]: Without dead ends: 294 [2020-01-16 18:03:58,105 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:58,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-01-16 18:03:58,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 191. [2020-01-16 18:03:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-01-16 18:03:58,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 559 transitions. [2020-01-16 18:03:58,109 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 559 transitions. Word has length 19 [2020-01-16 18:03:58,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:58,109 INFO L478 AbstractCegarLoop]: Abstraction has 191 states and 559 transitions. [2020-01-16 18:03:58,109 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:58,109 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 559 transitions. [2020-01-16 18:03:58,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:58,109 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:58,110 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:58,110 INFO L426 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:58,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:58,110 INFO L82 PathProgramCache]: Analyzing trace with hash -800081070, now seen corresponding path program 297 times [2020-01-16 18:03:58,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:58,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348601505] [2020-01-16 18:03:58,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:58,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348601505] [2020-01-16 18:03:58,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:58,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:58,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666698786] [2020-01-16 18:03:58,320 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:58,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:58,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:58,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:58,320 INFO L87 Difference]: Start difference. First operand 191 states and 559 transitions. Second operand 8 states. [2020-01-16 18:03:58,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:58,396 INFO L93 Difference]: Finished difference Result 301 states and 738 transitions. [2020-01-16 18:03:58,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:58,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:58,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:58,397 INFO L225 Difference]: With dead ends: 301 [2020-01-16 18:03:58,397 INFO L226 Difference]: Without dead ends: 285 [2020-01-16 18:03:58,397 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:58,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-01-16 18:03:58,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 194. [2020-01-16 18:03:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-01-16 18:03:58,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 563 transitions. [2020-01-16 18:03:58,402 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 563 transitions. Word has length 19 [2020-01-16 18:03:58,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:58,402 INFO L478 AbstractCegarLoop]: Abstraction has 194 states and 563 transitions. [2020-01-16 18:03:58,402 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:58,402 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 563 transitions. [2020-01-16 18:03:58,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:58,402 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:58,403 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:58,403 INFO L426 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:58,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:58,403 INFO L82 PathProgramCache]: Analyzing trace with hash -541022844, now seen corresponding path program 298 times [2020-01-16 18:03:58,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:58,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727878479] [2020-01-16 18:03:58,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:58,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727878479] [2020-01-16 18:03:58,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:58,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:58,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035807870] [2020-01-16 18:03:58,598 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:58,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:58,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:58,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:58,598 INFO L87 Difference]: Start difference. First operand 194 states and 563 transitions. Second operand 8 states. [2020-01-16 18:03:58,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:58,657 INFO L93 Difference]: Finished difference Result 286 states and 714 transitions. [2020-01-16 18:03:58,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:58,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:58,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:58,659 INFO L225 Difference]: With dead ends: 286 [2020-01-16 18:03:58,659 INFO L226 Difference]: Without dead ends: 273 [2020-01-16 18:03:58,659 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:58,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-01-16 18:03:58,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 191. [2020-01-16 18:03:58,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-01-16 18:03:58,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 556 transitions. [2020-01-16 18:03:58,664 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 556 transitions. Word has length 19 [2020-01-16 18:03:58,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:58,664 INFO L478 AbstractCegarLoop]: Abstraction has 191 states and 556 transitions. [2020-01-16 18:03:58,664 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:58,664 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 556 transitions. [2020-01-16 18:03:58,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:58,664 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:58,664 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:58,664 INFO L426 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:58,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:58,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1122224650, now seen corresponding path program 299 times [2020-01-16 18:03:58,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:58,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253664613] [2020-01-16 18:03:58,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:58,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253664613] [2020-01-16 18:03:58,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:58,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:58,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739037001] [2020-01-16 18:03:58,855 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:58,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:58,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:58,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:58,856 INFO L87 Difference]: Start difference. First operand 191 states and 556 transitions. Second operand 8 states. [2020-01-16 18:03:58,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:58,940 INFO L93 Difference]: Finished difference Result 298 states and 730 transitions. [2020-01-16 18:03:58,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:58,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:58,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:58,941 INFO L225 Difference]: With dead ends: 298 [2020-01-16 18:03:58,941 INFO L226 Difference]: Without dead ends: 284 [2020-01-16 18:03:58,941 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-01-16 18:03:58,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 193. [2020-01-16 18:03:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-01-16 18:03:58,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 559 transitions. [2020-01-16 18:03:58,947 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 559 transitions. Word has length 19 [2020-01-16 18:03:58,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:58,947 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 559 transitions. [2020-01-16 18:03:58,947 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:58,947 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 559 transitions. [2020-01-16 18:03:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:58,947 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:58,947 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:58,947 INFO L426 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:58,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:58,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2052612816, now seen corresponding path program 300 times [2020-01-16 18:03:58,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:58,948 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337596137] [2020-01-16 18:03:58,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:59,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337596137] [2020-01-16 18:03:59,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:59,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:59,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011999812] [2020-01-16 18:03:59,146 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:59,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:59,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:59,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:59,147 INFO L87 Difference]: Start difference. First operand 193 states and 559 transitions. Second operand 8 states. [2020-01-16 18:03:59,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:59,214 INFO L93 Difference]: Finished difference Result 285 states and 710 transitions. [2020-01-16 18:03:59,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:59,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:59,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:59,215 INFO L225 Difference]: With dead ends: 285 [2020-01-16 18:03:59,215 INFO L226 Difference]: Without dead ends: 269 [2020-01-16 18:03:59,215 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:59,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-01-16 18:03:59,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 187. [2020-01-16 18:03:59,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-01-16 18:03:59,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 548 transitions. [2020-01-16 18:03:59,220 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 548 transitions. Word has length 19 [2020-01-16 18:03:59,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:59,220 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 548 transitions. [2020-01-16 18:03:59,220 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:59,220 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 548 transitions. [2020-01-16 18:03:59,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:59,220 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:59,221 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:59,221 INFO L426 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:59,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:59,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1446944266, now seen corresponding path program 301 times [2020-01-16 18:03:59,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:59,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26708108] [2020-01-16 18:03:59,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:59,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26708108] [2020-01-16 18:03:59,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:59,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:59,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995786500] [2020-01-16 18:03:59,414 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:59,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:59,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:59,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:59,414 INFO L87 Difference]: Start difference. First operand 187 states and 548 transitions. Second operand 8 states. [2020-01-16 18:03:59,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:59,510 INFO L93 Difference]: Finished difference Result 294 states and 721 transitions. [2020-01-16 18:03:59,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:59,510 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:59,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:59,510 INFO L225 Difference]: With dead ends: 294 [2020-01-16 18:03:59,511 INFO L226 Difference]: Without dead ends: 278 [2020-01-16 18:03:59,511 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:59,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-01-16 18:03:59,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 192. [2020-01-16 18:03:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-01-16 18:03:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 558 transitions. [2020-01-16 18:03:59,514 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 558 transitions. Word has length 19 [2020-01-16 18:03:59,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:59,514 INFO L478 AbstractCegarLoop]: Abstraction has 192 states and 558 transitions. [2020-01-16 18:03:59,514 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:59,514 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 558 transitions. [2020-01-16 18:03:59,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:59,515 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:59,515 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:59,515 INFO L426 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:59,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:59,515 INFO L82 PathProgramCache]: Analyzing trace with hash 696296484, now seen corresponding path program 302 times [2020-01-16 18:03:59,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:59,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078846434] [2020-01-16 18:03:59,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:59,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078846434] [2020-01-16 18:03:59,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:59,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:59,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006085245] [2020-01-16 18:03:59,701 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:59,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:59,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:59,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:59,702 INFO L87 Difference]: Start difference. First operand 192 states and 558 transitions. Second operand 8 states. [2020-01-16 18:03:59,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:59,791 INFO L93 Difference]: Finished difference Result 288 states and 706 transitions. [2020-01-16 18:03:59,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:03:59,792 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:03:59,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:59,793 INFO L225 Difference]: With dead ends: 288 [2020-01-16 18:03:59,793 INFO L226 Difference]: Without dead ends: 275 [2020-01-16 18:03:59,793 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:03:59,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-01-16 18:03:59,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 189. [2020-01-16 18:03:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:03:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 552 transitions. [2020-01-16 18:03:59,797 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 552 transitions. Word has length 19 [2020-01-16 18:03:59,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:59,797 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 552 transitions. [2020-01-16 18:03:59,797 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:03:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 552 transitions. [2020-01-16 18:03:59,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:03:59,798 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:59,798 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:59,798 INFO L426 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:03:59,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:59,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1247585176, now seen corresponding path program 303 times [2020-01-16 18:03:59,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:59,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726826700] [2020-01-16 18:03:59,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:59,987 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726826700] [2020-01-16 18:03:59,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:59,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:03:59,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234752987] [2020-01-16 18:03:59,987 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:03:59,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:59,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:03:59,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:03:59,988 INFO L87 Difference]: Start difference. First operand 189 states and 552 transitions. Second operand 8 states. [2020-01-16 18:04:00,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:00,060 INFO L93 Difference]: Finished difference Result 283 states and 697 transitions. [2020-01-16 18:04:00,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:00,060 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:00,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:00,061 INFO L225 Difference]: With dead ends: 283 [2020-01-16 18:04:00,061 INFO L226 Difference]: Without dead ends: 267 [2020-01-16 18:04:00,061 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:00,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-01-16 18:04:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 192. [2020-01-16 18:04:00,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-01-16 18:04:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 556 transitions. [2020-01-16 18:04:00,066 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 556 transitions. Word has length 19 [2020-01-16 18:04:00,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:00,066 INFO L478 AbstractCegarLoop]: Abstraction has 192 states and 556 transitions. [2020-01-16 18:04:00,066 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:00,066 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 556 transitions. [2020-01-16 18:04:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:00,067 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:00,067 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:00,067 INFO L426 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:00,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:00,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1506643402, now seen corresponding path program 304 times [2020-01-16 18:04:00,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:00,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494674514] [2020-01-16 18:04:00,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:00,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:00,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494674514] [2020-01-16 18:04:00,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:00,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:00,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140403588] [2020-01-16 18:04:00,260 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:00,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:00,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:00,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:00,261 INFO L87 Difference]: Start difference. First operand 192 states and 556 transitions. Second operand 8 states. [2020-01-16 18:04:00,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:00,320 INFO L93 Difference]: Finished difference Result 268 states and 673 transitions. [2020-01-16 18:04:00,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:00,320 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:00,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:00,321 INFO L225 Difference]: With dead ends: 268 [2020-01-16 18:04:00,321 INFO L226 Difference]: Without dead ends: 255 [2020-01-16 18:04:00,321 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:00,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-01-16 18:04:00,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 189. [2020-01-16 18:04:00,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:04:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 550 transitions. [2020-01-16 18:04:00,326 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 550 transitions. Word has length 19 [2020-01-16 18:04:00,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:00,327 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 550 transitions. [2020-01-16 18:04:00,327 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:00,327 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 550 transitions. [2020-01-16 18:04:00,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:00,327 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:00,327 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:00,328 INFO L426 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:00,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:00,328 INFO L82 PathProgramCache]: Analyzing trace with hash 266205080, now seen corresponding path program 305 times [2020-01-16 18:04:00,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:00,328 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048350395] [2020-01-16 18:04:00,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:00,527 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048350395] [2020-01-16 18:04:00,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:00,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:00,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824182521] [2020-01-16 18:04:00,528 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:00,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:00,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:00,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:00,528 INFO L87 Difference]: Start difference. First operand 189 states and 550 transitions. Second operand 8 states. [2020-01-16 18:04:00,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:00,598 INFO L93 Difference]: Finished difference Result 266 states and 669 transitions. [2020-01-16 18:04:00,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:00,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:00,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:00,600 INFO L225 Difference]: With dead ends: 266 [2020-01-16 18:04:00,600 INFO L226 Difference]: Without dead ends: 256 [2020-01-16 18:04:00,600 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:00,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-01-16 18:04:00,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 190. [2020-01-16 18:04:00,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-01-16 18:04:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 551 transitions. [2020-01-16 18:04:00,606 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 551 transitions. Word has length 19 [2020-01-16 18:04:00,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:00,606 INFO L478 AbstractCegarLoop]: Abstraction has 190 states and 551 transitions. [2020-01-16 18:04:00,606 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:00,606 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 551 transitions. [2020-01-16 18:04:00,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:00,607 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:00,607 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:00,607 INFO L426 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:00,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:00,607 INFO L82 PathProgramCache]: Analyzing trace with hash 26562742, now seen corresponding path program 306 times [2020-01-16 18:04:00,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:00,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460868898] [2020-01-16 18:04:00,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:00,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460868898] [2020-01-16 18:04:00,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:00,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:00,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275632306] [2020-01-16 18:04:00,831 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:00,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:00,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:00,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:00,832 INFO L87 Difference]: Start difference. First operand 190 states and 551 transitions. Second operand 8 states. [2020-01-16 18:04:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:00,883 INFO L93 Difference]: Finished difference Result 255 states and 656 transitions. [2020-01-16 18:04:00,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:00,884 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:00,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:00,884 INFO L225 Difference]: With dead ends: 255 [2020-01-16 18:04:00,884 INFO L226 Difference]: Without dead ends: 242 [2020-01-16 18:04:00,885 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:00,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-01-16 18:04:00,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 187. [2020-01-16 18:04:00,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-01-16 18:04:00,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 546 transitions. [2020-01-16 18:04:00,889 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 546 transitions. Word has length 19 [2020-01-16 18:04:00,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:00,889 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 546 transitions. [2020-01-16 18:04:00,889 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:00,890 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 546 transitions. [2020-01-16 18:04:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:00,890 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:00,890 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:00,890 INFO L426 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:00,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:00,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1887873640, now seen corresponding path program 307 times [2020-01-16 18:04:00,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:00,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171116859] [2020-01-16 18:04:00,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:01,075 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171116859] [2020-01-16 18:04:01,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:01,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:01,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188085864] [2020-01-16 18:04:01,075 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:01,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:01,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:01,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:01,076 INFO L87 Difference]: Start difference. First operand 187 states and 546 transitions. Second operand 8 states. [2020-01-16 18:04:01,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:01,155 INFO L93 Difference]: Finished difference Result 287 states and 706 transitions. [2020-01-16 18:04:01,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:01,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:01,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:01,156 INFO L225 Difference]: With dead ends: 287 [2020-01-16 18:04:01,156 INFO L226 Difference]: Without dead ends: 273 [2020-01-16 18:04:01,156 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:01,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-01-16 18:04:01,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 190. [2020-01-16 18:04:01,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-01-16 18:04:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 552 transitions. [2020-01-16 18:04:01,160 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 552 transitions. Word has length 19 [2020-01-16 18:04:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:01,160 INFO L478 AbstractCegarLoop]: Abstraction has 190 states and 552 transitions. [2020-01-16 18:04:01,160 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:01,160 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 552 transitions. [2020-01-16 18:04:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:01,161 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:01,161 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:01,161 INFO L426 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:01,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:01,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1013538314, now seen corresponding path program 308 times [2020-01-16 18:04:01,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:01,161 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42595639] [2020-01-16 18:04:01,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:01,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42595639] [2020-01-16 18:04:01,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:01,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:01,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406405106] [2020-01-16 18:04:01,349 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:01,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:01,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:01,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:01,349 INFO L87 Difference]: Start difference. First operand 190 states and 552 transitions. Second operand 8 states. [2020-01-16 18:04:01,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:01,433 INFO L93 Difference]: Finished difference Result 283 states and 695 transitions. [2020-01-16 18:04:01,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:01,434 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:01,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:01,435 INFO L225 Difference]: With dead ends: 283 [2020-01-16 18:04:01,435 INFO L226 Difference]: Without dead ends: 271 [2020-01-16 18:04:01,435 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:01,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-01-16 18:04:01,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 188. [2020-01-16 18:04:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-01-16 18:04:01,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 548 transitions. [2020-01-16 18:04:01,440 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 548 transitions. Word has length 19 [2020-01-16 18:04:01,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:01,440 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 548 transitions. [2020-01-16 18:04:01,440 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:01,440 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 548 transitions. [2020-01-16 18:04:01,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:01,440 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:01,440 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:01,440 INFO L426 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:01,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:01,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1246071542, now seen corresponding path program 309 times [2020-01-16 18:04:01,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:01,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355255942] [2020-01-16 18:04:01,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:01,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355255942] [2020-01-16 18:04:01,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:01,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:01,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350859660] [2020-01-16 18:04:01,633 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:01,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:01,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:01,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:01,633 INFO L87 Difference]: Start difference. First operand 188 states and 548 transitions. Second operand 8 states. [2020-01-16 18:04:01,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:01,711 INFO L93 Difference]: Finished difference Result 279 states and 688 transitions. [2020-01-16 18:04:01,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:01,712 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:01,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:01,712 INFO L225 Difference]: With dead ends: 279 [2020-01-16 18:04:01,713 INFO L226 Difference]: Without dead ends: 265 [2020-01-16 18:04:01,713 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:01,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-01-16 18:04:01,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 190. [2020-01-16 18:04:01,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-01-16 18:04:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 551 transitions. [2020-01-16 18:04:01,717 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 551 transitions. Word has length 19 [2020-01-16 18:04:01,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:01,717 INFO L478 AbstractCegarLoop]: Abstraction has 190 states and 551 transitions. [2020-01-16 18:04:01,717 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:01,718 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 551 transitions. [2020-01-16 18:04:01,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:01,718 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:01,718 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:01,718 INFO L426 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:01,718 INFO L82 PathProgramCache]: Analyzing trace with hash -125941712, now seen corresponding path program 310 times [2020-01-16 18:04:01,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:01,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944117238] [2020-01-16 18:04:01,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:01,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944117238] [2020-01-16 18:04:01,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:01,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:01,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702083289] [2020-01-16 18:04:01,913 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:01,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:01,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:01,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:01,913 INFO L87 Difference]: Start difference. First operand 190 states and 551 transitions. Second operand 8 states. [2020-01-16 18:04:01,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:01,988 INFO L93 Difference]: Finished difference Result 266 states and 668 transitions. [2020-01-16 18:04:01,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:01,988 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:01,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:01,989 INFO L225 Difference]: With dead ends: 266 [2020-01-16 18:04:01,989 INFO L226 Difference]: Without dead ends: 254 [2020-01-16 18:04:01,989 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:01,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-01-16 18:04:01,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 188. [2020-01-16 18:04:01,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-01-16 18:04:01,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 547 transitions. [2020-01-16 18:04:01,993 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 547 transitions. Word has length 19 [2020-01-16 18:04:01,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:01,993 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 547 transitions. [2020-01-16 18:04:01,993 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:01,993 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 547 transitions. [2020-01-16 18:04:01,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:01,994 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:01,994 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:01,994 INFO L426 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:01,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:01,994 INFO L82 PathProgramCache]: Analyzing trace with hash 651556204, now seen corresponding path program 311 times [2020-01-16 18:04:01,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:01,994 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076851224] [2020-01-16 18:04:01,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:02,200 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076851224] [2020-01-16 18:04:02,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:02,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:02,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82333457] [2020-01-16 18:04:02,201 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:02,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:02,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:02,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:02,202 INFO L87 Difference]: Start difference. First operand 188 states and 547 transitions. Second operand 8 states. [2020-01-16 18:04:02,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:02,286 INFO L93 Difference]: Finished difference Result 265 states and 666 transitions. [2020-01-16 18:04:02,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:02,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:02,287 INFO L225 Difference]: With dead ends: 265 [2020-01-16 18:04:02,287 INFO L226 Difference]: Without dead ends: 255 [2020-01-16 18:04:02,288 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:02,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-01-16 18:04:02,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 189. [2020-01-16 18:04:02,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:04:02,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 548 transitions. [2020-01-16 18:04:02,292 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 548 transitions. Word has length 19 [2020-01-16 18:04:02,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:02,292 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 548 transitions. [2020-01-16 18:04:02,292 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:02,292 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 548 transitions. [2020-01-16 18:04:02,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:02,292 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:02,292 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:02,293 INFO L426 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:02,293 INFO L82 PathProgramCache]: Analyzing trace with hash 411913866, now seen corresponding path program 312 times [2020-01-16 18:04:02,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:02,293 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899136028] [2020-01-16 18:04:02,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:02,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:02,497 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899136028] [2020-01-16 18:04:02,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:02,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:02,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237303412] [2020-01-16 18:04:02,498 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:02,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:02,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:02,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:02,499 INFO L87 Difference]: Start difference. First operand 189 states and 548 transitions. Second operand 8 states. [2020-01-16 18:04:02,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:02,570 INFO L93 Difference]: Finished difference Result 254 states and 653 transitions. [2020-01-16 18:04:02,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:02,570 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:02,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:02,571 INFO L225 Difference]: With dead ends: 254 [2020-01-16 18:04:02,571 INFO L226 Difference]: Without dead ends: 239 [2020-01-16 18:04:02,572 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:02,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-01-16 18:04:02,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 184. [2020-01-16 18:04:02,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-01-16 18:04:02,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 540 transitions. [2020-01-16 18:04:02,575 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 540 transitions. Word has length 19 [2020-01-16 18:04:02,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:02,576 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 540 transitions. [2020-01-16 18:04:02,576 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:02,576 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 540 transitions. [2020-01-16 18:04:02,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:02,576 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:02,576 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:02,576 INFO L426 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:02,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:02,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2756816, now seen corresponding path program 313 times [2020-01-16 18:04:02,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:02,577 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947440855] [2020-01-16 18:04:02,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:02,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947440855] [2020-01-16 18:04:02,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:02,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:02,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012884077] [2020-01-16 18:04:02,764 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:02,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:02,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:02,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:02,764 INFO L87 Difference]: Start difference. First operand 184 states and 540 transitions. Second operand 8 states. [2020-01-16 18:04:02,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:02,826 INFO L93 Difference]: Finished difference Result 315 states and 778 transitions. [2020-01-16 18:04:02,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:02,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:02,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:02,828 INFO L225 Difference]: With dead ends: 315 [2020-01-16 18:04:02,828 INFO L226 Difference]: Without dead ends: 299 [2020-01-16 18:04:02,828 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:02,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-01-16 18:04:02,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 191. [2020-01-16 18:04:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-01-16 18:04:02,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 558 transitions. [2020-01-16 18:04:02,833 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 558 transitions. Word has length 19 [2020-01-16 18:04:02,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:02,833 INFO L478 AbstractCegarLoop]: Abstraction has 191 states and 558 transitions. [2020-01-16 18:04:02,833 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:02,833 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 558 transitions. [2020-01-16 18:04:02,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:02,834 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:02,834 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:02,834 INFO L426 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:02,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:02,834 INFO L82 PathProgramCache]: Analyzing trace with hash 2140483934, now seen corresponding path program 314 times [2020-01-16 18:04:02,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:02,834 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788747894] [2020-01-16 18:04:02,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:03,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:03,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788747894] [2020-01-16 18:04:03,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:03,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:03,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967446988] [2020-01-16 18:04:03,021 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:03,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:03,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:03,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:03,021 INFO L87 Difference]: Start difference. First operand 191 states and 558 transitions. Second operand 8 states. [2020-01-16 18:04:03,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:03,110 INFO L93 Difference]: Finished difference Result 309 states and 763 transitions. [2020-01-16 18:04:03,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:03,110 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:03,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:03,111 INFO L225 Difference]: With dead ends: 309 [2020-01-16 18:04:03,111 INFO L226 Difference]: Without dead ends: 296 [2020-01-16 18:04:03,111 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:03,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-01-16 18:04:03,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 188. [2020-01-16 18:04:03,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-01-16 18:04:03,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 552 transitions. [2020-01-16 18:04:03,117 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 552 transitions. Word has length 19 [2020-01-16 18:04:03,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:03,117 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 552 transitions. [2020-01-16 18:04:03,117 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:03,117 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 552 transitions. [2020-01-16 18:04:03,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:03,118 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:03,118 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:03,118 INFO L426 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:03,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:03,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1603194670, now seen corresponding path program 315 times [2020-01-16 18:04:03,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:03,118 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142231669] [2020-01-16 18:04:03,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:03,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142231669] [2020-01-16 18:04:03,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:03,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:03,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125148178] [2020-01-16 18:04:03,310 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:03,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:03,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:03,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:03,310 INFO L87 Difference]: Start difference. First operand 188 states and 552 transitions. Second operand 8 states. [2020-01-16 18:04:03,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:03,372 INFO L93 Difference]: Finished difference Result 315 states and 776 transitions. [2020-01-16 18:04:03,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:03,372 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:03,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:03,373 INFO L225 Difference]: With dead ends: 315 [2020-01-16 18:04:03,373 INFO L226 Difference]: Without dead ends: 299 [2020-01-16 18:04:03,374 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:03,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-01-16 18:04:03,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 191. [2020-01-16 18:04:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-01-16 18:04:03,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 556 transitions. [2020-01-16 18:04:03,378 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 556 transitions. Word has length 19 [2020-01-16 18:04:03,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:03,379 INFO L478 AbstractCegarLoop]: Abstraction has 191 states and 556 transitions. [2020-01-16 18:04:03,379 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:03,379 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 556 transitions. [2020-01-16 18:04:03,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:03,379 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:03,379 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:03,379 INFO L426 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:03,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:03,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1344136444, now seen corresponding path program 316 times [2020-01-16 18:04:03,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:03,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169444166] [2020-01-16 18:04:03,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:03,576 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169444166] [2020-01-16 18:04:03,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:03,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:03,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129256664] [2020-01-16 18:04:03,577 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:03,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:03,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:03,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:03,577 INFO L87 Difference]: Start difference. First operand 191 states and 556 transitions. Second operand 8 states. [2020-01-16 18:04:03,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:03,645 INFO L93 Difference]: Finished difference Result 309 states and 761 transitions. [2020-01-16 18:04:03,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:03,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:03,646 INFO L225 Difference]: With dead ends: 309 [2020-01-16 18:04:03,646 INFO L226 Difference]: Without dead ends: 296 [2020-01-16 18:04:03,647 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:03,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-01-16 18:04:03,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 188. [2020-01-16 18:04:03,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-01-16 18:04:03,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 550 transitions. [2020-01-16 18:04:03,650 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 550 transitions. Word has length 19 [2020-01-16 18:04:03,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:03,651 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 550 transitions. [2020-01-16 18:04:03,651 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:03,651 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 550 transitions. [2020-01-16 18:04:03,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:03,651 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:03,651 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:03,651 INFO L426 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:03,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:03,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1710392530, now seen corresponding path program 317 times [2020-01-16 18:04:03,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:03,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463750941] [2020-01-16 18:04:03,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:03,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:03,853 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463750941] [2020-01-16 18:04:03,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:03,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:03,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303546690] [2020-01-16 18:04:03,854 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:03,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:03,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:03,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:03,854 INFO L87 Difference]: Start difference. First operand 188 states and 550 transitions. Second operand 8 states. [2020-01-16 18:04:03,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:03,948 INFO L93 Difference]: Finished difference Result 301 states and 745 transitions. [2020-01-16 18:04:03,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:03,948 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:03,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:03,949 INFO L225 Difference]: With dead ends: 301 [2020-01-16 18:04:03,949 INFO L226 Difference]: Without dead ends: 291 [2020-01-16 18:04:03,949 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:03,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-01-16 18:04:03,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 189. [2020-01-16 18:04:03,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:04:03,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 551 transitions. [2020-01-16 18:04:03,955 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 551 transitions. Word has length 19 [2020-01-16 18:04:03,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:03,955 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 551 transitions. [2020-01-16 18:04:03,955 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:03,955 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 551 transitions. [2020-01-16 18:04:03,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:03,956 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:03,956 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:03,956 INFO L426 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:03,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:03,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1470750192, now seen corresponding path program 318 times [2020-01-16 18:04:03,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:03,956 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861609695] [2020-01-16 18:04:03,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:04,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:04,163 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861609695] [2020-01-16 18:04:04,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:04,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:04,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724828892] [2020-01-16 18:04:04,163 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:04,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:04,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:04,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:04,164 INFO L87 Difference]: Start difference. First operand 189 states and 551 transitions. Second operand 8 states. [2020-01-16 18:04:04,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:04,235 INFO L93 Difference]: Finished difference Result 301 states and 744 transitions. [2020-01-16 18:04:04,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:04,236 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:04,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:04,236 INFO L225 Difference]: With dead ends: 301 [2020-01-16 18:04:04,237 INFO L226 Difference]: Without dead ends: 288 [2020-01-16 18:04:04,237 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:04,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-01-16 18:04:04,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 186. [2020-01-16 18:04:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-01-16 18:04:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 546 transitions. [2020-01-16 18:04:04,242 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 546 transitions. Word has length 19 [2020-01-16 18:04:04,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:04,242 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 546 transitions. [2020-01-16 18:04:04,242 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:04,242 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 546 transitions. [2020-01-16 18:04:04,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:04,242 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:04,242 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:04,242 INFO L426 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:04,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:04,243 INFO L82 PathProgramCache]: Analyzing trace with hash -445655956, now seen corresponding path program 319 times [2020-01-16 18:04:04,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:04,243 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786214655] [2020-01-16 18:04:04,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:04,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786214655] [2020-01-16 18:04:04,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:04,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:04,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002886710] [2020-01-16 18:04:04,418 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:04,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:04,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:04,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:04,419 INFO L87 Difference]: Start difference. First operand 186 states and 546 transitions. Second operand 8 states. [2020-01-16 18:04:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:04,479 INFO L93 Difference]: Finished difference Result 314 states and 773 transitions. [2020-01-16 18:04:04,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:04,479 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:04,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:04,480 INFO L225 Difference]: With dead ends: 314 [2020-01-16 18:04:04,480 INFO L226 Difference]: Without dead ends: 298 [2020-01-16 18:04:04,480 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:04,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-01-16 18:04:04,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 192. [2020-01-16 18:04:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-01-16 18:04:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 560 transitions. [2020-01-16 18:04:04,485 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 560 transitions. Word has length 19 [2020-01-16 18:04:04,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:04,485 INFO L478 AbstractCegarLoop]: Abstraction has 192 states and 560 transitions. [2020-01-16 18:04:04,485 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:04,485 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 560 transitions. [2020-01-16 18:04:04,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:04,485 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:04,485 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:04,485 INFO L426 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:04,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:04,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1697584794, now seen corresponding path program 320 times [2020-01-16 18:04:04,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:04,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765261701] [2020-01-16 18:04:04,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:04,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765261701] [2020-01-16 18:04:04,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:04,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:04,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067190184] [2020-01-16 18:04:04,667 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:04,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:04,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:04,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:04,667 INFO L87 Difference]: Start difference. First operand 192 states and 560 transitions. Second operand 8 states. [2020-01-16 18:04:04,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:04,760 INFO L93 Difference]: Finished difference Result 308 states and 758 transitions. [2020-01-16 18:04:04,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:04,760 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:04,761 INFO L225 Difference]: With dead ends: 308 [2020-01-16 18:04:04,761 INFO L226 Difference]: Without dead ends: 295 [2020-01-16 18:04:04,761 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:04,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-01-16 18:04:04,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 189. [2020-01-16 18:04:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:04:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 553 transitions. [2020-01-16 18:04:04,765 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 553 transitions. Word has length 19 [2020-01-16 18:04:04,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:04,766 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 553 transitions. [2020-01-16 18:04:04,766 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:04,766 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 553 transitions. [2020-01-16 18:04:04,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:04,766 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:04,766 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:04,766 INFO L426 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:04,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:04,766 INFO L82 PathProgramCache]: Analyzing trace with hash -952002222, now seen corresponding path program 321 times [2020-01-16 18:04:04,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:04,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786363064] [2020-01-16 18:04:04,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:04,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786363064] [2020-01-16 18:04:04,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:04,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:04,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888425472] [2020-01-16 18:04:04,950 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:04,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:04,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:04,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:04,950 INFO L87 Difference]: Start difference. First operand 189 states and 553 transitions. Second operand 8 states. [2020-01-16 18:04:05,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:05,026 INFO L93 Difference]: Finished difference Result 320 states and 787 transitions. [2020-01-16 18:04:05,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:05,026 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:05,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:05,027 INFO L225 Difference]: With dead ends: 320 [2020-01-16 18:04:05,027 INFO L226 Difference]: Without dead ends: 304 [2020-01-16 18:04:05,027 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:05,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-01-16 18:04:05,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 195. [2020-01-16 18:04:05,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-01-16 18:04:05,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2020-01-16 18:04:05,032 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 19 [2020-01-16 18:04:05,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:05,032 INFO L478 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2020-01-16 18:04:05,032 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:05,032 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2020-01-16 18:04:05,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:05,032 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:05,032 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:05,032 INFO L426 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:05,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:05,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1928206972, now seen corresponding path program 322 times [2020-01-16 18:04:05,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:05,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323500072] [2020-01-16 18:04:05,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:05,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323500072] [2020-01-16 18:04:05,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:05,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:05,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956012262] [2020-01-16 18:04:05,217 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:05,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:05,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:05,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:05,217 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand 8 states. [2020-01-16 18:04:05,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:05,313 INFO L93 Difference]: Finished difference Result 317 states and 776 transitions. [2020-01-16 18:04:05,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:05,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:05,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:05,314 INFO L225 Difference]: With dead ends: 317 [2020-01-16 18:04:05,314 INFO L226 Difference]: Without dead ends: 298 [2020-01-16 18:04:05,315 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:05,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-01-16 18:04:05,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 189. [2020-01-16 18:04:05,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:04:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 550 transitions. [2020-01-16 18:04:05,319 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 550 transitions. Word has length 19 [2020-01-16 18:04:05,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:05,319 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 550 transitions. [2020-01-16 18:04:05,319 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:05,319 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 550 transitions. [2020-01-16 18:04:05,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:05,319 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:05,320 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:05,320 INFO L426 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:05,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:05,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1813226296, now seen corresponding path program 323 times [2020-01-16 18:04:05,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:05,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431537670] [2020-01-16 18:04:05,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:05,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:05,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431537670] [2020-01-16 18:04:05,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:05,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:05,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057353367] [2020-01-16 18:04:05,497 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:05,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:05,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:05,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:05,497 INFO L87 Difference]: Start difference. First operand 189 states and 550 transitions. Second operand 8 states. [2020-01-16 18:04:05,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:05,583 INFO L93 Difference]: Finished difference Result 304 states and 748 transitions. [2020-01-16 18:04:05,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:05,583 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:05,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:05,584 INFO L225 Difference]: With dead ends: 304 [2020-01-16 18:04:05,584 INFO L226 Difference]: Without dead ends: 294 [2020-01-16 18:04:05,584 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:05,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-01-16 18:04:05,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 191. [2020-01-16 18:04:05,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-01-16 18:04:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 553 transitions. [2020-01-16 18:04:05,589 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 553 transitions. Word has length 19 [2020-01-16 18:04:05,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:05,589 INFO L478 AbstractCegarLoop]: Abstraction has 191 states and 553 transitions. [2020-01-16 18:04:05,589 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:05,589 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 553 transitions. [2020-01-16 18:04:05,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:05,589 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:05,589 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:05,590 INFO L426 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:05,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:05,590 INFO L82 PathProgramCache]: Analyzing trace with hash 84178962, now seen corresponding path program 324 times [2020-01-16 18:04:05,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:05,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838619628] [2020-01-16 18:04:05,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:05,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838619628] [2020-01-16 18:04:05,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:05,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:05,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700511881] [2020-01-16 18:04:05,828 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:05,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:05,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:05,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:05,829 INFO L87 Difference]: Start difference. First operand 191 states and 553 transitions. Second operand 8 states. [2020-01-16 18:04:05,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:05,945 INFO L93 Difference]: Finished difference Result 307 states and 753 transitions. [2020-01-16 18:04:05,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:05,945 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:05,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:05,946 INFO L225 Difference]: With dead ends: 307 [2020-01-16 18:04:05,947 INFO L226 Difference]: Without dead ends: 289 [2020-01-16 18:04:05,947 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:05,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-01-16 18:04:05,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 186. [2020-01-16 18:04:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-01-16 18:04:05,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 544 transitions. [2020-01-16 18:04:05,954 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 544 transitions. Word has length 19 [2020-01-16 18:04:05,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:05,955 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 544 transitions. [2020-01-16 18:04:05,955 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:05,955 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 544 transitions. [2020-01-16 18:04:05,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:05,956 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:05,956 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:05,956 INFO L426 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:05,957 INFO L82 PathProgramCache]: Analyzing trace with hash -120059732, now seen corresponding path program 325 times [2020-01-16 18:04:05,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:05,957 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184983274] [2020-01-16 18:04:05,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:06,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184983274] [2020-01-16 18:04:06,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:06,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:06,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096961492] [2020-01-16 18:04:06,158 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:06,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:06,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:06,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:06,158 INFO L87 Difference]: Start difference. First operand 186 states and 544 transitions. Second operand 8 states. [2020-01-16 18:04:06,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:06,221 INFO L93 Difference]: Finished difference Result 311 states and 761 transitions. [2020-01-16 18:04:06,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:06,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:06,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:06,222 INFO L225 Difference]: With dead ends: 311 [2020-01-16 18:04:06,222 INFO L226 Difference]: Without dead ends: 295 [2020-01-16 18:04:06,223 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:06,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-01-16 18:04:06,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 192. [2020-01-16 18:04:06,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-01-16 18:04:06,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 558 transitions. [2020-01-16 18:04:06,227 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 558 transitions. Word has length 19 [2020-01-16 18:04:06,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:06,228 INFO L478 AbstractCegarLoop]: Abstraction has 192 states and 558 transitions. [2020-01-16 18:04:06,228 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:06,228 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 558 transitions. [2020-01-16 18:04:06,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:06,228 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:06,228 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:06,228 INFO L426 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:06,229 INFO L82 PathProgramCache]: Analyzing trace with hash 138998494, now seen corresponding path program 326 times [2020-01-16 18:04:06,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:06,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086794944] [2020-01-16 18:04:06,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:06,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086794944] [2020-01-16 18:04:06,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:06,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:06,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373816916] [2020-01-16 18:04:06,418 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:06,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:06,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:06,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:06,419 INFO L87 Difference]: Start difference. First operand 192 states and 558 transitions. Second operand 8 states. [2020-01-16 18:04:06,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:06,488 INFO L93 Difference]: Finished difference Result 305 states and 746 transitions. [2020-01-16 18:04:06,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:06,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:06,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:06,490 INFO L225 Difference]: With dead ends: 305 [2020-01-16 18:04:06,490 INFO L226 Difference]: Without dead ends: 292 [2020-01-16 18:04:06,490 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:06,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-01-16 18:04:06,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 189. [2020-01-16 18:04:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:04:06,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 551 transitions. [2020-01-16 18:04:06,494 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 551 transitions. Word has length 19 [2020-01-16 18:04:06,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:06,495 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 551 transitions. [2020-01-16 18:04:06,495 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:06,495 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 551 transitions. [2020-01-16 18:04:06,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:06,495 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:06,495 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:06,495 INFO L426 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:06,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:06,495 INFO L82 PathProgramCache]: Analyzing trace with hash 974031856, now seen corresponding path program 327 times [2020-01-16 18:04:06,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:06,496 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749187234] [2020-01-16 18:04:06,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:06,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749187234] [2020-01-16 18:04:06,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:06,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:06,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753278793] [2020-01-16 18:04:06,690 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:06,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:06,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:06,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:06,690 INFO L87 Difference]: Start difference. First operand 189 states and 551 transitions. Second operand 8 states. [2020-01-16 18:04:06,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:06,763 INFO L93 Difference]: Finished difference Result 311 states and 758 transitions. [2020-01-16 18:04:06,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:06,763 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:06,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:06,764 INFO L225 Difference]: With dead ends: 311 [2020-01-16 18:04:06,764 INFO L226 Difference]: Without dead ends: 295 [2020-01-16 18:04:06,764 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:06,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-01-16 18:04:06,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 195. [2020-01-16 18:04:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-01-16 18:04:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 562 transitions. [2020-01-16 18:04:06,769 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 562 transitions. Word has length 19 [2020-01-16 18:04:06,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:06,770 INFO L478 AbstractCegarLoop]: Abstraction has 195 states and 562 transitions. [2020-01-16 18:04:06,770 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:06,770 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 562 transitions. [2020-01-16 18:04:06,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:06,770 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:06,770 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:06,770 INFO L426 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:06,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:06,770 INFO L82 PathProgramCache]: Analyzing trace with hash -2172894, now seen corresponding path program 328 times [2020-01-16 18:04:06,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:06,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973075734] [2020-01-16 18:04:06,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:06,957 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973075734] [2020-01-16 18:04:06,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:06,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:06,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809961451] [2020-01-16 18:04:06,958 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:06,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:06,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:06,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:06,958 INFO L87 Difference]: Start difference. First operand 195 states and 562 transitions. Second operand 8 states. [2020-01-16 18:04:07,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:07,047 INFO L93 Difference]: Finished difference Result 308 states and 747 transitions. [2020-01-16 18:04:07,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:07,048 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:07,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:07,048 INFO L225 Difference]: With dead ends: 308 [2020-01-16 18:04:07,048 INFO L226 Difference]: Without dead ends: 289 [2020-01-16 18:04:07,049 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:07,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-01-16 18:04:07,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 189. [2020-01-16 18:04:07,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:04:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 548 transitions. [2020-01-16 18:04:07,053 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 548 transitions. Word has length 19 [2020-01-16 18:04:07,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:07,054 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 548 transitions. [2020-01-16 18:04:07,054 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:07,054 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 548 transitions. [2020-01-16 18:04:07,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:07,054 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:07,054 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:07,054 INFO L426 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:07,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:07,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1309572854, now seen corresponding path program 329 times [2020-01-16 18:04:07,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:07,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14270449] [2020-01-16 18:04:07,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:07,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14270449] [2020-01-16 18:04:07,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:07,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:07,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526848588] [2020-01-16 18:04:07,247 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:07,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:07,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:07,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:07,248 INFO L87 Difference]: Start difference. First operand 189 states and 548 transitions. Second operand 8 states. [2020-01-16 18:04:07,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:07,319 INFO L93 Difference]: Finished difference Result 295 states and 719 transitions. [2020-01-16 18:04:07,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:07,319 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:07,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:07,320 INFO L225 Difference]: With dead ends: 295 [2020-01-16 18:04:07,320 INFO L226 Difference]: Without dead ends: 285 [2020-01-16 18:04:07,320 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:07,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-01-16 18:04:07,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 191. [2020-01-16 18:04:07,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-01-16 18:04:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 551 transitions. [2020-01-16 18:04:07,324 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 551 transitions. Word has length 19 [2020-01-16 18:04:07,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:07,324 INFO L478 AbstractCegarLoop]: Abstraction has 191 states and 551 transitions. [2020-01-16 18:04:07,324 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:07,324 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 551 transitions. [2020-01-16 18:04:07,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:07,325 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:07,325 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:07,325 INFO L426 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:07,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:07,325 INFO L82 PathProgramCache]: Analyzing trace with hash 179832142, now seen corresponding path program 330 times [2020-01-16 18:04:07,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:07,325 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655531720] [2020-01-16 18:04:07,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:07,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:07,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655531720] [2020-01-16 18:04:07,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:07,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:07,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018955435] [2020-01-16 18:04:07,517 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:07,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:07,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:07,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:07,518 INFO L87 Difference]: Start difference. First operand 191 states and 551 transitions. Second operand 8 states. [2020-01-16 18:04:07,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:07,601 INFO L93 Difference]: Finished difference Result 293 states and 714 transitions. [2020-01-16 18:04:07,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:07,601 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:07,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:07,602 INFO L225 Difference]: With dead ends: 293 [2020-01-16 18:04:07,602 INFO L226 Difference]: Without dead ends: 275 [2020-01-16 18:04:07,602 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:07,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-01-16 18:04:07,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 186. [2020-01-16 18:04:07,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-01-16 18:04:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 542 transitions. [2020-01-16 18:04:07,606 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 542 transitions. Word has length 19 [2020-01-16 18:04:07,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:07,606 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 542 transitions. [2020-01-16 18:04:07,606 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:07,606 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 542 transitions. [2020-01-16 18:04:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:07,606 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:07,607 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:07,607 INFO L426 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:07,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:07,607 INFO L82 PathProgramCache]: Analyzing trace with hash -245646298, now seen corresponding path program 331 times [2020-01-16 18:04:07,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:07,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892549166] [2020-01-16 18:04:07,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:07,818 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892549166] [2020-01-16 18:04:07,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:07,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:07,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207873440] [2020-01-16 18:04:07,818 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:07,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:07,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:07,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:07,819 INFO L87 Difference]: Start difference. First operand 186 states and 542 transitions. Second operand 8 states. [2020-01-16 18:04:07,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:07,905 INFO L93 Difference]: Finished difference Result 283 states and 694 transitions. [2020-01-16 18:04:07,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:07,905 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:07,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:07,906 INFO L225 Difference]: With dead ends: 283 [2020-01-16 18:04:07,906 INFO L226 Difference]: Without dead ends: 273 [2020-01-16 18:04:07,906 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:07,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-01-16 18:04:07,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 188. [2020-01-16 18:04:07,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-01-16 18:04:07,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 546 transitions. [2020-01-16 18:04:07,910 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 546 transitions. Word has length 19 [2020-01-16 18:04:07,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:07,910 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 546 transitions. [2020-01-16 18:04:07,910 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:07,910 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 546 transitions. [2020-01-16 18:04:07,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:07,911 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:07,911 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:07,911 INFO L426 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:07,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:07,911 INFO L82 PathProgramCache]: Analyzing trace with hash -485288636, now seen corresponding path program 332 times [2020-01-16 18:04:07,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:07,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871537568] [2020-01-16 18:04:07,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:08,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871537568] [2020-01-16 18:04:08,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:08,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:08,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328844246] [2020-01-16 18:04:08,115 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:08,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:08,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:08,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:08,115 INFO L87 Difference]: Start difference. First operand 188 states and 546 transitions. Second operand 8 states. [2020-01-16 18:04:08,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:08,177 INFO L93 Difference]: Finished difference Result 283 states and 693 transitions. [2020-01-16 18:04:08,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:08,177 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:08,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:08,178 INFO L225 Difference]: With dead ends: 283 [2020-01-16 18:04:08,178 INFO L226 Difference]: Without dead ends: 272 [2020-01-16 18:04:08,178 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:08,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-01-16 18:04:08,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 187. [2020-01-16 18:04:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-01-16 18:04:08,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 544 transitions. [2020-01-16 18:04:08,182 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 544 transitions. Word has length 19 [2020-01-16 18:04:08,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:08,182 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 544 transitions. [2020-01-16 18:04:08,182 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 544 transitions. [2020-01-16 18:04:08,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:08,183 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:08,183 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:08,183 INFO L426 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:08,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:08,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1318731678, now seen corresponding path program 333 times [2020-01-16 18:04:08,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:08,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888157206] [2020-01-16 18:04:08,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:08,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888157206] [2020-01-16 18:04:08,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:08,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:08,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794041684] [2020-01-16 18:04:08,370 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:08,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:08,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:08,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:08,370 INFO L87 Difference]: Start difference. First operand 187 states and 544 transitions. Second operand 8 states. [2020-01-16 18:04:08,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:08,455 INFO L93 Difference]: Finished difference Result 280 states and 688 transitions. [2020-01-16 18:04:08,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:08,456 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:08,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:08,456 INFO L225 Difference]: With dead ends: 280 [2020-01-16 18:04:08,456 INFO L226 Difference]: Without dead ends: 270 [2020-01-16 18:04:08,457 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:08,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-01-16 18:04:08,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 189. [2020-01-16 18:04:08,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:04:08,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 547 transitions. [2020-01-16 18:04:08,461 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 547 transitions. Word has length 19 [2020-01-16 18:04:08,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:08,462 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 547 transitions. [2020-01-16 18:04:08,462 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:08,462 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 547 transitions. [2020-01-16 18:04:08,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:08,462 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:08,462 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:08,462 INFO L426 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:08,462 INFO L82 PathProgramCache]: Analyzing trace with hash -363752674, now seen corresponding path program 334 times [2020-01-16 18:04:08,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:08,463 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546877614] [2020-01-16 18:04:08,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:08,651 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546877614] [2020-01-16 18:04:08,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:08,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:08,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523665218] [2020-01-16 18:04:08,651 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:08,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:08,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:08,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:08,652 INFO L87 Difference]: Start difference. First operand 189 states and 547 transitions. Second operand 8 states. [2020-01-16 18:04:08,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:08,734 INFO L93 Difference]: Finished difference Result 283 states and 693 transitions. [2020-01-16 18:04:08,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:08,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:08,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:08,735 INFO L225 Difference]: With dead ends: 283 [2020-01-16 18:04:08,735 INFO L226 Difference]: Without dead ends: 268 [2020-01-16 18:04:08,735 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:08,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-01-16 18:04:08,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 187. [2020-01-16 18:04:08,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-01-16 18:04:08,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 543 transitions. [2020-01-16 18:04:08,739 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 543 transitions. Word has length 19 [2020-01-16 18:04:08,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:08,739 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 543 transitions. [2020-01-16 18:04:08,739 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:08,739 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 543 transitions. [2020-01-16 18:04:08,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:08,740 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:08,740 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:08,740 INFO L426 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:08,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:08,740 INFO L82 PathProgramCache]: Analyzing trace with hash 52566942, now seen corresponding path program 335 times [2020-01-16 18:04:08,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:08,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762712244] [2020-01-16 18:04:08,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:08,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762712244] [2020-01-16 18:04:08,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:08,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:08,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391104999] [2020-01-16 18:04:08,933 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:08,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:08,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:08,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:08,933 INFO L87 Difference]: Start difference. First operand 187 states and 543 transitions. Second operand 8 states. [2020-01-16 18:04:09,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:09,008 INFO L93 Difference]: Finished difference Result 278 states and 682 transitions. [2020-01-16 18:04:09,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:09,009 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:09,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:09,010 INFO L225 Difference]: With dead ends: 278 [2020-01-16 18:04:09,010 INFO L226 Difference]: Without dead ends: 268 [2020-01-16 18:04:09,010 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:09,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-01-16 18:04:09,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 189. [2020-01-16 18:04:09,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:04:09,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 546 transitions. [2020-01-16 18:04:09,015 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 546 transitions. Word has length 19 [2020-01-16 18:04:09,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:09,015 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 546 transitions. [2020-01-16 18:04:09,015 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:09,015 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 546 transitions. [2020-01-16 18:04:09,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:09,016 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:09,016 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:09,016 INFO L426 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:09,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:09,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1541971938, now seen corresponding path program 336 times [2020-01-16 18:04:09,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:09,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98264418] [2020-01-16 18:04:09,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:09,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:09,222 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98264418] [2020-01-16 18:04:09,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:09,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:09,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850950204] [2020-01-16 18:04:09,222 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:09,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:09,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:09,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:09,223 INFO L87 Difference]: Start difference. First operand 189 states and 546 transitions. Second operand 8 states. [2020-01-16 18:04:09,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:09,304 INFO L93 Difference]: Finished difference Result 276 states and 677 transitions. [2020-01-16 18:04:09,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:09,304 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:09,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:09,305 INFO L225 Difference]: With dead ends: 276 [2020-01-16 18:04:09,305 INFO L226 Difference]: Without dead ends: 258 [2020-01-16 18:04:09,305 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:09,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-01-16 18:04:09,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 184. [2020-01-16 18:04:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-01-16 18:04:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 538 transitions. [2020-01-16 18:04:09,310 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 538 transitions. Word has length 19 [2020-01-16 18:04:09,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:09,310 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 538 transitions. [2020-01-16 18:04:09,310 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 538 transitions. [2020-01-16 18:04:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:09,310 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:09,310 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:09,310 INFO L426 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:09,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:09,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1064346626, now seen corresponding path program 337 times [2020-01-16 18:04:09,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:09,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267234481] [2020-01-16 18:04:09,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:09,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267234481] [2020-01-16 18:04:09,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:09,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:09,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882734870] [2020-01-16 18:04:09,487 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:09,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:09,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:09,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:09,487 INFO L87 Difference]: Start difference. First operand 184 states and 538 transitions. Second operand 8 states. [2020-01-16 18:04:09,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:09,579 INFO L93 Difference]: Finished difference Result 296 states and 736 transitions. [2020-01-16 18:04:09,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:09,580 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:09,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:09,580 INFO L225 Difference]: With dead ends: 296 [2020-01-16 18:04:09,580 INFO L226 Difference]: Without dead ends: 282 [2020-01-16 18:04:09,581 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:09,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-01-16 18:04:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 188. [2020-01-16 18:04:09,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-01-16 18:04:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 548 transitions. [2020-01-16 18:04:09,585 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 548 transitions. Word has length 19 [2020-01-16 18:04:09,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:09,585 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 548 transitions. [2020-01-16 18:04:09,585 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:09,585 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 548 transitions. [2020-01-16 18:04:09,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:09,585 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:09,586 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:09,586 INFO L426 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:09,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:09,586 INFO L82 PathProgramCache]: Analyzing trace with hash 190011300, now seen corresponding path program 338 times [2020-01-16 18:04:09,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:09,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089941055] [2020-01-16 18:04:09,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:09,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:09,782 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089941055] [2020-01-16 18:04:09,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:09,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:09,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459703432] [2020-01-16 18:04:09,782 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:09,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:09,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:09,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:09,783 INFO L87 Difference]: Start difference. First operand 188 states and 548 transitions. Second operand 8 states. [2020-01-16 18:04:09,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:09,877 INFO L93 Difference]: Finished difference Result 292 states and 725 transitions. [2020-01-16 18:04:09,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:09,878 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:09,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:09,879 INFO L225 Difference]: With dead ends: 292 [2020-01-16 18:04:09,879 INFO L226 Difference]: Without dead ends: 280 [2020-01-16 18:04:09,879 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-01-16 18:04:09,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 186. [2020-01-16 18:04:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-01-16 18:04:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 544 transitions. [2020-01-16 18:04:09,884 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 544 transitions. Word has length 19 [2020-01-16 18:04:09,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:09,884 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 544 transitions. [2020-01-16 18:04:09,884 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:09,884 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 544 transitions. [2020-01-16 18:04:09,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:09,884 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:09,884 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:09,884 INFO L426 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:09,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:09,885 INFO L82 PathProgramCache]: Analyzing trace with hash -2069598556, now seen corresponding path program 339 times [2020-01-16 18:04:09,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:09,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057073291] [2020-01-16 18:04:09,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:10,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:10,078 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057073291] [2020-01-16 18:04:10,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:10,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:10,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579745218] [2020-01-16 18:04:10,079 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:10,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:10,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:10,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:10,079 INFO L87 Difference]: Start difference. First operand 186 states and 544 transitions. Second operand 8 states. [2020-01-16 18:04:10,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:10,156 INFO L93 Difference]: Finished difference Result 296 states and 735 transitions. [2020-01-16 18:04:10,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:10,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:10,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:10,157 INFO L225 Difference]: With dead ends: 296 [2020-01-16 18:04:10,157 INFO L226 Difference]: Without dead ends: 282 [2020-01-16 18:04:10,158 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:10,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-01-16 18:04:10,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 188. [2020-01-16 18:04:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-01-16 18:04:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 547 transitions. [2020-01-16 18:04:10,162 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 547 transitions. Word has length 19 [2020-01-16 18:04:10,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:10,162 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 547 transitions. [2020-01-16 18:04:10,162 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:10,162 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 547 transitions. [2020-01-16 18:04:10,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:10,163 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:10,163 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:10,163 INFO L426 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:10,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:10,163 INFO L82 PathProgramCache]: Analyzing trace with hash -949468726, now seen corresponding path program 340 times [2020-01-16 18:04:10,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:10,163 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872483318] [2020-01-16 18:04:10,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:10,350 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872483318] [2020-01-16 18:04:10,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:10,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:10,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560561404] [2020-01-16 18:04:10,351 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:10,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:10,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:10,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:10,352 INFO L87 Difference]: Start difference. First operand 188 states and 547 transitions. Second operand 8 states. [2020-01-16 18:04:10,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:10,416 INFO L93 Difference]: Finished difference Result 292 states and 724 transitions. [2020-01-16 18:04:10,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:10,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:10,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:10,418 INFO L225 Difference]: With dead ends: 292 [2020-01-16 18:04:10,418 INFO L226 Difference]: Without dead ends: 280 [2020-01-16 18:04:10,418 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:10,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-01-16 18:04:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 186. [2020-01-16 18:04:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-01-16 18:04:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 543 transitions. [2020-01-16 18:04:10,423 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 543 transitions. Word has length 19 [2020-01-16 18:04:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:10,423 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 543 transitions. [2020-01-16 18:04:10,423 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:10,423 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 543 transitions. [2020-01-16 18:04:10,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:10,423 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:10,423 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:10,423 INFO L426 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:10,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:10,424 INFO L82 PathProgramCache]: Analyzing trace with hash -171970810, now seen corresponding path program 341 times [2020-01-16 18:04:10,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:10,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328364148] [2020-01-16 18:04:10,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:10,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328364148] [2020-01-16 18:04:10,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:10,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:10,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280223660] [2020-01-16 18:04:10,621 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:10,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:10,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:10,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:10,621 INFO L87 Difference]: Start difference. First operand 186 states and 543 transitions. Second operand 8 states. [2020-01-16 18:04:10,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:10,712 INFO L93 Difference]: Finished difference Result 287 states and 713 transitions. [2020-01-16 18:04:10,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:10,712 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:10,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:10,713 INFO L225 Difference]: With dead ends: 287 [2020-01-16 18:04:10,713 INFO L226 Difference]: Without dead ends: 277 [2020-01-16 18:04:10,713 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:10,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-01-16 18:04:10,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 187. [2020-01-16 18:04:10,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-01-16 18:04:10,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 544 transitions. [2020-01-16 18:04:10,718 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 544 transitions. Word has length 19 [2020-01-16 18:04:10,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:10,718 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 544 transitions. [2020-01-16 18:04:10,718 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:10,718 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 544 transitions. [2020-01-16 18:04:10,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:10,719 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:10,719 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:10,719 INFO L426 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:10,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:10,719 INFO L82 PathProgramCache]: Analyzing trace with hash -411613148, now seen corresponding path program 342 times [2020-01-16 18:04:10,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:10,719 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938100525] [2020-01-16 18:04:10,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:10,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:10,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938100525] [2020-01-16 18:04:10,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:10,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:10,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833047451] [2020-01-16 18:04:10,915 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:10,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:10,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:10,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:10,916 INFO L87 Difference]: Start difference. First operand 187 states and 544 transitions. Second operand 8 states. [2020-01-16 18:04:10,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:10,985 INFO L93 Difference]: Finished difference Result 287 states and 712 transitions. [2020-01-16 18:04:10,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:10,986 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:10,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:10,986 INFO L225 Difference]: With dead ends: 287 [2020-01-16 18:04:10,986 INFO L226 Difference]: Without dead ends: 275 [2020-01-16 18:04:10,987 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:10,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-01-16 18:04:10,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 185. [2020-01-16 18:04:10,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-01-16 18:04:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 541 transitions. [2020-01-16 18:04:10,991 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 541 transitions. Word has length 19 [2020-01-16 18:04:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:10,991 INFO L478 AbstractCegarLoop]: Abstraction has 185 states and 541 transitions. [2020-01-16 18:04:10,991 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:10,991 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 541 transitions. [2020-01-16 18:04:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:10,992 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:10,992 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:10,992 INFO L426 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:10,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:10,992 INFO L82 PathProgramCache]: Analyzing trace with hash -2136529082, now seen corresponding path program 343 times [2020-01-16 18:04:10,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:10,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603207615] [2020-01-16 18:04:10,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:11,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603207615] [2020-01-16 18:04:11,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:11,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:11,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490736274] [2020-01-16 18:04:11,162 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:11,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:11,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:11,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:11,163 INFO L87 Difference]: Start difference. First operand 185 states and 541 transitions. Second operand 8 states. [2020-01-16 18:04:11,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:11,244 INFO L93 Difference]: Finished difference Result 297 states and 737 transitions. [2020-01-16 18:04:11,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:11,245 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:11,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:11,246 INFO L225 Difference]: With dead ends: 297 [2020-01-16 18:04:11,246 INFO L226 Difference]: Without dead ends: 283 [2020-01-16 18:04:11,246 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-01-16 18:04:11,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 189. [2020-01-16 18:04:11,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:04:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 551 transitions. [2020-01-16 18:04:11,250 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 551 transitions. Word has length 19 [2020-01-16 18:04:11,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:11,251 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 551 transitions. [2020-01-16 18:04:11,251 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:11,251 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 551 transitions. [2020-01-16 18:04:11,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:11,251 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:11,251 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:11,251 INFO L426 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:11,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:11,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1284102888, now seen corresponding path program 344 times [2020-01-16 18:04:11,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:11,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172461167] [2020-01-16 18:04:11,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:11,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172461167] [2020-01-16 18:04:11,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:11,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:11,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004986082] [2020-01-16 18:04:11,424 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:11,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:11,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:11,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:11,424 INFO L87 Difference]: Start difference. First operand 189 states and 551 transitions. Second operand 8 states. [2020-01-16 18:04:11,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:11,507 INFO L93 Difference]: Finished difference Result 293 states and 726 transitions. [2020-01-16 18:04:11,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:11,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:11,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:11,508 INFO L225 Difference]: With dead ends: 293 [2020-01-16 18:04:11,508 INFO L226 Difference]: Without dead ends: 281 [2020-01-16 18:04:11,508 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:11,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-01-16 18:04:11,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 187. [2020-01-16 18:04:11,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-01-16 18:04:11,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 546 transitions. [2020-01-16 18:04:11,513 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 546 transitions. Word has length 19 [2020-01-16 18:04:11,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:11,513 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 546 transitions. [2020-01-16 18:04:11,513 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:11,514 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 546 transitions. [2020-01-16 18:04:11,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:11,514 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:11,514 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:11,514 INFO L426 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:11,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:11,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1698016266, now seen corresponding path program 345 times [2020-01-16 18:04:11,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:11,514 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588671498] [2020-01-16 18:04:11,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:11,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588671498] [2020-01-16 18:04:11,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:11,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:11,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022655146] [2020-01-16 18:04:11,692 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:11,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:11,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:11,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:11,692 INFO L87 Difference]: Start difference. First operand 187 states and 546 transitions. Second operand 8 states. [2020-01-16 18:04:11,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:11,789 INFO L93 Difference]: Finished difference Result 303 states and 752 transitions. [2020-01-16 18:04:11,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:11,789 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:11,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:11,789 INFO L225 Difference]: With dead ends: 303 [2020-01-16 18:04:11,789 INFO L226 Difference]: Without dead ends: 289 [2020-01-16 18:04:11,790 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:11,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-01-16 18:04:11,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 192. [2020-01-16 18:04:11,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-01-16 18:04:11,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 556 transitions. [2020-01-16 18:04:11,794 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 556 transitions. Word has length 19 [2020-01-16 18:04:11,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:11,794 INFO L478 AbstractCegarLoop]: Abstraction has 192 states and 556 transitions. [2020-01-16 18:04:11,794 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:11,794 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 556 transitions. [2020-01-16 18:04:11,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:11,794 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:11,794 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:11,794 INFO L426 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:11,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:11,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1628066990, now seen corresponding path program 346 times [2020-01-16 18:04:11,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:11,795 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189679544] [2020-01-16 18:04:11,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:11,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189679544] [2020-01-16 18:04:11,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:11,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:11,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299900619] [2020-01-16 18:04:11,974 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:11,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:11,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:11,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:11,975 INFO L87 Difference]: Start difference. First operand 192 states and 556 transitions. Second operand 8 states. [2020-01-16 18:04:12,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:12,055 INFO L93 Difference]: Finished difference Result 302 states and 745 transitions. [2020-01-16 18:04:12,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:12,055 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:12,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:12,056 INFO L225 Difference]: With dead ends: 302 [2020-01-16 18:04:12,056 INFO L226 Difference]: Without dead ends: 284 [2020-01-16 18:04:12,056 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:12,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-01-16 18:04:12,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 187. [2020-01-16 18:04:12,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-01-16 18:04:12,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 544 transitions. [2020-01-16 18:04:12,061 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 544 transitions. Word has length 19 [2020-01-16 18:04:12,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:12,061 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 544 transitions. [2020-01-16 18:04:12,061 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:12,061 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 544 transitions. [2020-01-16 18:04:12,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:12,061 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:12,061 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:12,062 INFO L426 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:12,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:12,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1237178862, now seen corresponding path program 347 times [2020-01-16 18:04:12,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:12,062 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800749704] [2020-01-16 18:04:12,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:12,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800749704] [2020-01-16 18:04:12,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:12,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:12,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374580589] [2020-01-16 18:04:12,238 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:12,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:12,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:12,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:12,239 INFO L87 Difference]: Start difference. First operand 187 states and 544 transitions. Second operand 8 states. [2020-01-16 18:04:12,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:12,314 INFO L93 Difference]: Finished difference Result 292 states and 722 transitions. [2020-01-16 18:04:12,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:12,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:12,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:12,315 INFO L225 Difference]: With dead ends: 292 [2020-01-16 18:04:12,315 INFO L226 Difference]: Without dead ends: 282 [2020-01-16 18:04:12,316 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:12,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-01-16 18:04:12,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 189. [2020-01-16 18:04:12,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:04:12,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 547 transitions. [2020-01-16 18:04:12,319 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 547 transitions. Word has length 19 [2020-01-16 18:04:12,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:12,319 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 547 transitions. [2020-01-16 18:04:12,319 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:12,319 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 547 transitions. [2020-01-16 18:04:12,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:12,320 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:12,320 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:12,320 INFO L426 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:12,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:12,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1328741100, now seen corresponding path program 348 times [2020-01-16 18:04:12,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:12,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443994715] [2020-01-16 18:04:12,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:12,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:12,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443994715] [2020-01-16 18:04:12,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:12,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:12,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660985563] [2020-01-16 18:04:12,495 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:12,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:12,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:12,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:12,496 INFO L87 Difference]: Start difference. First operand 189 states and 547 transitions. Second operand 8 states. [2020-01-16 18:04:12,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:12,586 INFO L93 Difference]: Finished difference Result 295 states and 727 transitions. [2020-01-16 18:04:12,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:12,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:12,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:12,587 INFO L225 Difference]: With dead ends: 295 [2020-01-16 18:04:12,587 INFO L226 Difference]: Without dead ends: 278 [2020-01-16 18:04:12,588 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:12,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-01-16 18:04:12,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 185. [2020-01-16 18:04:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-01-16 18:04:12,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 540 transitions. [2020-01-16 18:04:12,592 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 540 transitions. Word has length 19 [2020-01-16 18:04:12,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:12,592 INFO L478 AbstractCegarLoop]: Abstraction has 185 states and 540 transitions. [2020-01-16 18:04:12,592 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:12,592 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 540 transitions. [2020-01-16 18:04:12,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:12,593 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:12,593 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:12,593 INFO L426 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:12,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:12,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1719022474, now seen corresponding path program 349 times [2020-01-16 18:04:12,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:12,593 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902241306] [2020-01-16 18:04:12,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:12,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:12,784 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902241306] [2020-01-16 18:04:12,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:12,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:12,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222929013] [2020-01-16 18:04:12,784 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:12,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:12,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:12,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:12,785 INFO L87 Difference]: Start difference. First operand 185 states and 540 transitions. Second operand 8 states. [2020-01-16 18:04:12,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:12,862 INFO L93 Difference]: Finished difference Result 295 states and 729 transitions. [2020-01-16 18:04:12,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:12,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:12,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:12,863 INFO L225 Difference]: With dead ends: 295 [2020-01-16 18:04:12,863 INFO L226 Difference]: Without dead ends: 281 [2020-01-16 18:04:12,863 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:12,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-01-16 18:04:12,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 189. [2020-01-16 18:04:12,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:04:12,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 550 transitions. [2020-01-16 18:04:12,867 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 550 transitions. Word has length 19 [2020-01-16 18:04:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:12,867 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 550 transitions. [2020-01-16 18:04:12,868 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:12,868 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 550 transitions. [2020-01-16 18:04:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:12,868 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:12,868 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:12,868 INFO L426 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:12,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:12,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1455814992, now seen corresponding path program 350 times [2020-01-16 18:04:12,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:12,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515649104] [2020-01-16 18:04:12,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:13,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:13,058 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515649104] [2020-01-16 18:04:13,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:13,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:13,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416986535] [2020-01-16 18:04:13,058 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:13,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:13,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:13,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:13,059 INFO L87 Difference]: Start difference. First operand 189 states and 550 transitions. Second operand 8 states. [2020-01-16 18:04:13,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:13,124 INFO L93 Difference]: Finished difference Result 291 states and 718 transitions. [2020-01-16 18:04:13,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:13,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:13,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:13,125 INFO L225 Difference]: With dead ends: 291 [2020-01-16 18:04:13,125 INFO L226 Difference]: Without dead ends: 279 [2020-01-16 18:04:13,125 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:13,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-01-16 18:04:13,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 187. [2020-01-16 18:04:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-01-16 18:04:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 545 transitions. [2020-01-16 18:04:13,130 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 545 transitions. Word has length 19 [2020-01-16 18:04:13,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:13,130 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 545 transitions. [2020-01-16 18:04:13,130 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:13,131 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 545 transitions. [2020-01-16 18:04:13,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:13,131 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:13,131 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:13,131 INFO L426 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:13,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:13,131 INFO L82 PathProgramCache]: Analyzing trace with hash 645937094, now seen corresponding path program 351 times [2020-01-16 18:04:13,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:13,132 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116540655] [2020-01-16 18:04:13,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:13,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116540655] [2020-01-16 18:04:13,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:13,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:13,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837568737] [2020-01-16 18:04:13,323 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:13,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:13,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:13,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:13,323 INFO L87 Difference]: Start difference. First operand 187 states and 545 transitions. Second operand 8 states. [2020-01-16 18:04:13,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:13,414 INFO L93 Difference]: Finished difference Result 296 states and 729 transitions. [2020-01-16 18:04:13,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:13,414 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:13,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:13,415 INFO L225 Difference]: With dead ends: 296 [2020-01-16 18:04:13,415 INFO L226 Difference]: Without dead ends: 282 [2020-01-16 18:04:13,415 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:13,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-01-16 18:04:13,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 192. [2020-01-16 18:04:13,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-01-16 18:04:13,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2020-01-16 18:04:13,420 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 19 [2020-01-16 18:04:13,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:13,420 INFO L478 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2020-01-16 18:04:13,420 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:13,420 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2020-01-16 18:04:13,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:13,420 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:13,421 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:13,421 INFO L426 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:13,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:13,421 INFO L82 PathProgramCache]: Analyzing trace with hash 3880176, now seen corresponding path program 352 times [2020-01-16 18:04:13,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:13,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258340306] [2020-01-16 18:04:13,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:13,606 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258340306] [2020-01-16 18:04:13,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:13,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:13,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091330841] [2020-01-16 18:04:13,606 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:13,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:13,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:13,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:13,607 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand 8 states. [2020-01-16 18:04:13,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:13,689 INFO L93 Difference]: Finished difference Result 295 states and 722 transitions. [2020-01-16 18:04:13,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:13,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:13,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:13,690 INFO L225 Difference]: With dead ends: 295 [2020-01-16 18:04:13,690 INFO L226 Difference]: Without dead ends: 277 [2020-01-16 18:04:13,690 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:13,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-01-16 18:04:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 187. [2020-01-16 18:04:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-01-16 18:04:13,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 543 transitions. [2020-01-16 18:04:13,694 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 543 transitions. Word has length 19 [2020-01-16 18:04:13,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:13,694 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 543 transitions. [2020-01-16 18:04:13,694 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:13,695 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 543 transitions. [2020-01-16 18:04:13,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:13,695 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:13,695 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:13,695 INFO L426 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:13,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:13,695 INFO L82 PathProgramCache]: Analyzing trace with hash -380103836, now seen corresponding path program 353 times [2020-01-16 18:04:13,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:13,695 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573231448] [2020-01-16 18:04:13,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:13,890 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573231448] [2020-01-16 18:04:13,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:13,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:13,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557301328] [2020-01-16 18:04:13,890 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:13,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:13,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:13,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:13,891 INFO L87 Difference]: Start difference. First operand 187 states and 543 transitions. Second operand 8 states. [2020-01-16 18:04:13,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:13,949 INFO L93 Difference]: Finished difference Result 285 states and 699 transitions. [2020-01-16 18:04:13,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:13,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:13,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:13,950 INFO L225 Difference]: With dead ends: 285 [2020-01-16 18:04:13,950 INFO L226 Difference]: Without dead ends: 275 [2020-01-16 18:04:13,950 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-01-16 18:04:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 189. [2020-01-16 18:04:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-01-16 18:04:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 546 transitions. [2020-01-16 18:04:13,955 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 546 transitions. Word has length 19 [2020-01-16 18:04:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:13,955 INFO L478 AbstractCegarLoop]: Abstraction has 189 states and 546 transitions. [2020-01-16 18:04:13,955 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 546 transitions. [2020-01-16 18:04:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:13,956 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:13,956 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:13,956 INFO L426 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:13,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:13,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1109301160, now seen corresponding path program 354 times [2020-01-16 18:04:13,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:13,956 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946251225] [2020-01-16 18:04:13,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:14,141 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946251225] [2020-01-16 18:04:14,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:14,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:14,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126260865] [2020-01-16 18:04:14,141 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:14,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:14,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:14,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:14,142 INFO L87 Difference]: Start difference. First operand 189 states and 546 transitions. Second operand 8 states. [2020-01-16 18:04:14,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:14,226 INFO L93 Difference]: Finished difference Result 283 states and 694 transitions. [2020-01-16 18:04:14,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:14,226 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:14,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:14,227 INFO L225 Difference]: With dead ends: 283 [2020-01-16 18:04:14,227 INFO L226 Difference]: Without dead ends: 266 [2020-01-16 18:04:14,228 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:14,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-01-16 18:04:14,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 185. [2020-01-16 18:04:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-01-16 18:04:14,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 539 transitions. [2020-01-16 18:04:14,232 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 539 transitions. Word has length 19 [2020-01-16 18:04:14,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:14,232 INFO L478 AbstractCegarLoop]: Abstraction has 185 states and 539 transitions. [2020-01-16 18:04:14,232 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:14,232 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 539 transitions. [2020-01-16 18:04:14,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:14,232 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:14,232 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:14,232 INFO L426 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:14,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:14,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1184663342, now seen corresponding path program 355 times [2020-01-16 18:04:14,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:14,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222279918] [2020-01-16 18:04:14,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:14,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222279918] [2020-01-16 18:04:14,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:14,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:14,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814437747] [2020-01-16 18:04:14,436 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:14,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:14,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:14,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:14,437 INFO L87 Difference]: Start difference. First operand 185 states and 539 transitions. Second operand 8 states. [2020-01-16 18:04:14,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:14,525 INFO L93 Difference]: Finished difference Result 277 states and 681 transitions. [2020-01-16 18:04:14,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:14,526 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:14,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:14,526 INFO L225 Difference]: With dead ends: 277 [2020-01-16 18:04:14,526 INFO L226 Difference]: Without dead ends: 267 [2020-01-16 18:04:14,527 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:14,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-01-16 18:04:14,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 187. [2020-01-16 18:04:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-01-16 18:04:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 543 transitions. [2020-01-16 18:04:14,532 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 543 transitions. Word has length 19 [2020-01-16 18:04:14,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:14,532 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 543 transitions. [2020-01-16 18:04:14,532 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:14,532 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 543 transitions. [2020-01-16 18:04:14,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:14,532 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:14,533 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:14,533 INFO L426 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:14,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:14,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1424305680, now seen corresponding path program 356 times [2020-01-16 18:04:14,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:14,533 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818371917] [2020-01-16 18:04:14,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:14,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818371917] [2020-01-16 18:04:14,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:14,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:14,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659746506] [2020-01-16 18:04:14,737 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:14,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:14,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:14,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:14,737 INFO L87 Difference]: Start difference. First operand 187 states and 543 transitions. Second operand 8 states. [2020-01-16 18:04:14,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:14,796 INFO L93 Difference]: Finished difference Result 277 states and 680 transitions. [2020-01-16 18:04:14,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:14,796 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:14,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:14,797 INFO L225 Difference]: With dead ends: 277 [2020-01-16 18:04:14,797 INFO L226 Difference]: Without dead ends: 266 [2020-01-16 18:04:14,797 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:14,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-01-16 18:04:14,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 186. [2020-01-16 18:04:14,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-01-16 18:04:14,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 541 transitions. [2020-01-16 18:04:14,802 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 541 transitions. Word has length 19 [2020-01-16 18:04:14,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:14,803 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 541 transitions. [2020-01-16 18:04:14,803 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:14,803 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 541 transitions. [2020-01-16 18:04:14,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:14,803 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:14,803 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:14,803 INFO L426 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:14,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:14,803 INFO L82 PathProgramCache]: Analyzing trace with hash 2037218574, now seen corresponding path program 357 times [2020-01-16 18:04:14,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:14,804 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990079498] [2020-01-16 18:04:14,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:14,988 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990079498] [2020-01-16 18:04:14,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:14,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:14,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079850850] [2020-01-16 18:04:14,989 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:14,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:14,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:14,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:14,989 INFO L87 Difference]: Start difference. First operand 186 states and 541 transitions. Second operand 8 states. [2020-01-16 18:04:15,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:15,065 INFO L93 Difference]: Finished difference Result 274 states and 675 transitions. [2020-01-16 18:04:15,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:15,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:15,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:15,067 INFO L225 Difference]: With dead ends: 274 [2020-01-16 18:04:15,067 INFO L226 Difference]: Without dead ends: 264 [2020-01-16 18:04:15,067 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:15,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-01-16 18:04:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 188. [2020-01-16 18:04:15,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-01-16 18:04:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 544 transitions. [2020-01-16 18:04:15,070 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 544 transitions. Word has length 19 [2020-01-16 18:04:15,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:15,070 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 544 transitions. [2020-01-16 18:04:15,071 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:15,071 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 544 transitions. [2020-01-16 18:04:15,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:15,071 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:15,071 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:15,071 INFO L426 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:15,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:15,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1302769718, now seen corresponding path program 358 times [2020-01-16 18:04:15,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:15,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498627523] [2020-01-16 18:04:15,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:15,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:15,262 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498627523] [2020-01-16 18:04:15,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:15,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:15,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333754168] [2020-01-16 18:04:15,263 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:15,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:15,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:15,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:15,264 INFO L87 Difference]: Start difference. First operand 188 states and 544 transitions. Second operand 8 states. [2020-01-16 18:04:15,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:15,347 INFO L93 Difference]: Finished difference Result 277 states and 680 transitions. [2020-01-16 18:04:15,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:15,347 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:15,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:15,348 INFO L225 Difference]: With dead ends: 277 [2020-01-16 18:04:15,348 INFO L226 Difference]: Without dead ends: 262 [2020-01-16 18:04:15,348 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:15,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-01-16 18:04:15,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 186. [2020-01-16 18:04:15,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-01-16 18:04:15,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 540 transitions. [2020-01-16 18:04:15,353 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 540 transitions. Word has length 19 [2020-01-16 18:04:15,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:15,353 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 540 transitions. [2020-01-16 18:04:15,353 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:15,353 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 540 transitions. [2020-01-16 18:04:15,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:15,353 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:15,353 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:15,354 INFO L426 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:15,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:15,354 INFO L82 PathProgramCache]: Analyzing trace with hash -886450102, now seen corresponding path program 359 times [2020-01-16 18:04:15,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:15,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663449916] [2020-01-16 18:04:15,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:15,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663449916] [2020-01-16 18:04:15,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:15,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:15,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47090808] [2020-01-16 18:04:15,550 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:15,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:15,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:15,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:15,550 INFO L87 Difference]: Start difference. First operand 186 states and 540 transitions. Second operand 8 states. [2020-01-16 18:04:15,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:15,622 INFO L93 Difference]: Finished difference Result 272 states and 669 transitions. [2020-01-16 18:04:15,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:15,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:15,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:15,623 INFO L225 Difference]: With dead ends: 272 [2020-01-16 18:04:15,624 INFO L226 Difference]: Without dead ends: 262 [2020-01-16 18:04:15,624 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:15,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-01-16 18:04:15,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 188. [2020-01-16 18:04:15,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-01-16 18:04:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 543 transitions. [2020-01-16 18:04:15,628 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 543 transitions. Word has length 19 [2020-01-16 18:04:15,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:15,628 INFO L478 AbstractCegarLoop]: Abstraction has 188 states and 543 transitions. [2020-01-16 18:04:15,629 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:15,629 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 543 transitions. [2020-01-16 18:04:15,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:15,629 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:15,629 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:15,629 INFO L426 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:15,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:15,629 INFO L82 PathProgramCache]: Analyzing trace with hash 602954894, now seen corresponding path program 360 times [2020-01-16 18:04:15,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:15,630 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537016518] [2020-01-16 18:04:15,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:15,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537016518] [2020-01-16 18:04:15,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:15,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:15,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239513982] [2020-01-16 18:04:15,818 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:15,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:15,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:15,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:15,818 INFO L87 Difference]: Start difference. First operand 188 states and 543 transitions. Second operand 8 states. [2020-01-16 18:04:15,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:15,899 INFO L93 Difference]: Finished difference Result 270 states and 664 transitions. [2020-01-16 18:04:15,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:15,900 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:15,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:15,900 INFO L225 Difference]: With dead ends: 270 [2020-01-16 18:04:15,900 INFO L226 Difference]: Without dead ends: 249 [2020-01-16 18:04:15,901 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:15,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-01-16 18:04:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 180. [2020-01-16 18:04:15,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-01-16 18:04:15,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 530 transitions. [2020-01-16 18:04:15,905 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 530 transitions. Word has length 19 [2020-01-16 18:04:15,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:15,905 INFO L478 AbstractCegarLoop]: Abstraction has 180 states and 530 transitions. [2020-01-16 18:04:15,905 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:15,906 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 530 transitions. [2020-01-16 18:04:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:15,906 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:15,906 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:15,906 INFO L426 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:15,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:15,906 INFO L82 PathProgramCache]: Analyzing trace with hash 234329704, now seen corresponding path program 361 times [2020-01-16 18:04:15,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:15,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368343597] [2020-01-16 18:04:15,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:16,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:16,117 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368343597] [2020-01-16 18:04:16,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:16,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:16,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396961829] [2020-01-16 18:04:16,118 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:16,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:16,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:16,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:16,118 INFO L87 Difference]: Start difference. First operand 180 states and 530 transitions. Second operand 8 states. [2020-01-16 18:04:16,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:16,178 INFO L93 Difference]: Finished difference Result 319 states and 780 transitions. [2020-01-16 18:04:16,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:16,179 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:16,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:16,179 INFO L225 Difference]: With dead ends: 319 [2020-01-16 18:04:16,179 INFO L226 Difference]: Without dead ends: 303 [2020-01-16 18:04:16,180 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:16,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-01-16 18:04:16,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 192. [2020-01-16 18:04:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-01-16 18:04:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 556 transitions. [2020-01-16 18:04:16,184 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 556 transitions. Word has length 19 [2020-01-16 18:04:16,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:16,184 INFO L478 AbstractCegarLoop]: Abstraction has 192 states and 556 transitions. [2020-01-16 18:04:16,184 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:16,184 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 556 transitions. [2020-01-16 18:04:16,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:16,185 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:16,185 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:16,185 INFO L426 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:16,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:16,185 INFO L82 PathProgramCache]: Analyzing trace with hash 608980890, now seen corresponding path program 362 times [2020-01-16 18:04:16,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:16,185 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441122773] [2020-01-16 18:04:16,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:16,387 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441122773] [2020-01-16 18:04:16,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:16,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:16,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180443681] [2020-01-16 18:04:16,388 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:16,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:16,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:16,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:16,388 INFO L87 Difference]: Start difference. First operand 192 states and 556 transitions. Second operand 8 states. [2020-01-16 18:04:16,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:16,472 INFO L93 Difference]: Finished difference Result 317 states and 770 transitions. [2020-01-16 18:04:16,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:16,473 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:16,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:16,474 INFO L225 Difference]: With dead ends: 317 [2020-01-16 18:04:16,474 INFO L226 Difference]: Without dead ends: 295 [2020-01-16 18:04:16,474 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:16,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-01-16 18:04:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 184. [2020-01-16 18:04:16,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-01-16 18:04:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 538 transitions. [2020-01-16 18:04:16,479 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 538 transitions. Word has length 19 [2020-01-16 18:04:16,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:16,479 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 538 transitions. [2020-01-16 18:04:16,479 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:16,479 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 538 transitions. [2020-01-16 18:04:16,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:16,479 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:16,479 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:16,480 INFO L426 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:16,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:16,480 INFO L82 PathProgramCache]: Analyzing trace with hash 438930786, now seen corresponding path program 363 times [2020-01-16 18:04:16,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:16,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673739468] [2020-01-16 18:04:16,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:16,688 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673739468] [2020-01-16 18:04:16,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:16,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:16,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081335691] [2020-01-16 18:04:16,689 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:16,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:16,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:16,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:16,689 INFO L87 Difference]: Start difference. First operand 184 states and 538 transitions. Second operand 8 states. [2020-01-16 18:04:16,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:16,747 INFO L93 Difference]: Finished difference Result 310 states and 753 transitions. [2020-01-16 18:04:16,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:16,747 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:16,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:16,748 INFO L225 Difference]: With dead ends: 310 [2020-01-16 18:04:16,748 INFO L226 Difference]: Without dead ends: 294 [2020-01-16 18:04:16,748 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:16,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-01-16 18:04:16,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 187. [2020-01-16 18:04:16,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-01-16 18:04:16,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 542 transitions. [2020-01-16 18:04:16,754 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 542 transitions. Word has length 19 [2020-01-16 18:04:16,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:16,754 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 542 transitions. [2020-01-16 18:04:16,754 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:16,754 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 542 transitions. [2020-01-16 18:04:16,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:16,755 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:16,755 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:16,755 INFO L426 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:16,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:16,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1712795760, now seen corresponding path program 364 times [2020-01-16 18:04:16,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:16,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229610949] [2020-01-16 18:04:16,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:16,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229610949] [2020-01-16 18:04:16,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:16,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:16,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67726783] [2020-01-16 18:04:16,959 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:16,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:16,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:16,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:16,959 INFO L87 Difference]: Start difference. First operand 187 states and 542 transitions. Second operand 8 states. [2020-01-16 18:04:17,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:17,039 INFO L93 Difference]: Finished difference Result 304 states and 738 transitions. [2020-01-16 18:04:17,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:17,039 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:17,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:17,040 INFO L225 Difference]: With dead ends: 304 [2020-01-16 18:04:17,040 INFO L226 Difference]: Without dead ends: 291 [2020-01-16 18:04:17,040 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:17,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-01-16 18:04:17,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 184. [2020-01-16 18:04:17,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-01-16 18:04:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 535 transitions. [2020-01-16 18:04:17,044 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 535 transitions. Word has length 19 [2020-01-16 18:04:17,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:17,044 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 535 transitions. [2020-01-16 18:04:17,044 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:17,044 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 535 transitions. [2020-01-16 18:04:17,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:17,044 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:17,045 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:17,045 INFO L426 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:17,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:17,045 INFO L82 PathProgramCache]: Analyzing trace with hash -959085248, now seen corresponding path program 365 times [2020-01-16 18:04:17,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:17,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627789153] [2020-01-16 18:04:17,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:17,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627789153] [2020-01-16 18:04:17,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:17,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:17,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513180809] [2020-01-16 18:04:17,242 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:17,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:17,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:17,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:17,242 INFO L87 Difference]: Start difference. First operand 184 states and 535 transitions. Second operand 8 states. [2020-01-16 18:04:17,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:17,318 INFO L93 Difference]: Finished difference Result 305 states and 742 transitions. [2020-01-16 18:04:17,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:17,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:17,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:17,319 INFO L225 Difference]: With dead ends: 305 [2020-01-16 18:04:17,319 INFO L226 Difference]: Without dead ends: 291 [2020-01-16 18:04:17,319 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:17,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-01-16 18:04:17,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 186. [2020-01-16 18:04:17,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-01-16 18:04:17,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 538 transitions. [2020-01-16 18:04:17,323 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 538 transitions. Word has length 19 [2020-01-16 18:04:17,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:17,324 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 538 transitions. [2020-01-16 18:04:17,324 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:17,324 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 538 transitions. [2020-01-16 18:04:17,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:17,324 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:17,324 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:17,324 INFO L426 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:17,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:17,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1833420574, now seen corresponding path program 366 times [2020-01-16 18:04:17,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:17,325 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593457092] [2020-01-16 18:04:17,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:17,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593457092] [2020-01-16 18:04:17,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:17,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:17,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537913713] [2020-01-16 18:04:17,521 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:17,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:17,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:17,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:17,521 INFO L87 Difference]: Start difference. First operand 186 states and 538 transitions. Second operand 8 states. [2020-01-16 18:04:17,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:17,602 INFO L93 Difference]: Finished difference Result 301 states and 731 transitions. [2020-01-16 18:04:17,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:17,602 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:17,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:17,603 INFO L225 Difference]: With dead ends: 301 [2020-01-16 18:04:17,603 INFO L226 Difference]: Without dead ends: 285 [2020-01-16 18:04:17,603 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:17,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-01-16 18:04:17,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 180. [2020-01-16 18:04:17,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-01-16 18:04:17,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 527 transitions. [2020-01-16 18:04:17,607 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 527 transitions. Word has length 19 [2020-01-16 18:04:17,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:17,607 INFO L478 AbstractCegarLoop]: Abstraction has 180 states and 527 transitions. [2020-01-16 18:04:17,607 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:17,608 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 527 transitions. [2020-01-16 18:04:17,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:17,608 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:17,608 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:17,608 INFO L426 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:17,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:17,608 INFO L82 PathProgramCache]: Analyzing trace with hash -188156022, now seen corresponding path program 367 times [2020-01-16 18:04:17,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:17,608 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072352494] [2020-01-16 18:04:17,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:17,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:17,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072352494] [2020-01-16 18:04:17,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:17,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:17,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586197404] [2020-01-16 18:04:17,826 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:17,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:17,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:17,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:17,827 INFO L87 Difference]: Start difference. First operand 180 states and 527 transitions. Second operand 8 states. [2020-01-16 18:04:17,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:17,892 INFO L93 Difference]: Finished difference Result 319 states and 777 transitions. [2020-01-16 18:04:17,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:17,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:17,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:17,893 INFO L225 Difference]: With dead ends: 319 [2020-01-16 18:04:17,893 INFO L226 Difference]: Without dead ends: 303 [2020-01-16 18:04:17,893 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:17,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-01-16 18:04:17,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 192. [2020-01-16 18:04:17,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-01-16 18:04:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 553 transitions. [2020-01-16 18:04:17,897 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 553 transitions. Word has length 19 [2020-01-16 18:04:17,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:17,898 INFO L478 AbstractCegarLoop]: Abstraction has 192 states and 553 transitions. [2020-01-16 18:04:17,898 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:17,898 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 553 transitions. [2020-01-16 18:04:17,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:17,898 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:17,898 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:17,898 INFO L426 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:17,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:17,899 INFO L82 PathProgramCache]: Analyzing trace with hash 186495164, now seen corresponding path program 368 times [2020-01-16 18:04:17,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:17,899 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143108181] [2020-01-16 18:04:17,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:18,105 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143108181] [2020-01-16 18:04:18,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:18,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:18,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110345749] [2020-01-16 18:04:18,105 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:18,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:18,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:18,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:18,106 INFO L87 Difference]: Start difference. First operand 192 states and 553 transitions. Second operand 8 states. [2020-01-16 18:04:18,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:18,180 INFO L93 Difference]: Finished difference Result 317 states and 767 transitions. [2020-01-16 18:04:18,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:18,181 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:18,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:18,181 INFO L225 Difference]: With dead ends: 317 [2020-01-16 18:04:18,182 INFO L226 Difference]: Without dead ends: 295 [2020-01-16 18:04:18,182 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:18,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-01-16 18:04:18,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 184. [2020-01-16 18:04:18,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-01-16 18:04:18,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 535 transitions. [2020-01-16 18:04:18,186 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 535 transitions. Word has length 19 [2020-01-16 18:04:18,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:18,186 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 535 transitions. [2020-01-16 18:04:18,186 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:18,186 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 535 transitions. [2020-01-16 18:04:18,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:18,187 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:18,187 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:18,187 INFO L426 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:18,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:18,187 INFO L82 PathProgramCache]: Analyzing trace with hash 342041284, now seen corresponding path program 369 times [2020-01-16 18:04:18,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:18,187 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50394028] [2020-01-16 18:04:18,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:18,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:18,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50394028] [2020-01-16 18:04:18,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:18,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:18,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48908821] [2020-01-16 18:04:18,404 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:18,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:18,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:18,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:18,405 INFO L87 Difference]: Start difference. First operand 184 states and 535 transitions. Second operand 8 states. [2020-01-16 18:04:18,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:18,463 INFO L93 Difference]: Finished difference Result 310 states and 750 transitions. [2020-01-16 18:04:18,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:18,463 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:18,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:18,464 INFO L225 Difference]: With dead ends: 310 [2020-01-16 18:04:18,464 INFO L226 Difference]: Without dead ends: 294 [2020-01-16 18:04:18,464 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:18,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-01-16 18:04:18,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 187. [2020-01-16 18:04:18,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-01-16 18:04:18,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 539 transitions. [2020-01-16 18:04:18,469 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 539 transitions. Word has length 19 [2020-01-16 18:04:18,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:18,469 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 539 transitions. [2020-01-16 18:04:18,469 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:18,470 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 539 transitions. [2020-01-16 18:04:18,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:18,470 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:18,470 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:18,470 INFO L426 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:18,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:18,471 INFO L82 PathProgramCache]: Analyzing trace with hash 601099510, now seen corresponding path program 370 times [2020-01-16 18:04:18,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:18,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757315628] [2020-01-16 18:04:18,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:18,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757315628] [2020-01-16 18:04:18,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:18,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:18,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998916481] [2020-01-16 18:04:18,673 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:18,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:18,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:18,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:18,674 INFO L87 Difference]: Start difference. First operand 187 states and 539 transitions. Second operand 8 states. [2020-01-16 18:04:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:18,733 INFO L93 Difference]: Finished difference Result 304 states and 735 transitions. [2020-01-16 18:04:18,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:18,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:18,735 INFO L225 Difference]: With dead ends: 304 [2020-01-16 18:04:18,735 INFO L226 Difference]: Without dead ends: 291 [2020-01-16 18:04:18,735 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:18,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-01-16 18:04:18,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 184. [2020-01-16 18:04:18,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-01-16 18:04:18,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 532 transitions. [2020-01-16 18:04:18,740 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 532 transitions. Word has length 19 [2020-01-16 18:04:18,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:18,741 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 532 transitions. [2020-01-16 18:04:18,741 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 532 transitions. [2020-01-16 18:04:18,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:18,741 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:18,741 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:18,742 INFO L426 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:18,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:18,742 INFO L82 PathProgramCache]: Analyzing trace with hash -2030620292, now seen corresponding path program 371 times [2020-01-16 18:04:18,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:18,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693288514] [2020-01-16 18:04:18,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:18,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693288514] [2020-01-16 18:04:18,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:18,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:18,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794719225] [2020-01-16 18:04:18,946 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:18,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:18,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:18,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:18,947 INFO L87 Difference]: Start difference. First operand 184 states and 532 transitions. Second operand 8 states. [2020-01-16 18:04:19,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:19,031 INFO L93 Difference]: Finished difference Result 305 states and 739 transitions. [2020-01-16 18:04:19,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:19,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:19,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:19,032 INFO L225 Difference]: With dead ends: 305 [2020-01-16 18:04:19,033 INFO L226 Difference]: Without dead ends: 291 [2020-01-16 18:04:19,033 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:19,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-01-16 18:04:19,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 186. [2020-01-16 18:04:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-01-16 18:04:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 535 transitions. [2020-01-16 18:04:19,038 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 535 transitions. Word has length 19 [2020-01-16 18:04:19,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:19,038 INFO L478 AbstractCegarLoop]: Abstraction has 186 states and 535 transitions. [2020-01-16 18:04:19,038 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 535 transitions. [2020-01-16 18:04:19,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:19,038 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:19,038 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:19,038 INFO L426 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:19,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:19,039 INFO L82 PathProgramCache]: Analyzing trace with hash -910490462, now seen corresponding path program 372 times [2020-01-16 18:04:19,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:19,039 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288225494] [2020-01-16 18:04:19,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:19,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288225494] [2020-01-16 18:04:19,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:19,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:19,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052972253] [2020-01-16 18:04:19,246 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:19,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:19,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:19,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:19,246 INFO L87 Difference]: Start difference. First operand 186 states and 535 transitions. Second operand 8 states. [2020-01-16 18:04:19,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:19,312 INFO L93 Difference]: Finished difference Result 301 states and 728 transitions. [2020-01-16 18:04:19,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:19,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:19,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:19,313 INFO L225 Difference]: With dead ends: 301 [2020-01-16 18:04:19,313 INFO L226 Difference]: Without dead ends: 285 [2020-01-16 18:04:19,314 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:19,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-01-16 18:04:19,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 180. [2020-01-16 18:04:19,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-01-16 18:04:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 524 transitions. [2020-01-16 18:04:19,318 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 524 transitions. Word has length 19 [2020-01-16 18:04:19,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:19,318 INFO L478 AbstractCegarLoop]: Abstraction has 180 states and 524 transitions. [2020-01-16 18:04:19,319 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:19,319 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 524 transitions. [2020-01-16 18:04:19,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:19,319 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:19,319 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:19,319 INFO L426 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:19,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:19,319 INFO L82 PathProgramCache]: Analyzing trace with hash -304821912, now seen corresponding path program 373 times [2020-01-16 18:04:19,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:19,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190328780] [2020-01-16 18:04:19,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:19,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:19,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190328780] [2020-01-16 18:04:19,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:19,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:19,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300367236] [2020-01-16 18:04:19,521 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:19,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:19,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:19,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:19,522 INFO L87 Difference]: Start difference. First operand 180 states and 524 transitions. Second operand 8 states. [2020-01-16 18:04:19,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:19,579 INFO L93 Difference]: Finished difference Result 298 states and 719 transitions. [2020-01-16 18:04:19,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:19,580 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:19,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:19,580 INFO L225 Difference]: With dead ends: 298 [2020-01-16 18:04:19,580 INFO L226 Difference]: Without dead ends: 282 [2020-01-16 18:04:19,581 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:19,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-01-16 18:04:19,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 185. [2020-01-16 18:04:19,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-01-16 18:04:19,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 534 transitions. [2020-01-16 18:04:19,585 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 534 transitions. Word has length 19 [2020-01-16 18:04:19,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:19,586 INFO L478 AbstractCegarLoop]: Abstraction has 185 states and 534 transitions. [2020-01-16 18:04:19,586 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:19,586 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 534 transitions. [2020-01-16 18:04:19,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:19,586 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:19,586 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:19,586 INFO L426 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:19,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:19,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1838418838, now seen corresponding path program 374 times [2020-01-16 18:04:19,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:19,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320174419] [2020-01-16 18:04:19,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:19,791 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320174419] [2020-01-16 18:04:19,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:19,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:19,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472289625] [2020-01-16 18:04:19,792 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:19,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:19,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:19,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:19,792 INFO L87 Difference]: Start difference. First operand 185 states and 534 transitions. Second operand 8 states. [2020-01-16 18:04:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:19,878 INFO L93 Difference]: Finished difference Result 292 states and 704 transitions. [2020-01-16 18:04:19,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:19,878 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:19,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:19,879 INFO L225 Difference]: With dead ends: 292 [2020-01-16 18:04:19,879 INFO L226 Difference]: Without dead ends: 279 [2020-01-16 18:04:19,879 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:19,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-01-16 18:04:19,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 182. [2020-01-16 18:04:19,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-01-16 18:04:19,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 528 transitions. [2020-01-16 18:04:19,884 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 528 transitions. Word has length 19 [2020-01-16 18:04:19,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:19,884 INFO L478 AbstractCegarLoop]: Abstraction has 182 states and 528 transitions. [2020-01-16 18:04:19,884 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:19,884 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 528 transitions. [2020-01-16 18:04:19,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:19,885 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:19,885 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:19,885 INFO L426 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:19,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:19,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1905259766, now seen corresponding path program 375 times [2020-01-16 18:04:19,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:19,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105340875] [2020-01-16 18:04:19,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:20,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105340875] [2020-01-16 18:04:20,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:20,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:20,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022757643] [2020-01-16 18:04:20,088 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:20,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:20,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:20,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:20,089 INFO L87 Difference]: Start difference. First operand 182 states and 528 transitions. Second operand 8 states. [2020-01-16 18:04:20,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:20,147 INFO L93 Difference]: Finished difference Result 298 states and 717 transitions. [2020-01-16 18:04:20,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:20,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:20,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:20,149 INFO L225 Difference]: With dead ends: 298 [2020-01-16 18:04:20,149 INFO L226 Difference]: Without dead ends: 282 [2020-01-16 18:04:20,149 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:20,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-01-16 18:04:20,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 185. [2020-01-16 18:04:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-01-16 18:04:20,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 532 transitions. [2020-01-16 18:04:20,153 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 532 transitions. Word has length 19 [2020-01-16 18:04:20,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:20,153 INFO L478 AbstractCegarLoop]: Abstraction has 185 states and 532 transitions. [2020-01-16 18:04:20,153 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 532 transitions. [2020-01-16 18:04:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:20,154 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:20,154 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:20,154 INFO L426 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:20,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:20,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1646201540, now seen corresponding path program 376 times [2020-01-16 18:04:20,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:20,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271866999] [2020-01-16 18:04:20,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:20,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271866999] [2020-01-16 18:04:20,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:20,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:20,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883369350] [2020-01-16 18:04:20,353 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:20,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:20,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:20,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:20,354 INFO L87 Difference]: Start difference. First operand 185 states and 532 transitions. Second operand 8 states. [2020-01-16 18:04:20,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:20,426 INFO L93 Difference]: Finished difference Result 292 states and 702 transitions. [2020-01-16 18:04:20,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:20,427 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:20,428 INFO L225 Difference]: With dead ends: 292 [2020-01-16 18:04:20,428 INFO L226 Difference]: Without dead ends: 279 [2020-01-16 18:04:20,428 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:20,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-01-16 18:04:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 182. [2020-01-16 18:04:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-01-16 18:04:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 526 transitions. [2020-01-16 18:04:20,432 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 526 transitions. Word has length 19 [2020-01-16 18:04:20,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:20,433 INFO L478 AbstractCegarLoop]: Abstraction has 182 states and 526 transitions. [2020-01-16 18:04:20,433 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:20,433 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 526 transitions. [2020-01-16 18:04:20,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:20,433 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:20,433 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:20,433 INFO L426 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:20,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:20,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1408327434, now seen corresponding path program 377 times [2020-01-16 18:04:20,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:20,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651248231] [2020-01-16 18:04:20,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:20,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651248231] [2020-01-16 18:04:20,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:20,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:20,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210199580] [2020-01-16 18:04:20,639 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:20,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:20,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:20,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:20,640 INFO L87 Difference]: Start difference. First operand 182 states and 526 transitions. Second operand 8 states. [2020-01-16 18:04:20,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:20,716 INFO L93 Difference]: Finished difference Result 284 states and 686 transitions. [2020-01-16 18:04:20,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:20,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:20,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:20,717 INFO L225 Difference]: With dead ends: 284 [2020-01-16 18:04:20,717 INFO L226 Difference]: Without dead ends: 274 [2020-01-16 18:04:20,718 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:20,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-01-16 18:04:20,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 183. [2020-01-16 18:04:20,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-01-16 18:04:20,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 527 transitions. [2020-01-16 18:04:20,722 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 527 transitions. Word has length 19 [2020-01-16 18:04:20,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:20,722 INFO L478 AbstractCegarLoop]: Abstraction has 183 states and 527 transitions. [2020-01-16 18:04:20,722 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:20,722 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 527 transitions. [2020-01-16 18:04:20,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:20,723 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:20,723 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:20,723 INFO L426 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:20,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:20,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1168685096, now seen corresponding path program 378 times [2020-01-16 18:04:20,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:20,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752956939] [2020-01-16 18:04:20,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:20,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:20,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752956939] [2020-01-16 18:04:20,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:20,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:20,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953492699] [2020-01-16 18:04:20,939 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:20,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:20,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:20,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:20,939 INFO L87 Difference]: Start difference. First operand 183 states and 527 transitions. Second operand 8 states. [2020-01-16 18:04:21,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:21,003 INFO L93 Difference]: Finished difference Result 284 states and 685 transitions. [2020-01-16 18:04:21,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:21,003 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:21,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:21,004 INFO L225 Difference]: With dead ends: 284 [2020-01-16 18:04:21,004 INFO L226 Difference]: Without dead ends: 271 [2020-01-16 18:04:21,004 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-01-16 18:04:21,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 180. [2020-01-16 18:04:21,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-01-16 18:04:21,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 522 transitions. [2020-01-16 18:04:21,008 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 522 transitions. Word has length 19 [2020-01-16 18:04:21,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:21,009 INFO L478 AbstractCegarLoop]: Abstraction has 180 states and 522 transitions. [2020-01-16 18:04:21,009 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 522 transitions. [2020-01-16 18:04:21,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:21,009 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:21,009 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:21,009 INFO L426 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:21,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:21,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1264971302, now seen corresponding path program 379 times [2020-01-16 18:04:21,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:21,010 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678647846] [2020-01-16 18:04:21,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:21,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678647846] [2020-01-16 18:04:21,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:21,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:21,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816090465] [2020-01-16 18:04:21,215 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:21,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:21,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:21,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:21,215 INFO L87 Difference]: Start difference. First operand 180 states and 522 transitions. Second operand 8 states. [2020-01-16 18:04:21,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:21,300 INFO L93 Difference]: Finished difference Result 288 states and 699 transitions. [2020-01-16 18:04:21,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:21,301 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:21,302 INFO L225 Difference]: With dead ends: 288 [2020-01-16 18:04:21,302 INFO L226 Difference]: Without dead ends: 274 [2020-01-16 18:04:21,302 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:21,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-01-16 18:04:21,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 183. [2020-01-16 18:04:21,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-01-16 18:04:21,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 528 transitions. [2020-01-16 18:04:21,306 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 528 transitions. Word has length 19 [2020-01-16 18:04:21,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:21,306 INFO L478 AbstractCegarLoop]: Abstraction has 183 states and 528 transitions. [2020-01-16 18:04:21,306 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:21,307 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 528 transitions. [2020-01-16 18:04:21,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:21,307 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:21,307 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:21,307 INFO L426 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:21,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:21,308 INFO L82 PathProgramCache]: Analyzing trace with hash -2139306628, now seen corresponding path program 380 times [2020-01-16 18:04:21,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:21,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730583117] [2020-01-16 18:04:21,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:21,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:21,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730583117] [2020-01-16 18:04:21,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:21,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:21,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452314205] [2020-01-16 18:04:21,517 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:21,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:21,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:21,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:21,517 INFO L87 Difference]: Start difference. First operand 183 states and 528 transitions. Second operand 8 states. [2020-01-16 18:04:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:21,591 INFO L93 Difference]: Finished difference Result 284 states and 688 transitions. [2020-01-16 18:04:21,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:21,592 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:21,593 INFO L225 Difference]: With dead ends: 284 [2020-01-16 18:04:21,593 INFO L226 Difference]: Without dead ends: 272 [2020-01-16 18:04:21,594 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:21,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-01-16 18:04:21,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 181. [2020-01-16 18:04:21,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-01-16 18:04:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 524 transitions. [2020-01-16 18:04:21,599 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 524 transitions. Word has length 19 [2020-01-16 18:04:21,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:21,599 INFO L478 AbstractCegarLoop]: Abstraction has 181 states and 524 transitions. [2020-01-16 18:04:21,599 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:21,599 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 524 transitions. [2020-01-16 18:04:21,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:21,599 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:21,600 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:21,600 INFO L426 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:21,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:21,600 INFO L82 PathProgramCache]: Analyzing trace with hash -103949188, now seen corresponding path program 381 times [2020-01-16 18:04:21,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:21,600 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257809133] [2020-01-16 18:04:21,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:21,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257809133] [2020-01-16 18:04:21,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:21,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:21,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711602256] [2020-01-16 18:04:21,807 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:21,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:21,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:21,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:21,807 INFO L87 Difference]: Start difference. First operand 181 states and 524 transitions. Second operand 8 states. [2020-01-16 18:04:21,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:21,878 INFO L93 Difference]: Finished difference Result 288 states and 698 transitions. [2020-01-16 18:04:21,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:21,878 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:21,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:21,879 INFO L225 Difference]: With dead ends: 288 [2020-01-16 18:04:21,879 INFO L226 Difference]: Without dead ends: 274 [2020-01-16 18:04:21,879 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:21,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-01-16 18:04:21,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 183. [2020-01-16 18:04:21,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-01-16 18:04:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 527 transitions. [2020-01-16 18:04:21,884 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 527 transitions. Word has length 19 [2020-01-16 18:04:21,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:21,884 INFO L478 AbstractCegarLoop]: Abstraction has 183 states and 527 transitions. [2020-01-16 18:04:21,884 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:21,884 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 527 transitions. [2020-01-16 18:04:21,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:21,885 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:21,885 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:21,885 INFO L426 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:21,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:21,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1016180642, now seen corresponding path program 382 times [2020-01-16 18:04:21,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:21,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310533913] [2020-01-16 18:04:21,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:22,093 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310533913] [2020-01-16 18:04:22,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:22,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:22,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318508016] [2020-01-16 18:04:22,093 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:22,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:22,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:22,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:22,094 INFO L87 Difference]: Start difference. First operand 183 states and 527 transitions. Second operand 8 states. [2020-01-16 18:04:22,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:22,156 INFO L93 Difference]: Finished difference Result 284 states and 687 transitions. [2020-01-16 18:04:22,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:22,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:22,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:22,157 INFO L225 Difference]: With dead ends: 284 [2020-01-16 18:04:22,157 INFO L226 Difference]: Without dead ends: 272 [2020-01-16 18:04:22,157 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:22,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-01-16 18:04:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 181. [2020-01-16 18:04:22,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-01-16 18:04:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 523 transitions. [2020-01-16 18:04:22,162 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 523 transitions. Word has length 19 [2020-01-16 18:04:22,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:22,162 INFO L478 AbstractCegarLoop]: Abstraction has 181 states and 523 transitions. [2020-01-16 18:04:22,162 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:22,162 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 523 transitions. [2020-01-16 18:04:22,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:22,162 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:22,162 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:22,162 INFO L426 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:22,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:22,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1793678558, now seen corresponding path program 383 times [2020-01-16 18:04:22,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:22,163 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266170968] [2020-01-16 18:04:22,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:22,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266170968] [2020-01-16 18:04:22,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:22,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:22,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256174184] [2020-01-16 18:04:22,371 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:22,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:22,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:22,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:22,372 INFO L87 Difference]: Start difference. First operand 181 states and 523 transitions. Second operand 8 states. [2020-01-16 18:04:22,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:22,451 INFO L93 Difference]: Finished difference Result 279 states and 676 transitions. [2020-01-16 18:04:22,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:22,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:22,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:22,452 INFO L225 Difference]: With dead ends: 279 [2020-01-16 18:04:22,452 INFO L226 Difference]: Without dead ends: 269 [2020-01-16 18:04:22,453 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:22,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-01-16 18:04:22,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 182. [2020-01-16 18:04:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-01-16 18:04:22,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 524 transitions. [2020-01-16 18:04:22,457 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 524 transitions. Word has length 19 [2020-01-16 18:04:22,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:22,457 INFO L478 AbstractCegarLoop]: Abstraction has 182 states and 524 transitions. [2020-01-16 18:04:22,457 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:22,457 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 524 transitions. [2020-01-16 18:04:22,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:22,458 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:22,458 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:22,458 INFO L426 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:22,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:22,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1554036220, now seen corresponding path program 384 times [2020-01-16 18:04:22,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:22,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449037620] [2020-01-16 18:04:22,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:22,679 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449037620] [2020-01-16 18:04:22,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:22,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:22,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709298401] [2020-01-16 18:04:22,680 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:22,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:22,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:22,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:22,681 INFO L87 Difference]: Start difference. First operand 182 states and 524 transitions. Second operand 8 states. [2020-01-16 18:04:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:22,748 INFO L93 Difference]: Finished difference Result 279 states and 675 transitions. [2020-01-16 18:04:22,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:22,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:22,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:22,750 INFO L225 Difference]: With dead ends: 279 [2020-01-16 18:04:22,750 INFO L226 Difference]: Without dead ends: 264 [2020-01-16 18:04:22,750 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:22,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-01-16 18:04:22,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 177. [2020-01-16 18:04:22,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-01-16 18:04:22,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 516 transitions. [2020-01-16 18:04:22,755 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 516 transitions. Word has length 19 [2020-01-16 18:04:22,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:22,755 INFO L478 AbstractCegarLoop]: Abstraction has 177 states and 516 transitions. [2020-01-16 18:04:22,755 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:22,755 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 516 transitions. [2020-01-16 18:04:22,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:22,755 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:22,755 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:22,756 INFO L426 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:22,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:22,756 INFO L82 PathProgramCache]: Analyzing trace with hash 22174086, now seen corresponding path program 385 times [2020-01-16 18:04:22,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:22,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478301705] [2020-01-16 18:04:22,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:22,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:22,954 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478301705] [2020-01-16 18:04:22,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:22,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:22,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444000975] [2020-01-16 18:04:22,954 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:22,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:22,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:22,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:22,955 INFO L87 Difference]: Start difference. First operand 177 states and 516 transitions. Second operand 8 states. [2020-01-16 18:04:23,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:23,014 INFO L93 Difference]: Finished difference Result 321 states and 784 transitions. [2020-01-16 18:04:23,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:23,015 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:23,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:23,015 INFO L225 Difference]: With dead ends: 321 [2020-01-16 18:04:23,016 INFO L226 Difference]: Without dead ends: 305 [2020-01-16 18:04:23,016 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:23,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-01-16 18:04:23,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 185. [2020-01-16 18:04:23,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-01-16 18:04:23,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 530 transitions. [2020-01-16 18:04:23,020 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 530 transitions. Word has length 19 [2020-01-16 18:04:23,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:23,020 INFO L478 AbstractCegarLoop]: Abstraction has 185 states and 530 transitions. [2020-01-16 18:04:23,020 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 530 transitions. [2020-01-16 18:04:23,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:23,020 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:23,021 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:23,021 INFO L426 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:23,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:23,021 INFO L82 PathProgramCache]: Analyzing trace with hash 396825272, now seen corresponding path program 386 times [2020-01-16 18:04:23,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:23,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541576783] [2020-01-16 18:04:23,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:23,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541576783] [2020-01-16 18:04:23,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:23,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:23,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126140173] [2020-01-16 18:04:23,215 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:23,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:23,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:23,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:23,216 INFO L87 Difference]: Start difference. First operand 185 states and 530 transitions. Second operand 8 states. [2020-01-16 18:04:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:23,297 INFO L93 Difference]: Finished difference Result 319 states and 774 transitions. [2020-01-16 18:04:23,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:23,298 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:23,298 INFO L225 Difference]: With dead ends: 319 [2020-01-16 18:04:23,299 INFO L226 Difference]: Without dead ends: 297 [2020-01-16 18:04:23,299 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:23,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-01-16 18:04:23,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 177. [2020-01-16 18:04:23,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-01-16 18:04:23,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 512 transitions. [2020-01-16 18:04:23,304 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 512 transitions. Word has length 19 [2020-01-16 18:04:23,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:23,304 INFO L478 AbstractCegarLoop]: Abstraction has 177 states and 512 transitions. [2020-01-16 18:04:23,304 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:23,304 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 512 transitions. [2020-01-16 18:04:23,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:23,304 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:23,304 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:23,305 INFO L426 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:23,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:23,305 INFO L82 PathProgramCache]: Analyzing trace with hash 226775168, now seen corresponding path program 387 times [2020-01-16 18:04:23,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:23,305 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826125136] [2020-01-16 18:04:23,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:23,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826125136] [2020-01-16 18:04:23,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:23,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:23,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355583888] [2020-01-16 18:04:23,509 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:23,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:23,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:23,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:23,509 INFO L87 Difference]: Start difference. First operand 177 states and 512 transitions. Second operand 8 states. [2020-01-16 18:04:23,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:23,563 INFO L93 Difference]: Finished difference Result 312 states and 757 transitions. [2020-01-16 18:04:23,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:23,564 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:23,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:23,564 INFO L225 Difference]: With dead ends: 312 [2020-01-16 18:04:23,565 INFO L226 Difference]: Without dead ends: 296 [2020-01-16 18:04:23,565 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:23,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-01-16 18:04:23,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 180. [2020-01-16 18:04:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-01-16 18:04:23,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 516 transitions. [2020-01-16 18:04:23,569 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 516 transitions. Word has length 19 [2020-01-16 18:04:23,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:23,570 INFO L478 AbstractCegarLoop]: Abstraction has 180 states and 516 transitions. [2020-01-16 18:04:23,570 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:23,570 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 516 transitions. [2020-01-16 18:04:23,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:23,570 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:23,570 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:23,570 INFO L426 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:23,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:23,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1924951378, now seen corresponding path program 388 times [2020-01-16 18:04:23,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:23,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78148892] [2020-01-16 18:04:23,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:23,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:23,759 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78148892] [2020-01-16 18:04:23,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:23,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:23,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345325384] [2020-01-16 18:04:23,760 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:23,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:23,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:23,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:23,760 INFO L87 Difference]: Start difference. First operand 180 states and 516 transitions. Second operand 8 states. [2020-01-16 18:04:23,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:23,838 INFO L93 Difference]: Finished difference Result 306 states and 742 transitions. [2020-01-16 18:04:23,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:23,838 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:23,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:23,839 INFO L225 Difference]: With dead ends: 306 [2020-01-16 18:04:23,839 INFO L226 Difference]: Without dead ends: 293 [2020-01-16 18:04:23,840 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:23,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-01-16 18:04:23,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 177. [2020-01-16 18:04:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-01-16 18:04:23,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 509 transitions. [2020-01-16 18:04:23,844 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 509 transitions. Word has length 19 [2020-01-16 18:04:23,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:23,844 INFO L478 AbstractCegarLoop]: Abstraction has 177 states and 509 transitions. [2020-01-16 18:04:23,844 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:23,845 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 509 transitions. [2020-01-16 18:04:23,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:23,845 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:23,845 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:23,845 INFO L426 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:23,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:23,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1171240866, now seen corresponding path program 389 times [2020-01-16 18:04:23,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:23,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277176579] [2020-01-16 18:04:23,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:24,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277176579] [2020-01-16 18:04:24,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:24,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:24,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237361472] [2020-01-16 18:04:24,031 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:24,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:24,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:24,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:24,032 INFO L87 Difference]: Start difference. First operand 177 states and 509 transitions. Second operand 8 states. [2020-01-16 18:04:24,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:24,106 INFO L93 Difference]: Finished difference Result 307 states and 746 transitions. [2020-01-16 18:04:24,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:24,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:24,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:24,107 INFO L225 Difference]: With dead ends: 307 [2020-01-16 18:04:24,107 INFO L226 Difference]: Without dead ends: 293 [2020-01-16 18:04:24,107 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:24,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-01-16 18:04:24,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 179. [2020-01-16 18:04:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-01-16 18:04:24,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 512 transitions. [2020-01-16 18:04:24,112 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 512 transitions. Word has length 19 [2020-01-16 18:04:24,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:24,112 INFO L478 AbstractCegarLoop]: Abstraction has 179 states and 512 transitions. [2020-01-16 18:04:24,112 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:24,112 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 512 transitions. [2020-01-16 18:04:24,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:24,112 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:24,112 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:24,113 INFO L426 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:24,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:24,113 INFO L82 PathProgramCache]: Analyzing trace with hash -2045576192, now seen corresponding path program 390 times [2020-01-16 18:04:24,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:24,113 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733205264] [2020-01-16 18:04:24,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:24,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733205264] [2020-01-16 18:04:24,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:24,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:24,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546237531] [2020-01-16 18:04:24,303 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:24,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:24,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:24,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:24,304 INFO L87 Difference]: Start difference. First operand 179 states and 512 transitions. Second operand 8 states. [2020-01-16 18:04:24,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:24,387 INFO L93 Difference]: Finished difference Result 303 states and 735 transitions. [2020-01-16 18:04:24,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:24,387 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:24,388 INFO L225 Difference]: With dead ends: 303 [2020-01-16 18:04:24,388 INFO L226 Difference]: Without dead ends: 287 [2020-01-16 18:04:24,388 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:24,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-01-16 18:04:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 173. [2020-01-16 18:04:24,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-01-16 18:04:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 500 transitions. [2020-01-16 18:04:24,396 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 500 transitions. Word has length 19 [2020-01-16 18:04:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:24,396 INFO L478 AbstractCegarLoop]: Abstraction has 173 states and 500 transitions. [2020-01-16 18:04:24,396 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:24,396 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 500 transitions. [2020-01-16 18:04:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:24,397 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:24,397 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:24,397 INFO L426 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:24,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:24,397 INFO L82 PathProgramCache]: Analyzing trace with hash -822797366, now seen corresponding path program 391 times [2020-01-16 18:04:24,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:24,397 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036634097] [2020-01-16 18:04:24,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:24,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036634097] [2020-01-16 18:04:24,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:24,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:24,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738843736] [2020-01-16 18:04:24,621 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:24,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:24,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:24,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:24,621 INFO L87 Difference]: Start difference. First operand 173 states and 500 transitions. Second operand 8 states. [2020-01-16 18:04:24,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:24,681 INFO L93 Difference]: Finished difference Result 321 states and 787 transitions. [2020-01-16 18:04:24,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:24,681 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:24,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:24,682 INFO L225 Difference]: With dead ends: 321 [2020-01-16 18:04:24,682 INFO L226 Difference]: Without dead ends: 305 [2020-01-16 18:04:24,682 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:24,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-01-16 18:04:24,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 187. [2020-01-16 18:04:24,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-01-16 18:04:24,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 535 transitions. [2020-01-16 18:04:24,687 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 535 transitions. Word has length 19 [2020-01-16 18:04:24,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:24,687 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 535 transitions. [2020-01-16 18:04:24,687 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:24,687 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 535 transitions. [2020-01-16 18:04:24,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:24,687 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:24,688 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:24,688 INFO L426 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:24,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:24,688 INFO L82 PathProgramCache]: Analyzing trace with hash -448146180, now seen corresponding path program 392 times [2020-01-16 18:04:24,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:24,688 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198083770] [2020-01-16 18:04:24,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:24,884 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198083770] [2020-01-16 18:04:24,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:24,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:24,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149219956] [2020-01-16 18:04:24,885 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:24,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:24,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:24,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:24,885 INFO L87 Difference]: Start difference. First operand 187 states and 535 transitions. Second operand 8 states. [2020-01-16 18:04:24,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:24,958 INFO L93 Difference]: Finished difference Result 319 states and 777 transitions. [2020-01-16 18:04:24,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:24,958 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:24,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:24,959 INFO L225 Difference]: With dead ends: 319 [2020-01-16 18:04:24,959 INFO L226 Difference]: Without dead ends: 297 [2020-01-16 18:04:24,959 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:24,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-01-16 18:04:24,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 179. [2020-01-16 18:04:24,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-01-16 18:04:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 515 transitions. [2020-01-16 18:04:24,964 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 515 transitions. Word has length 19 [2020-01-16 18:04:24,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:24,964 INFO L478 AbstractCegarLoop]: Abstraction has 179 states and 515 transitions. [2020-01-16 18:04:24,964 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:24,964 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 515 transitions. [2020-01-16 18:04:24,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:24,964 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:24,964 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:24,964 INFO L426 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:24,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:24,965 INFO L82 PathProgramCache]: Analyzing trace with hash 32996164, now seen corresponding path program 393 times [2020-01-16 18:04:24,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:24,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789222213] [2020-01-16 18:04:24,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:25,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:25,160 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789222213] [2020-01-16 18:04:25,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:25,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:25,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038899202] [2020-01-16 18:04:25,161 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:25,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:25,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:25,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:25,161 INFO L87 Difference]: Start difference. First operand 179 states and 515 transitions. Second operand 8 states. [2020-01-16 18:04:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:25,219 INFO L93 Difference]: Finished difference Result 308 states and 755 transitions. [2020-01-16 18:04:25,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:25,219 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:25,220 INFO L225 Difference]: With dead ends: 308 [2020-01-16 18:04:25,220 INFO L226 Difference]: Without dead ends: 292 [2020-01-16 18:04:25,221 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:25,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-01-16 18:04:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 184. [2020-01-16 18:04:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-01-16 18:04:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 524 transitions. [2020-01-16 18:04:25,226 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 524 transitions. Word has length 19 [2020-01-16 18:04:25,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:25,226 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 524 transitions. [2020-01-16 18:04:25,226 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:25,226 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 524 transitions. [2020-01-16 18:04:25,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:25,226 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:25,226 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:25,226 INFO L426 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:25,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:25,227 INFO L82 PathProgramCache]: Analyzing trace with hash -718065930, now seen corresponding path program 394 times [2020-01-16 18:04:25,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:25,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528849681] [2020-01-16 18:04:25,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:25,416 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528849681] [2020-01-16 18:04:25,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:25,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:25,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931147835] [2020-01-16 18:04:25,417 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:25,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:25,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:25,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:25,417 INFO L87 Difference]: Start difference. First operand 184 states and 524 transitions. Second operand 8 states. [2020-01-16 18:04:25,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:25,495 INFO L93 Difference]: Finished difference Result 295 states and 734 transitions. [2020-01-16 18:04:25,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:25,496 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:25,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:25,497 INFO L225 Difference]: With dead ends: 295 [2020-01-16 18:04:25,497 INFO L226 Difference]: Without dead ends: 278 [2020-01-16 18:04:25,497 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:25,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-01-16 18:04:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 179. [2020-01-16 18:04:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-01-16 18:04:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 510 transitions. [2020-01-16 18:04:25,501 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 510 transitions. Word has length 19 [2020-01-16 18:04:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:25,501 INFO L478 AbstractCegarLoop]: Abstraction has 179 states and 510 transitions. [2020-01-16 18:04:25,501 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 510 transitions. [2020-01-16 18:04:25,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:25,502 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:25,502 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:25,503 INFO L426 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:25,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:25,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1988186406, now seen corresponding path program 395 times [2020-01-16 18:04:25,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:25,504 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806698543] [2020-01-16 18:04:25,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:25,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:25,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806698543] [2020-01-16 18:04:25,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:25,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:25,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956470938] [2020-01-16 18:04:25,692 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:25,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:25,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:25,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:25,693 INFO L87 Difference]: Start difference. First operand 179 states and 510 transitions. Second operand 8 states. [2020-01-16 18:04:25,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:25,774 INFO L93 Difference]: Finished difference Result 305 states and 745 transitions. [2020-01-16 18:04:25,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:25,774 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:25,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:25,775 INFO L225 Difference]: With dead ends: 305 [2020-01-16 18:04:25,775 INFO L226 Difference]: Without dead ends: 291 [2020-01-16 18:04:25,775 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:25,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-01-16 18:04:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 183. [2020-01-16 18:04:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-01-16 18:04:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 518 transitions. [2020-01-16 18:04:25,779 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 518 transitions. Word has length 19 [2020-01-16 18:04:25,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:25,779 INFO L478 AbstractCegarLoop]: Abstraction has 183 states and 518 transitions. [2020-01-16 18:04:25,780 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:25,780 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 518 transitions. [2020-01-16 18:04:25,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:25,780 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:25,780 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:25,780 INFO L426 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:25,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:25,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1988781052, now seen corresponding path program 396 times [2020-01-16 18:04:25,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:25,781 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466935672] [2020-01-16 18:04:25,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:25,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466935672] [2020-01-16 18:04:25,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:25,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:25,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747934948] [2020-01-16 18:04:25,970 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:25,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:25,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:25,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:25,970 INFO L87 Difference]: Start difference. First operand 183 states and 518 transitions. Second operand 8 states. [2020-01-16 18:04:26,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:26,052 INFO L93 Difference]: Finished difference Result 294 states and 728 transitions. [2020-01-16 18:04:26,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:26,052 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:26,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:26,053 INFO L225 Difference]: With dead ends: 294 [2020-01-16 18:04:26,053 INFO L226 Difference]: Without dead ends: 272 [2020-01-16 18:04:26,053 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:26,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-01-16 18:04:26,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 173. [2020-01-16 18:04:26,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-01-16 18:04:26,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 496 transitions. [2020-01-16 18:04:26,058 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 496 transitions. Word has length 19 [2020-01-16 18:04:26,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:26,058 INFO L478 AbstractCegarLoop]: Abstraction has 173 states and 496 transitions. [2020-01-16 18:04:26,058 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:26,058 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 496 transitions. [2020-01-16 18:04:26,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:26,059 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:26,059 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:26,059 INFO L426 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:26,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:26,059 INFO L82 PathProgramCache]: Analyzing trace with hash 986570822, now seen corresponding path program 397 times [2020-01-16 18:04:26,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:26,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866830434] [2020-01-16 18:04:26,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:26,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866830434] [2020-01-16 18:04:26,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:26,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:26,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193103052] [2020-01-16 18:04:26,257 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:26,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:26,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:26,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:26,258 INFO L87 Difference]: Start difference. First operand 173 states and 496 transitions. Second operand 8 states. [2020-01-16 18:04:26,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:26,321 INFO L93 Difference]: Finished difference Result 303 states and 733 transitions. [2020-01-16 18:04:26,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:26,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:26,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:26,322 INFO L225 Difference]: With dead ends: 303 [2020-01-16 18:04:26,322 INFO L226 Difference]: Without dead ends: 287 [2020-01-16 18:04:26,322 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:26,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-01-16 18:04:26,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 179. [2020-01-16 18:04:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-01-16 18:04:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 510 transitions. [2020-01-16 18:04:26,327 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 510 transitions. Word has length 19 [2020-01-16 18:04:26,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:26,327 INFO L478 AbstractCegarLoop]: Abstraction has 179 states and 510 transitions. [2020-01-16 18:04:26,327 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:26,327 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 510 transitions. [2020-01-16 18:04:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:26,328 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:26,328 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:26,328 INFO L426 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:26,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:26,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1165155724, now seen corresponding path program 398 times [2020-01-16 18:04:26,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:26,328 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218108067] [2020-01-16 18:04:26,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:26,537 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218108067] [2020-01-16 18:04:26,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:26,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:26,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74169757] [2020-01-16 18:04:26,538 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:26,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:26,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:26,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:26,538 INFO L87 Difference]: Start difference. First operand 179 states and 510 transitions. Second operand 8 states. [2020-01-16 18:04:26,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:26,620 INFO L93 Difference]: Finished difference Result 297 states and 718 transitions. [2020-01-16 18:04:26,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:26,620 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:26,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:26,621 INFO L225 Difference]: With dead ends: 297 [2020-01-16 18:04:26,621 INFO L226 Difference]: Without dead ends: 284 [2020-01-16 18:04:26,621 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:26,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-01-16 18:04:26,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 176. [2020-01-16 18:04:26,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-01-16 18:04:26,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 503 transitions. [2020-01-16 18:04:26,625 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 503 transitions. Word has length 19 [2020-01-16 18:04:26,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:26,625 INFO L478 AbstractCegarLoop]: Abstraction has 176 states and 503 transitions. [2020-01-16 18:04:26,625 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:26,625 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 503 transitions. [2020-01-16 18:04:26,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:26,626 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:26,626 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:26,626 INFO L426 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:26,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:26,626 INFO L82 PathProgramCache]: Analyzing trace with hash 2080662410, now seen corresponding path program 399 times [2020-01-16 18:04:26,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:26,626 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750235616] [2020-01-16 18:04:26,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:26,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750235616] [2020-01-16 18:04:26,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:26,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:26,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281143291] [2020-01-16 18:04:26,825 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:26,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:26,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:26,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:26,826 INFO L87 Difference]: Start difference. First operand 176 states and 503 transitions. Second operand 8 states. [2020-01-16 18:04:26,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:26,886 INFO L93 Difference]: Finished difference Result 299 states and 727 transitions. [2020-01-16 18:04:26,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:26,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:26,887 INFO L225 Difference]: With dead ends: 299 [2020-01-16 18:04:26,887 INFO L226 Difference]: Without dead ends: 283 [2020-01-16 18:04:26,888 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:26,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-01-16 18:04:26,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 181. [2020-01-16 18:04:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-01-16 18:04:26,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 512 transitions. [2020-01-16 18:04:26,893 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 512 transitions. Word has length 19 [2020-01-16 18:04:26,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:26,893 INFO L478 AbstractCegarLoop]: Abstraction has 181 states and 512 transitions. [2020-01-16 18:04:26,893 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 512 transitions. [2020-01-16 18:04:26,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:26,894 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:26,894 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:26,894 INFO L426 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:26,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:26,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1329600316, now seen corresponding path program 400 times [2020-01-16 18:04:26,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:26,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277322494] [2020-01-16 18:04:26,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:27,094 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277322494] [2020-01-16 18:04:27,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:27,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:27,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810611934] [2020-01-16 18:04:27,094 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:27,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:27,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:27,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:27,095 INFO L87 Difference]: Start difference. First operand 181 states and 512 transitions. Second operand 8 states. [2020-01-16 18:04:27,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:27,176 INFO L93 Difference]: Finished difference Result 286 states and 706 transitions. [2020-01-16 18:04:27,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:27,176 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:27,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:27,177 INFO L225 Difference]: With dead ends: 286 [2020-01-16 18:04:27,177 INFO L226 Difference]: Without dead ends: 269 [2020-01-16 18:04:27,177 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:27,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-01-16 18:04:27,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 176. [2020-01-16 18:04:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-01-16 18:04:27,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 500 transitions. [2020-01-16 18:04:27,181 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 500 transitions. Word has length 19 [2020-01-16 18:04:27,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:27,181 INFO L478 AbstractCegarLoop]: Abstraction has 176 states and 500 transitions. [2020-01-16 18:04:27,181 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:27,181 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 500 transitions. [2020-01-16 18:04:27,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:27,182 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:27,182 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:27,182 INFO L426 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:27,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:27,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1804719824, now seen corresponding path program 401 times [2020-01-16 18:04:27,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:27,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271359070] [2020-01-16 18:04:27,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:27,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271359070] [2020-01-16 18:04:27,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:27,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:27,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867517361] [2020-01-16 18:04:27,374 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:27,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:27,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:27,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:27,374 INFO L87 Difference]: Start difference. First operand 176 states and 500 transitions. Second operand 8 states. [2020-01-16 18:04:27,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:27,447 INFO L93 Difference]: Finished difference Result 290 states and 703 transitions. [2020-01-16 18:04:27,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:27,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:27,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:27,448 INFO L225 Difference]: With dead ends: 290 [2020-01-16 18:04:27,448 INFO L226 Difference]: Without dead ends: 280 [2020-01-16 18:04:27,448 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:27,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-01-16 18:04:27,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 178. [2020-01-16 18:04:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-01-16 18:04:27,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 503 transitions. [2020-01-16 18:04:27,452 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 503 transitions. Word has length 19 [2020-01-16 18:04:27,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:27,452 INFO L478 AbstractCegarLoop]: Abstraction has 178 states and 503 transitions. [2020-01-16 18:04:27,452 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:27,452 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 503 transitions. [2020-01-16 18:04:27,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:27,453 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:27,453 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:27,453 INFO L426 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:27,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:27,453 INFO L82 PathProgramCache]: Analyzing trace with hash -94106516, now seen corresponding path program 402 times [2020-01-16 18:04:27,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:27,453 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679753717] [2020-01-16 18:04:27,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:27,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:27,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679753717] [2020-01-16 18:04:27,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:27,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:27,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401097314] [2020-01-16 18:04:27,647 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:27,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:27,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:27,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:27,648 INFO L87 Difference]: Start difference. First operand 178 states and 503 transitions. Second operand 8 states. [2020-01-16 18:04:27,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:27,723 INFO L93 Difference]: Finished difference Result 283 states and 697 transitions. [2020-01-16 18:04:27,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:27,723 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:27,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:27,724 INFO L225 Difference]: With dead ends: 283 [2020-01-16 18:04:27,724 INFO L226 Difference]: Without dead ends: 266 [2020-01-16 18:04:27,724 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:27,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-01-16 18:04:27,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 173. [2020-01-16 18:04:27,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-01-16 18:04:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 493 transitions. [2020-01-16 18:04:27,728 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 493 transitions. Word has length 19 [2020-01-16 18:04:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:27,728 INFO L478 AbstractCegarLoop]: Abstraction has 173 states and 493 transitions. [2020-01-16 18:04:27,728 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:27,728 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 493 transitions. [2020-01-16 18:04:27,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:27,729 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:27,729 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:27,729 INFO L426 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:27,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:27,729 INFO L82 PathProgramCache]: Analyzing trace with hash 196668370, now seen corresponding path program 403 times [2020-01-16 18:04:27,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:27,729 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016442331] [2020-01-16 18:04:27,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:27,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:27,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016442331] [2020-01-16 18:04:27,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:27,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:27,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045375759] [2020-01-16 18:04:27,902 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:27,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:27,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:27,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:27,903 INFO L87 Difference]: Start difference. First operand 173 states and 493 transitions. Second operand 8 states. [2020-01-16 18:04:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:27,980 INFO L93 Difference]: Finished difference Result 294 states and 714 transitions. [2020-01-16 18:04:27,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:27,980 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:27,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:27,981 INFO L225 Difference]: With dead ends: 294 [2020-01-16 18:04:27,981 INFO L226 Difference]: Without dead ends: 280 [2020-01-16 18:04:27,981 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:27,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-01-16 18:04:27,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 177. [2020-01-16 18:04:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-01-16 18:04:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 503 transitions. [2020-01-16 18:04:27,985 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 503 transitions. Word has length 19 [2020-01-16 18:04:27,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:27,985 INFO L478 AbstractCegarLoop]: Abstraction has 177 states and 503 transitions. [2020-01-16 18:04:27,985 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:27,985 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 503 transitions. [2020-01-16 18:04:27,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:27,986 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:27,986 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:27,986 INFO L426 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:27,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:27,986 INFO L82 PathProgramCache]: Analyzing trace with hash -677666956, now seen corresponding path program 404 times [2020-01-16 18:04:27,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:27,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885305926] [2020-01-16 18:04:27,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:28,159 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885305926] [2020-01-16 18:04:28,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:28,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:28,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40039797] [2020-01-16 18:04:28,159 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:28,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:28,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:28,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:28,160 INFO L87 Difference]: Start difference. First operand 177 states and 503 transitions. Second operand 8 states. [2020-01-16 18:04:28,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:28,233 INFO L93 Difference]: Finished difference Result 290 states and 703 transitions. [2020-01-16 18:04:28,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:28,234 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:28,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:28,235 INFO L225 Difference]: With dead ends: 290 [2020-01-16 18:04:28,235 INFO L226 Difference]: Without dead ends: 278 [2020-01-16 18:04:28,235 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:28,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-01-16 18:04:28,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 175. [2020-01-16 18:04:28,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-01-16 18:04:28,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 498 transitions. [2020-01-16 18:04:28,239 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 498 transitions. Word has length 19 [2020-01-16 18:04:28,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:28,240 INFO L478 AbstractCegarLoop]: Abstraction has 175 states and 498 transitions. [2020-01-16 18:04:28,240 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:28,240 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 498 transitions. [2020-01-16 18:04:28,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:28,240 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:28,240 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:28,240 INFO L426 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:28,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:28,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1686073366, now seen corresponding path program 405 times [2020-01-16 18:04:28,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:28,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883338366] [2020-01-16 18:04:28,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:28,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883338366] [2020-01-16 18:04:28,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:28,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:28,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2413082] [2020-01-16 18:04:28,418 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:28,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:28,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:28,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:28,418 INFO L87 Difference]: Start difference. First operand 175 states and 498 transitions. Second operand 8 states. [2020-01-16 18:04:28,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:28,491 INFO L93 Difference]: Finished difference Result 292 states and 712 transitions. [2020-01-16 18:04:28,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:28,492 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:28,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:28,492 INFO L225 Difference]: With dead ends: 292 [2020-01-16 18:04:28,493 INFO L226 Difference]: Without dead ends: 278 [2020-01-16 18:04:28,493 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:28,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-01-16 18:04:28,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 179. [2020-01-16 18:04:28,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-01-16 18:04:28,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 506 transitions. [2020-01-16 18:04:28,496 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 506 transitions. Word has length 19 [2020-01-16 18:04:28,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:28,496 INFO L478 AbstractCegarLoop]: Abstraction has 179 states and 506 transitions. [2020-01-16 18:04:28,497 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:28,497 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 506 transitions. [2020-01-16 18:04:28,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:28,497 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:28,497 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:28,497 INFO L426 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:28,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:28,497 INFO L82 PathProgramCache]: Analyzing trace with hash 940776222, now seen corresponding path program 406 times [2020-01-16 18:04:28,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:28,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448541209] [2020-01-16 18:04:28,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:28,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448541209] [2020-01-16 18:04:28,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:28,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:28,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603507454] [2020-01-16 18:04:28,665 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:28,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:28,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:28,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:28,666 INFO L87 Difference]: Start difference. First operand 179 states and 506 transitions. Second operand 8 states. [2020-01-16 18:04:28,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:28,744 INFO L93 Difference]: Finished difference Result 281 states and 695 transitions. [2020-01-16 18:04:28,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:28,744 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:28,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:28,745 INFO L225 Difference]: With dead ends: 281 [2020-01-16 18:04:28,745 INFO L226 Difference]: Without dead ends: 265 [2020-01-16 18:04:28,745 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-01-16 18:04:28,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 175. [2020-01-16 18:04:28,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-01-16 18:04:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 496 transitions. [2020-01-16 18:04:28,749 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 496 transitions. Word has length 19 [2020-01-16 18:04:28,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:28,749 INFO L478 AbstractCegarLoop]: Abstraction has 175 states and 496 transitions. [2020-01-16 18:04:28,749 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:28,749 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 496 transitions. [2020-01-16 18:04:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:28,749 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:28,749 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:28,750 INFO L426 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:28,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:28,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1249121762, now seen corresponding path program 407 times [2020-01-16 18:04:28,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:28,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317307947] [2020-01-16 18:04:28,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:28,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317307947] [2020-01-16 18:04:28,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:28,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:28,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70671470] [2020-01-16 18:04:28,934 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:28,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:28,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:28,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:28,934 INFO L87 Difference]: Start difference. First operand 175 states and 496 transitions. Second operand 8 states. [2020-01-16 18:04:29,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:29,005 INFO L93 Difference]: Finished difference Result 286 states and 694 transitions. [2020-01-16 18:04:29,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:29,005 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:29,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:29,006 INFO L225 Difference]: With dead ends: 286 [2020-01-16 18:04:29,006 INFO L226 Difference]: Without dead ends: 276 [2020-01-16 18:04:29,006 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-01-16 18:04:29,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 177. [2020-01-16 18:04:29,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-01-16 18:04:29,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 499 transitions. [2020-01-16 18:04:29,011 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 499 transitions. Word has length 19 [2020-01-16 18:04:29,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:29,011 INFO L478 AbstractCegarLoop]: Abstraction has 177 states and 499 transitions. [2020-01-16 18:04:29,011 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:29,011 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 499 transitions. [2020-01-16 18:04:29,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:29,011 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:29,011 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:29,011 INFO L426 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:29,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:29,012 INFO L82 PathProgramCache]: Analyzing trace with hash 461491546, now seen corresponding path program 408 times [2020-01-16 18:04:29,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:29,012 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759427012] [2020-01-16 18:04:29,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:29,192 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759427012] [2020-01-16 18:04:29,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:29,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:29,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11546622] [2020-01-16 18:04:29,193 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:29,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:29,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:29,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:29,194 INFO L87 Difference]: Start difference. First operand 177 states and 499 transitions. Second operand 8 states. [2020-01-16 18:04:29,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:29,277 INFO L93 Difference]: Finished difference Result 279 states and 688 transitions. [2020-01-16 18:04:29,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:29,278 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:29,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:29,278 INFO L225 Difference]: With dead ends: 279 [2020-01-16 18:04:29,279 INFO L226 Difference]: Without dead ends: 259 [2020-01-16 18:04:29,279 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-01-16 18:04:29,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 169. [2020-01-16 18:04:29,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-01-16 18:04:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 485 transitions. [2020-01-16 18:04:29,282 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 485 transitions. Word has length 19 [2020-01-16 18:04:29,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:29,283 INFO L478 AbstractCegarLoop]: Abstraction has 169 states and 485 transitions. [2020-01-16 18:04:29,283 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:29,283 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 485 transitions. [2020-01-16 18:04:29,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:29,283 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:29,283 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:29,283 INFO L426 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:29,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:29,283 INFO L82 PathProgramCache]: Analyzing trace with hash -612467258, now seen corresponding path program 409 times [2020-01-16 18:04:29,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:29,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473294901] [2020-01-16 18:04:29,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:29,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473294901] [2020-01-16 18:04:29,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:29,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:29,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062708820] [2020-01-16 18:04:29,487 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:29,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:29,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:29,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:29,487 INFO L87 Difference]: Start difference. First operand 169 states and 485 transitions. Second operand 8 states. [2020-01-16 18:04:29,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:29,543 INFO L93 Difference]: Finished difference Result 305 states and 732 transitions. [2020-01-16 18:04:29,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:29,544 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:29,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:29,544 INFO L225 Difference]: With dead ends: 305 [2020-01-16 18:04:29,545 INFO L226 Difference]: Without dead ends: 289 [2020-01-16 18:04:29,545 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:29,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-01-16 18:04:29,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 177. [2020-01-16 18:04:29,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-01-16 18:04:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 499 transitions. [2020-01-16 18:04:29,549 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 499 transitions. Word has length 19 [2020-01-16 18:04:29,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:29,549 INFO L478 AbstractCegarLoop]: Abstraction has 177 states and 499 transitions. [2020-01-16 18:04:29,550 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:29,550 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 499 transitions. [2020-01-16 18:04:29,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:29,550 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:29,550 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:29,550 INFO L426 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:29,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:29,550 INFO L82 PathProgramCache]: Analyzing trace with hash -237816072, now seen corresponding path program 410 times [2020-01-16 18:04:29,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:29,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488158582] [2020-01-16 18:04:29,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:29,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:29,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488158582] [2020-01-16 18:04:29,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:29,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:29,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904921637] [2020-01-16 18:04:29,746 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:29,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:29,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:29,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:29,746 INFO L87 Difference]: Start difference. First operand 177 states and 499 transitions. Second operand 8 states. [2020-01-16 18:04:29,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:29,824 INFO L93 Difference]: Finished difference Result 303 states and 722 transitions. [2020-01-16 18:04:29,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:29,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:29,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:29,826 INFO L225 Difference]: With dead ends: 303 [2020-01-16 18:04:29,826 INFO L226 Difference]: Without dead ends: 281 [2020-01-16 18:04:29,826 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:29,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-01-16 18:04:29,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 169. [2020-01-16 18:04:29,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-01-16 18:04:29,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 481 transitions. [2020-01-16 18:04:29,830 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 481 transitions. Word has length 19 [2020-01-16 18:04:29,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:29,830 INFO L478 AbstractCegarLoop]: Abstraction has 169 states and 481 transitions. [2020-01-16 18:04:29,830 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:29,831 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 481 transitions. [2020-01-16 18:04:29,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:29,831 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:29,831 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:29,831 INFO L426 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:29,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:29,831 INFO L82 PathProgramCache]: Analyzing trace with hash -82269952, now seen corresponding path program 411 times [2020-01-16 18:04:29,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:29,831 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765358344] [2020-01-16 18:04:29,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:30,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765358344] [2020-01-16 18:04:30,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:30,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:30,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098644643] [2020-01-16 18:04:30,020 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:30,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:30,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:30,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:30,020 INFO L87 Difference]: Start difference. First operand 169 states and 481 transitions. Second operand 8 states. [2020-01-16 18:04:30,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:30,076 INFO L93 Difference]: Finished difference Result 296 states and 705 transitions. [2020-01-16 18:04:30,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:30,076 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:30,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:30,077 INFO L225 Difference]: With dead ends: 296 [2020-01-16 18:04:30,077 INFO L226 Difference]: Without dead ends: 280 [2020-01-16 18:04:30,077 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:30,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-01-16 18:04:30,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 172. [2020-01-16 18:04:30,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-01-16 18:04:30,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 485 transitions. [2020-01-16 18:04:30,082 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 485 transitions. Word has length 19 [2020-01-16 18:04:30,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:30,082 INFO L478 AbstractCegarLoop]: Abstraction has 172 states and 485 transitions. [2020-01-16 18:04:30,082 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:30,082 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 485 transitions. [2020-01-16 18:04:30,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:30,082 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:30,082 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:30,082 INFO L426 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:30,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:30,083 INFO L82 PathProgramCache]: Analyzing trace with hash 176788274, now seen corresponding path program 412 times [2020-01-16 18:04:30,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:30,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798187391] [2020-01-16 18:04:30,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:30,275 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798187391] [2020-01-16 18:04:30,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:30,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:30,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354907940] [2020-01-16 18:04:30,275 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:30,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:30,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:30,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:30,276 INFO L87 Difference]: Start difference. First operand 172 states and 485 transitions. Second operand 8 states. [2020-01-16 18:04:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:30,332 INFO L93 Difference]: Finished difference Result 290 states and 690 transitions. [2020-01-16 18:04:30,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:30,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:30,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:30,333 INFO L225 Difference]: With dead ends: 290 [2020-01-16 18:04:30,333 INFO L226 Difference]: Without dead ends: 277 [2020-01-16 18:04:30,333 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:30,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-01-16 18:04:30,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 169. [2020-01-16 18:04:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-01-16 18:04:30,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 478 transitions. [2020-01-16 18:04:30,338 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 478 transitions. Word has length 19 [2020-01-16 18:04:30,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:30,338 INFO L478 AbstractCegarLoop]: Abstraction has 169 states and 478 transitions. [2020-01-16 18:04:30,338 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:30,338 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 478 transitions. [2020-01-16 18:04:30,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:30,338 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:30,338 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:30,339 INFO L426 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:30,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:30,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1840035768, now seen corresponding path program 413 times [2020-01-16 18:04:30,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:30,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671191926] [2020-01-16 18:04:30,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:30,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:30,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671191926] [2020-01-16 18:04:30,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:30,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:30,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924899270] [2020-01-16 18:04:30,522 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:30,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:30,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:30,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:30,523 INFO L87 Difference]: Start difference. First operand 169 states and 478 transitions. Second operand 8 states. [2020-01-16 18:04:30,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:30,595 INFO L93 Difference]: Finished difference Result 291 states and 694 transitions. [2020-01-16 18:04:30,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:30,595 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:30,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:30,596 INFO L225 Difference]: With dead ends: 291 [2020-01-16 18:04:30,596 INFO L226 Difference]: Without dead ends: 277 [2020-01-16 18:04:30,596 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:30,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-01-16 18:04:30,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 171. [2020-01-16 18:04:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-01-16 18:04:30,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 481 transitions. [2020-01-16 18:04:30,600 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 481 transitions. Word has length 19 [2020-01-16 18:04:30,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:30,600 INFO L478 AbstractCegarLoop]: Abstraction has 171 states and 481 transitions. [2020-01-16 18:04:30,600 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:30,600 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 481 transitions. [2020-01-16 18:04:30,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:30,601 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:30,601 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:30,601 INFO L426 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:30,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:30,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1334801698, now seen corresponding path program 414 times [2020-01-16 18:04:30,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:30,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18253162] [2020-01-16 18:04:30,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:30,791 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18253162] [2020-01-16 18:04:30,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:30,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:30,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899737202] [2020-01-16 18:04:30,791 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:30,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:30,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:30,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:30,792 INFO L87 Difference]: Start difference. First operand 171 states and 481 transitions. Second operand 8 states. [2020-01-16 18:04:30,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:30,848 INFO L93 Difference]: Finished difference Result 287 states and 683 transitions. [2020-01-16 18:04:30,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:30,848 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:30,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:30,849 INFO L225 Difference]: With dead ends: 287 [2020-01-16 18:04:30,849 INFO L226 Difference]: Without dead ends: 271 [2020-01-16 18:04:30,849 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:30,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-01-16 18:04:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 165. [2020-01-16 18:04:30,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-01-16 18:04:30,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 469 transitions. [2020-01-16 18:04:30,854 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 469 transitions. Word has length 19 [2020-01-16 18:04:30,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:30,854 INFO L478 AbstractCegarLoop]: Abstraction has 165 states and 469 transitions. [2020-01-16 18:04:30,854 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 469 transitions. [2020-01-16 18:04:30,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:30,854 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:30,854 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:30,854 INFO L426 AbstractCegarLoop]: === Iteration 419 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:30,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:30,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1034952984, now seen corresponding path program 415 times [2020-01-16 18:04:30,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:30,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189178625] [2020-01-16 18:04:30,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:31,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189178625] [2020-01-16 18:04:31,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:31,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:31,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378153320] [2020-01-16 18:04:31,055 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:31,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:31,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:31,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:31,056 INFO L87 Difference]: Start difference. First operand 165 states and 469 transitions. Second operand 8 states. [2020-01-16 18:04:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:31,113 INFO L93 Difference]: Finished difference Result 299 states and 714 transitions. [2020-01-16 18:04:31,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:31,114 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:31,115 INFO L225 Difference]: With dead ends: 299 [2020-01-16 18:04:31,115 INFO L226 Difference]: Without dead ends: 283 [2020-01-16 18:04:31,115 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:31,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-01-16 18:04:31,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 165. [2020-01-16 18:04:31,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-01-16 18:04:31,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 462 transitions. [2020-01-16 18:04:31,119 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 462 transitions. Word has length 19 [2020-01-16 18:04:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:31,119 INFO L478 AbstractCegarLoop]: Abstraction has 165 states and 462 transitions. [2020-01-16 18:04:31,119 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:31,119 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 462 transitions. [2020-01-16 18:04:31,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:31,119 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:31,119 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:31,120 INFO L426 AbstractCegarLoop]: === Iteration 420 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:31,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:31,120 INFO L82 PathProgramCache]: Analyzing trace with hash -660301798, now seen corresponding path program 416 times [2020-01-16 18:04:31,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:31,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032614294] [2020-01-16 18:04:31,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:31,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:31,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032614294] [2020-01-16 18:04:31,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:31,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:31,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210743093] [2020-01-16 18:04:31,315 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:31,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:31,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:31,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:31,316 INFO L87 Difference]: Start difference. First operand 165 states and 462 transitions. Second operand 8 states. [2020-01-16 18:04:31,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:31,389 INFO L93 Difference]: Finished difference Result 297 states and 704 transitions. [2020-01-16 18:04:31,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:31,390 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:31,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:31,390 INFO L225 Difference]: With dead ends: 297 [2020-01-16 18:04:31,391 INFO L226 Difference]: Without dead ends: 275 [2020-01-16 18:04:31,391 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:31,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-01-16 18:04:31,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 157. [2020-01-16 18:04:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-01-16 18:04:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 442 transitions. [2020-01-16 18:04:31,395 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 442 transitions. Word has length 19 [2020-01-16 18:04:31,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:31,395 INFO L478 AbstractCegarLoop]: Abstraction has 157 states and 442 transitions. [2020-01-16 18:04:31,395 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:31,395 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 442 transitions. [2020-01-16 18:04:31,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:31,395 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:31,396 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:31,396 INFO L426 AbstractCegarLoop]: === Iteration 421 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:31,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:31,396 INFO L82 PathProgramCache]: Analyzing trace with hash -179159454, now seen corresponding path program 417 times [2020-01-16 18:04:31,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:31,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915472611] [2020-01-16 18:04:31,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:31,593 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915472611] [2020-01-16 18:04:31,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:31,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:31,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430542123] [2020-01-16 18:04:31,594 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:31,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:31,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:31,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:31,594 INFO L87 Difference]: Start difference. First operand 157 states and 442 transitions. Second operand 8 states. [2020-01-16 18:04:31,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:31,651 INFO L93 Difference]: Finished difference Result 286 states and 682 transitions. [2020-01-16 18:04:31,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:31,651 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:31,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:31,652 INFO L225 Difference]: With dead ends: 286 [2020-01-16 18:04:31,652 INFO L226 Difference]: Without dead ends: 270 [2020-01-16 18:04:31,652 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-01-16 18:04:31,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 162. [2020-01-16 18:04:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-01-16 18:04:31,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 451 transitions. [2020-01-16 18:04:31,657 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 451 transitions. Word has length 19 [2020-01-16 18:04:31,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:31,657 INFO L478 AbstractCegarLoop]: Abstraction has 162 states and 451 transitions. [2020-01-16 18:04:31,657 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:31,657 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 451 transitions. [2020-01-16 18:04:31,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:31,657 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:31,657 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:31,658 INFO L426 AbstractCegarLoop]: === Iteration 422 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:31,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:31,658 INFO L82 PathProgramCache]: Analyzing trace with hash -930221548, now seen corresponding path program 418 times [2020-01-16 18:04:31,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:31,658 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756003989] [2020-01-16 18:04:31,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:31,853 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756003989] [2020-01-16 18:04:31,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:31,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:31,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516120783] [2020-01-16 18:04:31,853 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:31,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:31,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:31,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:31,854 INFO L87 Difference]: Start difference. First operand 162 states and 451 transitions. Second operand 8 states. [2020-01-16 18:04:31,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:31,932 INFO L93 Difference]: Finished difference Result 273 states and 661 transitions. [2020-01-16 18:04:31,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:31,932 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:31,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:31,933 INFO L225 Difference]: With dead ends: 273 [2020-01-16 18:04:31,933 INFO L226 Difference]: Without dead ends: 256 [2020-01-16 18:04:31,933 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:31,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-01-16 18:04:31,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 157. [2020-01-16 18:04:31,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-01-16 18:04:31,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 437 transitions. [2020-01-16 18:04:31,937 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 437 transitions. Word has length 19 [2020-01-16 18:04:31,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:31,937 INFO L478 AbstractCegarLoop]: Abstraction has 157 states and 437 transitions. [2020-01-16 18:04:31,937 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:31,937 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 437 transitions. [2020-01-16 18:04:31,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:31,938 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:31,938 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:31,938 INFO L426 AbstractCegarLoop]: === Iteration 423 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:31,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:31,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2094625272, now seen corresponding path program 419 times [2020-01-16 18:04:31,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:31,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688966421] [2020-01-16 18:04:31,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:32,134 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688966421] [2020-01-16 18:04:32,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:32,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:32,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422116843] [2020-01-16 18:04:32,135 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:32,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:32,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:32,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:32,135 INFO L87 Difference]: Start difference. First operand 157 states and 437 transitions. Second operand 8 states. [2020-01-16 18:04:32,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:32,209 INFO L93 Difference]: Finished difference Result 283 states and 672 transitions. [2020-01-16 18:04:32,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:32,209 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:32,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:32,210 INFO L225 Difference]: With dead ends: 283 [2020-01-16 18:04:32,210 INFO L226 Difference]: Without dead ends: 269 [2020-01-16 18:04:32,210 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:32,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-01-16 18:04:32,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 161. [2020-01-16 18:04:32,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-01-16 18:04:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 445 transitions. [2020-01-16 18:04:32,215 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 445 transitions. Word has length 19 [2020-01-16 18:04:32,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:32,215 INFO L478 AbstractCegarLoop]: Abstraction has 161 states and 445 transitions. [2020-01-16 18:04:32,215 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:32,215 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 445 transitions. [2020-01-16 18:04:32,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:32,215 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:32,215 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:32,215 INFO L426 AbstractCegarLoop]: === Iteration 424 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:32,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:32,216 INFO L82 PathProgramCache]: Analyzing trace with hash 2094030626, now seen corresponding path program 420 times [2020-01-16 18:04:32,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:32,216 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529860646] [2020-01-16 18:04:32,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:32,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529860646] [2020-01-16 18:04:32,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:32,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:32,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131943786] [2020-01-16 18:04:32,407 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:32,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:32,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:32,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:32,407 INFO L87 Difference]: Start difference. First operand 161 states and 445 transitions. Second operand 8 states. [2020-01-16 18:04:32,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:32,482 INFO L93 Difference]: Finished difference Result 272 states and 655 transitions. [2020-01-16 18:04:32,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:32,483 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:32,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:32,483 INFO L225 Difference]: With dead ends: 272 [2020-01-16 18:04:32,484 INFO L226 Difference]: Without dead ends: 250 [2020-01-16 18:04:32,484 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:32,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-01-16 18:04:32,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 151. [2020-01-16 18:04:32,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-01-16 18:04:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 423 transitions. [2020-01-16 18:04:32,487 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 423 transitions. Word has length 19 [2020-01-16 18:04:32,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:32,488 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 423 transitions. [2020-01-16 18:04:32,488 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:32,488 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 423 transitions. [2020-01-16 18:04:32,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:32,488 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:32,488 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:32,488 INFO L426 AbstractCegarLoop]: === Iteration 425 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:32,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:32,488 INFO L82 PathProgramCache]: Analyzing trace with hash 677525702, now seen corresponding path program 421 times [2020-01-16 18:04:32,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:32,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84921874] [2020-01-16 18:04:32,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:32,678 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84921874] [2020-01-16 18:04:32,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:32,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:32,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647299427] [2020-01-16 18:04:32,678 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:32,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:32,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:32,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:32,679 INFO L87 Difference]: Start difference. First operand 151 states and 423 transitions. Second operand 8 states. [2020-01-16 18:04:32,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:32,740 INFO L93 Difference]: Finished difference Result 273 states and 645 transitions. [2020-01-16 18:04:32,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:32,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:32,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:32,741 INFO L225 Difference]: With dead ends: 273 [2020-01-16 18:04:32,741 INFO L226 Difference]: Without dead ends: 257 [2020-01-16 18:04:32,741 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:32,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-01-16 18:04:32,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 157. [2020-01-16 18:04:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-01-16 18:04:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 437 transitions. [2020-01-16 18:04:32,745 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 437 transitions. Word has length 19 [2020-01-16 18:04:32,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:32,745 INFO L478 AbstractCegarLoop]: Abstraction has 157 states and 437 transitions. [2020-01-16 18:04:32,745 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:32,745 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 437 transitions. [2020-01-16 18:04:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:32,745 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:32,745 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:32,746 INFO L426 AbstractCegarLoop]: === Iteration 426 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:32,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:32,746 INFO L82 PathProgramCache]: Analyzing trace with hash 936583928, now seen corresponding path program 422 times [2020-01-16 18:04:32,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:32,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543927513] [2020-01-16 18:04:32,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:32,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:32,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543927513] [2020-01-16 18:04:32,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:32,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:32,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135172169] [2020-01-16 18:04:32,939 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:32,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:32,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:32,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:32,940 INFO L87 Difference]: Start difference. First operand 157 states and 437 transitions. Second operand 8 states. [2020-01-16 18:04:33,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:33,006 INFO L93 Difference]: Finished difference Result 267 states and 630 transitions. [2020-01-16 18:04:33,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:33,007 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:33,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:33,008 INFO L225 Difference]: With dead ends: 267 [2020-01-16 18:04:33,008 INFO L226 Difference]: Without dead ends: 254 [2020-01-16 18:04:33,008 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-01-16 18:04:33,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 154. [2020-01-16 18:04:33,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-01-16 18:04:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 430 transitions. [2020-01-16 18:04:33,011 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 430 transitions. Word has length 19 [2020-01-16 18:04:33,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:33,011 INFO L478 AbstractCegarLoop]: Abstraction has 154 states and 430 transitions. [2020-01-16 18:04:33,011 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:33,011 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 430 transitions. [2020-01-16 18:04:33,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:33,012 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:33,012 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:33,012 INFO L426 AbstractCegarLoop]: === Iteration 427 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:33,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:33,012 INFO L82 PathProgramCache]: Analyzing trace with hash -922912152, now seen corresponding path program 423 times [2020-01-16 18:04:33,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:33,012 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923890757] [2020-01-16 18:04:33,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:33,209 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923890757] [2020-01-16 18:04:33,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:33,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:33,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794447909] [2020-01-16 18:04:33,210 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:33,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:33,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:33,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:33,211 INFO L87 Difference]: Start difference. First operand 154 states and 430 transitions. Second operand 8 states. [2020-01-16 18:04:33,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:33,272 INFO L93 Difference]: Finished difference Result 264 states and 625 transitions. [2020-01-16 18:04:33,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:33,272 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:33,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:33,273 INFO L225 Difference]: With dead ends: 264 [2020-01-16 18:04:33,273 INFO L226 Difference]: Without dead ends: 248 [2020-01-16 18:04:33,273 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:33,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-01-16 18:04:33,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 159. [2020-01-16 18:04:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-01-16 18:04:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 439 transitions. [2020-01-16 18:04:33,278 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 439 transitions. Word has length 19 [2020-01-16 18:04:33,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:33,278 INFO L478 AbstractCegarLoop]: Abstraction has 159 states and 439 transitions. [2020-01-16 18:04:33,278 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:33,278 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 439 transitions. [2020-01-16 18:04:33,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:33,278 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:33,278 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:33,279 INFO L426 AbstractCegarLoop]: === Iteration 428 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:33,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:33,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1673974246, now seen corresponding path program 424 times [2020-01-16 18:04:33,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:33,279 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338489727] [2020-01-16 18:04:33,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:33,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338489727] [2020-01-16 18:04:33,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:33,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:33,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362784582] [2020-01-16 18:04:33,477 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:33,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:33,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:33,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:33,478 INFO L87 Difference]: Start difference. First operand 159 states and 439 transitions. Second operand 8 states. [2020-01-16 18:04:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:33,559 INFO L93 Difference]: Finished difference Result 251 states and 604 transitions. [2020-01-16 18:04:33,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:33,559 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:33,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:33,560 INFO L225 Difference]: With dead ends: 251 [2020-01-16 18:04:33,560 INFO L226 Difference]: Without dead ends: 234 [2020-01-16 18:04:33,560 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-01-16 18:04:33,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 154. [2020-01-16 18:04:33,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-01-16 18:04:33,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 427 transitions. [2020-01-16 18:04:33,564 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 427 transitions. Word has length 19 [2020-01-16 18:04:33,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:33,564 INFO L478 AbstractCegarLoop]: Abstraction has 154 states and 427 transitions. [2020-01-16 18:04:33,564 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:33,564 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 427 transitions. [2020-01-16 18:04:33,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:33,564 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:33,564 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:33,564 INFO L426 AbstractCegarLoop]: === Iteration 429 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:33,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:33,565 INFO L82 PathProgramCache]: Analyzing trace with hash -522490524, now seen corresponding path program 425 times [2020-01-16 18:04:33,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:33,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900814690] [2020-01-16 18:04:33,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:33,766 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900814690] [2020-01-16 18:04:33,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:33,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:33,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827921138] [2020-01-16 18:04:33,767 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:33,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:33,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:33,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:33,767 INFO L87 Difference]: Start difference. First operand 154 states and 427 transitions. Second operand 8 states. [2020-01-16 18:04:33,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:33,831 INFO L93 Difference]: Finished difference Result 246 states and 592 transitions. [2020-01-16 18:04:33,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:33,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:33,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:33,833 INFO L225 Difference]: With dead ends: 246 [2020-01-16 18:04:33,833 INFO L226 Difference]: Without dead ends: 236 [2020-01-16 18:04:33,833 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:33,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-01-16 18:04:33,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 156. [2020-01-16 18:04:33,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-01-16 18:04:33,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 430 transitions. [2020-01-16 18:04:33,836 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 430 transitions. Word has length 19 [2020-01-16 18:04:33,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:33,836 INFO L478 AbstractCegarLoop]: Abstraction has 156 states and 430 transitions. [2020-01-16 18:04:33,837 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:33,837 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 430 transitions. [2020-01-16 18:04:33,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:33,837 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:33,837 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:33,837 INFO L426 AbstractCegarLoop]: === Iteration 430 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:33,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:33,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1377797178, now seen corresponding path program 426 times [2020-01-16 18:04:33,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:33,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460299129] [2020-01-16 18:04:33,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:34,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:34,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460299129] [2020-01-16 18:04:34,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:34,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:34,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862608827] [2020-01-16 18:04:34,031 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:34,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:34,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:34,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:34,032 INFO L87 Difference]: Start difference. First operand 156 states and 430 transitions. Second operand 8 states. [2020-01-16 18:04:34,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:34,112 INFO L93 Difference]: Finished difference Result 235 states and 578 transitions. [2020-01-16 18:04:34,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:34,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:34,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:34,113 INFO L225 Difference]: With dead ends: 235 [2020-01-16 18:04:34,113 INFO L226 Difference]: Without dead ends: 218 [2020-01-16 18:04:34,113 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:34,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-01-16 18:04:34,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 151. [2020-01-16 18:04:34,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-01-16 18:04:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 420 transitions. [2020-01-16 18:04:34,118 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 420 transitions. Word has length 19 [2020-01-16 18:04:34,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:34,119 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 420 transitions. [2020-01-16 18:04:34,119 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 420 transitions. [2020-01-16 18:04:34,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:34,119 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:34,119 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:34,119 INFO L426 AbstractCegarLoop]: === Iteration 431 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:34,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:34,120 INFO L82 PathProgramCache]: Analyzing trace with hash -722039428, now seen corresponding path program 427 times [2020-01-16 18:04:34,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:34,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964459145] [2020-01-16 18:04:34,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:34,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964459145] [2020-01-16 18:04:34,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:34,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:34,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625441213] [2020-01-16 18:04:34,308 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:34,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:34,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:34,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:34,308 INFO L87 Difference]: Start difference. First operand 151 states and 420 transitions. Second operand 8 states. [2020-01-16 18:04:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:34,381 INFO L93 Difference]: Finished difference Result 266 states and 629 transitions. [2020-01-16 18:04:34,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:34,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:34,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:34,382 INFO L225 Difference]: With dead ends: 266 [2020-01-16 18:04:34,382 INFO L226 Difference]: Without dead ends: 252 [2020-01-16 18:04:34,383 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:34,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-01-16 18:04:34,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 155. [2020-01-16 18:04:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-01-16 18:04:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 430 transitions. [2020-01-16 18:04:34,386 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 430 transitions. Word has length 19 [2020-01-16 18:04:34,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:34,386 INFO L478 AbstractCegarLoop]: Abstraction has 155 states and 430 transitions. [2020-01-16 18:04:34,386 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:34,386 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 430 transitions. [2020-01-16 18:04:34,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:34,386 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:34,386 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:34,387 INFO L426 AbstractCegarLoop]: === Iteration 432 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:34,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:34,387 INFO L82 PathProgramCache]: Analyzing trace with hash 398090402, now seen corresponding path program 428 times [2020-01-16 18:04:34,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:34,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413684714] [2020-01-16 18:04:34,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:34,585 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413684714] [2020-01-16 18:04:34,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:34,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:34,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787010481] [2020-01-16 18:04:34,586 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:34,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:34,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:34,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:34,586 INFO L87 Difference]: Start difference. First operand 155 states and 430 transitions. Second operand 8 states. [2020-01-16 18:04:34,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:34,647 INFO L93 Difference]: Finished difference Result 262 states and 618 transitions. [2020-01-16 18:04:34,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:34,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:34,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:34,648 INFO L225 Difference]: With dead ends: 262 [2020-01-16 18:04:34,648 INFO L226 Difference]: Without dead ends: 250 [2020-01-16 18:04:34,648 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:34,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-01-16 18:04:34,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 153. [2020-01-16 18:04:34,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-01-16 18:04:34,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 425 transitions. [2020-01-16 18:04:34,651 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 425 transitions. Word has length 19 [2020-01-16 18:04:34,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:34,651 INFO L478 AbstractCegarLoop]: Abstraction has 153 states and 425 transitions. [2020-01-16 18:04:34,652 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:34,652 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 425 transitions. [2020-01-16 18:04:34,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:34,652 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:34,652 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:34,652 INFO L426 AbstractCegarLoop]: === Iteration 433 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:34,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:34,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1466741926, now seen corresponding path program 429 times [2020-01-16 18:04:34,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:34,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431436354] [2020-01-16 18:04:34,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:34,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:34,829 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431436354] [2020-01-16 18:04:34,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:34,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:34,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887914207] [2020-01-16 18:04:34,830 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:34,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:34,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:34,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:34,830 INFO L87 Difference]: Start difference. First operand 153 states and 425 transitions. Second operand 8 states. [2020-01-16 18:04:34,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:34,907 INFO L93 Difference]: Finished difference Result 260 states and 615 transitions. [2020-01-16 18:04:34,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:34,907 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:34,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:34,908 INFO L225 Difference]: With dead ends: 260 [2020-01-16 18:04:34,908 INFO L226 Difference]: Without dead ends: 246 [2020-01-16 18:04:34,908 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:34,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-01-16 18:04:34,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 157. [2020-01-16 18:04:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-01-16 18:04:34,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 433 transitions. [2020-01-16 18:04:34,913 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 433 transitions. Word has length 19 [2020-01-16 18:04:34,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:34,913 INFO L478 AbstractCegarLoop]: Abstraction has 157 states and 433 transitions. [2020-01-16 18:04:34,913 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:34,913 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 433 transitions. [2020-01-16 18:04:34,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:34,913 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:34,914 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:34,914 INFO L426 AbstractCegarLoop]: === Iteration 434 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:34,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:34,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2082928226, now seen corresponding path program 430 times [2020-01-16 18:04:34,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:34,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622643799] [2020-01-16 18:04:34,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:35,091 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622643799] [2020-01-16 18:04:35,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:35,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:35,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377196765] [2020-01-16 18:04:35,092 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:35,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:35,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:35,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:35,093 INFO L87 Difference]: Start difference. First operand 157 states and 433 transitions. Second operand 8 states. [2020-01-16 18:04:35,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:35,172 INFO L93 Difference]: Finished difference Result 249 states and 598 transitions. [2020-01-16 18:04:35,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:35,172 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:35,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:35,173 INFO L225 Difference]: With dead ends: 249 [2020-01-16 18:04:35,173 INFO L226 Difference]: Without dead ends: 233 [2020-01-16 18:04:35,173 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-01-16 18:04:35,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 153. [2020-01-16 18:04:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-01-16 18:04:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 423 transitions. [2020-01-16 18:04:35,177 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 423 transitions. Word has length 19 [2020-01-16 18:04:35,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:35,177 INFO L478 AbstractCegarLoop]: Abstraction has 153 states and 423 transitions. [2020-01-16 18:04:35,177 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:35,177 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 423 transitions. [2020-01-16 18:04:35,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:35,178 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:35,178 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:35,178 INFO L426 AbstractCegarLoop]: === Iteration 435 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:35,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:35,178 INFO L82 PathProgramCache]: Analyzing trace with hash -137139400, now seen corresponding path program 431 times [2020-01-16 18:04:35,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:35,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229031319] [2020-01-16 18:04:35,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:35,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229031319] [2020-01-16 18:04:35,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:35,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:35,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907807179] [2020-01-16 18:04:35,362 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:35,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:35,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:35,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:35,363 INFO L87 Difference]: Start difference. First operand 153 states and 423 transitions. Second operand 8 states. [2020-01-16 18:04:35,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:35,424 INFO L93 Difference]: Finished difference Result 245 states and 588 transitions. [2020-01-16 18:04:35,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:35,424 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:35,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:35,425 INFO L225 Difference]: With dead ends: 245 [2020-01-16 18:04:35,425 INFO L226 Difference]: Without dead ends: 235 [2020-01-16 18:04:35,425 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:35,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-01-16 18:04:35,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 155. [2020-01-16 18:04:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-01-16 18:04:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 426 transitions. [2020-01-16 18:04:35,429 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 426 transitions. Word has length 19 [2020-01-16 18:04:35,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:35,429 INFO L478 AbstractCegarLoop]: Abstraction has 155 states and 426 transitions. [2020-01-16 18:04:35,429 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:35,429 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 426 transitions. [2020-01-16 18:04:35,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:35,430 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:35,430 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:35,430 INFO L426 AbstractCegarLoop]: === Iteration 436 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:35,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:35,430 INFO L82 PathProgramCache]: Analyzing trace with hash -992446054, now seen corresponding path program 432 times [2020-01-16 18:04:35,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:35,430 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877584317] [2020-01-16 18:04:35,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:35,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877584317] [2020-01-16 18:04:35,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:35,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:35,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753418121] [2020-01-16 18:04:35,614 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:35,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:35,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:35,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:35,615 INFO L87 Difference]: Start difference. First operand 155 states and 426 transitions. Second operand 8 states. [2020-01-16 18:04:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:35,689 INFO L93 Difference]: Finished difference Result 234 states and 574 transitions. [2020-01-16 18:04:35,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:35,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:35,690 INFO L225 Difference]: With dead ends: 234 [2020-01-16 18:04:35,690 INFO L226 Difference]: Without dead ends: 214 [2020-01-16 18:04:35,690 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:35,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-01-16 18:04:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 147. [2020-01-16 18:04:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-01-16 18:04:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 412 transitions. [2020-01-16 18:04:35,694 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 412 transitions. Word has length 19 [2020-01-16 18:04:35,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:35,695 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 412 transitions. [2020-01-16 18:04:35,695 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:35,695 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 412 transitions. [2020-01-16 18:04:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:35,695 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:35,695 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:35,695 INFO L426 AbstractCegarLoop]: === Iteration 437 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:35,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:35,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1774006882, now seen corresponding path program 433 times [2020-01-16 18:04:35,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:35,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040436183] [2020-01-16 18:04:35,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:35,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040436183] [2020-01-16 18:04:35,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:35,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:35,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38005868] [2020-01-16 18:04:35,896 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:35,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:35,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:35,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:35,896 INFO L87 Difference]: Start difference. First operand 147 states and 412 transitions. Second operand 8 states. [2020-01-16 18:04:35,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:35,953 INFO L93 Difference]: Finished difference Result 260 states and 610 transitions. [2020-01-16 18:04:35,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:35,953 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:35,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:35,954 INFO L225 Difference]: With dead ends: 260 [2020-01-16 18:04:35,954 INFO L226 Difference]: Without dead ends: 244 [2020-01-16 18:04:35,954 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:35,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-01-16 18:04:35,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 154. [2020-01-16 18:04:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-01-16 18:04:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 430 transitions. [2020-01-16 18:04:35,959 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 430 transitions. Word has length 19 [2020-01-16 18:04:35,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:35,959 INFO L478 AbstractCegarLoop]: Abstraction has 154 states and 430 transitions. [2020-01-16 18:04:35,959 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:35,959 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 430 transitions. [2020-01-16 18:04:35,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:35,959 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:35,959 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:35,960 INFO L426 AbstractCegarLoop]: === Iteration 438 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:35,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:35,960 INFO L82 PathProgramCache]: Analyzing trace with hash -377719664, now seen corresponding path program 434 times [2020-01-16 18:04:35,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:35,960 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641326861] [2020-01-16 18:04:35,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:36,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641326861] [2020-01-16 18:04:36,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:36,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:36,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247429121] [2020-01-16 18:04:36,158 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:36,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:36,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:36,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:36,158 INFO L87 Difference]: Start difference. First operand 154 states and 430 transitions. Second operand 8 states. [2020-01-16 18:04:36,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:36,235 INFO L93 Difference]: Finished difference Result 254 states and 595 transitions. [2020-01-16 18:04:36,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:36,236 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:36,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:36,237 INFO L225 Difference]: With dead ends: 254 [2020-01-16 18:04:36,237 INFO L226 Difference]: Without dead ends: 241 [2020-01-16 18:04:36,237 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:36,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-01-16 18:04:36,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 151. [2020-01-16 18:04:36,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-01-16 18:04:36,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 424 transitions. [2020-01-16 18:04:36,241 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 424 transitions. Word has length 19 [2020-01-16 18:04:36,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:36,241 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 424 transitions. [2020-01-16 18:04:36,241 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:36,241 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 424 transitions. [2020-01-16 18:04:36,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:36,241 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:36,241 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:36,241 INFO L426 AbstractCegarLoop]: === Iteration 439 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:36,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:36,242 INFO L82 PathProgramCache]: Analyzing trace with hash 173569028, now seen corresponding path program 435 times [2020-01-16 18:04:36,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:36,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498955370] [2020-01-16 18:04:36,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:36,442 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498955370] [2020-01-16 18:04:36,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:36,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:36,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125876221] [2020-01-16 18:04:36,442 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:36,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:36,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:36,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:36,443 INFO L87 Difference]: Start difference. First operand 151 states and 424 transitions. Second operand 8 states. [2020-01-16 18:04:36,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:36,497 INFO L93 Difference]: Finished difference Result 260 states and 608 transitions. [2020-01-16 18:04:36,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:36,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:36,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:36,498 INFO L225 Difference]: With dead ends: 260 [2020-01-16 18:04:36,498 INFO L226 Difference]: Without dead ends: 244 [2020-01-16 18:04:36,498 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:36,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-01-16 18:04:36,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 154. [2020-01-16 18:04:36,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-01-16 18:04:36,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 428 transitions. [2020-01-16 18:04:36,502 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 428 transitions. Word has length 19 [2020-01-16 18:04:36,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:36,502 INFO L478 AbstractCegarLoop]: Abstraction has 154 states and 428 transitions. [2020-01-16 18:04:36,502 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:36,502 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 428 transitions. [2020-01-16 18:04:36,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:36,502 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:36,503 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:36,503 INFO L426 AbstractCegarLoop]: === Iteration 440 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:36,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:36,503 INFO L82 PathProgramCache]: Analyzing trace with hash 432627254, now seen corresponding path program 436 times [2020-01-16 18:04:36,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:36,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942388676] [2020-01-16 18:04:36,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:36,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942388676] [2020-01-16 18:04:36,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:36,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:36,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252994759] [2020-01-16 18:04:36,701 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:36,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:36,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:36,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:36,701 INFO L87 Difference]: Start difference. First operand 154 states and 428 transitions. Second operand 8 states. [2020-01-16 18:04:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:36,761 INFO L93 Difference]: Finished difference Result 254 states and 593 transitions. [2020-01-16 18:04:36,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:36,761 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:36,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:36,762 INFO L225 Difference]: With dead ends: 254 [2020-01-16 18:04:36,762 INFO L226 Difference]: Without dead ends: 241 [2020-01-16 18:04:36,762 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:36,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-01-16 18:04:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 151. [2020-01-16 18:04:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-01-16 18:04:36,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 422 transitions. [2020-01-16 18:04:36,766 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 422 transitions. Word has length 19 [2020-01-16 18:04:36,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:36,766 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 422 transitions. [2020-01-16 18:04:36,767 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:36,767 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 422 transitions. [2020-01-16 18:04:36,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:36,767 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:36,767 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:36,767 INFO L426 AbstractCegarLoop]: === Iteration 441 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:36,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:36,767 INFO L82 PathProgramCache]: Analyzing trace with hash -807811068, now seen corresponding path program 437 times [2020-01-16 18:04:36,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:36,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354302476] [2020-01-16 18:04:36,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:36,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354302476] [2020-01-16 18:04:36,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:36,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:36,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560739486] [2020-01-16 18:04:36,974 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:36,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:36,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:36,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:36,975 INFO L87 Difference]: Start difference. First operand 151 states and 422 transitions. Second operand 8 states. [2020-01-16 18:04:37,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:37,052 INFO L93 Difference]: Finished difference Result 246 states and 577 transitions. [2020-01-16 18:04:37,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:37,052 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:37,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:37,053 INFO L225 Difference]: With dead ends: 246 [2020-01-16 18:04:37,053 INFO L226 Difference]: Without dead ends: 236 [2020-01-16 18:04:37,053 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:37,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-01-16 18:04:37,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 152. [2020-01-16 18:04:37,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-01-16 18:04:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 423 transitions. [2020-01-16 18:04:37,061 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 423 transitions. Word has length 19 [2020-01-16 18:04:37,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:37,062 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 423 transitions. [2020-01-16 18:04:37,062 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:37,062 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 423 transitions. [2020-01-16 18:04:37,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:37,062 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:37,062 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:37,062 INFO L426 AbstractCegarLoop]: === Iteration 442 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:37,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:37,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1047453406, now seen corresponding path program 438 times [2020-01-16 18:04:37,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:37,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251717399] [2020-01-16 18:04:37,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:37,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251717399] [2020-01-16 18:04:37,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:37,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:37,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622063770] [2020-01-16 18:04:37,276 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:37,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:37,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:37,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:37,277 INFO L87 Difference]: Start difference. First operand 152 states and 423 transitions. Second operand 8 states. [2020-01-16 18:04:37,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:37,342 INFO L93 Difference]: Finished difference Result 246 states and 576 transitions. [2020-01-16 18:04:37,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:37,342 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:37,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:37,343 INFO L225 Difference]: With dead ends: 246 [2020-01-16 18:04:37,343 INFO L226 Difference]: Without dead ends: 233 [2020-01-16 18:04:37,343 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:37,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-01-16 18:04:37,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 149. [2020-01-16 18:04:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-01-16 18:04:37,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 418 transitions. [2020-01-16 18:04:37,347 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 418 transitions. Word has length 19 [2020-01-16 18:04:37,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:37,347 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 418 transitions. [2020-01-16 18:04:37,347 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:37,347 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 418 transitions. [2020-01-16 18:04:37,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:37,347 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:37,347 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:37,347 INFO L426 AbstractCegarLoop]: === Iteration 443 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:37,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:37,348 INFO L82 PathProgramCache]: Analyzing trace with hash -594926336, now seen corresponding path program 439 times [2020-01-16 18:04:37,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:37,348 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779838024] [2020-01-16 18:04:37,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:37,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779838024] [2020-01-16 18:04:37,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:37,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:37,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722123947] [2020-01-16 18:04:37,549 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:37,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:37,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:37,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:37,549 INFO L87 Difference]: Start difference. First operand 149 states and 418 transitions. Second operand 8 states. [2020-01-16 18:04:37,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:37,606 INFO L93 Difference]: Finished difference Result 258 states and 603 transitions. [2020-01-16 18:04:37,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:37,607 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:37,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:37,607 INFO L225 Difference]: With dead ends: 258 [2020-01-16 18:04:37,607 INFO L226 Difference]: Without dead ends: 242 [2020-01-16 18:04:37,608 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:37,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-01-16 18:04:37,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 155. [2020-01-16 18:04:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-01-16 18:04:37,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 432 transitions. [2020-01-16 18:04:37,612 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 432 transitions. Word has length 19 [2020-01-16 18:04:37,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:37,612 INFO L478 AbstractCegarLoop]: Abstraction has 155 states and 432 transitions. [2020-01-16 18:04:37,612 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:37,612 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 432 transitions. [2020-01-16 18:04:37,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:37,613 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:37,613 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:37,613 INFO L426 AbstractCegarLoop]: === Iteration 444 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:37,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:37,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1548314414, now seen corresponding path program 440 times [2020-01-16 18:04:37,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:37,613 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259589193] [2020-01-16 18:04:37,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:37,811 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259589193] [2020-01-16 18:04:37,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:37,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:37,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17976269] [2020-01-16 18:04:37,811 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:37,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:37,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:37,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:37,812 INFO L87 Difference]: Start difference. First operand 155 states and 432 transitions. Second operand 8 states. [2020-01-16 18:04:37,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:37,889 INFO L93 Difference]: Finished difference Result 252 states and 588 transitions. [2020-01-16 18:04:37,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:37,889 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:37,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:37,890 INFO L225 Difference]: With dead ends: 252 [2020-01-16 18:04:37,890 INFO L226 Difference]: Without dead ends: 239 [2020-01-16 18:04:37,890 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:37,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-01-16 18:04:37,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 152. [2020-01-16 18:04:37,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-01-16 18:04:37,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 425 transitions. [2020-01-16 18:04:37,894 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 425 transitions. Word has length 19 [2020-01-16 18:04:37,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:37,895 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 425 transitions. [2020-01-16 18:04:37,895 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:37,895 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 425 transitions. [2020-01-16 18:04:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:37,895 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:37,895 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:37,895 INFO L426 AbstractCegarLoop]: === Iteration 445 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:37,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:37,895 INFO L82 PathProgramCache]: Analyzing trace with hash 499165252, now seen corresponding path program 441 times [2020-01-16 18:04:37,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:37,896 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551290048] [2020-01-16 18:04:37,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:38,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551290048] [2020-01-16 18:04:38,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:38,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:38,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403445262] [2020-01-16 18:04:38,100 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:38,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:38,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:38,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:38,100 INFO L87 Difference]: Start difference. First operand 152 states and 425 transitions. Second operand 8 states. [2020-01-16 18:04:38,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:38,158 INFO L93 Difference]: Finished difference Result 254 states and 597 transitions. [2020-01-16 18:04:38,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:38,159 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:38,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:38,159 INFO L225 Difference]: With dead ends: 254 [2020-01-16 18:04:38,159 INFO L226 Difference]: Without dead ends: 238 [2020-01-16 18:04:38,160 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:38,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-01-16 18:04:38,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 157. [2020-01-16 18:04:38,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-01-16 18:04:38,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 434 transitions. [2020-01-16 18:04:38,163 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 434 transitions. Word has length 19 [2020-01-16 18:04:38,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:38,163 INFO L478 AbstractCegarLoop]: Abstraction has 157 states and 434 transitions. [2020-01-16 18:04:38,163 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:38,163 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 434 transitions. [2020-01-16 18:04:38,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:38,163 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:38,164 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:38,164 INFO L426 AbstractCegarLoop]: === Iteration 446 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:38,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:38,164 INFO L82 PathProgramCache]: Analyzing trace with hash -251896842, now seen corresponding path program 442 times [2020-01-16 18:04:38,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:38,164 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931728491] [2020-01-16 18:04:38,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:38,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:38,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931728491] [2020-01-16 18:04:38,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:38,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:38,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391622638] [2020-01-16 18:04:38,366 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:38,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:38,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:38,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:38,366 INFO L87 Difference]: Start difference. First operand 157 states and 434 transitions. Second operand 8 states. [2020-01-16 18:04:38,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:38,444 INFO L93 Difference]: Finished difference Result 241 states and 576 transitions. [2020-01-16 18:04:38,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:38,444 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:38,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:38,445 INFO L225 Difference]: With dead ends: 241 [2020-01-16 18:04:38,445 INFO L226 Difference]: Without dead ends: 224 [2020-01-16 18:04:38,445 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:38,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-01-16 18:04:38,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 152. [2020-01-16 18:04:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-01-16 18:04:38,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 422 transitions. [2020-01-16 18:04:38,449 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 422 transitions. Word has length 19 [2020-01-16 18:04:38,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:38,449 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 422 transitions. [2020-01-16 18:04:38,449 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:38,449 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 422 transitions. [2020-01-16 18:04:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:38,449 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:38,450 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:38,450 INFO L426 AbstractCegarLoop]: === Iteration 447 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:38,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:38,450 INFO L82 PathProgramCache]: Analyzing trace with hash 908750314, now seen corresponding path program 443 times [2020-01-16 18:04:38,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:38,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978232819] [2020-01-16 18:04:38,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:38,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978232819] [2020-01-16 18:04:38,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:38,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:38,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133534536] [2020-01-16 18:04:38,653 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:38,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:38,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:38,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:38,654 INFO L87 Difference]: Start difference. First operand 152 states and 422 transitions. Second operand 8 states. [2020-01-16 18:04:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:38,739 INFO L93 Difference]: Finished difference Result 245 states and 573 transitions. [2020-01-16 18:04:38,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:38,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:38,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:38,740 INFO L225 Difference]: With dead ends: 245 [2020-01-16 18:04:38,741 INFO L226 Difference]: Without dead ends: 235 [2020-01-16 18:04:38,741 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:38,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-01-16 18:04:38,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 154. [2020-01-16 18:04:38,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-01-16 18:04:38,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 425 transitions. [2020-01-16 18:04:38,745 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 425 transitions. Word has length 19 [2020-01-16 18:04:38,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:38,745 INFO L478 AbstractCegarLoop]: Abstraction has 154 states and 425 transitions. [2020-01-16 18:04:38,745 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:38,745 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 425 transitions. [2020-01-16 18:04:38,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:38,745 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:38,745 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:38,745 INFO L426 AbstractCegarLoop]: === Iteration 448 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:38,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:38,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1675603674, now seen corresponding path program 444 times [2020-01-16 18:04:38,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:38,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855493200] [2020-01-16 18:04:38,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:38,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855493200] [2020-01-16 18:04:38,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:38,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:38,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315406137] [2020-01-16 18:04:38,948 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:38,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:38,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:38,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:38,949 INFO L87 Difference]: Start difference. First operand 154 states and 425 transitions. Second operand 8 states. [2020-01-16 18:04:39,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:39,025 INFO L93 Difference]: Finished difference Result 238 states and 567 transitions. [2020-01-16 18:04:39,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:39,025 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:39,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:39,026 INFO L225 Difference]: With dead ends: 238 [2020-01-16 18:04:39,026 INFO L226 Difference]: Without dead ends: 221 [2020-01-16 18:04:39,026 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:39,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-01-16 18:04:39,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 149. [2020-01-16 18:04:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-01-16 18:04:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 416 transitions. [2020-01-16 18:04:39,030 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 416 transitions. Word has length 19 [2020-01-16 18:04:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:39,031 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 416 transitions. [2020-01-16 18:04:39,031 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:39,031 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 416 transitions. [2020-01-16 18:04:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:39,031 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:39,031 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:39,031 INFO L426 AbstractCegarLoop]: === Iteration 449 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:39,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:39,032 INFO L82 PathProgramCache]: Analyzing trace with hash -269330112, now seen corresponding path program 445 times [2020-01-16 18:04:39,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:39,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234801126] [2020-01-16 18:04:39,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:39,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234801126] [2020-01-16 18:04:39,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:39,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:39,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638381588] [2020-01-16 18:04:39,233 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:39,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:39,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:39,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:39,234 INFO L87 Difference]: Start difference. First operand 149 states and 416 transitions. Second operand 8 states. [2020-01-16 18:04:39,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:39,290 INFO L93 Difference]: Finished difference Result 244 states and 569 transitions. [2020-01-16 18:04:39,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:39,291 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:39,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:39,291 INFO L225 Difference]: With dead ends: 244 [2020-01-16 18:04:39,292 INFO L226 Difference]: Without dead ends: 228 [2020-01-16 18:04:39,292 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:39,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-01-16 18:04:39,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 155. [2020-01-16 18:04:39,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-01-16 18:04:39,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 430 transitions. [2020-01-16 18:04:39,295 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 430 transitions. Word has length 19 [2020-01-16 18:04:39,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:39,295 INFO L478 AbstractCegarLoop]: Abstraction has 155 states and 430 transitions. [2020-01-16 18:04:39,295 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:39,295 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 430 transitions. [2020-01-16 18:04:39,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:39,296 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:39,296 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:39,296 INFO L426 AbstractCegarLoop]: === Iteration 450 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:39,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:39,296 INFO L82 PathProgramCache]: Analyzing trace with hash -10271886, now seen corresponding path program 446 times [2020-01-16 18:04:39,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:39,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470585729] [2020-01-16 18:04:39,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:39,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:39,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470585729] [2020-01-16 18:04:39,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:39,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:39,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683763893] [2020-01-16 18:04:39,494 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:39,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:39,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:39,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:39,494 INFO L87 Difference]: Start difference. First operand 155 states and 430 transitions. Second operand 8 states. [2020-01-16 18:04:39,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:39,549 INFO L93 Difference]: Finished difference Result 238 states and 554 transitions. [2020-01-16 18:04:39,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:39,550 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:39,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:39,550 INFO L225 Difference]: With dead ends: 238 [2020-01-16 18:04:39,550 INFO L226 Difference]: Without dead ends: 225 [2020-01-16 18:04:39,551 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:39,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-01-16 18:04:39,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 152. [2020-01-16 18:04:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-01-16 18:04:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 423 transitions. [2020-01-16 18:04:39,554 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 423 transitions. Word has length 19 [2020-01-16 18:04:39,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:39,554 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 423 transitions. [2020-01-16 18:04:39,554 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:39,554 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 423 transitions. [2020-01-16 18:04:39,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:39,555 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:39,555 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:39,555 INFO L426 AbstractCegarLoop]: === Iteration 451 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:39,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:39,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1869767966, now seen corresponding path program 447 times [2020-01-16 18:04:39,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:39,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110954290] [2020-01-16 18:04:39,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:39,761 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110954290] [2020-01-16 18:04:39,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:39,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:39,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164583123] [2020-01-16 18:04:39,761 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:39,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:39,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:39,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:39,762 INFO L87 Difference]: Start difference. First operand 152 states and 423 transitions. Second operand 8 states. [2020-01-16 18:04:39,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:39,818 INFO L93 Difference]: Finished difference Result 235 states and 549 transitions. [2020-01-16 18:04:39,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:39,818 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:39,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:39,819 INFO L225 Difference]: With dead ends: 235 [2020-01-16 18:04:39,819 INFO L226 Difference]: Without dead ends: 219 [2020-01-16 18:04:39,819 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:39,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-01-16 18:04:39,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 157. [2020-01-16 18:04:39,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-01-16 18:04:39,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 432 transitions. [2020-01-16 18:04:39,822 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 432 transitions. Word has length 19 [2020-01-16 18:04:39,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:39,822 INFO L478 AbstractCegarLoop]: Abstraction has 157 states and 432 transitions. [2020-01-16 18:04:39,823 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:39,823 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 432 transitions. [2020-01-16 18:04:39,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:39,823 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:39,823 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:39,823 INFO L426 AbstractCegarLoop]: === Iteration 452 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:39,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:39,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1674137236, now seen corresponding path program 448 times [2020-01-16 18:04:39,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:39,824 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816065269] [2020-01-16 18:04:39,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:40,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816065269] [2020-01-16 18:04:40,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:40,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:40,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853794576] [2020-01-16 18:04:40,031 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:40,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:40,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:40,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:40,032 INFO L87 Difference]: Start difference. First operand 157 states and 432 transitions. Second operand 8 states. [2020-01-16 18:04:40,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:40,118 INFO L93 Difference]: Finished difference Result 222 states and 528 transitions. [2020-01-16 18:04:40,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:40,118 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:40,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:40,119 INFO L225 Difference]: With dead ends: 222 [2020-01-16 18:04:40,119 INFO L226 Difference]: Without dead ends: 205 [2020-01-16 18:04:40,119 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:40,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-01-16 18:04:40,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 152. [2020-01-16 18:04:40,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-01-16 18:04:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 420 transitions. [2020-01-16 18:04:40,122 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 420 transitions. Word has length 19 [2020-01-16 18:04:40,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:40,123 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 420 transitions. [2020-01-16 18:04:40,123 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:40,123 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 420 transitions. [2020-01-16 18:04:40,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:40,123 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:40,123 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:40,123 INFO L426 AbstractCegarLoop]: === Iteration 453 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:40,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:40,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1469346338, now seen corresponding path program 449 times [2020-01-16 18:04:40,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:40,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360878483] [2020-01-16 18:04:40,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:40,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360878483] [2020-01-16 18:04:40,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:40,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:40,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093838386] [2020-01-16 18:04:40,331 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:40,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:40,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:40,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:40,331 INFO L87 Difference]: Start difference. First operand 152 states and 420 transitions. Second operand 8 states. [2020-01-16 18:04:40,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:40,385 INFO L93 Difference]: Finished difference Result 217 states and 516 transitions. [2020-01-16 18:04:40,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:40,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:40,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:40,386 INFO L225 Difference]: With dead ends: 217 [2020-01-16 18:04:40,387 INFO L226 Difference]: Without dead ends: 207 [2020-01-16 18:04:40,387 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-01-16 18:04:40,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 154. [2020-01-16 18:04:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-01-16 18:04:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 423 transitions. [2020-01-16 18:04:40,391 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 423 transitions. Word has length 19 [2020-01-16 18:04:40,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:40,391 INFO L478 AbstractCegarLoop]: Abstraction has 154 states and 423 transitions. [2020-01-16 18:04:40,391 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:40,391 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 423 transitions. [2020-01-16 18:04:40,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:40,391 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:40,391 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:40,391 INFO L426 AbstractCegarLoop]: === Iteration 454 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:40,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:40,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1970314304, now seen corresponding path program 450 times [2020-01-16 18:04:40,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:40,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610025927] [2020-01-16 18:04:40,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:40,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610025927] [2020-01-16 18:04:40,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:40,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:40,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30162608] [2020-01-16 18:04:40,591 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:40,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:40,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:40,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:40,592 INFO L87 Difference]: Start difference. First operand 154 states and 423 transitions. Second operand 8 states. [2020-01-16 18:04:40,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:40,669 INFO L93 Difference]: Finished difference Result 206 states and 502 transitions. [2020-01-16 18:04:40,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:40,669 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:40,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:40,670 INFO L225 Difference]: With dead ends: 206 [2020-01-16 18:04:40,670 INFO L226 Difference]: Without dead ends: 189 [2020-01-16 18:04:40,670 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:40,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-01-16 18:04:40,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 149. [2020-01-16 18:04:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-01-16 18:04:40,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 414 transitions. [2020-01-16 18:04:40,674 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 414 transitions. Word has length 19 [2020-01-16 18:04:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:40,675 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 414 transitions. [2020-01-16 18:04:40,675 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:40,675 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 414 transitions. [2020-01-16 18:04:40,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:40,675 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:40,675 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:40,675 INFO L426 AbstractCegarLoop]: === Iteration 455 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:40,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:40,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1205521176, now seen corresponding path program 451 times [2020-01-16 18:04:40,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:40,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100303662] [2020-01-16 18:04:40,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:40,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100303662] [2020-01-16 18:04:40,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:40,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:40,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716577886] [2020-01-16 18:04:40,887 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:40,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:40,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:40,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:40,888 INFO L87 Difference]: Start difference. First operand 149 states and 414 transitions. Second operand 8 states. [2020-01-16 18:04:40,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:40,967 INFO L93 Difference]: Finished difference Result 214 states and 510 transitions. [2020-01-16 18:04:40,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:40,967 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:40,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:40,968 INFO L225 Difference]: With dead ends: 214 [2020-01-16 18:04:40,968 INFO L226 Difference]: Without dead ends: 204 [2020-01-16 18:04:40,968 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:40,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-01-16 18:04:40,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 151. [2020-01-16 18:04:40,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-01-16 18:04:40,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 418 transitions. [2020-01-16 18:04:40,972 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 418 transitions. Word has length 19 [2020-01-16 18:04:40,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:40,973 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 418 transitions. [2020-01-16 18:04:40,973 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:40,973 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 418 transitions. [2020-01-16 18:04:40,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:40,973 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:40,973 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:40,973 INFO L426 AbstractCegarLoop]: === Iteration 456 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:40,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:40,974 INFO L82 PathProgramCache]: Analyzing trace with hash 965878838, now seen corresponding path program 452 times [2020-01-16 18:04:40,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:40,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49020157] [2020-01-16 18:04:40,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:41,189 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49020157] [2020-01-16 18:04:41,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:41,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:41,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164661052] [2020-01-16 18:04:41,190 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:41,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:41,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:41,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:41,190 INFO L87 Difference]: Start difference. First operand 151 states and 418 transitions. Second operand 8 states. [2020-01-16 18:04:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:41,251 INFO L93 Difference]: Finished difference Result 214 states and 509 transitions. [2020-01-16 18:04:41,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:41,251 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:41,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:41,252 INFO L225 Difference]: With dead ends: 214 [2020-01-16 18:04:41,252 INFO L226 Difference]: Without dead ends: 203 [2020-01-16 18:04:41,252 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-01-16 18:04:41,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 150. [2020-01-16 18:04:41,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-01-16 18:04:41,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 416 transitions. [2020-01-16 18:04:41,256 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 416 transitions. Word has length 19 [2020-01-16 18:04:41,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:41,257 INFO L478 AbstractCegarLoop]: Abstraction has 150 states and 416 transitions. [2020-01-16 18:04:41,257 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:41,257 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 416 transitions. [2020-01-16 18:04:41,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:41,257 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:41,257 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:41,257 INFO L426 AbstractCegarLoop]: === Iteration 457 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:41,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:41,258 INFO L82 PathProgramCache]: Analyzing trace with hash 460818678, now seen corresponding path program 453 times [2020-01-16 18:04:41,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:41,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233029679] [2020-01-16 18:04:41,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:41,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233029679] [2020-01-16 18:04:41,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:41,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:41,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072080232] [2020-01-16 18:04:41,469 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:41,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:41,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:41,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:41,470 INFO L87 Difference]: Start difference. First operand 150 states and 416 transitions. Second operand 8 states. [2020-01-16 18:04:41,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:41,544 INFO L93 Difference]: Finished difference Result 211 states and 504 transitions. [2020-01-16 18:04:41,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:41,544 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:41,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:41,545 INFO L225 Difference]: With dead ends: 211 [2020-01-16 18:04:41,545 INFO L226 Difference]: Without dead ends: 201 [2020-01-16 18:04:41,545 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:41,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-01-16 18:04:41,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 152. [2020-01-16 18:04:41,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-01-16 18:04:41,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 419 transitions. [2020-01-16 18:04:41,549 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 419 transitions. Word has length 19 [2020-01-16 18:04:41,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:41,549 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 419 transitions. [2020-01-16 18:04:41,549 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:41,549 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 419 transitions. [2020-01-16 18:04:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:41,550 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:41,550 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:41,550 INFO L426 AbstractCegarLoop]: === Iteration 458 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:41,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:41,550 INFO L82 PathProgramCache]: Analyzing trace with hash -2123535310, now seen corresponding path program 454 times [2020-01-16 18:04:41,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:41,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177728096] [2020-01-16 18:04:41,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:41,779 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177728096] [2020-01-16 18:04:41,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:41,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:41,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601865454] [2020-01-16 18:04:41,780 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:41,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:41,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:41,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:41,780 INFO L87 Difference]: Start difference. First operand 152 states and 419 transitions. Second operand 8 states. [2020-01-16 18:04:41,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:41,852 INFO L93 Difference]: Finished difference Result 204 states and 498 transitions. [2020-01-16 18:04:41,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:41,852 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:41,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:41,853 INFO L225 Difference]: With dead ends: 204 [2020-01-16 18:04:41,853 INFO L226 Difference]: Without dead ends: 190 [2020-01-16 18:04:41,853 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-01-16 18:04:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 150. [2020-01-16 18:04:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-01-16 18:04:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 415 transitions. [2020-01-16 18:04:41,856 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 415 transitions. Word has length 19 [2020-01-16 18:04:41,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:41,856 INFO L478 AbstractCegarLoop]: Abstraction has 150 states and 415 transitions. [2020-01-16 18:04:41,857 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:41,857 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 415 transitions. [2020-01-16 18:04:41,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:41,857 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:41,857 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:41,857 INFO L426 AbstractCegarLoop]: === Iteration 459 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:41,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:41,858 INFO L82 PathProgramCache]: Analyzing trace with hash -107206542, now seen corresponding path program 455 times [2020-01-16 18:04:41,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:41,858 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566347708] [2020-01-16 18:04:41,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:42,059 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566347708] [2020-01-16 18:04:42,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:42,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:42,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92357964] [2020-01-16 18:04:42,060 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:42,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:42,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:42,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:42,060 INFO L87 Difference]: Start difference. First operand 150 states and 415 transitions. Second operand 8 states. [2020-01-16 18:04:42,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:42,114 INFO L93 Difference]: Finished difference Result 198 states and 486 transitions. [2020-01-16 18:04:42,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:42,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:42,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:42,115 INFO L225 Difference]: With dead ends: 198 [2020-01-16 18:04:42,115 INFO L226 Difference]: Without dead ends: 188 [2020-01-16 18:04:42,116 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:42,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-01-16 18:04:42,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 152. [2020-01-16 18:04:42,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-01-16 18:04:42,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 418 transitions. [2020-01-16 18:04:42,119 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 418 transitions. Word has length 19 [2020-01-16 18:04:42,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:42,119 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 418 transitions. [2020-01-16 18:04:42,119 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:42,119 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 418 transitions. [2020-01-16 18:04:42,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:42,119 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:42,119 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:42,120 INFO L426 AbstractCegarLoop]: === Iteration 460 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:42,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:42,120 INFO L82 PathProgramCache]: Analyzing trace with hash -962513196, now seen corresponding path program 456 times [2020-01-16 18:04:42,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:42,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412173523] [2020-01-16 18:04:42,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:42,333 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412173523] [2020-01-16 18:04:42,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:42,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:42,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826858304] [2020-01-16 18:04:42,334 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:42,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:42,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:42,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:42,334 INFO L87 Difference]: Start difference. First operand 152 states and 418 transitions. Second operand 8 states. [2020-01-16 18:04:42,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:42,403 INFO L93 Difference]: Finished difference Result 187 states and 472 transitions. [2020-01-16 18:04:42,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:42,403 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:42,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:42,404 INFO L225 Difference]: With dead ends: 187 [2020-01-16 18:04:42,404 INFO L226 Difference]: Without dead ends: 170 [2020-01-16 18:04:42,404 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:42,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-01-16 18:04:42,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 147. [2020-01-16 18:04:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-01-16 18:04:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 410 transitions. [2020-01-16 18:04:42,408 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 410 transitions. Word has length 19 [2020-01-16 18:04:42,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:42,408 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 410 transitions. [2020-01-16 18:04:42,408 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:42,408 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 410 transitions. [2020-01-16 18:04:42,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:42,409 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:42,409 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:42,409 INFO L426 AbstractCegarLoop]: === Iteration 461 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:42,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:42,409 INFO L82 PathProgramCache]: Analyzing trace with hash 915076246, now seen corresponding path program 457 times [2020-01-16 18:04:42,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:42,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11759916] [2020-01-16 18:04:42,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:42,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11759916] [2020-01-16 18:04:42,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:42,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:42,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565290239] [2020-01-16 18:04:42,600 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:42,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:42,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:42,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:42,600 INFO L87 Difference]: Start difference. First operand 147 states and 410 transitions. Second operand 8 states. [2020-01-16 18:04:42,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:42,680 INFO L93 Difference]: Finished difference Result 246 states and 578 transitions. [2020-01-16 18:04:42,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:42,681 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:42,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:42,682 INFO L225 Difference]: With dead ends: 246 [2020-01-16 18:04:42,682 INFO L226 Difference]: Without dead ends: 232 [2020-01-16 18:04:42,682 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:42,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-01-16 18:04:42,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 151. [2020-01-16 18:04:42,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-01-16 18:04:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 420 transitions. [2020-01-16 18:04:42,686 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 420 transitions. Word has length 19 [2020-01-16 18:04:42,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:42,686 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 420 transitions. [2020-01-16 18:04:42,686 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:42,686 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 420 transitions. [2020-01-16 18:04:42,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:42,686 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:42,687 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:42,687 INFO L426 AbstractCegarLoop]: === Iteration 462 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:42,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:42,687 INFO L82 PathProgramCache]: Analyzing trace with hash 40740920, now seen corresponding path program 458 times [2020-01-16 18:04:42,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:42,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69460069] [2020-01-16 18:04:42,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:42,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:42,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69460069] [2020-01-16 18:04:42,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:42,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:42,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167251044] [2020-01-16 18:04:42,882 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:42,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:42,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:42,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:42,883 INFO L87 Difference]: Start difference. First operand 151 states and 420 transitions. Second operand 8 states. [2020-01-16 18:04:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:42,964 INFO L93 Difference]: Finished difference Result 242 states and 567 transitions. [2020-01-16 18:04:42,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:42,964 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:42,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:42,965 INFO L225 Difference]: With dead ends: 242 [2020-01-16 18:04:42,965 INFO L226 Difference]: Without dead ends: 230 [2020-01-16 18:04:42,965 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:42,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-01-16 18:04:42,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 149. [2020-01-16 18:04:42,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-01-16 18:04:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 416 transitions. [2020-01-16 18:04:42,968 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 416 transitions. Word has length 19 [2020-01-16 18:04:42,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:42,968 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 416 transitions. [2020-01-16 18:04:42,968 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:42,968 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 416 transitions. [2020-01-16 18:04:42,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:42,969 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:42,969 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:42,969 INFO L426 AbstractCegarLoop]: === Iteration 463 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:42,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:42,969 INFO L82 PathProgramCache]: Analyzing trace with hash 2076098360, now seen corresponding path program 459 times [2020-01-16 18:04:42,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:42,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672254352] [2020-01-16 18:04:42,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:43,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672254352] [2020-01-16 18:04:43,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:43,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:43,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140362290] [2020-01-16 18:04:43,158 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:43,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:43,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:43,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:43,159 INFO L87 Difference]: Start difference. First operand 149 states and 416 transitions. Second operand 8 states. [2020-01-16 18:04:43,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:43,231 INFO L93 Difference]: Finished difference Result 246 states and 577 transitions. [2020-01-16 18:04:43,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:43,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:43,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:43,232 INFO L225 Difference]: With dead ends: 246 [2020-01-16 18:04:43,232 INFO L226 Difference]: Without dead ends: 232 [2020-01-16 18:04:43,232 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:43,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-01-16 18:04:43,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 151. [2020-01-16 18:04:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-01-16 18:04:43,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 419 transitions. [2020-01-16 18:04:43,235 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 419 transitions. Word has length 19 [2020-01-16 18:04:43,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:43,235 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 419 transitions. [2020-01-16 18:04:43,236 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:43,236 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 419 transitions. [2020-01-16 18:04:43,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:43,236 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:43,236 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:43,236 INFO L426 AbstractCegarLoop]: === Iteration 464 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:43,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:43,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1098739106, now seen corresponding path program 460 times [2020-01-16 18:04:43,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:43,236 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310762597] [2020-01-16 18:04:43,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:43,425 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310762597] [2020-01-16 18:04:43,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:43,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:43,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393335111] [2020-01-16 18:04:43,425 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:43,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:43,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:43,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:43,426 INFO L87 Difference]: Start difference. First operand 151 states and 419 transitions. Second operand 8 states. [2020-01-16 18:04:43,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:43,491 INFO L93 Difference]: Finished difference Result 242 states and 566 transitions. [2020-01-16 18:04:43,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:43,492 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:43,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:43,492 INFO L225 Difference]: With dead ends: 242 [2020-01-16 18:04:43,493 INFO L226 Difference]: Without dead ends: 230 [2020-01-16 18:04:43,493 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:43,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-01-16 18:04:43,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 149. [2020-01-16 18:04:43,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-01-16 18:04:43,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 415 transitions. [2020-01-16 18:04:43,497 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 415 transitions. Word has length 19 [2020-01-16 18:04:43,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:43,497 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 415 transitions. [2020-01-16 18:04:43,497 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:43,497 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 415 transitions. [2020-01-16 18:04:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:43,497 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:43,497 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:43,497 INFO L426 AbstractCegarLoop]: === Iteration 465 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:43,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:43,498 INFO L82 PathProgramCache]: Analyzing trace with hash -321241190, now seen corresponding path program 461 times [2020-01-16 18:04:43,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:43,498 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721006576] [2020-01-16 18:04:43,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:43,695 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721006576] [2020-01-16 18:04:43,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:43,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:43,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713496705] [2020-01-16 18:04:43,695 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:43,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:43,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:43,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:43,695 INFO L87 Difference]: Start difference. First operand 149 states and 415 transitions. Second operand 8 states. [2020-01-16 18:04:43,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:43,771 INFO L93 Difference]: Finished difference Result 237 states and 555 transitions. [2020-01-16 18:04:43,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:43,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:43,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:43,772 INFO L225 Difference]: With dead ends: 237 [2020-01-16 18:04:43,772 INFO L226 Difference]: Without dead ends: 227 [2020-01-16 18:04:43,772 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:43,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-01-16 18:04:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 150. [2020-01-16 18:04:43,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-01-16 18:04:43,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 416 transitions. [2020-01-16 18:04:43,776 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 416 transitions. Word has length 19 [2020-01-16 18:04:43,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:43,776 INFO L478 AbstractCegarLoop]: Abstraction has 150 states and 416 transitions. [2020-01-16 18:04:43,776 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:43,776 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 416 transitions. [2020-01-16 18:04:43,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:43,777 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:43,777 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:43,777 INFO L426 AbstractCegarLoop]: === Iteration 466 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:43,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:43,777 INFO L82 PathProgramCache]: Analyzing trace with hash -560883528, now seen corresponding path program 462 times [2020-01-16 18:04:43,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:43,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280470358] [2020-01-16 18:04:43,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:44,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:44,070 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280470358] [2020-01-16 18:04:44,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:44,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:44,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575568290] [2020-01-16 18:04:44,071 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:44,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:44,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:44,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:44,072 INFO L87 Difference]: Start difference. First operand 150 states and 416 transitions. Second operand 8 states. [2020-01-16 18:04:44,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:44,137 INFO L93 Difference]: Finished difference Result 237 states and 554 transitions. [2020-01-16 18:04:44,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:44,137 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:44,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:44,137 INFO L225 Difference]: With dead ends: 237 [2020-01-16 18:04:44,137 INFO L226 Difference]: Without dead ends: 225 [2020-01-16 18:04:44,138 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-01-16 18:04:44,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 148. [2020-01-16 18:04:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-01-16 18:04:44,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 413 transitions. [2020-01-16 18:04:44,140 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 413 transitions. Word has length 19 [2020-01-16 18:04:44,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:44,140 INFO L478 AbstractCegarLoop]: Abstraction has 148 states and 413 transitions. [2020-01-16 18:04:44,140 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:44,140 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 413 transitions. [2020-01-16 18:04:44,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:44,141 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:44,141 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:44,141 INFO L426 AbstractCegarLoop]: === Iteration 467 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:44,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:44,141 INFO L82 PathProgramCache]: Analyzing trace with hash -695864712, now seen corresponding path program 463 times [2020-01-16 18:04:44,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:44,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113892169] [2020-01-16 18:04:44,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:44,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:44,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113892169] [2020-01-16 18:04:44,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:44,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:44,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091787680] [2020-01-16 18:04:44,319 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:44,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:44,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:44,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:44,319 INFO L87 Difference]: Start difference. First operand 148 states and 413 transitions. Second operand 8 states. [2020-01-16 18:04:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:44,398 INFO L93 Difference]: Finished difference Result 246 states and 577 transitions. [2020-01-16 18:04:44,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:44,398 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:44,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:44,399 INFO L225 Difference]: With dead ends: 246 [2020-01-16 18:04:44,399 INFO L226 Difference]: Without dead ends: 232 [2020-01-16 18:04:44,399 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:44,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-01-16 18:04:44,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 152. [2020-01-16 18:04:44,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-01-16 18:04:44,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 423 transitions. [2020-01-16 18:04:44,403 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 423 transitions. Word has length 19 [2020-01-16 18:04:44,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:44,403 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 423 transitions. [2020-01-16 18:04:44,404 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:44,404 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 423 transitions. [2020-01-16 18:04:44,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:44,404 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:44,404 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:44,404 INFO L426 AbstractCegarLoop]: === Iteration 468 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:44,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1570200038, now seen corresponding path program 464 times [2020-01-16 18:04:44,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:44,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248813492] [2020-01-16 18:04:44,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:44,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248813492] [2020-01-16 18:04:44,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:44,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:44,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424845634] [2020-01-16 18:04:44,576 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:44,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:44,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:44,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:44,576 INFO L87 Difference]: Start difference. First operand 152 states and 423 transitions. Second operand 8 states. [2020-01-16 18:04:44,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:44,657 INFO L93 Difference]: Finished difference Result 242 states and 566 transitions. [2020-01-16 18:04:44,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:44,657 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:44,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:44,658 INFO L225 Difference]: With dead ends: 242 [2020-01-16 18:04:44,658 INFO L226 Difference]: Without dead ends: 230 [2020-01-16 18:04:44,658 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:44,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-01-16 18:04:44,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 150. [2020-01-16 18:04:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-01-16 18:04:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 418 transitions. [2020-01-16 18:04:44,662 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 418 transitions. Word has length 19 [2020-01-16 18:04:44,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:44,662 INFO L478 AbstractCegarLoop]: Abstraction has 150 states and 418 transitions. [2020-01-16 18:04:44,662 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:44,662 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 418 transitions. [2020-01-16 18:04:44,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:44,662 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:44,662 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:44,662 INFO L426 AbstractCegarLoop]: === Iteration 469 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:44,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:44,663 INFO L82 PathProgramCache]: Analyzing trace with hash 793540284, now seen corresponding path program 465 times [2020-01-16 18:04:44,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:44,663 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159245890] [2020-01-16 18:04:44,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:44,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159245890] [2020-01-16 18:04:44,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:44,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:44,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306278412] [2020-01-16 18:04:44,839 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:44,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:44,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:44,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:44,840 INFO L87 Difference]: Start difference. First operand 150 states and 418 transitions. Second operand 8 states. [2020-01-16 18:04:44,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:44,920 INFO L93 Difference]: Finished difference Result 244 states and 575 transitions. [2020-01-16 18:04:44,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:44,920 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:44,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:44,921 INFO L225 Difference]: With dead ends: 244 [2020-01-16 18:04:44,921 INFO L226 Difference]: Without dead ends: 230 [2020-01-16 18:04:44,921 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:44,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-01-16 18:04:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 154. [2020-01-16 18:04:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-01-16 18:04:44,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 426 transitions. [2020-01-16 18:04:44,925 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 426 transitions. Word has length 19 [2020-01-16 18:04:44,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:44,925 INFO L478 AbstractCegarLoop]: Abstraction has 154 states and 426 transitions. [2020-01-16 18:04:44,925 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 426 transitions. [2020-01-16 18:04:44,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:44,925 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:44,925 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:44,925 INFO L426 AbstractCegarLoop]: === Iteration 470 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:44,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:44,926 INFO L82 PathProgramCache]: Analyzing trace with hash 48243140, now seen corresponding path program 466 times [2020-01-16 18:04:44,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:44,926 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114330004] [2020-01-16 18:04:44,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:45,101 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114330004] [2020-01-16 18:04:45,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:45,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:45,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353770123] [2020-01-16 18:04:45,102 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:45,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:45,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:45,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:45,102 INFO L87 Difference]: Start difference. First operand 154 states and 426 transitions. Second operand 8 states. [2020-01-16 18:04:45,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:45,178 INFO L93 Difference]: Finished difference Result 233 states and 558 transitions. [2020-01-16 18:04:45,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:45,179 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:45,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:45,179 INFO L225 Difference]: With dead ends: 233 [2020-01-16 18:04:45,179 INFO L226 Difference]: Without dead ends: 217 [2020-01-16 18:04:45,180 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:45,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-01-16 18:04:45,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 150. [2020-01-16 18:04:45,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-01-16 18:04:45,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 416 transitions. [2020-01-16 18:04:45,183 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 416 transitions. Word has length 19 [2020-01-16 18:04:45,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:45,183 INFO L478 AbstractCegarLoop]: Abstraction has 150 states and 416 transitions. [2020-01-16 18:04:45,183 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:45,183 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 416 transitions. [2020-01-16 18:04:45,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:45,184 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:45,184 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:45,184 INFO L426 AbstractCegarLoop]: === Iteration 471 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:45,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:45,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2141654844, now seen corresponding path program 467 times [2020-01-16 18:04:45,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:45,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552046191] [2020-01-16 18:04:45,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:45,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552046191] [2020-01-16 18:04:45,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:45,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:45,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126482524] [2020-01-16 18:04:45,363 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:45,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:45,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:45,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:45,363 INFO L87 Difference]: Start difference. First operand 150 states and 416 transitions. Second operand 8 states. [2020-01-16 18:04:45,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:45,438 INFO L93 Difference]: Finished difference Result 238 states and 557 transitions. [2020-01-16 18:04:45,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:45,438 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:45,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:45,439 INFO L225 Difference]: With dead ends: 238 [2020-01-16 18:04:45,439 INFO L226 Difference]: Without dead ends: 228 [2020-01-16 18:04:45,439 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:45,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-01-16 18:04:45,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 152. [2020-01-16 18:04:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-01-16 18:04:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 419 transitions. [2020-01-16 18:04:45,443 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 419 transitions. Word has length 19 [2020-01-16 18:04:45,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:45,443 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 419 transitions. [2020-01-16 18:04:45,443 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:45,443 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 419 transitions. [2020-01-16 18:04:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:45,444 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:45,444 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:45,444 INFO L426 AbstractCegarLoop]: === Iteration 472 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:45,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:45,444 INFO L82 PathProgramCache]: Analyzing trace with hash -431041536, now seen corresponding path program 468 times [2020-01-16 18:04:45,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:45,444 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958160782] [2020-01-16 18:04:45,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:45,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958160782] [2020-01-16 18:04:45,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:45,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:45,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496059682] [2020-01-16 18:04:45,625 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:45,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:45,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:45,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:45,626 INFO L87 Difference]: Start difference. First operand 152 states and 419 transitions. Second operand 8 states. [2020-01-16 18:04:45,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:45,711 INFO L93 Difference]: Finished difference Result 231 states and 551 transitions. [2020-01-16 18:04:45,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:45,711 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:45,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:45,712 INFO L225 Difference]: With dead ends: 231 [2020-01-16 18:04:45,712 INFO L226 Difference]: Without dead ends: 215 [2020-01-16 18:04:45,712 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:45,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-01-16 18:04:45,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 148. [2020-01-16 18:04:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-01-16 18:04:45,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 412 transitions. [2020-01-16 18:04:45,716 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 412 transitions. Word has length 19 [2020-01-16 18:04:45,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:45,716 INFO L478 AbstractCegarLoop]: Abstraction has 148 states and 412 transitions. [2020-01-16 18:04:45,716 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 412 transitions. [2020-01-16 18:04:45,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:45,716 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:45,716 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:45,717 INFO L426 AbstractCegarLoop]: === Iteration 473 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:45,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:45,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1124777348, now seen corresponding path program 469 times [2020-01-16 18:04:45,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:45,717 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781092386] [2020-01-16 18:04:45,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:45,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781092386] [2020-01-16 18:04:45,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:45,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:45,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586352781] [2020-01-16 18:04:45,892 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:45,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:45,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:45,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:45,893 INFO L87 Difference]: Start difference. First operand 148 states and 412 transitions. Second operand 8 states. [2020-01-16 18:04:45,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:45,963 INFO L93 Difference]: Finished difference Result 236 states and 552 transitions. [2020-01-16 18:04:45,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:45,964 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:45,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:45,964 INFO L225 Difference]: With dead ends: 236 [2020-01-16 18:04:45,964 INFO L226 Difference]: Without dead ends: 222 [2020-01-16 18:04:45,965 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:45,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-01-16 18:04:45,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 152. [2020-01-16 18:04:45,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-01-16 18:04:45,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 422 transitions. [2020-01-16 18:04:45,968 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 422 transitions. Word has length 19 [2020-01-16 18:04:45,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:45,968 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 422 transitions. [2020-01-16 18:04:45,968 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:45,969 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 422 transitions. [2020-01-16 18:04:45,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:45,969 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:45,969 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:45,969 INFO L426 AbstractCegarLoop]: === Iteration 474 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:45,969 INFO L82 PathProgramCache]: Analyzing trace with hash -4647518, now seen corresponding path program 470 times [2020-01-16 18:04:45,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:45,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687474222] [2020-01-16 18:04:45,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:46,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687474222] [2020-01-16 18:04:46,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:46,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:46,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146758920] [2020-01-16 18:04:46,146 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:46,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:46,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:46,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:46,146 INFO L87 Difference]: Start difference. First operand 152 states and 422 transitions. Second operand 8 states. [2020-01-16 18:04:46,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:46,207 INFO L93 Difference]: Finished difference Result 232 states and 541 transitions. [2020-01-16 18:04:46,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:46,207 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:46,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:46,208 INFO L225 Difference]: With dead ends: 232 [2020-01-16 18:04:46,208 INFO L226 Difference]: Without dead ends: 220 [2020-01-16 18:04:46,208 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:46,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-01-16 18:04:46,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 150. [2020-01-16 18:04:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-01-16 18:04:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 417 transitions. [2020-01-16 18:04:46,211 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 417 transitions. Word has length 19 [2020-01-16 18:04:46,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:46,211 INFO L478 AbstractCegarLoop]: Abstraction has 150 states and 417 transitions. [2020-01-16 18:04:46,211 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:46,211 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 417 transitions. [2020-01-16 18:04:46,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:46,212 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:46,212 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:46,212 INFO L426 AbstractCegarLoop]: === Iteration 475 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:46,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:46,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1869479846, now seen corresponding path program 471 times [2020-01-16 18:04:46,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:46,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733047992] [2020-01-16 18:04:46,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:46,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733047992] [2020-01-16 18:04:46,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:46,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:46,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011856550] [2020-01-16 18:04:46,385 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:46,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:46,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:46,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:46,385 INFO L87 Difference]: Start difference. First operand 150 states and 417 transitions. Second operand 8 states. [2020-01-16 18:04:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:46,462 INFO L93 Difference]: Finished difference Result 230 states and 538 transitions. [2020-01-16 18:04:46,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:46,463 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:46,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:46,463 INFO L225 Difference]: With dead ends: 230 [2020-01-16 18:04:46,464 INFO L226 Difference]: Without dead ends: 216 [2020-01-16 18:04:46,464 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:46,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-01-16 18:04:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 154. [2020-01-16 18:04:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-01-16 18:04:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 425 transitions. [2020-01-16 18:04:46,468 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 425 transitions. Word has length 19 [2020-01-16 18:04:46,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:46,468 INFO L478 AbstractCegarLoop]: Abstraction has 154 states and 425 transitions. [2020-01-16 18:04:46,468 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 425 transitions. [2020-01-16 18:04:46,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:46,469 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:46,469 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:46,469 INFO L426 AbstractCegarLoop]: === Iteration 476 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:46,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:46,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1680190306, now seen corresponding path program 472 times [2020-01-16 18:04:46,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:46,470 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719450427] [2020-01-16 18:04:46,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:46,646 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719450427] [2020-01-16 18:04:46,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:46,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:46,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628394748] [2020-01-16 18:04:46,647 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:46,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:46,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:46,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:46,648 INFO L87 Difference]: Start difference. First operand 154 states and 425 transitions. Second operand 8 states. [2020-01-16 18:04:46,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:46,728 INFO L93 Difference]: Finished difference Result 219 states and 521 transitions. [2020-01-16 18:04:46,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:46,728 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:46,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:46,729 INFO L225 Difference]: With dead ends: 219 [2020-01-16 18:04:46,729 INFO L226 Difference]: Without dead ends: 203 [2020-01-16 18:04:46,729 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-01-16 18:04:46,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 150. [2020-01-16 18:04:46,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-01-16 18:04:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 415 transitions. [2020-01-16 18:04:46,733 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 415 transitions. Word has length 19 [2020-01-16 18:04:46,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:46,733 INFO L478 AbstractCegarLoop]: Abstraction has 150 states and 415 transitions. [2020-01-16 18:04:46,733 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:46,733 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 415 transitions. [2020-01-16 18:04:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:46,733 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:46,733 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:46,733 INFO L426 AbstractCegarLoop]: === Iteration 477 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:46,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:46,734 INFO L82 PathProgramCache]: Analyzing trace with hash -539877320, now seen corresponding path program 473 times [2020-01-16 18:04:46,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:46,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188829535] [2020-01-16 18:04:46,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:46,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188829535] [2020-01-16 18:04:46,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:46,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:46,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216163034] [2020-01-16 18:04:46,924 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:46,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:46,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:46,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:46,925 INFO L87 Difference]: Start difference. First operand 150 states and 415 transitions. Second operand 8 states. [2020-01-16 18:04:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:46,990 INFO L93 Difference]: Finished difference Result 215 states and 511 transitions. [2020-01-16 18:04:46,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:46,991 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:46,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:46,991 INFO L225 Difference]: With dead ends: 215 [2020-01-16 18:04:46,991 INFO L226 Difference]: Without dead ends: 205 [2020-01-16 18:04:46,992 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:46,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-01-16 18:04:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 152. [2020-01-16 18:04:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-01-16 18:04:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 418 transitions. [2020-01-16 18:04:46,996 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 418 transitions. Word has length 19 [2020-01-16 18:04:46,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:46,996 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 418 transitions. [2020-01-16 18:04:46,996 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:46,996 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 418 transitions. [2020-01-16 18:04:46,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:46,996 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:46,996 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:46,996 INFO L426 AbstractCegarLoop]: === Iteration 478 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:46,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:46,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1395183974, now seen corresponding path program 474 times [2020-01-16 18:04:46,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:46,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879507092] [2020-01-16 18:04:46,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:47,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879507092] [2020-01-16 18:04:47,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:47,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:47,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818868395] [2020-01-16 18:04:47,172 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:47,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:47,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:47,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:47,173 INFO L87 Difference]: Start difference. First operand 152 states and 418 transitions. Second operand 8 states. [2020-01-16 18:04:47,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:47,248 INFO L93 Difference]: Finished difference Result 204 states and 497 transitions. [2020-01-16 18:04:47,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:47,248 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:47,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:47,249 INFO L225 Difference]: With dead ends: 204 [2020-01-16 18:04:47,249 INFO L226 Difference]: Without dead ends: 188 [2020-01-16 18:04:47,249 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:47,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-01-16 18:04:47,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 148. [2020-01-16 18:04:47,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-01-16 18:04:47,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 411 transitions. [2020-01-16 18:04:47,253 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 411 transitions. Word has length 19 [2020-01-16 18:04:47,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:47,253 INFO L478 AbstractCegarLoop]: Abstraction has 148 states and 411 transitions. [2020-01-16 18:04:47,253 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:47,253 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 411 transitions. [2020-01-16 18:04:47,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:47,253 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:47,254 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:47,254 INFO L426 AbstractCegarLoop]: === Iteration 479 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:47,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:47,254 INFO L82 PathProgramCache]: Analyzing trace with hash 266504132, now seen corresponding path program 475 times [2020-01-16 18:04:47,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:47,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670989770] [2020-01-16 18:04:47,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:47,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670989770] [2020-01-16 18:04:47,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:47,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:47,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362749323] [2020-01-16 18:04:47,456 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:47,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:47,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:47,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:47,457 INFO L87 Difference]: Start difference. First operand 148 states and 411 transitions. Second operand 8 states. [2020-01-16 18:04:47,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:47,535 INFO L93 Difference]: Finished difference Result 213 states and 507 transitions. [2020-01-16 18:04:47,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:47,536 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:47,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:47,536 INFO L225 Difference]: With dead ends: 213 [2020-01-16 18:04:47,536 INFO L226 Difference]: Without dead ends: 203 [2020-01-16 18:04:47,537 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:47,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-01-16 18:04:47,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 150. [2020-01-16 18:04:47,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-01-16 18:04:47,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 415 transitions. [2020-01-16 18:04:47,540 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 415 transitions. Word has length 19 [2020-01-16 18:04:47,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:47,540 INFO L478 AbstractCegarLoop]: Abstraction has 150 states and 415 transitions. [2020-01-16 18:04:47,540 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:47,540 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 415 transitions. [2020-01-16 18:04:47,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:47,540 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:47,540 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:47,540 INFO L426 AbstractCegarLoop]: === Iteration 480 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:47,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:47,541 INFO L82 PathProgramCache]: Analyzing trace with hash 26861794, now seen corresponding path program 476 times [2020-01-16 18:04:47,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:47,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301903103] [2020-01-16 18:04:47,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:47,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301903103] [2020-01-16 18:04:47,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:47,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:47,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296102723] [2020-01-16 18:04:47,747 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:47,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:47,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:47,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:47,748 INFO L87 Difference]: Start difference. First operand 150 states and 415 transitions. Second operand 8 states. [2020-01-16 18:04:47,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:47,810 INFO L93 Difference]: Finished difference Result 213 states and 506 transitions. [2020-01-16 18:04:47,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:47,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:47,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:47,811 INFO L225 Difference]: With dead ends: 213 [2020-01-16 18:04:47,811 INFO L226 Difference]: Without dead ends: 202 [2020-01-16 18:04:47,811 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:47,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-01-16 18:04:47,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 149. [2020-01-16 18:04:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-01-16 18:04:47,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 413 transitions. [2020-01-16 18:04:47,815 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 413 transitions. Word has length 19 [2020-01-16 18:04:47,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:47,815 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 413 transitions. [2020-01-16 18:04:47,815 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:47,815 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 413 transitions. [2020-01-16 18:04:47,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:47,815 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:47,815 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:47,816 INFO L426 AbstractCegarLoop]: === Iteration 481 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:47,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:47,816 INFO L82 PathProgramCache]: Analyzing trace with hash -478198366, now seen corresponding path program 477 times [2020-01-16 18:04:47,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:47,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622183026] [2020-01-16 18:04:47,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:48,011 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622183026] [2020-01-16 18:04:48,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:48,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:48,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523883713] [2020-01-16 18:04:48,012 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:48,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:48,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:48,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:48,012 INFO L87 Difference]: Start difference. First operand 149 states and 413 transitions. Second operand 8 states. [2020-01-16 18:04:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:48,091 INFO L93 Difference]: Finished difference Result 210 states and 501 transitions. [2020-01-16 18:04:48,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:48,091 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:48,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:48,092 INFO L225 Difference]: With dead ends: 210 [2020-01-16 18:04:48,092 INFO L226 Difference]: Without dead ends: 200 [2020-01-16 18:04:48,092 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:48,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-01-16 18:04:48,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 151. [2020-01-16 18:04:48,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-01-16 18:04:48,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 416 transitions. [2020-01-16 18:04:48,096 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 416 transitions. Word has length 19 [2020-01-16 18:04:48,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:48,096 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 416 transitions. [2020-01-16 18:04:48,096 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:48,096 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 416 transitions. [2020-01-16 18:04:48,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:48,097 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:48,097 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:48,097 INFO L426 AbstractCegarLoop]: === Iteration 482 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:48,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:48,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1232414942, now seen corresponding path program 478 times [2020-01-16 18:04:48,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:48,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32135860] [2020-01-16 18:04:48,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:48,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32135860] [2020-01-16 18:04:48,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:48,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:48,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62752237] [2020-01-16 18:04:48,293 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:48,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:48,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:48,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:48,293 INFO L87 Difference]: Start difference. First operand 151 states and 416 transitions. Second operand 8 states. [2020-01-16 18:04:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:48,370 INFO L93 Difference]: Finished difference Result 203 states and 495 transitions. [2020-01-16 18:04:48,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:48,371 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:48,371 INFO L225 Difference]: With dead ends: 203 [2020-01-16 18:04:48,372 INFO L226 Difference]: Without dead ends: 189 [2020-01-16 18:04:48,372 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:48,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-01-16 18:04:48,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 149. [2020-01-16 18:04:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-01-16 18:04:48,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 412 transitions. [2020-01-16 18:04:48,375 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 412 transitions. Word has length 19 [2020-01-16 18:04:48,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:48,375 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 412 transitions. [2020-01-16 18:04:48,375 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:48,375 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 412 transitions. [2020-01-16 18:04:48,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:48,376 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:48,376 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:48,376 INFO L426 AbstractCegarLoop]: === Iteration 483 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:48,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:48,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1046223586, now seen corresponding path program 479 times [2020-01-16 18:04:48,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:48,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164612679] [2020-01-16 18:04:48,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:48,578 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164612679] [2020-01-16 18:04:48,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:48,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:48,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023737812] [2020-01-16 18:04:48,578 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:48,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:48,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:48,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:48,579 INFO L87 Difference]: Start difference. First operand 149 states and 412 transitions. Second operand 8 states. [2020-01-16 18:04:48,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:48,639 INFO L93 Difference]: Finished difference Result 197 states and 483 transitions. [2020-01-16 18:04:48,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:48,639 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:48,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:48,640 INFO L225 Difference]: With dead ends: 197 [2020-01-16 18:04:48,640 INFO L226 Difference]: Without dead ends: 187 [2020-01-16 18:04:48,640 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-01-16 18:04:48,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 151. [2020-01-16 18:04:48,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-01-16 18:04:48,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 415 transitions. [2020-01-16 18:04:48,643 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 415 transitions. Word has length 19 [2020-01-16 18:04:48,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:48,643 INFO L478 AbstractCegarLoop]: Abstraction has 151 states and 415 transitions. [2020-01-16 18:04:48,643 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:48,643 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 415 transitions. [2020-01-16 18:04:48,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:48,644 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:48,644 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:48,644 INFO L426 AbstractCegarLoop]: === Iteration 484 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:48,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:48,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1901530240, now seen corresponding path program 480 times [2020-01-16 18:04:48,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:48,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125739918] [2020-01-16 18:04:48,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:48,838 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125739918] [2020-01-16 18:04:48,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:48,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:48,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327343607] [2020-01-16 18:04:48,839 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:48,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:48,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:48,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:48,839 INFO L87 Difference]: Start difference. First operand 151 states and 415 transitions. Second operand 8 states. [2020-01-16 18:04:48,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:48,908 INFO L93 Difference]: Finished difference Result 186 states and 469 transitions. [2020-01-16 18:04:48,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:48,909 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:48,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:48,909 INFO L225 Difference]: With dead ends: 186 [2020-01-16 18:04:48,909 INFO L226 Difference]: Without dead ends: 167 [2020-01-16 18:04:48,909 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:48,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-01-16 18:04:48,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 144. [2020-01-16 18:04:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-01-16 18:04:48,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 404 transitions. [2020-01-16 18:04:48,912 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 404 transitions. Word has length 19 [2020-01-16 18:04:48,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:48,913 INFO L478 AbstractCegarLoop]: Abstraction has 144 states and 404 transitions. [2020-01-16 18:04:48,913 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:48,913 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 404 transitions. [2020-01-16 18:04:48,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:48,913 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:48,913 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:48,913 INFO L426 AbstractCegarLoop]: === Iteration 485 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:48,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:48,913 INFO L82 PathProgramCache]: Analyzing trace with hash -700822424, now seen corresponding path program 481 times [2020-01-16 18:04:48,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:48,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134008228] [2020-01-16 18:04:48,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:49,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134008228] [2020-01-16 18:04:49,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:49,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:49,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826119257] [2020-01-16 18:04:49,124 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:49,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:49,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:49,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:49,124 INFO L87 Difference]: Start difference. First operand 144 states and 404 transitions. Second operand 8 states. [2020-01-16 18:04:49,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:49,183 INFO L93 Difference]: Finished difference Result 244 states and 560 transitions. [2020-01-16 18:04:49,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:49,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:49,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:49,184 INFO L225 Difference]: With dead ends: 244 [2020-01-16 18:04:49,184 INFO L226 Difference]: Without dead ends: 228 [2020-01-16 18:04:49,184 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:49,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-01-16 18:04:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 149. [2020-01-16 18:04:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-01-16 18:04:49,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 414 transitions. [2020-01-16 18:04:49,188 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 414 transitions. Word has length 19 [2020-01-16 18:04:49,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:49,189 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 414 transitions. [2020-01-16 18:04:49,189 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:49,189 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 414 transitions. [2020-01-16 18:04:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:49,189 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:49,189 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:49,189 INFO L426 AbstractCegarLoop]: === Iteration 486 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:49,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:49,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1442418326, now seen corresponding path program 482 times [2020-01-16 18:04:49,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:49,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091507259] [2020-01-16 18:04:49,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:49,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091507259] [2020-01-16 18:04:49,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:49,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:49,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814019261] [2020-01-16 18:04:49,399 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:49,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:49,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:49,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:49,400 INFO L87 Difference]: Start difference. First operand 149 states and 414 transitions. Second operand 8 states. [2020-01-16 18:04:49,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:49,477 INFO L93 Difference]: Finished difference Result 238 states and 545 transitions. [2020-01-16 18:04:49,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:49,478 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:49,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:49,478 INFO L225 Difference]: With dead ends: 238 [2020-01-16 18:04:49,478 INFO L226 Difference]: Without dead ends: 225 [2020-01-16 18:04:49,479 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:49,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-01-16 18:04:49,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 146. [2020-01-16 18:04:49,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-01-16 18:04:49,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 408 transitions. [2020-01-16 18:04:49,483 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 408 transitions. Word has length 19 [2020-01-16 18:04:49,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:49,483 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 408 transitions. [2020-01-16 18:04:49,483 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 408 transitions. [2020-01-16 18:04:49,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:49,483 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:49,483 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:49,483 INFO L426 AbstractCegarLoop]: === Iteration 487 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:49,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:49,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1993707018, now seen corresponding path program 483 times [2020-01-16 18:04:49,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:49,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587251027] [2020-01-16 18:04:49,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:49,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587251027] [2020-01-16 18:04:49,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:49,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:49,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89157447] [2020-01-16 18:04:49,707 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:49,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:49,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:49,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:49,707 INFO L87 Difference]: Start difference. First operand 146 states and 408 transitions. Second operand 8 states. [2020-01-16 18:04:49,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:49,762 INFO L93 Difference]: Finished difference Result 244 states and 558 transitions. [2020-01-16 18:04:49,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:49,762 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:49,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:49,763 INFO L225 Difference]: With dead ends: 244 [2020-01-16 18:04:49,763 INFO L226 Difference]: Without dead ends: 228 [2020-01-16 18:04:49,763 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:49,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-01-16 18:04:49,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 149. [2020-01-16 18:04:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-01-16 18:04:49,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 412 transitions. [2020-01-16 18:04:49,767 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 412 transitions. Word has length 19 [2020-01-16 18:04:49,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:49,768 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 412 transitions. [2020-01-16 18:04:49,768 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:49,768 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 412 transitions. [2020-01-16 18:04:49,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:49,768 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:49,768 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:49,768 INFO L426 AbstractCegarLoop]: === Iteration 488 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:49,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:49,768 INFO L82 PathProgramCache]: Analyzing trace with hash -2042202052, now seen corresponding path program 484 times [2020-01-16 18:04:49,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:49,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138108433] [2020-01-16 18:04:49,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:49,967 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138108433] [2020-01-16 18:04:49,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:49,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:49,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208155157] [2020-01-16 18:04:49,968 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:49,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:49,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:49,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:49,969 INFO L87 Difference]: Start difference. First operand 149 states and 412 transitions. Second operand 8 states. [2020-01-16 18:04:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:50,030 INFO L93 Difference]: Finished difference Result 238 states and 543 transitions. [2020-01-16 18:04:50,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:50,031 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:50,031 INFO L225 Difference]: With dead ends: 238 [2020-01-16 18:04:50,031 INFO L226 Difference]: Without dead ends: 225 [2020-01-16 18:04:50,032 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:50,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-01-16 18:04:50,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 146. [2020-01-16 18:04:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-01-16 18:04:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 406 transitions. [2020-01-16 18:04:50,035 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 406 transitions. Word has length 19 [2020-01-16 18:04:50,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:50,035 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 406 transitions. [2020-01-16 18:04:50,035 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:50,036 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 406 transitions. [2020-01-16 18:04:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:50,036 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:50,036 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:50,036 INFO L426 AbstractCegarLoop]: === Iteration 489 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:50,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:50,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1012326922, now seen corresponding path program 485 times [2020-01-16 18:04:50,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:50,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259466791] [2020-01-16 18:04:50,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:50,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:50,250 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259466791] [2020-01-16 18:04:50,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:50,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:50,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371128200] [2020-01-16 18:04:50,251 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:50,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:50,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:50,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:50,252 INFO L87 Difference]: Start difference. First operand 146 states and 406 transitions. Second operand 8 states. [2020-01-16 18:04:50,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:50,330 INFO L93 Difference]: Finished difference Result 230 states and 527 transitions. [2020-01-16 18:04:50,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:50,330 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:50,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:50,331 INFO L225 Difference]: With dead ends: 230 [2020-01-16 18:04:50,331 INFO L226 Difference]: Without dead ends: 220 [2020-01-16 18:04:50,331 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:50,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-01-16 18:04:50,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 147. [2020-01-16 18:04:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-01-16 18:04:50,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 407 transitions. [2020-01-16 18:04:50,335 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 407 transitions. Word has length 19 [2020-01-16 18:04:50,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:50,335 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 407 transitions. [2020-01-16 18:04:50,335 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:50,335 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 407 transitions. [2020-01-16 18:04:50,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:50,336 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:50,336 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:50,336 INFO L426 AbstractCegarLoop]: === Iteration 490 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:50,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:50,336 INFO L82 PathProgramCache]: Analyzing trace with hash 772684584, now seen corresponding path program 486 times [2020-01-16 18:04:50,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:50,336 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376653056] [2020-01-16 18:04:50,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:50,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:50,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376653056] [2020-01-16 18:04:50,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:50,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:50,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642827401] [2020-01-16 18:04:50,552 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:50,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:50,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:50,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:50,552 INFO L87 Difference]: Start difference. First operand 147 states and 407 transitions. Second operand 8 states. [2020-01-16 18:04:50,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:50,612 INFO L93 Difference]: Finished difference Result 230 states and 526 transitions. [2020-01-16 18:04:50,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:50,613 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:50,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:50,613 INFO L225 Difference]: With dead ends: 230 [2020-01-16 18:04:50,613 INFO L226 Difference]: Without dead ends: 217 [2020-01-16 18:04:50,614 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:50,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-01-16 18:04:50,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 144. [2020-01-16 18:04:50,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-01-16 18:04:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 402 transitions. [2020-01-16 18:04:50,617 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 402 transitions. Word has length 19 [2020-01-16 18:04:50,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:50,617 INFO L478 AbstractCegarLoop]: Abstraction has 144 states and 402 transitions. [2020-01-16 18:04:50,617 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 402 transitions. [2020-01-16 18:04:50,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:50,618 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:50,618 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:50,618 INFO L426 AbstractCegarLoop]: === Iteration 491 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:50,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:50,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1225211654, now seen corresponding path program 487 times [2020-01-16 18:04:50,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:50,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317382770] [2020-01-16 18:04:50,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:50,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317382770] [2020-01-16 18:04:50,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:50,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:50,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542612031] [2020-01-16 18:04:50,824 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:50,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:50,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:50,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:50,824 INFO L87 Difference]: Start difference. First operand 144 states and 402 transitions. Second operand 8 states. [2020-01-16 18:04:50,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:50,885 INFO L93 Difference]: Finished difference Result 250 states and 577 transitions. [2020-01-16 18:04:50,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:50,885 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:50,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:50,886 INFO L225 Difference]: With dead ends: 250 [2020-01-16 18:04:50,886 INFO L226 Difference]: Without dead ends: 234 [2020-01-16 18:04:50,886 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:50,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-01-16 18:04:50,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 150. [2020-01-16 18:04:50,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-01-16 18:04:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 416 transitions. [2020-01-16 18:04:50,889 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 416 transitions. Word has length 19 [2020-01-16 18:04:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:50,889 INFO L478 AbstractCegarLoop]: Abstraction has 150 states and 416 transitions. [2020-01-16 18:04:50,889 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 416 transitions. [2020-01-16 18:04:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:50,890 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:50,890 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:50,890 INFO L426 AbstractCegarLoop]: === Iteration 492 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:50,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:50,890 INFO L82 PathProgramCache]: Analyzing trace with hash -926514892, now seen corresponding path program 488 times [2020-01-16 18:04:50,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:50,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820580330] [2020-01-16 18:04:50,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:51,096 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820580330] [2020-01-16 18:04:51,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:51,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:51,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510755386] [2020-01-16 18:04:51,097 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:51,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:51,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:51,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:51,098 INFO L87 Difference]: Start difference. First operand 150 states and 416 transitions. Second operand 8 states. [2020-01-16 18:04:51,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:51,179 INFO L93 Difference]: Finished difference Result 244 states and 562 transitions. [2020-01-16 18:04:51,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:51,180 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:51,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:51,180 INFO L225 Difference]: With dead ends: 244 [2020-01-16 18:04:51,180 INFO L226 Difference]: Without dead ends: 231 [2020-01-16 18:04:51,181 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:51,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-01-16 18:04:51,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 147. [2020-01-16 18:04:51,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-01-16 18:04:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 409 transitions. [2020-01-16 18:04:51,184 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 409 transitions. Word has length 19 [2020-01-16 18:04:51,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:51,185 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 409 transitions. [2020-01-16 18:04:51,185 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:51,185 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 409 transitions. [2020-01-16 18:04:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:51,185 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:51,185 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:51,185 INFO L426 AbstractCegarLoop]: === Iteration 493 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:51,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:51,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1975664054, now seen corresponding path program 489 times [2020-01-16 18:04:51,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:51,186 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065450895] [2020-01-16 18:04:51,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:51,395 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065450895] [2020-01-16 18:04:51,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:51,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:51,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303530360] [2020-01-16 18:04:51,396 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:51,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:51,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:51,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:51,396 INFO L87 Difference]: Start difference. First operand 147 states and 409 transitions. Second operand 8 states. [2020-01-16 18:04:51,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:51,454 INFO L93 Difference]: Finished difference Result 254 states and 586 transitions. [2020-01-16 18:04:51,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:51,455 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:51,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:51,456 INFO L225 Difference]: With dead ends: 254 [2020-01-16 18:04:51,456 INFO L226 Difference]: Without dead ends: 238 [2020-01-16 18:04:51,456 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:51,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-01-16 18:04:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 152. [2020-01-16 18:04:51,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-01-16 18:04:51,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 418 transitions. [2020-01-16 18:04:51,460 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 418 transitions. Word has length 19 [2020-01-16 18:04:51,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:51,460 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 418 transitions. [2020-01-16 18:04:51,460 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 418 transitions. [2020-01-16 18:04:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:51,460 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:51,460 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:51,461 INFO L426 AbstractCegarLoop]: === Iteration 494 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:51,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:51,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1568241148, now seen corresponding path program 490 times [2020-01-16 18:04:51,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:51,461 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512984271] [2020-01-16 18:04:51,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:51,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512984271] [2020-01-16 18:04:51,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:51,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:51,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738998206] [2020-01-16 18:04:51,671 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:51,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:51,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:51,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:51,671 INFO L87 Difference]: Start difference. First operand 152 states and 418 transitions. Second operand 8 states. [2020-01-16 18:04:51,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:51,747 INFO L93 Difference]: Finished difference Result 250 states and 574 transitions. [2020-01-16 18:04:51,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:51,747 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:51,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:51,748 INFO L225 Difference]: With dead ends: 250 [2020-01-16 18:04:51,748 INFO L226 Difference]: Without dead ends: 233 [2020-01-16 18:04:51,748 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:51,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-01-16 18:04:51,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 147. [2020-01-16 18:04:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-01-16 18:04:51,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 406 transitions. [2020-01-16 18:04:51,753 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 406 transitions. Word has length 19 [2020-01-16 18:04:51,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:51,753 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 406 transitions. [2020-01-16 18:04:51,753 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 406 transitions. [2020-01-16 18:04:51,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:51,753 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:51,753 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:51,754 INFO L426 AbstractCegarLoop]: === Iteration 495 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:51,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:51,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1566078992, now seen corresponding path program 491 times [2020-01-16 18:04:51,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:51,754 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442855866] [2020-01-16 18:04:51,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:51,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442855866] [2020-01-16 18:04:51,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:51,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:51,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404370386] [2020-01-16 18:04:51,962 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:51,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:51,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:51,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:51,963 INFO L87 Difference]: Start difference. First operand 147 states and 406 transitions. Second operand 8 states. [2020-01-16 18:04:52,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:52,042 INFO L93 Difference]: Finished difference Result 239 states and 550 transitions. [2020-01-16 18:04:52,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:52,043 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:52,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:52,043 INFO L225 Difference]: With dead ends: 239 [2020-01-16 18:04:52,044 INFO L226 Difference]: Without dead ends: 229 [2020-01-16 18:04:52,044 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:52,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-01-16 18:04:52,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 149. [2020-01-16 18:04:52,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-01-16 18:04:52,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 409 transitions. [2020-01-16 18:04:52,048 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 409 transitions. Word has length 19 [2020-01-16 18:04:52,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:52,048 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 409 transitions. [2020-01-16 18:04:52,048 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:52,048 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 409 transitions. [2020-01-16 18:04:52,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:52,048 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:52,048 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:52,048 INFO L426 AbstractCegarLoop]: === Iteration 496 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:52,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:52,049 INFO L82 PathProgramCache]: Analyzing trace with hash 144534316, now seen corresponding path program 492 times [2020-01-16 18:04:52,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:52,049 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120439703] [2020-01-16 18:04:52,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:52,254 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120439703] [2020-01-16 18:04:52,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:52,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:52,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759228645] [2020-01-16 18:04:52,255 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:52,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:52,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:52,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:52,256 INFO L87 Difference]: Start difference. First operand 149 states and 409 transitions. Second operand 8 states. [2020-01-16 18:04:52,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:52,344 INFO L93 Difference]: Finished difference Result 241 states and 553 transitions. [2020-01-16 18:04:52,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:52,344 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:52,345 INFO L225 Difference]: With dead ends: 241 [2020-01-16 18:04:52,345 INFO L226 Difference]: Without dead ends: 224 [2020-01-16 18:04:52,345 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:52,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-01-16 18:04:52,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 144. [2020-01-16 18:04:52,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-01-16 18:04:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 400 transitions. [2020-01-16 18:04:52,349 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 400 transitions. Word has length 19 [2020-01-16 18:04:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:52,349 INFO L478 AbstractCegarLoop]: Abstraction has 144 states and 400 transitions. [2020-01-16 18:04:52,349 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:52,349 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 400 transitions. [2020-01-16 18:04:52,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:52,349 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:52,349 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:52,349 INFO L426 AbstractCegarLoop]: === Iteration 497 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:52,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:52,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1550807878, now seen corresponding path program 493 times [2020-01-16 18:04:52,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:52,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732736727] [2020-01-16 18:04:52,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:52,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732736727] [2020-01-16 18:04:52,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:52,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:52,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147781356] [2020-01-16 18:04:52,563 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:52,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:52,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:52,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:52,563 INFO L87 Difference]: Start difference. First operand 144 states and 400 transitions. Second operand 8 states. [2020-01-16 18:04:52,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:52,628 INFO L93 Difference]: Finished difference Result 250 states and 575 transitions. [2020-01-16 18:04:52,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:52,628 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:52,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:52,629 INFO L225 Difference]: With dead ends: 250 [2020-01-16 18:04:52,629 INFO L226 Difference]: Without dead ends: 234 [2020-01-16 18:04:52,629 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:52,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-01-16 18:04:52,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 150. [2020-01-16 18:04:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-01-16 18:04:52,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 414 transitions. [2020-01-16 18:04:52,633 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 414 transitions. Word has length 19 [2020-01-16 18:04:52,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:52,633 INFO L478 AbstractCegarLoop]: Abstraction has 150 states and 414 transitions. [2020-01-16 18:04:52,633 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:52,633 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 414 transitions. [2020-01-16 18:04:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:52,634 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:52,634 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:52,634 INFO L426 AbstractCegarLoop]: === Iteration 498 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:52,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:52,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1809866104, now seen corresponding path program 494 times [2020-01-16 18:04:52,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:52,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835181113] [2020-01-16 18:04:52,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:52,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:52,846 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835181113] [2020-01-16 18:04:52,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:52,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:52,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447778889] [2020-01-16 18:04:52,846 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:52,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:52,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:52,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:52,847 INFO L87 Difference]: Start difference. First operand 150 states and 414 transitions. Second operand 8 states. [2020-01-16 18:04:52,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:52,912 INFO L93 Difference]: Finished difference Result 244 states and 560 transitions. [2020-01-16 18:04:52,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:52,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:52,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:52,913 INFO L225 Difference]: With dead ends: 244 [2020-01-16 18:04:52,913 INFO L226 Difference]: Without dead ends: 231 [2020-01-16 18:04:52,914 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-01-16 18:04:52,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 147. [2020-01-16 18:04:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-01-16 18:04:52,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 407 transitions. [2020-01-16 18:04:52,918 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 407 transitions. Word has length 19 [2020-01-16 18:04:52,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:52,918 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 407 transitions. [2020-01-16 18:04:52,918 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:52,918 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 407 transitions. [2020-01-16 18:04:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:52,918 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:52,918 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:52,919 INFO L426 AbstractCegarLoop]: === Iteration 499 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:52,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:52,919 INFO L82 PathProgramCache]: Analyzing trace with hash -49629976, now seen corresponding path program 495 times [2020-01-16 18:04:52,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:52,919 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326155679] [2020-01-16 18:04:52,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:53,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326155679] [2020-01-16 18:04:53,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:53,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:53,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313835280] [2020-01-16 18:04:53,130 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:53,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:53,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:53,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:53,131 INFO L87 Difference]: Start difference. First operand 147 states and 407 transitions. Second operand 8 states. [2020-01-16 18:04:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:53,199 INFO L93 Difference]: Finished difference Result 254 states and 584 transitions. [2020-01-16 18:04:53,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:53,199 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:53,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:53,200 INFO L225 Difference]: With dead ends: 254 [2020-01-16 18:04:53,200 INFO L226 Difference]: Without dead ends: 238 [2020-01-16 18:04:53,200 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-01-16 18:04:53,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 152. [2020-01-16 18:04:53,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-01-16 18:04:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 416 transitions. [2020-01-16 18:04:53,203 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 416 transitions. Word has length 19 [2020-01-16 18:04:53,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:53,203 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 416 transitions. [2020-01-16 18:04:53,203 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:53,204 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 416 transitions. [2020-01-16 18:04:53,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:53,204 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:53,204 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:53,204 INFO L426 AbstractCegarLoop]: === Iteration 500 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:53,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:53,204 INFO L82 PathProgramCache]: Analyzing trace with hash -800692070, now seen corresponding path program 496 times [2020-01-16 18:04:53,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:53,204 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141159035] [2020-01-16 18:04:53,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:53,414 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141159035] [2020-01-16 18:04:53,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:53,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:53,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841102800] [2020-01-16 18:04:53,415 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:53,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:53,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:53,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:53,415 INFO L87 Difference]: Start difference. First operand 152 states and 416 transitions. Second operand 8 states. [2020-01-16 18:04:53,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:53,501 INFO L93 Difference]: Finished difference Result 250 states and 572 transitions. [2020-01-16 18:04:53,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:53,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:53,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:53,502 INFO L225 Difference]: With dead ends: 250 [2020-01-16 18:04:53,502 INFO L226 Difference]: Without dead ends: 233 [2020-01-16 18:04:53,502 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:53,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-01-16 18:04:53,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 147. [2020-01-16 18:04:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-01-16 18:04:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 404 transitions. [2020-01-16 18:04:53,506 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 404 transitions. Word has length 19 [2020-01-16 18:04:53,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:53,506 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 404 transitions. [2020-01-16 18:04:53,506 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:53,506 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 404 transitions. [2020-01-16 18:04:53,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:53,506 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:53,506 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:53,506 INFO L426 AbstractCegarLoop]: === Iteration 501 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:53,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:53,507 INFO L82 PathProgramCache]: Analyzing trace with hash 350791652, now seen corresponding path program 497 times [2020-01-16 18:04:53,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:53,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310668403] [2020-01-16 18:04:53,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:53,721 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310668403] [2020-01-16 18:04:53,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:53,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:53,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163862852] [2020-01-16 18:04:53,721 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:53,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:53,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:53,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:53,722 INFO L87 Difference]: Start difference. First operand 147 states and 404 transitions. Second operand 8 states. [2020-01-16 18:04:53,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:53,789 INFO L93 Difference]: Finished difference Result 239 states and 548 transitions. [2020-01-16 18:04:53,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:53,790 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:53,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:53,790 INFO L225 Difference]: With dead ends: 239 [2020-01-16 18:04:53,790 INFO L226 Difference]: Without dead ends: 229 [2020-01-16 18:04:53,791 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:53,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-01-16 18:04:53,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 149. [2020-01-16 18:04:53,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-01-16 18:04:53,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 407 transitions. [2020-01-16 18:04:53,794 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 407 transitions. Word has length 19 [2020-01-16 18:04:53,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:53,794 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 407 transitions. [2020-01-16 18:04:53,794 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:53,794 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 407 transitions. [2020-01-16 18:04:53,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:53,795 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:53,795 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:53,795 INFO L426 AbstractCegarLoop]: === Iteration 502 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:53,795 INFO L82 PathProgramCache]: Analyzing trace with hash -504515002, now seen corresponding path program 498 times [2020-01-16 18:04:53,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:53,795 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305686052] [2020-01-16 18:04:53,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:54,001 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305686052] [2020-01-16 18:04:54,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:54,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:54,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477526734] [2020-01-16 18:04:54,002 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:54,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:54,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:54,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:54,003 INFO L87 Difference]: Start difference. First operand 149 states and 407 transitions. Second operand 8 states. [2020-01-16 18:04:54,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:54,087 INFO L93 Difference]: Finished difference Result 241 states and 551 transitions. [2020-01-16 18:04:54,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:54,087 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:54,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:54,088 INFO L225 Difference]: With dead ends: 241 [2020-01-16 18:04:54,088 INFO L226 Difference]: Without dead ends: 224 [2020-01-16 18:04:54,088 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-01-16 18:04:54,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 144. [2020-01-16 18:04:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-01-16 18:04:54,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 398 transitions. [2020-01-16 18:04:54,092 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 398 transitions. Word has length 19 [2020-01-16 18:04:54,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:54,092 INFO L478 AbstractCegarLoop]: Abstraction has 144 states and 398 transitions. [2020-01-16 18:04:54,092 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:54,092 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 398 transitions. [2020-01-16 18:04:54,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:54,092 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:54,092 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:54,092 INFO L426 AbstractCegarLoop]: === Iteration 503 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:54,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:54,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1269308130, now seen corresponding path program 499 times [2020-01-16 18:04:54,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:54,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434255294] [2020-01-16 18:04:54,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:54,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:54,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434255294] [2020-01-16 18:04:54,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:54,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:54,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548295303] [2020-01-16 18:04:54,314 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:54,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:54,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:54,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:54,314 INFO L87 Difference]: Start difference. First operand 144 states and 398 transitions. Second operand 8 states. [2020-01-16 18:04:54,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:54,402 INFO L93 Difference]: Finished difference Result 223 states and 511 transitions. [2020-01-16 18:04:54,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:54,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:54,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:54,403 INFO L225 Difference]: With dead ends: 223 [2020-01-16 18:04:54,403 INFO L226 Difference]: Without dead ends: 213 [2020-01-16 18:04:54,403 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:54,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-01-16 18:04:54,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 146. [2020-01-16 18:04:54,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-01-16 18:04:54,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 402 transitions. [2020-01-16 18:04:54,407 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 402 transitions. Word has length 19 [2020-01-16 18:04:54,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:54,407 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 402 transitions. [2020-01-16 18:04:54,408 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:54,408 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 402 transitions. [2020-01-16 18:04:54,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:54,408 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:54,408 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:54,408 INFO L426 AbstractCegarLoop]: === Iteration 504 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:54,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:54,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1508950468, now seen corresponding path program 500 times [2020-01-16 18:04:54,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:54,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513217154] [2020-01-16 18:04:54,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:54,626 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513217154] [2020-01-16 18:04:54,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:54,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:54,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808966427] [2020-01-16 18:04:54,626 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:54,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:54,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:54,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:54,627 INFO L87 Difference]: Start difference. First operand 146 states and 402 transitions. Second operand 8 states. [2020-01-16 18:04:54,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:54,696 INFO L93 Difference]: Finished difference Result 223 states and 510 transitions. [2020-01-16 18:04:54,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:54,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:54,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:54,697 INFO L225 Difference]: With dead ends: 223 [2020-01-16 18:04:54,697 INFO L226 Difference]: Without dead ends: 212 [2020-01-16 18:04:54,697 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:54,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-01-16 18:04:54,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 145. [2020-01-16 18:04:54,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-01-16 18:04:54,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 400 transitions. [2020-01-16 18:04:54,701 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 400 transitions. Word has length 19 [2020-01-16 18:04:54,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:54,701 INFO L478 AbstractCegarLoop]: Abstraction has 145 states and 400 transitions. [2020-01-16 18:04:54,701 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:54,701 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 400 transitions. [2020-01-16 18:04:54,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:54,702 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:54,702 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:54,702 INFO L426 AbstractCegarLoop]: === Iteration 505 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:54,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:54,702 INFO L82 PathProgramCache]: Analyzing trace with hash -2014010628, now seen corresponding path program 501 times [2020-01-16 18:04:54,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:54,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250659751] [2020-01-16 18:04:54,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:54,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250659751] [2020-01-16 18:04:54,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:54,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:54,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148241410] [2020-01-16 18:04:54,913 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:54,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:54,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:54,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:54,913 INFO L87 Difference]: Start difference. First operand 145 states and 400 transitions. Second operand 8 states. [2020-01-16 18:04:55,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:55,002 INFO L93 Difference]: Finished difference Result 226 states and 518 transitions. [2020-01-16 18:04:55,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:55,003 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:55,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:55,003 INFO L225 Difference]: With dead ends: 226 [2020-01-16 18:04:55,003 INFO L226 Difference]: Without dead ends: 216 [2020-01-16 18:04:55,004 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:55,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-01-16 18:04:55,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 147. [2020-01-16 18:04:55,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-01-16 18:04:55,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 403 transitions. [2020-01-16 18:04:55,007 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 403 transitions. Word has length 19 [2020-01-16 18:04:55,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:55,008 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 403 transitions. [2020-01-16 18:04:55,008 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:55,008 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 403 transitions. [2020-01-16 18:04:55,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:55,008 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:55,008 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:55,008 INFO L426 AbstractCegarLoop]: === Iteration 506 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:55,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:55,009 INFO L82 PathProgramCache]: Analyzing trace with hash -303397320, now seen corresponding path program 502 times [2020-01-16 18:04:55,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:55,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845287602] [2020-01-16 18:04:55,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:55,220 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845287602] [2020-01-16 18:04:55,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:55,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:55,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803731172] [2020-01-16 18:04:55,221 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:55,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:55,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:55,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:55,221 INFO L87 Difference]: Start difference. First operand 147 states and 403 transitions. Second operand 8 states. [2020-01-16 18:04:55,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:55,310 INFO L93 Difference]: Finished difference Result 228 states and 521 transitions. [2020-01-16 18:04:55,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:55,311 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:55,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:55,311 INFO L225 Difference]: With dead ends: 228 [2020-01-16 18:04:55,311 INFO L226 Difference]: Without dead ends: 214 [2020-01-16 18:04:55,312 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:55,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-01-16 18:04:55,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 145. [2020-01-16 18:04:55,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-01-16 18:04:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 399 transitions. [2020-01-16 18:04:55,315 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 399 transitions. Word has length 19 [2020-01-16 18:04:55,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:55,315 INFO L478 AbstractCegarLoop]: Abstraction has 145 states and 399 transitions. [2020-01-16 18:04:55,315 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:55,315 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 399 transitions. [2020-01-16 18:04:55,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:55,316 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:55,316 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:55,316 INFO L426 AbstractCegarLoop]: === Iteration 507 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:55,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:55,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1712931448, now seen corresponding path program 503 times [2020-01-16 18:04:55,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:55,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434041532] [2020-01-16 18:04:55,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:55,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434041532] [2020-01-16 18:04:55,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:55,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:55,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727460368] [2020-01-16 18:04:55,553 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:55,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:55,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:55,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:55,554 INFO L87 Difference]: Start difference. First operand 145 states and 399 transitions. Second operand 8 states. [2020-01-16 18:04:55,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:55,628 INFO L93 Difference]: Finished difference Result 226 states and 517 transitions. [2020-01-16 18:04:55,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:55,628 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:55,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:55,629 INFO L225 Difference]: With dead ends: 226 [2020-01-16 18:04:55,629 INFO L226 Difference]: Without dead ends: 216 [2020-01-16 18:04:55,629 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:55,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-01-16 18:04:55,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 147. [2020-01-16 18:04:55,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-01-16 18:04:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 402 transitions. [2020-01-16 18:04:55,632 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 402 transitions. Word has length 19 [2020-01-16 18:04:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:55,633 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 402 transitions. [2020-01-16 18:04:55,633 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 402 transitions. [2020-01-16 18:04:55,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:55,633 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:55,633 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:55,633 INFO L426 AbstractCegarLoop]: === Iteration 508 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:55,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:55,633 INFO L82 PathProgramCache]: Analyzing trace with hash 857624794, now seen corresponding path program 504 times [2020-01-16 18:04:55,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:55,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763828211] [2020-01-16 18:04:55,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:55,854 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763828211] [2020-01-16 18:04:55,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:55,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:55,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430764797] [2020-01-16 18:04:55,855 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:55,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:55,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:55,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:55,855 INFO L87 Difference]: Start difference. First operand 147 states and 402 transitions. Second operand 8 states. [2020-01-16 18:04:55,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:55,946 INFO L93 Difference]: Finished difference Result 228 states and 520 transitions. [2020-01-16 18:04:55,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:55,947 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:55,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:55,947 INFO L225 Difference]: With dead ends: 228 [2020-01-16 18:04:55,947 INFO L226 Difference]: Without dead ends: 211 [2020-01-16 18:04:55,948 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:55,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-01-16 18:04:55,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 142. [2020-01-16 18:04:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-01-16 18:04:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 394 transitions. [2020-01-16 18:04:55,951 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 394 transitions. Word has length 19 [2020-01-16 18:04:55,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:55,952 INFO L478 AbstractCegarLoop]: Abstraction has 142 states and 394 transitions. [2020-01-16 18:04:55,952 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 394 transitions. [2020-01-16 18:04:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:55,952 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:55,952 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:55,952 INFO L426 AbstractCegarLoop]: === Iteration 509 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:55,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:55,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1123308150, now seen corresponding path program 505 times [2020-01-16 18:04:55,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:55,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179076512] [2020-01-16 18:04:55,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:56,145 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179076512] [2020-01-16 18:04:56,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:56,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:56,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295636688] [2020-01-16 18:04:56,145 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:56,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:56,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:56,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:56,146 INFO L87 Difference]: Start difference. First operand 142 states and 394 transitions. Second operand 8 states. [2020-01-16 18:04:56,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:56,211 INFO L93 Difference]: Finished difference Result 241 states and 546 transitions. [2020-01-16 18:04:56,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:56,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:56,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:56,212 INFO L225 Difference]: With dead ends: 241 [2020-01-16 18:04:56,212 INFO L226 Difference]: Without dead ends: 225 [2020-01-16 18:04:56,212 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:56,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-01-16 18:04:56,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 145. [2020-01-16 18:04:56,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-01-16 18:04:56,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 398 transitions. [2020-01-16 18:04:56,215 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 398 transitions. Word has length 19 [2020-01-16 18:04:56,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:56,216 INFO L478 AbstractCegarLoop]: Abstraction has 145 states and 398 transitions. [2020-01-16 18:04:56,216 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:56,216 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 398 transitions. [2020-01-16 18:04:56,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:56,216 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:56,216 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:56,216 INFO L426 AbstractCegarLoop]: === Iteration 510 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:56,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:56,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1019932600, now seen corresponding path program 506 times [2020-01-16 18:04:56,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:56,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292095416] [2020-01-16 18:04:56,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:56,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292095416] [2020-01-16 18:04:56,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:56,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:56,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903626445] [2020-01-16 18:04:56,401 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:56,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:56,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:56,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:56,402 INFO L87 Difference]: Start difference. First operand 145 states and 398 transitions. Second operand 8 states. [2020-01-16 18:04:56,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:56,481 INFO L93 Difference]: Finished difference Result 235 states and 531 transitions. [2020-01-16 18:04:56,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:56,481 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:56,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:56,482 INFO L225 Difference]: With dead ends: 235 [2020-01-16 18:04:56,482 INFO L226 Difference]: Without dead ends: 222 [2020-01-16 18:04:56,482 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:56,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-01-16 18:04:56,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 142. [2020-01-16 18:04:56,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-01-16 18:04:56,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 392 transitions. [2020-01-16 18:04:56,486 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 392 transitions. Word has length 19 [2020-01-16 18:04:56,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:56,486 INFO L478 AbstractCegarLoop]: Abstraction has 142 states and 392 transitions. [2020-01-16 18:04:56,486 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:56,486 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 392 transitions. [2020-01-16 18:04:56,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:56,486 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:56,486 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:56,487 INFO L426 AbstractCegarLoop]: === Iteration 511 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:56,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:56,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1571221292, now seen corresponding path program 507 times [2020-01-16 18:04:56,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:56,487 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429802562] [2020-01-16 18:04:56,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:56,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:56,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429802562] [2020-01-16 18:04:56,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:56,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:56,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892208782] [2020-01-16 18:04:56,685 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:56,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:56,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:56,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:56,686 INFO L87 Difference]: Start difference. First operand 142 states and 392 transitions. Second operand 8 states. [2020-01-16 18:04:56,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:56,741 INFO L93 Difference]: Finished difference Result 241 states and 544 transitions. [2020-01-16 18:04:56,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:56,742 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:56,742 INFO L225 Difference]: With dead ends: 241 [2020-01-16 18:04:56,742 INFO L226 Difference]: Without dead ends: 225 [2020-01-16 18:04:56,743 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-01-16 18:04:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 145. [2020-01-16 18:04:56,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-01-16 18:04:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 396 transitions. [2020-01-16 18:04:56,746 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 396 transitions. Word has length 19 [2020-01-16 18:04:56,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:56,747 INFO L478 AbstractCegarLoop]: Abstraction has 145 states and 396 transitions. [2020-01-16 18:04:56,747 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:56,747 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 396 transitions. [2020-01-16 18:04:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:56,747 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:56,747 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:56,747 INFO L426 AbstractCegarLoop]: === Iteration 512 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:56,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:56,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1830279518, now seen corresponding path program 508 times [2020-01-16 18:04:56,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:56,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038609829] [2020-01-16 18:04:56,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:56,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038609829] [2020-01-16 18:04:56,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:56,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:56,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651236847] [2020-01-16 18:04:56,956 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:56,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:56,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:56,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:56,957 INFO L87 Difference]: Start difference. First operand 145 states and 396 transitions. Second operand 8 states. [2020-01-16 18:04:57,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:57,032 INFO L93 Difference]: Finished difference Result 235 states and 529 transitions. [2020-01-16 18:04:57,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:57,033 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:57,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:57,033 INFO L225 Difference]: With dead ends: 235 [2020-01-16 18:04:57,033 INFO L226 Difference]: Without dead ends: 222 [2020-01-16 18:04:57,034 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-01-16 18:04:57,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 142. [2020-01-16 18:04:57,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-01-16 18:04:57,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 390 transitions. [2020-01-16 18:04:57,038 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 390 transitions. Word has length 19 [2020-01-16 18:04:57,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:57,038 INFO L478 AbstractCegarLoop]: Abstraction has 142 states and 390 transitions. [2020-01-16 18:04:57,038 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:57,038 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 390 transitions. [2020-01-16 18:04:57,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:57,039 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:57,039 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:57,039 INFO L426 AbstractCegarLoop]: === Iteration 513 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:57,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:57,039 INFO L82 PathProgramCache]: Analyzing trace with hash 589841196, now seen corresponding path program 509 times [2020-01-16 18:04:57,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:57,040 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394271323] [2020-01-16 18:04:57,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:57,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394271323] [2020-01-16 18:04:57,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:57,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:57,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383194862] [2020-01-16 18:04:57,253 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:57,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:57,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:57,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:57,253 INFO L87 Difference]: Start difference. First operand 142 states and 390 transitions. Second operand 8 states. [2020-01-16 18:04:57,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:57,335 INFO L93 Difference]: Finished difference Result 227 states and 513 transitions. [2020-01-16 18:04:57,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:57,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:57,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:57,336 INFO L225 Difference]: With dead ends: 227 [2020-01-16 18:04:57,336 INFO L226 Difference]: Without dead ends: 217 [2020-01-16 18:04:57,336 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:57,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-01-16 18:04:57,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 143. [2020-01-16 18:04:57,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-01-16 18:04:57,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 391 transitions. [2020-01-16 18:04:57,340 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 391 transitions. Word has length 19 [2020-01-16 18:04:57,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:57,340 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 391 transitions. [2020-01-16 18:04:57,340 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:57,340 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 391 transitions. [2020-01-16 18:04:57,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:57,340 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:57,340 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:57,341 INFO L426 AbstractCegarLoop]: === Iteration 514 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:57,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:57,341 INFO L82 PathProgramCache]: Analyzing trace with hash 350198858, now seen corresponding path program 510 times [2020-01-16 18:04:57,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:57,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590065713] [2020-01-16 18:04:57,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:57,545 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590065713] [2020-01-16 18:04:57,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:57,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:57,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766557556] [2020-01-16 18:04:57,545 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:57,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:57,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:57,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:57,546 INFO L87 Difference]: Start difference. First operand 143 states and 391 transitions. Second operand 8 states. [2020-01-16 18:04:57,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:57,615 INFO L93 Difference]: Finished difference Result 227 states and 512 transitions. [2020-01-16 18:04:57,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:57,615 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:57,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:57,616 INFO L225 Difference]: With dead ends: 227 [2020-01-16 18:04:57,616 INFO L226 Difference]: Without dead ends: 214 [2020-01-16 18:04:57,616 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:57,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-01-16 18:04:57,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 140. [2020-01-16 18:04:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-01-16 18:04:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 386 transitions. [2020-01-16 18:04:57,620 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 386 transitions. Word has length 19 [2020-01-16 18:04:57,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:57,620 INFO L478 AbstractCegarLoop]: Abstraction has 140 states and 386 transitions. [2020-01-16 18:04:57,620 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:57,621 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 386 transitions. [2020-01-16 18:04:57,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:57,621 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:57,621 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:57,621 INFO L426 AbstractCegarLoop]: === Iteration 515 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:57,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:57,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1566207290, now seen corresponding path program 511 times [2020-01-16 18:04:57,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:57,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363918904] [2020-01-16 18:04:57,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:57,801 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363918904] [2020-01-16 18:04:57,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:57,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:57,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967602645] [2020-01-16 18:04:57,802 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:57,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:57,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:57,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:57,802 INFO L87 Difference]: Start difference. First operand 140 states and 386 transitions. Second operand 8 states. [2020-01-16 18:04:57,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:57,867 INFO L93 Difference]: Finished difference Result 246 states and 561 transitions. [2020-01-16 18:04:57,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:57,868 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:57,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:57,868 INFO L225 Difference]: With dead ends: 246 [2020-01-16 18:04:57,868 INFO L226 Difference]: Without dead ends: 230 [2020-01-16 18:04:57,868 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:57,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-01-16 18:04:57,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 146. [2020-01-16 18:04:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-01-16 18:04:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 400 transitions. [2020-01-16 18:04:57,872 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 400 transitions. Word has length 19 [2020-01-16 18:04:57,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:57,872 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 400 transitions. [2020-01-16 18:04:57,872 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:57,872 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 400 transitions. [2020-01-16 18:04:57,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:57,872 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:57,872 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:57,872 INFO L426 AbstractCegarLoop]: === Iteration 516 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:57,873 INFO L82 PathProgramCache]: Analyzing trace with hash 577033460, now seen corresponding path program 512 times [2020-01-16 18:04:57,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:57,873 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664223288] [2020-01-16 18:04:57,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:58,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664223288] [2020-01-16 18:04:58,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:58,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:58,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952804591] [2020-01-16 18:04:58,048 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:58,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:58,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:58,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:58,049 INFO L87 Difference]: Start difference. First operand 146 states and 400 transitions. Second operand 8 states. [2020-01-16 18:04:58,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:58,131 INFO L93 Difference]: Finished difference Result 240 states and 546 transitions. [2020-01-16 18:04:58,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:58,132 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:58,132 INFO L225 Difference]: With dead ends: 240 [2020-01-16 18:04:58,132 INFO L226 Difference]: Without dead ends: 227 [2020-01-16 18:04:58,132 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:58,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-01-16 18:04:58,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 143. [2020-01-16 18:04:58,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-01-16 18:04:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 393 transitions. [2020-01-16 18:04:58,136 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 393 transitions. Word has length 19 [2020-01-16 18:04:58,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:58,136 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 393 transitions. [2020-01-16 18:04:58,136 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:58,136 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 393 transitions. [2020-01-16 18:04:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:58,136 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:58,136 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:58,137 INFO L426 AbstractCegarLoop]: === Iteration 517 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:58,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:58,137 INFO L82 PathProgramCache]: Analyzing trace with hash -2072553556, now seen corresponding path program 513 times [2020-01-16 18:04:58,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:58,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476060504] [2020-01-16 18:04:58,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:58,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476060504] [2020-01-16 18:04:58,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:58,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:58,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597540841] [2020-01-16 18:04:58,322 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:58,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:58,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:58,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:58,323 INFO L87 Difference]: Start difference. First operand 143 states and 393 transitions. Second operand 8 states. [2020-01-16 18:04:58,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:58,391 INFO L93 Difference]: Finished difference Result 244 states and 560 transitions. [2020-01-16 18:04:58,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:58,391 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:58,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:58,392 INFO L225 Difference]: With dead ends: 244 [2020-01-16 18:04:58,392 INFO L226 Difference]: Without dead ends: 228 [2020-01-16 18:04:58,392 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:58,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-01-16 18:04:58,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 149. [2020-01-16 18:04:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-01-16 18:04:58,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 404 transitions. [2020-01-16 18:04:58,396 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 404 transitions. Word has length 19 [2020-01-16 18:04:58,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:58,396 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 404 transitions. [2020-01-16 18:04:58,396 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:58,396 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 404 transitions. [2020-01-16 18:04:58,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:58,396 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:58,396 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:58,396 INFO L426 AbstractCegarLoop]: === Iteration 518 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:58,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:58,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1246208990, now seen corresponding path program 514 times [2020-01-16 18:04:58,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:58,397 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311210060] [2020-01-16 18:04:58,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:58,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311210060] [2020-01-16 18:04:58,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:58,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:58,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59264802] [2020-01-16 18:04:58,580 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:58,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:58,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:58,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:58,580 INFO L87 Difference]: Start difference. First operand 149 states and 404 transitions. Second operand 8 states. [2020-01-16 18:04:58,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:58,664 INFO L93 Difference]: Finished difference Result 232 states and 540 transitions. [2020-01-16 18:04:58,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:58,665 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:58,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:58,665 INFO L225 Difference]: With dead ends: 232 [2020-01-16 18:04:58,665 INFO L226 Difference]: Without dead ends: 213 [2020-01-16 18:04:58,665 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:58,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-01-16 18:04:58,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 143. [2020-01-16 18:04:58,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-01-16 18:04:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 390 transitions. [2020-01-16 18:04:58,669 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 390 transitions. Word has length 19 [2020-01-16 18:04:58,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:58,669 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 390 transitions. [2020-01-16 18:04:58,669 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:58,669 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 390 transitions. [2020-01-16 18:04:58,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:58,670 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:58,670 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:58,670 INFO L426 AbstractCegarLoop]: === Iteration 519 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:58,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:58,670 INFO L82 PathProgramCache]: Analyzing trace with hash 692674962, now seen corresponding path program 515 times [2020-01-16 18:04:58,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:58,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279253836] [2020-01-16 18:04:58,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:58,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279253836] [2020-01-16 18:04:58,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:58,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:58,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016288238] [2020-01-16 18:04:58,845 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:58,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:58,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:58,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:58,846 INFO L87 Difference]: Start difference. First operand 143 states and 390 transitions. Second operand 8 states. [2020-01-16 18:04:58,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:58,928 INFO L93 Difference]: Finished difference Result 234 states and 533 transitions. [2020-01-16 18:04:58,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:58,929 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:58,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:58,930 INFO L225 Difference]: With dead ends: 234 [2020-01-16 18:04:58,930 INFO L226 Difference]: Without dead ends: 224 [2020-01-16 18:04:58,930 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:58,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-01-16 18:04:58,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 145. [2020-01-16 18:04:58,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-01-16 18:04:58,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 393 transitions. [2020-01-16 18:04:58,934 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 393 transitions. Word has length 19 [2020-01-16 18:04:58,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:58,934 INFO L478 AbstractCegarLoop]: Abstraction has 145 states and 393 transitions. [2020-01-16 18:04:58,934 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:58,934 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 393 transitions. [2020-01-16 18:04:58,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:58,934 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:58,934 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:58,935 INFO L426 AbstractCegarLoop]: === Iteration 520 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:58,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:58,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1036372372, now seen corresponding path program 516 times [2020-01-16 18:04:58,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:58,935 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501449345] [2020-01-16 18:04:58,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:59,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:59,108 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501449345] [2020-01-16 18:04:59,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:59,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:59,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222332085] [2020-01-16 18:04:59,109 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:59,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:59,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:59,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:59,109 INFO L87 Difference]: Start difference. First operand 145 states and 393 transitions. Second operand 8 states. [2020-01-16 18:04:59,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:59,194 INFO L93 Difference]: Finished difference Result 228 states and 529 transitions. [2020-01-16 18:04:59,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:59,194 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:59,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:59,195 INFO L225 Difference]: With dead ends: 228 [2020-01-16 18:04:59,195 INFO L226 Difference]: Without dead ends: 210 [2020-01-16 18:04:59,195 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:59,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-01-16 18:04:59,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 140. [2020-01-16 18:04:59,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-01-16 18:04:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 384 transitions. [2020-01-16 18:04:59,199 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 384 transitions. Word has length 19 [2020-01-16 18:04:59,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:59,199 INFO L478 AbstractCegarLoop]: Abstraction has 140 states and 384 transitions. [2020-01-16 18:04:59,199 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 384 transitions. [2020-01-16 18:04:59,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:59,199 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:59,199 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:59,199 INFO L426 AbstractCegarLoop]: === Iteration 521 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:59,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:59,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1240611066, now seen corresponding path program 517 times [2020-01-16 18:04:59,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:59,200 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455882690] [2020-01-16 18:04:59,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:59,385 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455882690] [2020-01-16 18:04:59,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:59,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:59,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800492577] [2020-01-16 18:04:59,385 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:59,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:59,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:59,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:59,386 INFO L87 Difference]: Start difference. First operand 140 states and 384 transitions. Second operand 8 states. [2020-01-16 18:04:59,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:59,452 INFO L93 Difference]: Finished difference Result 246 states and 559 transitions. [2020-01-16 18:04:59,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:59,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:59,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:59,453 INFO L225 Difference]: With dead ends: 246 [2020-01-16 18:04:59,453 INFO L226 Difference]: Without dead ends: 230 [2020-01-16 18:04:59,453 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:59,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-01-16 18:04:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 146. [2020-01-16 18:04:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-01-16 18:04:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 398 transitions. [2020-01-16 18:04:59,457 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 398 transitions. Word has length 19 [2020-01-16 18:04:59,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:59,457 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 398 transitions. [2020-01-16 18:04:59,457 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:59,457 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 398 transitions. [2020-01-16 18:04:59,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:59,457 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:59,457 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:59,458 INFO L426 AbstractCegarLoop]: === Iteration 522 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:59,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:59,458 INFO L82 PathProgramCache]: Analyzing trace with hash -981552840, now seen corresponding path program 518 times [2020-01-16 18:04:59,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:59,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761508740] [2020-01-16 18:04:59,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:59,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761508740] [2020-01-16 18:04:59,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:59,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:59,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856682881] [2020-01-16 18:04:59,676 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:59,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:59,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:59,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:59,677 INFO L87 Difference]: Start difference. First operand 146 states and 398 transitions. Second operand 8 states. [2020-01-16 18:04:59,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:59,741 INFO L93 Difference]: Finished difference Result 240 states and 544 transitions. [2020-01-16 18:04:59,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:04:59,742 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:04:59,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:59,742 INFO L225 Difference]: With dead ends: 240 [2020-01-16 18:04:59,742 INFO L226 Difference]: Without dead ends: 227 [2020-01-16 18:04:59,743 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:04:59,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-01-16 18:04:59,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 143. [2020-01-16 18:04:59,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-01-16 18:04:59,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 391 transitions. [2020-01-16 18:04:59,746 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 391 transitions. Word has length 19 [2020-01-16 18:04:59,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:59,747 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 391 transitions. [2020-01-16 18:04:59,747 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:04:59,747 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 391 transitions. [2020-01-16 18:04:59,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:04:59,747 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:59,747 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:59,747 INFO L426 AbstractCegarLoop]: === Iteration 523 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:04:59,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:59,748 INFO L82 PathProgramCache]: Analyzing trace with hash -146519478, now seen corresponding path program 519 times [2020-01-16 18:04:59,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:59,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107077380] [2020-01-16 18:04:59,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:59,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107077380] [2020-01-16 18:04:59,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:59,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:04:59,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722907238] [2020-01-16 18:04:59,938 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:04:59,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:59,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:04:59,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:04:59,939 INFO L87 Difference]: Start difference. First operand 143 states and 391 transitions. Second operand 8 states. [2020-01-16 18:05:00,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:00,003 INFO L93 Difference]: Finished difference Result 244 states and 558 transitions. [2020-01-16 18:05:00,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:00,003 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:00,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:00,004 INFO L225 Difference]: With dead ends: 244 [2020-01-16 18:05:00,004 INFO L226 Difference]: Without dead ends: 228 [2020-01-16 18:05:00,004 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:00,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-01-16 18:05:00,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 149. [2020-01-16 18:05:00,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-01-16 18:05:00,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 402 transitions. [2020-01-16 18:05:00,008 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 402 transitions. Word has length 19 [2020-01-16 18:05:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:00,008 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 402 transitions. [2020-01-16 18:05:00,008 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 402 transitions. [2020-01-16 18:05:00,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:00,009 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:00,009 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:00,009 INFO L426 AbstractCegarLoop]: === Iteration 524 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:00,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:00,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1122724228, now seen corresponding path program 520 times [2020-01-16 18:05:00,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:00,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600723228] [2020-01-16 18:05:00,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:00,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600723228] [2020-01-16 18:05:00,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:00,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:00,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69856290] [2020-01-16 18:05:00,197 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:00,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:00,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:00,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:00,197 INFO L87 Difference]: Start difference. First operand 149 states and 402 transitions. Second operand 8 states. [2020-01-16 18:05:00,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:00,281 INFO L93 Difference]: Finished difference Result 232 states and 538 transitions. [2020-01-16 18:05:00,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:00,282 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:00,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:00,283 INFO L225 Difference]: With dead ends: 232 [2020-01-16 18:05:00,283 INFO L226 Difference]: Without dead ends: 213 [2020-01-16 18:05:00,283 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:00,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-01-16 18:05:00,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 143. [2020-01-16 18:05:00,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-01-16 18:05:00,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 388 transitions. [2020-01-16 18:05:00,287 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 388 transitions. Word has length 19 [2020-01-16 18:05:00,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:00,287 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 388 transitions. [2020-01-16 18:05:00,287 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:00,287 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 388 transitions. [2020-01-16 18:05:00,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:00,287 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:00,287 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:00,287 INFO L426 AbstractCegarLoop]: === Iteration 525 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:00,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:00,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1864843108, now seen corresponding path program 521 times [2020-01-16 18:05:00,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:00,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997599116] [2020-01-16 18:05:00,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:00,482 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997599116] [2020-01-16 18:05:00,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:00,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:00,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117246424] [2020-01-16 18:05:00,483 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:00,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:00,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:00,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:00,483 INFO L87 Difference]: Start difference. First operand 143 states and 388 transitions. Second operand 8 states. [2020-01-16 18:05:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:00,550 INFO L93 Difference]: Finished difference Result 234 states and 531 transitions. [2020-01-16 18:05:00,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:00,550 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:00,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:00,551 INFO L225 Difference]: With dead ends: 234 [2020-01-16 18:05:00,551 INFO L226 Difference]: Without dead ends: 224 [2020-01-16 18:05:00,551 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:00,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-01-16 18:05:00,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 145. [2020-01-16 18:05:00,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-01-16 18:05:00,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 391 transitions. [2020-01-16 18:05:00,554 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 391 transitions. Word has length 19 [2020-01-16 18:05:00,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:00,555 INFO L478 AbstractCegarLoop]: Abstraction has 145 states and 391 transitions. [2020-01-16 18:05:00,555 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:00,555 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 391 transitions. [2020-01-16 18:05:00,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:00,555 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:00,555 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:00,555 INFO L426 AbstractCegarLoop]: === Iteration 526 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:00,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:00,555 INFO L82 PathProgramCache]: Analyzing trace with hash -940719192, now seen corresponding path program 522 times [2020-01-16 18:05:00,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:00,556 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504227112] [2020-01-16 18:05:00,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:00,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504227112] [2020-01-16 18:05:00,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:00,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:00,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749893762] [2020-01-16 18:05:00,738 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:00,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:00,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:00,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:00,739 INFO L87 Difference]: Start difference. First operand 145 states and 391 transitions. Second operand 8 states. [2020-01-16 18:05:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:00,856 INFO L93 Difference]: Finished difference Result 228 states and 527 transitions. [2020-01-16 18:05:00,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:00,856 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:00,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:00,857 INFO L225 Difference]: With dead ends: 228 [2020-01-16 18:05:00,857 INFO L226 Difference]: Without dead ends: 210 [2020-01-16 18:05:00,857 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:00,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-01-16 18:05:00,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 140. [2020-01-16 18:05:00,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-01-16 18:05:00,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 382 transitions. [2020-01-16 18:05:00,861 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 382 transitions. Word has length 19 [2020-01-16 18:05:00,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:00,861 INFO L478 AbstractCegarLoop]: Abstraction has 140 states and 382 transitions. [2020-01-16 18:05:00,861 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:00,862 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 382 transitions. [2020-01-16 18:05:00,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:00,862 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:00,862 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:00,862 INFO L426 AbstractCegarLoop]: === Iteration 527 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:00,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:00,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1366197632, now seen corresponding path program 523 times [2020-01-16 18:05:00,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:00,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009898603] [2020-01-16 18:05:00,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:01,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009898603] [2020-01-16 18:05:01,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:01,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:01,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40341299] [2020-01-16 18:05:01,064 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:01,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:01,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:01,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:01,064 INFO L87 Difference]: Start difference. First operand 140 states and 382 transitions. Second operand 8 states. [2020-01-16 18:05:01,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:01,148 INFO L93 Difference]: Finished difference Result 220 states and 497 transitions. [2020-01-16 18:05:01,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:01,149 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:01,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:01,149 INFO L225 Difference]: With dead ends: 220 [2020-01-16 18:05:01,150 INFO L226 Difference]: Without dead ends: 210 [2020-01-16 18:05:01,150 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:01,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-01-16 18:05:01,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 142. [2020-01-16 18:05:01,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-01-16 18:05:01,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 386 transitions. [2020-01-16 18:05:01,154 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 386 transitions. Word has length 19 [2020-01-16 18:05:01,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:01,154 INFO L478 AbstractCegarLoop]: Abstraction has 142 states and 386 transitions. [2020-01-16 18:05:01,154 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:01,154 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 386 transitions. [2020-01-16 18:05:01,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:01,154 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:01,154 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:01,154 INFO L426 AbstractCegarLoop]: === Iteration 528 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:01,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:01,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1605839970, now seen corresponding path program 524 times [2020-01-16 18:05:01,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:01,155 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310344429] [2020-01-16 18:05:01,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:01,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310344429] [2020-01-16 18:05:01,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:01,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:01,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951737815] [2020-01-16 18:05:01,353 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:01,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:01,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:01,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:01,354 INFO L87 Difference]: Start difference. First operand 142 states and 386 transitions. Second operand 8 states. [2020-01-16 18:05:01,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:01,410 INFO L93 Difference]: Finished difference Result 220 states and 496 transitions. [2020-01-16 18:05:01,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:01,411 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:01,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:01,411 INFO L225 Difference]: With dead ends: 220 [2020-01-16 18:05:01,411 INFO L226 Difference]: Without dead ends: 209 [2020-01-16 18:05:01,412 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:01,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-01-16 18:05:01,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 141. [2020-01-16 18:05:01,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-01-16 18:05:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 384 transitions. [2020-01-16 18:05:01,417 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 384 transitions. Word has length 19 [2020-01-16 18:05:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:01,417 INFO L478 AbstractCegarLoop]: Abstraction has 141 states and 384 transitions. [2020-01-16 18:05:01,417 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:01,417 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 384 transitions. [2020-01-16 18:05:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:01,418 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:01,418 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:01,418 INFO L426 AbstractCegarLoop]: === Iteration 529 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:01,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:01,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1855684284, now seen corresponding path program 525 times [2020-01-16 18:05:01,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:01,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948461187] [2020-01-16 18:05:01,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:01,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948461187] [2020-01-16 18:05:01,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:01,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:01,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049640006] [2020-01-16 18:05:01,580 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:01,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:01,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:01,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:01,581 INFO L87 Difference]: Start difference. First operand 141 states and 384 transitions. Second operand 8 states. [2020-01-16 18:05:01,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:01,649 INFO L93 Difference]: Finished difference Result 222 states and 503 transitions. [2020-01-16 18:05:01,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:01,649 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:01,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:01,650 INFO L225 Difference]: With dead ends: 222 [2020-01-16 18:05:01,650 INFO L226 Difference]: Without dead ends: 212 [2020-01-16 18:05:01,650 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:01,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-01-16 18:05:01,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 143. [2020-01-16 18:05:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-01-16 18:05:01,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 387 transitions. [2020-01-16 18:05:01,653 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 387 transitions. Word has length 19 [2020-01-16 18:05:01,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:01,653 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 387 transitions. [2020-01-16 18:05:01,653 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:01,654 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 387 transitions. [2020-01-16 18:05:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:01,654 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:01,654 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:01,654 INFO L426 AbstractCegarLoop]: === Iteration 530 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:01,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:01,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1484304008, now seen corresponding path program 526 times [2020-01-16 18:05:01,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:01,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089543746] [2020-01-16 18:05:01,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:01,843 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089543746] [2020-01-16 18:05:01,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:01,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:01,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120258029] [2020-01-16 18:05:01,844 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:01,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:01,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:01,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:01,844 INFO L87 Difference]: Start difference. First operand 143 states and 387 transitions. Second operand 8 states. [2020-01-16 18:05:01,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:01,929 INFO L93 Difference]: Finished difference Result 216 states and 499 transitions. [2020-01-16 18:05:01,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:01,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:01,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:01,930 INFO L225 Difference]: With dead ends: 216 [2020-01-16 18:05:01,931 INFO L226 Difference]: Without dead ends: 201 [2020-01-16 18:05:01,931 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:01,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-01-16 18:05:01,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 141. [2020-01-16 18:05:01,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-01-16 18:05:01,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 383 transitions. [2020-01-16 18:05:01,934 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 383 transitions. Word has length 19 [2020-01-16 18:05:01,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:01,935 INFO L478 AbstractCegarLoop]: Abstraction has 141 states and 383 transitions. [2020-01-16 18:05:01,935 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:01,935 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 383 transitions. [2020-01-16 18:05:01,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:01,935 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:01,935 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:01,935 INFO L426 AbstractCegarLoop]: === Iteration 531 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:01,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:01,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1067984392, now seen corresponding path program 527 times [2020-01-16 18:05:01,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:01,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434062417] [2020-01-16 18:05:01,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:02,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434062417] [2020-01-16 18:05:02,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:02,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:02,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177639132] [2020-01-16 18:05:02,131 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:02,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:02,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:02,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:02,131 INFO L87 Difference]: Start difference. First operand 141 states and 383 transitions. Second operand 8 states. [2020-01-16 18:05:02,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:02,196 INFO L93 Difference]: Finished difference Result 222 states and 502 transitions. [2020-01-16 18:05:02,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:02,196 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:02,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:02,197 INFO L225 Difference]: With dead ends: 222 [2020-01-16 18:05:02,197 INFO L226 Difference]: Without dead ends: 212 [2020-01-16 18:05:02,197 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:02,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-01-16 18:05:02,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 143. [2020-01-16 18:05:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-01-16 18:05:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 386 transitions. [2020-01-16 18:05:02,200 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 386 transitions. Word has length 19 [2020-01-16 18:05:02,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:02,200 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 386 transitions. [2020-01-16 18:05:02,200 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:02,200 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 386 transitions. [2020-01-16 18:05:02,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:02,201 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:02,201 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:02,201 INFO L426 AbstractCegarLoop]: === Iteration 532 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:02,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:02,201 INFO L82 PathProgramCache]: Analyzing trace with hash 421420604, now seen corresponding path program 528 times [2020-01-16 18:05:02,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:02,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793076628] [2020-01-16 18:05:02,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:02,412 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793076628] [2020-01-16 18:05:02,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:02,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:02,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125965430] [2020-01-16 18:05:02,413 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:02,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:02,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:02,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:02,413 INFO L87 Difference]: Start difference. First operand 143 states and 386 transitions. Second operand 8 states. [2020-01-16 18:05:02,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:02,503 INFO L93 Difference]: Finished difference Result 216 states and 498 transitions. [2020-01-16 18:05:02,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:02,503 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:02,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:02,504 INFO L225 Difference]: With dead ends: 216 [2020-01-16 18:05:02,504 INFO L226 Difference]: Without dead ends: 198 [2020-01-16 18:05:02,504 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:02,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-01-16 18:05:02,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 138. [2020-01-16 18:05:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-01-16 18:05:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 378 transitions. [2020-01-16 18:05:02,508 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 378 transitions. Word has length 19 [2020-01-16 18:05:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:02,508 INFO L478 AbstractCegarLoop]: Abstraction has 138 states and 378 transitions. [2020-01-16 18:05:02,508 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 378 transitions. [2020-01-16 18:05:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:02,508 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:02,509 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:02,509 INFO L426 AbstractCegarLoop]: === Iteration 533 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:02,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:02,509 INFO L82 PathProgramCache]: Analyzing trace with hash 380240202, now seen corresponding path program 529 times [2020-01-16 18:05:02,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:02,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060923377] [2020-01-16 18:05:02,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:02,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:02,709 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060923377] [2020-01-16 18:05:02,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:02,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:02,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75746825] [2020-01-16 18:05:02,709 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:02,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:02,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:02,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:02,710 INFO L87 Difference]: Start difference. First operand 138 states and 378 transitions. Second operand 8 states. [2020-01-16 18:05:02,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:02,773 INFO L93 Difference]: Finished difference Result 245 states and 557 transitions. [2020-01-16 18:05:02,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:02,774 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:02,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:02,774 INFO L225 Difference]: With dead ends: 245 [2020-01-16 18:05:02,774 INFO L226 Difference]: Without dead ends: 229 [2020-01-16 18:05:02,774 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:02,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-01-16 18:05:02,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 141. [2020-01-16 18:05:02,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-01-16 18:05:02,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 382 transitions. [2020-01-16 18:05:02,778 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 382 transitions. Word has length 19 [2020-01-16 18:05:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:02,778 INFO L478 AbstractCegarLoop]: Abstraction has 141 states and 382 transitions. [2020-01-16 18:05:02,778 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:02,778 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 382 transitions. [2020-01-16 18:05:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:02,779 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:02,779 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:02,779 INFO L426 AbstractCegarLoop]: === Iteration 534 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:02,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:02,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1771486344, now seen corresponding path program 530 times [2020-01-16 18:05:02,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:02,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267504387] [2020-01-16 18:05:02,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:02,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267504387] [2020-01-16 18:05:02,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:02,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:02,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168595318] [2020-01-16 18:05:02,982 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:02,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:02,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:02,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:02,982 INFO L87 Difference]: Start difference. First operand 141 states and 382 transitions. Second operand 8 states. [2020-01-16 18:05:03,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:03,062 INFO L93 Difference]: Finished difference Result 239 states and 542 transitions. [2020-01-16 18:05:03,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:03,063 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:03,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:03,063 INFO L225 Difference]: With dead ends: 239 [2020-01-16 18:05:03,064 INFO L226 Difference]: Without dead ends: 226 [2020-01-16 18:05:03,064 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:03,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-01-16 18:05:03,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 138. [2020-01-16 18:05:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-01-16 18:05:03,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 375 transitions. [2020-01-16 18:05:03,067 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 375 transitions. Word has length 19 [2020-01-16 18:05:03,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:03,067 INFO L478 AbstractCegarLoop]: Abstraction has 138 states and 375 transitions. [2020-01-16 18:05:03,067 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:03,067 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 375 transitions. [2020-01-16 18:05:03,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:03,068 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:03,068 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:03,068 INFO L426 AbstractCegarLoop]: === Iteration 535 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:03,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:03,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1474331790, now seen corresponding path program 531 times [2020-01-16 18:05:03,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:03,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36068882] [2020-01-16 18:05:03,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:03,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36068882] [2020-01-16 18:05:03,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:03,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:03,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188747253] [2020-01-16 18:05:03,270 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:03,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:03,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:03,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:03,270 INFO L87 Difference]: Start difference. First operand 138 states and 375 transitions. Second operand 8 states. [2020-01-16 18:05:03,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:03,335 INFO L93 Difference]: Finished difference Result 249 states and 566 transitions. [2020-01-16 18:05:03,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:03,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:03,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:03,336 INFO L225 Difference]: With dead ends: 249 [2020-01-16 18:05:03,336 INFO L226 Difference]: Without dead ends: 233 [2020-01-16 18:05:03,336 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-01-16 18:05:03,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 143. [2020-01-16 18:05:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-01-16 18:05:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 384 transitions. [2020-01-16 18:05:03,340 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 384 transitions. Word has length 19 [2020-01-16 18:05:03,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:03,341 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 384 transitions. [2020-01-16 18:05:03,341 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 384 transitions. [2020-01-16 18:05:03,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:03,341 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:03,341 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:03,341 INFO L426 AbstractCegarLoop]: === Iteration 536 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:03,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:03,341 INFO L82 PathProgramCache]: Analyzing trace with hash 723269696, now seen corresponding path program 532 times [2020-01-16 18:05:03,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:03,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404201313] [2020-01-16 18:05:03,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:03,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:03,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404201313] [2020-01-16 18:05:03,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:03,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:03,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466238317] [2020-01-16 18:05:03,535 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:03,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:03,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:03,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:03,535 INFO L87 Difference]: Start difference. First operand 143 states and 384 transitions. Second operand 8 states. [2020-01-16 18:05:03,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:03,619 INFO L93 Difference]: Finished difference Result 245 states and 554 transitions. [2020-01-16 18:05:03,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:03,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:03,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:03,620 INFO L225 Difference]: With dead ends: 245 [2020-01-16 18:05:03,620 INFO L226 Difference]: Without dead ends: 228 [2020-01-16 18:05:03,620 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-01-16 18:05:03,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 138. [2020-01-16 18:05:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-01-16 18:05:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 372 transitions. [2020-01-16 18:05:03,624 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 372 transitions. Word has length 19 [2020-01-16 18:05:03,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:03,624 INFO L478 AbstractCegarLoop]: Abstraction has 138 states and 372 transitions. [2020-01-16 18:05:03,624 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:03,624 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 372 transitions. [2020-01-16 18:05:03,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:03,625 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:03,625 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:03,625 INFO L426 AbstractCegarLoop]: === Iteration 537 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:03,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:03,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1883916852, now seen corresponding path program 533 times [2020-01-16 18:05:03,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:03,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615036310] [2020-01-16 18:05:03,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:03,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615036310] [2020-01-16 18:05:03,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:03,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:03,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368957782] [2020-01-16 18:05:03,827 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:03,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:03,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:03,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:03,828 INFO L87 Difference]: Start difference. First operand 138 states and 372 transitions. Second operand 8 states. [2020-01-16 18:05:03,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:03,912 INFO L93 Difference]: Finished difference Result 234 states and 530 transitions. [2020-01-16 18:05:03,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:03,912 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:03,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:03,913 INFO L225 Difference]: With dead ends: 234 [2020-01-16 18:05:03,913 INFO L226 Difference]: Without dead ends: 224 [2020-01-16 18:05:03,913 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:03,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-01-16 18:05:03,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 140. [2020-01-16 18:05:03,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-01-16 18:05:03,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 375 transitions. [2020-01-16 18:05:03,916 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 375 transitions. Word has length 19 [2020-01-16 18:05:03,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:03,916 INFO L478 AbstractCegarLoop]: Abstraction has 140 states and 375 transitions. [2020-01-16 18:05:03,916 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:03,916 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 375 transitions. [2020-01-16 18:05:03,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:03,917 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:03,917 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:03,917 INFO L426 AbstractCegarLoop]: === Iteration 538 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:03,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:03,917 INFO L82 PathProgramCache]: Analyzing trace with hash -700437136, now seen corresponding path program 534 times [2020-01-16 18:05:03,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:03,917 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833843446] [2020-01-16 18:05:03,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:04,110 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833843446] [2020-01-16 18:05:04,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:04,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:04,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220241236] [2020-01-16 18:05:04,110 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:04,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:04,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:04,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:04,111 INFO L87 Difference]: Start difference. First operand 140 states and 375 transitions. Second operand 8 states. [2020-01-16 18:05:04,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:04,196 INFO L93 Difference]: Finished difference Result 236 states and 533 transitions. [2020-01-16 18:05:04,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:04,196 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:04,197 INFO L225 Difference]: With dead ends: 236 [2020-01-16 18:05:04,197 INFO L226 Difference]: Without dead ends: 219 [2020-01-16 18:05:04,197 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:04,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-01-16 18:05:04,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 135. [2020-01-16 18:05:04,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-01-16 18:05:04,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 365 transitions. [2020-01-16 18:05:04,201 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 365 transitions. Word has length 19 [2020-01-16 18:05:04,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:04,201 INFO L478 AbstractCegarLoop]: Abstraction has 135 states and 365 transitions. [2020-01-16 18:05:04,201 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:04,201 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 365 transitions. [2020-01-16 18:05:04,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:04,201 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:04,201 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:04,201 INFO L426 AbstractCegarLoop]: === Iteration 539 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:04,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1988693016, now seen corresponding path program 535 times [2020-01-16 18:05:04,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:04,202 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023447283] [2020-01-16 18:05:04,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:04,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023447283] [2020-01-16 18:05:04,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:04,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:04,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828855866] [2020-01-16 18:05:04,382 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:04,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:04,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:04,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:04,383 INFO L87 Difference]: Start difference. First operand 135 states and 365 transitions. Second operand 8 states. [2020-01-16 18:05:04,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:04,444 INFO L93 Difference]: Finished difference Result 241 states and 542 transitions. [2020-01-16 18:05:04,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:04,444 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:04,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:04,445 INFO L225 Difference]: With dead ends: 241 [2020-01-16 18:05:04,445 INFO L226 Difference]: Without dead ends: 225 [2020-01-16 18:05:04,445 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:04,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-01-16 18:05:04,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 135. [2020-01-16 18:05:04,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-01-16 18:05:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 362 transitions. [2020-01-16 18:05:04,449 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 362 transitions. Word has length 19 [2020-01-16 18:05:04,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:04,449 INFO L478 AbstractCegarLoop]: Abstraction has 135 states and 362 transitions. [2020-01-16 18:05:04,449 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:04,449 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 362 transitions. [2020-01-16 18:05:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:04,449 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:04,449 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:04,449 INFO L426 AbstractCegarLoop]: === Iteration 540 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:04,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:04,450 INFO L82 PathProgramCache]: Analyzing trace with hash 154547734, now seen corresponding path program 536 times [2020-01-16 18:05:04,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:04,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283041920] [2020-01-16 18:05:04,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:04,623 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283041920] [2020-01-16 18:05:04,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:04,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:04,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554197681] [2020-01-16 18:05:04,623 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:04,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:04,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:04,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:04,624 INFO L87 Difference]: Start difference. First operand 135 states and 362 transitions. Second operand 8 states. [2020-01-16 18:05:04,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:04,702 INFO L93 Difference]: Finished difference Result 235 states and 527 transitions. [2020-01-16 18:05:04,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:04,703 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:04,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:04,703 INFO L225 Difference]: With dead ends: 235 [2020-01-16 18:05:04,703 INFO L226 Difference]: Without dead ends: 222 [2020-01-16 18:05:04,704 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:04,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-01-16 18:05:04,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 132. [2020-01-16 18:05:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-01-16 18:05:04,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 355 transitions. [2020-01-16 18:05:04,707 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 355 transitions. Word has length 19 [2020-01-16 18:05:04,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:04,707 INFO L478 AbstractCegarLoop]: Abstraction has 132 states and 355 transitions. [2020-01-16 18:05:04,707 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:04,708 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 355 transitions. [2020-01-16 18:05:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:04,708 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:04,708 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:04,708 INFO L426 AbstractCegarLoop]: === Iteration 541 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:04,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:04,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1799928014, now seen corresponding path program 537 times [2020-01-16 18:05:04,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:04,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042906542] [2020-01-16 18:05:04,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:04,894 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042906542] [2020-01-16 18:05:04,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:04,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:04,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242209698] [2020-01-16 18:05:04,894 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:04,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:04,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:04,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:04,894 INFO L87 Difference]: Start difference. First operand 132 states and 355 transitions. Second operand 8 states. [2020-01-16 18:05:04,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:04,957 INFO L93 Difference]: Finished difference Result 239 states and 541 transitions. [2020-01-16 18:05:04,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:04,958 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:04,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:04,958 INFO L225 Difference]: With dead ends: 239 [2020-01-16 18:05:04,959 INFO L226 Difference]: Without dead ends: 223 [2020-01-16 18:05:04,959 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:04,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-01-16 18:05:04,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 138. [2020-01-16 18:05:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-01-16 18:05:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 366 transitions. [2020-01-16 18:05:04,962 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 366 transitions. Word has length 19 [2020-01-16 18:05:04,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:04,962 INFO L478 AbstractCegarLoop]: Abstraction has 138 states and 366 transitions. [2020-01-16 18:05:04,962 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:04,962 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 366 transitions. [2020-01-16 18:05:04,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:04,962 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:04,963 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:04,963 INFO L426 AbstractCegarLoop]: === Iteration 542 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:04,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:04,963 INFO L82 PathProgramCache]: Analyzing trace with hash 823723264, now seen corresponding path program 538 times [2020-01-16 18:05:04,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:04,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824900727] [2020-01-16 18:05:04,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:05,141 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824900727] [2020-01-16 18:05:05,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:05,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:05,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614873115] [2020-01-16 18:05:05,141 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:05,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:05,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:05,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:05,142 INFO L87 Difference]: Start difference. First operand 138 states and 366 transitions. Second operand 8 states. [2020-01-16 18:05:05,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:05,225 INFO L93 Difference]: Finished difference Result 227 states and 521 transitions. [2020-01-16 18:05:05,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:05,225 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:05,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:05,226 INFO L225 Difference]: With dead ends: 227 [2020-01-16 18:05:05,226 INFO L226 Difference]: Without dead ends: 208 [2020-01-16 18:05:05,226 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:05,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-01-16 18:05:05,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 132. [2020-01-16 18:05:05,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-01-16 18:05:05,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 352 transitions. [2020-01-16 18:05:05,230 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 352 transitions. Word has length 19 [2020-01-16 18:05:05,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:05,230 INFO L478 AbstractCegarLoop]: Abstraction has 132 states and 352 transitions. [2020-01-16 18:05:05,230 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:05,230 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 352 transitions. [2020-01-16 18:05:05,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:05,230 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:05,230 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:05,230 INFO L426 AbstractCegarLoop]: === Iteration 543 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:05,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:05,231 INFO L82 PathProgramCache]: Analyzing trace with hash 270189236, now seen corresponding path program 539 times [2020-01-16 18:05:05,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:05,231 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978776522] [2020-01-16 18:05:05,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:05,400 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978776522] [2020-01-16 18:05:05,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:05,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:05,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154658275] [2020-01-16 18:05:05,400 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:05,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:05,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:05,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:05,401 INFO L87 Difference]: Start difference. First operand 132 states and 352 transitions. Second operand 8 states. [2020-01-16 18:05:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:05,473 INFO L93 Difference]: Finished difference Result 229 states and 514 transitions. [2020-01-16 18:05:05,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:05,473 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:05,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:05,474 INFO L225 Difference]: With dead ends: 229 [2020-01-16 18:05:05,474 INFO L226 Difference]: Without dead ends: 219 [2020-01-16 18:05:05,474 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:05,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-01-16 18:05:05,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 134. [2020-01-16 18:05:05,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-01-16 18:05:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 355 transitions. [2020-01-16 18:05:05,478 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 355 transitions. Word has length 19 [2020-01-16 18:05:05,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:05,478 INFO L478 AbstractCegarLoop]: Abstraction has 134 states and 355 transitions. [2020-01-16 18:05:05,478 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:05,478 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 355 transitions. [2020-01-16 18:05:05,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:05,478 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:05,478 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:05,478 INFO L426 AbstractCegarLoop]: === Iteration 544 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:05,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:05,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1458858098, now seen corresponding path program 540 times [2020-01-16 18:05:05,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:05,479 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227255270] [2020-01-16 18:05:05,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:05,657 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227255270] [2020-01-16 18:05:05,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:05,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:05,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231329944] [2020-01-16 18:05:05,658 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:05,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:05,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:05,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:05,659 INFO L87 Difference]: Start difference. First operand 134 states and 355 transitions. Second operand 8 states. [2020-01-16 18:05:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:05,740 INFO L93 Difference]: Finished difference Result 223 states and 510 transitions. [2020-01-16 18:05:05,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:05,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:05,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:05,741 INFO L225 Difference]: With dead ends: 223 [2020-01-16 18:05:05,741 INFO L226 Difference]: Without dead ends: 205 [2020-01-16 18:05:05,741 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:05,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-01-16 18:05:05,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 129. [2020-01-16 18:05:05,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-01-16 18:05:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 345 transitions. [2020-01-16 18:05:05,744 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 345 transitions. Word has length 19 [2020-01-16 18:05:05,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:05,745 INFO L478 AbstractCegarLoop]: Abstraction has 129 states and 345 transitions. [2020-01-16 18:05:05,745 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:05,745 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 345 transitions. [2020-01-16 18:05:05,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:05,745 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:05,745 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:05,745 INFO L426 AbstractCegarLoop]: === Iteration 545 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:05,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:05,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1337500568, now seen corresponding path program 541 times [2020-01-16 18:05:05,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:05,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082484956] [2020-01-16 18:05:05,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:05,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082484956] [2020-01-16 18:05:05,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:05,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:05,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602756746] [2020-01-16 18:05:05,948 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:05,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:05,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:05,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:05,948 INFO L87 Difference]: Start difference. First operand 129 states and 345 transitions. Second operand 8 states. [2020-01-16 18:05:06,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:06,011 INFO L93 Difference]: Finished difference Result 243 states and 557 transitions. [2020-01-16 18:05:06,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:06,011 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:06,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:06,012 INFO L225 Difference]: With dead ends: 243 [2020-01-16 18:05:06,012 INFO L226 Difference]: Without dead ends: 227 [2020-01-16 18:05:06,012 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:06,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-01-16 18:05:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 139. [2020-01-16 18:05:06,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-01-16 18:05:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 373 transitions. [2020-01-16 18:05:06,015 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 373 transitions. Word has length 19 [2020-01-16 18:05:06,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:06,016 INFO L478 AbstractCegarLoop]: Abstraction has 139 states and 373 transitions. [2020-01-16 18:05:06,016 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:06,016 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 373 transitions. [2020-01-16 18:05:06,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:06,016 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:06,016 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:06,016 INFO L426 AbstractCegarLoop]: === Iteration 546 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:06,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:06,016 INFO L82 PathProgramCache]: Analyzing trace with hash -2088562662, now seen corresponding path program 542 times [2020-01-16 18:05:06,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:06,017 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493035409] [2020-01-16 18:05:06,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:06,208 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493035409] [2020-01-16 18:05:06,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:06,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:06,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769253207] [2020-01-16 18:05:06,209 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:06,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:06,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:06,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:06,209 INFO L87 Difference]: Start difference. First operand 139 states and 373 transitions. Second operand 8 states. [2020-01-16 18:05:06,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:06,292 INFO L93 Difference]: Finished difference Result 239 states and 545 transitions. [2020-01-16 18:05:06,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:06,292 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:06,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:06,293 INFO L225 Difference]: With dead ends: 239 [2020-01-16 18:05:06,293 INFO L226 Difference]: Without dead ends: 222 [2020-01-16 18:05:06,293 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:06,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-01-16 18:05:06,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 134. [2020-01-16 18:05:06,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-01-16 18:05:06,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 359 transitions. [2020-01-16 18:05:06,296 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 359 transitions. Word has length 19 [2020-01-16 18:05:06,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:06,296 INFO L478 AbstractCegarLoop]: Abstraction has 134 states and 359 transitions. [2020-01-16 18:05:06,296 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:06,296 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 359 transitions. [2020-01-16 18:05:06,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:06,297 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:06,297 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:06,297 INFO L426 AbstractCegarLoop]: === Iteration 547 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:06,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:06,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1357028874, now seen corresponding path program 543 times [2020-01-16 18:05:06,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:06,297 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506260684] [2020-01-16 18:05:06,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:06,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506260684] [2020-01-16 18:05:06,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:06,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:06,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560231644] [2020-01-16 18:05:06,500 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:06,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:06,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:06,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:06,501 INFO L87 Difference]: Start difference. First operand 134 states and 359 transitions. Second operand 8 states. [2020-01-16 18:05:06,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:06,563 INFO L93 Difference]: Finished difference Result 231 states and 525 transitions. [2020-01-16 18:05:06,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:06,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:06,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:06,564 INFO L225 Difference]: With dead ends: 231 [2020-01-16 18:05:06,564 INFO L226 Difference]: Without dead ends: 215 [2020-01-16 18:05:06,564 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:06,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-01-16 18:05:06,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 140. [2020-01-16 18:05:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-01-16 18:05:06,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 370 transitions. [2020-01-16 18:05:06,568 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 370 transitions. Word has length 19 [2020-01-16 18:05:06,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:06,568 INFO L478 AbstractCegarLoop]: Abstraction has 140 states and 370 transitions. [2020-01-16 18:05:06,568 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:06,568 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 370 transitions. [2020-01-16 18:05:06,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:06,568 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:06,569 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:06,569 INFO L426 AbstractCegarLoop]: === Iteration 548 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:06,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:06,569 INFO L82 PathProgramCache]: Analyzing trace with hash 380824124, now seen corresponding path program 544 times [2020-01-16 18:05:06,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:06,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311415561] [2020-01-16 18:05:06,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:06,759 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311415561] [2020-01-16 18:05:06,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:06,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:06,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479241790] [2020-01-16 18:05:06,760 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:06,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:06,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:06,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:06,760 INFO L87 Difference]: Start difference. First operand 140 states and 370 transitions. Second operand 8 states. [2020-01-16 18:05:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:06,844 INFO L93 Difference]: Finished difference Result 219 states and 505 transitions. [2020-01-16 18:05:06,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:06,845 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:06,845 INFO L225 Difference]: With dead ends: 219 [2020-01-16 18:05:06,845 INFO L226 Difference]: Without dead ends: 200 [2020-01-16 18:05:06,846 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:06,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-01-16 18:05:06,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 134. [2020-01-16 18:05:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-01-16 18:05:06,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 354 transitions. [2020-01-16 18:05:06,849 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 354 transitions. Word has length 19 [2020-01-16 18:05:06,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:06,849 INFO L478 AbstractCegarLoop]: Abstraction has 134 states and 354 transitions. [2020-01-16 18:05:06,849 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:06,849 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 354 transitions. [2020-01-16 18:05:06,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:06,850 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:06,850 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:06,850 INFO L426 AbstractCegarLoop]: === Iteration 549 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:06,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:06,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2008828456, now seen corresponding path program 545 times [2020-01-16 18:05:06,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:06,850 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541992655] [2020-01-16 18:05:06,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:07,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:07,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541992655] [2020-01-16 18:05:07,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:07,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:07,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132957316] [2020-01-16 18:05:07,042 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:07,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:07,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:07,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:07,042 INFO L87 Difference]: Start difference. First operand 134 states and 354 transitions. Second operand 8 states. [2020-01-16 18:05:07,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:07,128 INFO L93 Difference]: Finished difference Result 216 states and 499 transitions. [2020-01-16 18:05:07,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:07,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:07,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:07,129 INFO L225 Difference]: With dead ends: 216 [2020-01-16 18:05:07,130 INFO L226 Difference]: Without dead ends: 204 [2020-01-16 18:05:07,130 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:07,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-01-16 18:05:07,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 138. [2020-01-16 18:05:07,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-01-16 18:05:07,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 362 transitions. [2020-01-16 18:05:07,133 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 362 transitions. Word has length 19 [2020-01-16 18:05:07,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:07,134 INFO L478 AbstractCegarLoop]: Abstraction has 138 states and 362 transitions. [2020-01-16 18:05:07,134 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 362 transitions. [2020-01-16 18:05:07,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:07,134 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:07,134 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:07,134 INFO L426 AbstractCegarLoop]: === Iteration 550 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:07,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:07,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1427264310, now seen corresponding path program 546 times [2020-01-16 18:05:07,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:07,135 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747065865] [2020-01-16 18:05:07,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:07,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:07,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747065865] [2020-01-16 18:05:07,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:07,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:07,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215205814] [2020-01-16 18:05:07,324 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:07,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:07,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:07,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:07,325 INFO L87 Difference]: Start difference. First operand 138 states and 362 transitions. Second operand 8 states. [2020-01-16 18:05:07,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:07,411 INFO L93 Difference]: Finished difference Result 203 states and 478 transitions. [2020-01-16 18:05:07,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:07,411 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:07,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:07,412 INFO L225 Difference]: With dead ends: 203 [2020-01-16 18:05:07,412 INFO L226 Difference]: Without dead ends: 181 [2020-01-16 18:05:07,412 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:07,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-01-16 18:05:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 129. [2020-01-16 18:05:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-01-16 18:05:07,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 342 transitions. [2020-01-16 18:05:07,415 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 342 transitions. Word has length 19 [2020-01-16 18:05:07,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:07,415 INFO L478 AbstractCegarLoop]: Abstraction has 129 states and 342 transitions. [2020-01-16 18:05:07,415 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:07,415 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 342 transitions. [2020-01-16 18:05:07,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:07,416 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:07,416 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:07,416 INFO L426 AbstractCegarLoop]: === Iteration 551 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:07,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:07,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1173836118, now seen corresponding path program 547 times [2020-01-16 18:05:07,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:07,416 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790977486] [2020-01-16 18:05:07,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:07,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790977486] [2020-01-16 18:05:07,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:07,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:07,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600069838] [2020-01-16 18:05:07,612 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:07,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:07,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:07,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:07,613 INFO L87 Difference]: Start difference. First operand 129 states and 342 transitions. Second operand 8 states. [2020-01-16 18:05:07,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:07,700 INFO L93 Difference]: Finished difference Result 221 states and 497 transitions. [2020-01-16 18:05:07,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:07,700 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:07,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:07,701 INFO L225 Difference]: With dead ends: 221 [2020-01-16 18:05:07,701 INFO L226 Difference]: Without dead ends: 211 [2020-01-16 18:05:07,701 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:07,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-01-16 18:05:07,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 133. [2020-01-16 18:05:07,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-01-16 18:05:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 352 transitions. [2020-01-16 18:05:07,705 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 352 transitions. Word has length 19 [2020-01-16 18:05:07,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:07,705 INFO L478 AbstractCegarLoop]: Abstraction has 133 states and 352 transitions. [2020-01-16 18:05:07,705 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:07,705 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 352 transitions. [2020-01-16 18:05:07,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:07,705 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:07,706 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:07,706 INFO L426 AbstractCegarLoop]: === Iteration 552 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:07,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:07,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1410517870, now seen corresponding path program 548 times [2020-01-16 18:05:07,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:07,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22598038] [2020-01-16 18:05:07,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:07,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:07,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22598038] [2020-01-16 18:05:07,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:07,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:07,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783141476] [2020-01-16 18:05:07,906 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:07,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:07,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:07,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:07,906 INFO L87 Difference]: Start difference. First operand 133 states and 352 transitions. Second operand 8 states. [2020-01-16 18:05:07,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:07,993 INFO L93 Difference]: Finished difference Result 223 states and 500 transitions. [2020-01-16 18:05:07,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:07,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:07,994 INFO L225 Difference]: With dead ends: 223 [2020-01-16 18:05:07,994 INFO L226 Difference]: Without dead ends: 209 [2020-01-16 18:05:07,994 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:07,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-01-16 18:05:07,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 131. [2020-01-16 18:05:07,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-01-16 18:05:07,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 347 transitions. [2020-01-16 18:05:07,997 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 347 transitions. Word has length 19 [2020-01-16 18:05:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:07,998 INFO L478 AbstractCegarLoop]: Abstraction has 131 states and 347 transitions. [2020-01-16 18:05:07,998 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 347 transitions. [2020-01-16 18:05:07,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:07,998 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:07,998 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:07,998 INFO L426 AbstractCegarLoop]: === Iteration 553 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:07,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:07,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1918538616, now seen corresponding path program 549 times [2020-01-16 18:05:07,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:07,998 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464022523] [2020-01-16 18:05:07,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:08,191 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464022523] [2020-01-16 18:05:08,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:08,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:08,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013403754] [2020-01-16 18:05:08,191 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:08,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:08,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:08,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:08,192 INFO L87 Difference]: Start difference. First operand 131 states and 347 transitions. Second operand 8 states. [2020-01-16 18:05:08,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:08,278 INFO L93 Difference]: Finished difference Result 218 states and 489 transitions. [2020-01-16 18:05:08,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:08,278 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:08,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:08,279 INFO L225 Difference]: With dead ends: 218 [2020-01-16 18:05:08,279 INFO L226 Difference]: Without dead ends: 208 [2020-01-16 18:05:08,279 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:08,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-01-16 18:05:08,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 133. [2020-01-16 18:05:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-01-16 18:05:08,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 350 transitions. [2020-01-16 18:05:08,282 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 350 transitions. Word has length 19 [2020-01-16 18:05:08,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:08,282 INFO L478 AbstractCegarLoop]: Abstraction has 133 states and 350 transitions. [2020-01-16 18:05:08,282 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:08,282 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 350 transitions. [2020-01-16 18:05:08,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:08,283 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:08,283 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:08,283 INFO L426 AbstractCegarLoop]: === Iteration 554 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:08,283 INFO L82 PathProgramCache]: Analyzing trace with hash 189491282, now seen corresponding path program 550 times [2020-01-16 18:05:08,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:08,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034753536] [2020-01-16 18:05:08,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:08,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034753536] [2020-01-16 18:05:08,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:08,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:08,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141035824] [2020-01-16 18:05:08,473 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:08,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:08,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:08,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:08,474 INFO L87 Difference]: Start difference. First operand 133 states and 350 transitions. Second operand 8 states. [2020-01-16 18:05:08,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:08,559 INFO L93 Difference]: Finished difference Result 212 states and 485 transitions. [2020-01-16 18:05:08,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:08,560 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:08,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:08,560 INFO L225 Difference]: With dead ends: 212 [2020-01-16 18:05:08,560 INFO L226 Difference]: Without dead ends: 197 [2020-01-16 18:05:08,560 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:08,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-01-16 18:05:08,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 131. [2020-01-16 18:05:08,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-01-16 18:05:08,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 345 transitions. [2020-01-16 18:05:08,563 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 345 transitions. Word has length 19 [2020-01-16 18:05:08,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:08,564 INFO L478 AbstractCegarLoop]: Abstraction has 131 states and 345 transitions. [2020-01-16 18:05:08,564 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:08,564 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 345 transitions. [2020-01-16 18:05:08,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:08,564 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:08,564 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:08,564 INFO L426 AbstractCegarLoop]: === Iteration 555 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:08,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:08,564 INFO L82 PathProgramCache]: Analyzing trace with hash 823589624, now seen corresponding path program 551 times [2020-01-16 18:05:08,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:08,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155454488] [2020-01-16 18:05:08,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:08,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:08,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155454488] [2020-01-16 18:05:08,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:08,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:08,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664798784] [2020-01-16 18:05:08,755 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:08,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:08,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:08,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:08,756 INFO L87 Difference]: Start difference. First operand 131 states and 345 transitions. Second operand 8 states. [2020-01-16 18:05:08,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:08,839 INFO L93 Difference]: Finished difference Result 213 states and 490 transitions. [2020-01-16 18:05:08,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:08,840 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:08,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:08,840 INFO L225 Difference]: With dead ends: 213 [2020-01-16 18:05:08,840 INFO L226 Difference]: Without dead ends: 201 [2020-01-16 18:05:08,841 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:08,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-01-16 18:05:08,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 135. [2020-01-16 18:05:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-01-16 18:05:08,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 353 transitions. [2020-01-16 18:05:08,844 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 353 transitions. Word has length 19 [2020-01-16 18:05:08,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:08,844 INFO L478 AbstractCegarLoop]: Abstraction has 135 states and 353 transitions. [2020-01-16 18:05:08,845 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:08,845 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 353 transitions. [2020-01-16 18:05:08,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:08,845 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:08,845 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:08,845 INFO L426 AbstractCegarLoop]: === Iteration 556 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:08,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:08,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1678896278, now seen corresponding path program 552 times [2020-01-16 18:05:08,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:08,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951742700] [2020-01-16 18:05:08,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:09,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951742700] [2020-01-16 18:05:09,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:09,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:09,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474710143] [2020-01-16 18:05:09,042 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:09,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:09,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:09,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:09,042 INFO L87 Difference]: Start difference. First operand 135 states and 353 transitions. Second operand 8 states. [2020-01-16 18:05:09,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:09,122 INFO L93 Difference]: Finished difference Result 200 states and 469 transitions. [2020-01-16 18:05:09,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:09,123 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:09,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:09,123 INFO L225 Difference]: With dead ends: 200 [2020-01-16 18:05:09,123 INFO L226 Difference]: Without dead ends: 178 [2020-01-16 18:05:09,124 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:09,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-01-16 18:05:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 126. [2020-01-16 18:05:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-01-16 18:05:09,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 336 transitions. [2020-01-16 18:05:09,126 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 336 transitions. Word has length 19 [2020-01-16 18:05:09,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:09,127 INFO L478 AbstractCegarLoop]: Abstraction has 126 states and 336 transitions. [2020-01-16 18:05:09,127 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:09,127 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 336 transitions. [2020-01-16 18:05:09,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:09,127 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:09,127 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:09,127 INFO L426 AbstractCegarLoop]: === Iteration 557 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:09,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:09,127 INFO L82 PathProgramCache]: Analyzing trace with hash 283350700, now seen corresponding path program 553 times [2020-01-16 18:05:09,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:09,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212351025] [2020-01-16 18:05:09,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:09,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212351025] [2020-01-16 18:05:09,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:09,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:09,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182643319] [2020-01-16 18:05:09,326 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:09,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:09,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:09,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:09,327 INFO L87 Difference]: Start difference. First operand 126 states and 336 transitions. Second operand 8 states. [2020-01-16 18:05:09,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:09,384 INFO L93 Difference]: Finished difference Result 220 states and 486 transitions. [2020-01-16 18:05:09,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:09,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:09,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:09,385 INFO L225 Difference]: With dead ends: 220 [2020-01-16 18:05:09,386 INFO L226 Difference]: Without dead ends: 204 [2020-01-16 18:05:09,386 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-01-16 18:05:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 129. [2020-01-16 18:05:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-01-16 18:05:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 340 transitions. [2020-01-16 18:05:09,388 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 340 transitions. Word has length 19 [2020-01-16 18:05:09,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:09,389 INFO L478 AbstractCegarLoop]: Abstraction has 129 states and 340 transitions. [2020-01-16 18:05:09,389 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 340 transitions. [2020-01-16 18:05:09,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:09,389 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:09,389 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:09,389 INFO L426 AbstractCegarLoop]: === Iteration 558 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:09,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:09,389 INFO L82 PathProgramCache]: Analyzing trace with hash 542408926, now seen corresponding path program 554 times [2020-01-16 18:05:09,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:09,390 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211981296] [2020-01-16 18:05:09,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:09,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:09,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211981296] [2020-01-16 18:05:09,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:09,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:09,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414750233] [2020-01-16 18:05:09,591 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:09,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:09,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:09,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:09,592 INFO L87 Difference]: Start difference. First operand 129 states and 340 transitions. Second operand 8 states. [2020-01-16 18:05:09,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:09,655 INFO L93 Difference]: Finished difference Result 214 states and 471 transitions. [2020-01-16 18:05:09,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:09,656 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:09,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:09,656 INFO L225 Difference]: With dead ends: 214 [2020-01-16 18:05:09,657 INFO L226 Difference]: Without dead ends: 201 [2020-01-16 18:05:09,657 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:09,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-01-16 18:05:09,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 126. [2020-01-16 18:05:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-01-16 18:05:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 333 transitions. [2020-01-16 18:05:09,660 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 333 transitions. Word has length 19 [2020-01-16 18:05:09,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:09,660 INFO L478 AbstractCegarLoop]: Abstraction has 126 states and 333 transitions. [2020-01-16 18:05:09,661 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:09,661 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 333 transitions. [2020-01-16 18:05:09,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:09,661 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:09,661 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:09,661 INFO L426 AbstractCegarLoop]: === Iteration 559 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:09,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:09,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1317087154, now seen corresponding path program 555 times [2020-01-16 18:05:09,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:09,662 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745789804] [2020-01-16 18:05:09,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:09,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745789804] [2020-01-16 18:05:09,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:09,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:09,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170520315] [2020-01-16 18:05:09,860 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:09,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:09,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:09,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:09,860 INFO L87 Difference]: Start difference. First operand 126 states and 333 transitions. Second operand 8 states. [2020-01-16 18:05:09,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:09,919 INFO L93 Difference]: Finished difference Result 224 states and 495 transitions. [2020-01-16 18:05:09,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:09,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:09,920 INFO L225 Difference]: With dead ends: 224 [2020-01-16 18:05:09,920 INFO L226 Difference]: Without dead ends: 208 [2020-01-16 18:05:09,920 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:09,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-01-16 18:05:09,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 131. [2020-01-16 18:05:09,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-01-16 18:05:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 342 transitions. [2020-01-16 18:05:09,924 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 342 transitions. Word has length 19 [2020-01-16 18:05:09,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:09,924 INFO L478 AbstractCegarLoop]: Abstraction has 131 states and 342 transitions. [2020-01-16 18:05:09,924 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:09,924 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 342 transitions. [2020-01-16 18:05:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:09,925 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:09,925 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:09,925 INFO L426 AbstractCegarLoop]: === Iteration 560 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:09,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:09,925 INFO L82 PathProgramCache]: Analyzing trace with hash -2068149248, now seen corresponding path program 556 times [2020-01-16 18:05:09,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:09,925 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738760671] [2020-01-16 18:05:09,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:10,122 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738760671] [2020-01-16 18:05:10,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:10,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:10,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731283868] [2020-01-16 18:05:10,122 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:10,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:10,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:10,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:10,123 INFO L87 Difference]: Start difference. First operand 131 states and 342 transitions. Second operand 8 states. [2020-01-16 18:05:10,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:10,205 INFO L93 Difference]: Finished difference Result 220 states and 483 transitions. [2020-01-16 18:05:10,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:10,205 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:10,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:10,206 INFO L225 Difference]: With dead ends: 220 [2020-01-16 18:05:10,206 INFO L226 Difference]: Without dead ends: 203 [2020-01-16 18:05:10,206 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:10,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-01-16 18:05:10,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 126. [2020-01-16 18:05:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-01-16 18:05:10,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 330 transitions. [2020-01-16 18:05:10,209 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 330 transitions. Word has length 19 [2020-01-16 18:05:10,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:10,210 INFO L478 AbstractCegarLoop]: Abstraction has 126 states and 330 transitions. [2020-01-16 18:05:10,210 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:10,210 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 330 transitions. [2020-01-16 18:05:10,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:10,210 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:10,210 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:10,210 INFO L426 AbstractCegarLoop]: === Iteration 561 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:10,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:10,211 INFO L82 PathProgramCache]: Analyzing trace with hash -916665526, now seen corresponding path program 557 times [2020-01-16 18:05:10,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:10,211 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890855116] [2020-01-16 18:05:10,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:10,415 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890855116] [2020-01-16 18:05:10,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:10,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:10,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589972203] [2020-01-16 18:05:10,416 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:10,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:10,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:10,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:10,416 INFO L87 Difference]: Start difference. First operand 126 states and 330 transitions. Second operand 8 states. [2020-01-16 18:05:10,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:10,484 INFO L93 Difference]: Finished difference Result 209 states and 459 transitions. [2020-01-16 18:05:10,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:10,484 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:10,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:10,485 INFO L225 Difference]: With dead ends: 209 [2020-01-16 18:05:10,485 INFO L226 Difference]: Without dead ends: 199 [2020-01-16 18:05:10,485 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-01-16 18:05:10,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 128. [2020-01-16 18:05:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-01-16 18:05:10,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 333 transitions. [2020-01-16 18:05:10,489 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 333 transitions. Word has length 19 [2020-01-16 18:05:10,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:10,489 INFO L478 AbstractCegarLoop]: Abstraction has 128 states and 333 transitions. [2020-01-16 18:05:10,489 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:10,489 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 333 transitions. [2020-01-16 18:05:10,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:10,490 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:10,490 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:10,490 INFO L426 AbstractCegarLoop]: === Iteration 562 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:10,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:10,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1771972180, now seen corresponding path program 558 times [2020-01-16 18:05:10,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:10,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143458223] [2020-01-16 18:05:10,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:10,679 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143458223] [2020-01-16 18:05:10,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:10,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:10,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128445724] [2020-01-16 18:05:10,680 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:10,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:10,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:10,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:10,680 INFO L87 Difference]: Start difference. First operand 128 states and 333 transitions. Second operand 8 states. [2020-01-16 18:05:10,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:10,762 INFO L93 Difference]: Finished difference Result 211 states and 462 transitions. [2020-01-16 18:05:10,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:10,763 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:10,763 INFO L225 Difference]: With dead ends: 211 [2020-01-16 18:05:10,763 INFO L226 Difference]: Without dead ends: 194 [2020-01-16 18:05:10,764 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-01-16 18:05:10,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 123. [2020-01-16 18:05:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-01-16 18:05:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 323 transitions. [2020-01-16 18:05:10,766 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 323 transitions. Word has length 19 [2020-01-16 18:05:10,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:10,767 INFO L478 AbstractCegarLoop]: Abstraction has 123 states and 323 transitions. [2020-01-16 18:05:10,767 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:10,767 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 323 transitions. [2020-01-16 18:05:10,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:10,767 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:10,767 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:10,767 INFO L426 AbstractCegarLoop]: === Iteration 563 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:10,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:10,767 INFO L82 PathProgramCache]: Analyzing trace with hash -2085582518, now seen corresponding path program 559 times [2020-01-16 18:05:10,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:10,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120432853] [2020-01-16 18:05:10,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:10,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120432853] [2020-01-16 18:05:10,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:10,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:10,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51566885] [2020-01-16 18:05:10,952 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:10,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:10,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:10,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:10,953 INFO L87 Difference]: Start difference. First operand 123 states and 323 transitions. Second operand 8 states. [2020-01-16 18:05:11,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:11,013 INFO L93 Difference]: Finished difference Result 215 states and 468 transitions. [2020-01-16 18:05:11,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:11,013 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:11,014 INFO L225 Difference]: With dead ends: 215 [2020-01-16 18:05:11,014 INFO L226 Difference]: Without dead ends: 199 [2020-01-16 18:05:11,014 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:11,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-01-16 18:05:11,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 123. [2020-01-16 18:05:11,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-01-16 18:05:11,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 320 transitions. [2020-01-16 18:05:11,017 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 320 transitions. Word has length 19 [2020-01-16 18:05:11,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:11,018 INFO L478 AbstractCegarLoop]: Abstraction has 123 states and 320 transitions. [2020-01-16 18:05:11,018 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:11,018 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 320 transitions. [2020-01-16 18:05:11,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:11,018 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:11,018 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:11,018 INFO L426 AbstractCegarLoop]: === Iteration 564 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:11,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:11,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1826524292, now seen corresponding path program 560 times [2020-01-16 18:05:11,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:11,019 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057752751] [2020-01-16 18:05:11,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:11,206 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057752751] [2020-01-16 18:05:11,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:11,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:11,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147174389] [2020-01-16 18:05:11,207 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:11,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:11,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:11,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:11,208 INFO L87 Difference]: Start difference. First operand 123 states and 320 transitions. Second operand 8 states. [2020-01-16 18:05:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:11,272 INFO L93 Difference]: Finished difference Result 209 states and 453 transitions. [2020-01-16 18:05:11,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:11,272 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:11,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:11,273 INFO L225 Difference]: With dead ends: 209 [2020-01-16 18:05:11,273 INFO L226 Difference]: Without dead ends: 196 [2020-01-16 18:05:11,273 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:11,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-01-16 18:05:11,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 120. [2020-01-16 18:05:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-01-16 18:05:11,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 313 transitions. [2020-01-16 18:05:11,276 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 313 transitions. Word has length 19 [2020-01-16 18:05:11,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:11,276 INFO L478 AbstractCegarLoop]: Abstraction has 120 states and 313 transitions. [2020-01-16 18:05:11,276 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:11,276 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 313 transitions. [2020-01-16 18:05:11,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:11,276 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:11,276 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:11,277 INFO L426 AbstractCegarLoop]: === Iteration 565 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:11,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:11,277 INFO L82 PathProgramCache]: Analyzing trace with hash -991490930, now seen corresponding path program 561 times [2020-01-16 18:05:11,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:11,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214495074] [2020-01-16 18:05:11,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:11,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214495074] [2020-01-16 18:05:11,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:11,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:11,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257882169] [2020-01-16 18:05:11,472 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:11,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:11,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:11,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:11,473 INFO L87 Difference]: Start difference. First operand 120 states and 313 transitions. Second operand 8 states. [2020-01-16 18:05:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:11,534 INFO L93 Difference]: Finished difference Result 213 states and 467 transitions. [2020-01-16 18:05:11,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:11,535 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:11,535 INFO L225 Difference]: With dead ends: 213 [2020-01-16 18:05:11,535 INFO L226 Difference]: Without dead ends: 197 [2020-01-16 18:05:11,536 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:11,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-01-16 18:05:11,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 126. [2020-01-16 18:05:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-01-16 18:05:11,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 324 transitions. [2020-01-16 18:05:11,539 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 324 transitions. Word has length 19 [2020-01-16 18:05:11,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:11,539 INFO L478 AbstractCegarLoop]: Abstraction has 126 states and 324 transitions. [2020-01-16 18:05:11,539 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:11,539 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 324 transitions. [2020-01-16 18:05:11,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:11,539 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:11,540 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:11,540 INFO L426 AbstractCegarLoop]: === Iteration 566 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:11,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:11,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1967695680, now seen corresponding path program 562 times [2020-01-16 18:05:11,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:11,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652963432] [2020-01-16 18:05:11,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:11,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652963432] [2020-01-16 18:05:11,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:11,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:11,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658997052] [2020-01-16 18:05:11,729 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:11,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:11,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:11,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:11,730 INFO L87 Difference]: Start difference. First operand 126 states and 324 transitions. Second operand 8 states. [2020-01-16 18:05:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:11,813 INFO L93 Difference]: Finished difference Result 201 states and 447 transitions. [2020-01-16 18:05:11,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:11,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:11,814 INFO L225 Difference]: With dead ends: 201 [2020-01-16 18:05:11,814 INFO L226 Difference]: Without dead ends: 182 [2020-01-16 18:05:11,814 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:11,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-01-16 18:05:11,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 120. [2020-01-16 18:05:11,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-01-16 18:05:11,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 310 transitions. [2020-01-16 18:05:11,817 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 310 transitions. Word has length 19 [2020-01-16 18:05:11,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:11,817 INFO L478 AbstractCegarLoop]: Abstraction has 120 states and 310 transitions. [2020-01-16 18:05:11,817 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:11,817 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 310 transitions. [2020-01-16 18:05:11,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:11,817 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:11,817 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:11,817 INFO L426 AbstractCegarLoop]: === Iteration 567 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:11,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:11,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1019871656, now seen corresponding path program 563 times [2020-01-16 18:05:11,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:11,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109865928] [2020-01-16 18:05:11,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:12,003 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109865928] [2020-01-16 18:05:12,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:12,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:12,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466364076] [2020-01-16 18:05:12,004 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:12,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:12,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:12,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:12,004 INFO L87 Difference]: Start difference. First operand 120 states and 310 transitions. Second operand 8 states. [2020-01-16 18:05:12,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:12,068 INFO L93 Difference]: Finished difference Result 203 states and 440 transitions. [2020-01-16 18:05:12,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:12,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:12,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:12,069 INFO L225 Difference]: With dead ends: 203 [2020-01-16 18:05:12,069 INFO L226 Difference]: Without dead ends: 193 [2020-01-16 18:05:12,069 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:12,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-01-16 18:05:12,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 122. [2020-01-16 18:05:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-01-16 18:05:12,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 313 transitions. [2020-01-16 18:05:12,073 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 313 transitions. Word has length 19 [2020-01-16 18:05:12,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:12,073 INFO L478 AbstractCegarLoop]: Abstraction has 122 states and 313 transitions. [2020-01-16 18:05:12,073 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:12,073 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 313 transitions. [2020-01-16 18:05:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:12,073 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:12,074 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:12,074 INFO L426 AbstractCegarLoop]: === Iteration 568 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:12,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:12,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1785690644, now seen corresponding path program 564 times [2020-01-16 18:05:12,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:12,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104148826] [2020-01-16 18:05:12,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:12,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104148826] [2020-01-16 18:05:12,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:12,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:12,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563398981] [2020-01-16 18:05:12,261 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:12,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:12,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:12,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:12,262 INFO L87 Difference]: Start difference. First operand 122 states and 313 transitions. Second operand 8 states. [2020-01-16 18:05:12,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:12,336 INFO L93 Difference]: Finished difference Result 197 states and 436 transitions. [2020-01-16 18:05:12,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:12,337 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:12,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:12,337 INFO L225 Difference]: With dead ends: 197 [2020-01-16 18:05:12,337 INFO L226 Difference]: Without dead ends: 179 [2020-01-16 18:05:12,338 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-01-16 18:05:12,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 117. [2020-01-16 18:05:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-01-16 18:05:12,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 303 transitions. [2020-01-16 18:05:12,341 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 303 transitions. Word has length 19 [2020-01-16 18:05:12,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:12,341 INFO L478 AbstractCegarLoop]: Abstraction has 117 states and 303 transitions. [2020-01-16 18:05:12,341 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:12,341 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 303 transitions. [2020-01-16 18:05:12,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:12,342 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:12,342 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:12,342 INFO L426 AbstractCegarLoop]: === Iteration 569 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:12,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:12,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1759986294, now seen corresponding path program 565 times [2020-01-16 18:05:12,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:12,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3090757] [2020-01-16 18:05:12,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:12,541 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3090757] [2020-01-16 18:05:12,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:12,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:12,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091222741] [2020-01-16 18:05:12,541 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:12,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:12,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:12,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:12,542 INFO L87 Difference]: Start difference. First operand 117 states and 303 transitions. Second operand 8 states. [2020-01-16 18:05:12,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:12,605 INFO L93 Difference]: Finished difference Result 207 states and 450 transitions. [2020-01-16 18:05:12,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:12,605 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:12,606 INFO L225 Difference]: With dead ends: 207 [2020-01-16 18:05:12,606 INFO L226 Difference]: Without dead ends: 191 [2020-01-16 18:05:12,606 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-01-16 18:05:12,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 117. [2020-01-16 18:05:12,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-01-16 18:05:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 298 transitions. [2020-01-16 18:05:12,610 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 298 transitions. Word has length 19 [2020-01-16 18:05:12,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:12,610 INFO L478 AbstractCegarLoop]: Abstraction has 117 states and 298 transitions. [2020-01-16 18:05:12,610 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:12,610 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 298 transitions. [2020-01-16 18:05:12,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:12,610 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:12,610 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:12,610 INFO L426 AbstractCegarLoop]: === Iteration 570 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:12,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:12,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1783918908, now seen corresponding path program 566 times [2020-01-16 18:05:12,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:12,611 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265570208] [2020-01-16 18:05:12,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:12,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265570208] [2020-01-16 18:05:12,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:12,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:12,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084783380] [2020-01-16 18:05:12,807 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:12,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:12,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:12,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:12,807 INFO L87 Difference]: Start difference. First operand 117 states and 298 transitions. Second operand 8 states. [2020-01-16 18:05:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:12,891 INFO L93 Difference]: Finished difference Result 203 states and 438 transitions. [2020-01-16 18:05:12,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:12,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:12,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:12,892 INFO L225 Difference]: With dead ends: 203 [2020-01-16 18:05:12,892 INFO L226 Difference]: Without dead ends: 186 [2020-01-16 18:05:12,893 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:12,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-01-16 18:05:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 112. [2020-01-16 18:05:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-01-16 18:05:12,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 284 transitions. [2020-01-16 18:05:12,896 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 284 transitions. Word has length 19 [2020-01-16 18:05:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:12,896 INFO L478 AbstractCegarLoop]: Abstraction has 112 states and 284 transitions. [2020-01-16 18:05:12,896 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:12,896 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 284 transitions. [2020-01-16 18:05:12,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:12,897 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:12,897 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:12,897 INFO L426 AbstractCegarLoop]: === Iteration 571 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:12,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:12,897 INFO L82 PathProgramCache]: Analyzing trace with hash 934543148, now seen corresponding path program 567 times [2020-01-16 18:05:12,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:12,897 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278253069] [2020-01-16 18:05:12,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:13,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:13,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278253069] [2020-01-16 18:05:13,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:13,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:13,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961743574] [2020-01-16 18:05:13,102 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:13,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:13,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:13,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:13,103 INFO L87 Difference]: Start difference. First operand 112 states and 284 transitions. Second operand 8 states. [2020-01-16 18:05:13,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:13,161 INFO L93 Difference]: Finished difference Result 195 states and 418 transitions. [2020-01-16 18:05:13,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:13,161 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:13,162 INFO L225 Difference]: With dead ends: 195 [2020-01-16 18:05:13,162 INFO L226 Difference]: Without dead ends: 179 [2020-01-16 18:05:13,162 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:13,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-01-16 18:05:13,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 104. [2020-01-16 18:05:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-01-16 18:05:13,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 263 transitions. [2020-01-16 18:05:13,165 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 263 transitions. Word has length 19 [2020-01-16 18:05:13,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:13,165 INFO L478 AbstractCegarLoop]: Abstraction has 104 states and 263 transitions. [2020-01-16 18:05:13,165 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:13,166 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 263 transitions. [2020-01-16 18:05:13,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:13,166 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:13,166 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:13,166 INFO L426 AbstractCegarLoop]: === Iteration 572 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:13,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:13,166 INFO L82 PathProgramCache]: Analyzing trace with hash -41661602, now seen corresponding path program 568 times [2020-01-16 18:05:13,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:13,167 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591842969] [2020-01-16 18:05:13,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:13,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591842969] [2020-01-16 18:05:13,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:13,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:13,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198902499] [2020-01-16 18:05:13,365 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:13,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:13,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:13,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:13,365 INFO L87 Difference]: Start difference. First operand 104 states and 263 transitions. Second operand 8 states. [2020-01-16 18:05:13,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:13,457 INFO L93 Difference]: Finished difference Result 183 states and 398 transitions. [2020-01-16 18:05:13,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:13,457 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:13,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:13,458 INFO L225 Difference]: With dead ends: 183 [2020-01-16 18:05:13,458 INFO L226 Difference]: Without dead ends: 164 [2020-01-16 18:05:13,458 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:13,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-01-16 18:05:13,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 98. [2020-01-16 18:05:13,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-01-16 18:05:13,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 247 transitions. [2020-01-16 18:05:13,461 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 247 transitions. Word has length 19 [2020-01-16 18:05:13,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:13,461 INFO L478 AbstractCegarLoop]: Abstraction has 98 states and 247 transitions. [2020-01-16 18:05:13,461 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:13,461 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 247 transitions. [2020-01-16 18:05:13,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:13,462 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:13,462 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:13,462 INFO L426 AbstractCegarLoop]: === Iteration 573 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:13,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:13,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1586342730, now seen corresponding path program 569 times [2020-01-16 18:05:13,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:13,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500878934] [2020-01-16 18:05:13,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:13,658 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500878934] [2020-01-16 18:05:13,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:13,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:13,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212003476] [2020-01-16 18:05:13,658 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:13,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:13,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:13,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:13,659 INFO L87 Difference]: Start difference. First operand 98 states and 247 transitions. Second operand 8 states. [2020-01-16 18:05:13,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:13,743 INFO L93 Difference]: Finished difference Result 180 states and 392 transitions. [2020-01-16 18:05:13,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:13,744 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:13,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:13,744 INFO L225 Difference]: With dead ends: 180 [2020-01-16 18:05:13,744 INFO L226 Difference]: Without dead ends: 168 [2020-01-16 18:05:13,745 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:13,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-01-16 18:05:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 102. [2020-01-16 18:05:13,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-01-16 18:05:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 255 transitions. [2020-01-16 18:05:13,747 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 255 transitions. Word has length 19 [2020-01-16 18:05:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:13,748 INFO L478 AbstractCegarLoop]: Abstraction has 102 states and 255 transitions. [2020-01-16 18:05:13,748 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 255 transitions. [2020-01-16 18:05:13,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:13,748 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:13,748 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:13,748 INFO L426 AbstractCegarLoop]: === Iteration 574 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:13,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:13,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1849750036, now seen corresponding path program 570 times [2020-01-16 18:05:13,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:13,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621740349] [2020-01-16 18:05:13,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:13,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621740349] [2020-01-16 18:05:13,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:13,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:13,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400062905] [2020-01-16 18:05:13,939 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:13,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:13,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:13,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:13,939 INFO L87 Difference]: Start difference. First operand 102 states and 255 transitions. Second operand 8 states. [2020-01-16 18:05:14,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:14,027 INFO L93 Difference]: Finished difference Result 167 states and 371 transitions. [2020-01-16 18:05:14,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:14,028 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:14,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:14,028 INFO L225 Difference]: With dead ends: 167 [2020-01-16 18:05:14,028 INFO L226 Difference]: Without dead ends: 145 [2020-01-16 18:05:14,028 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:14,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-01-16 18:05:14,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 93. [2020-01-16 18:05:14,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-01-16 18:05:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 235 transitions. [2020-01-16 18:05:14,031 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 235 transitions. Word has length 19 [2020-01-16 18:05:14,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:14,031 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 235 transitions. [2020-01-16 18:05:14,031 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:14,032 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 235 transitions. [2020-01-16 18:05:14,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:14,032 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:14,032 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:14,032 INFO L426 AbstractCegarLoop]: === Iteration 575 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:14,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:14,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1422262942, now seen corresponding path program 571 times [2020-01-16 18:05:14,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:14,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413755089] [2020-01-16 18:05:14,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:14,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413755089] [2020-01-16 18:05:14,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:14,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:14,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109722932] [2020-01-16 18:05:14,233 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:14,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:14,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:14,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:14,234 INFO L87 Difference]: Start difference. First operand 93 states and 235 transitions. Second operand 8 states. [2020-01-16 18:05:14,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:14,303 INFO L93 Difference]: Finished difference Result 172 states and 373 transitions. [2020-01-16 18:05:14,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:14,304 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:14,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:14,304 INFO L225 Difference]: With dead ends: 172 [2020-01-16 18:05:14,304 INFO L226 Difference]: Without dead ends: 162 [2020-01-16 18:05:14,304 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:14,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-01-16 18:05:14,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 97. [2020-01-16 18:05:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-01-16 18:05:14,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 245 transitions. [2020-01-16 18:05:14,307 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 245 transitions. Word has length 19 [2020-01-16 18:05:14,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:14,307 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 245 transitions. [2020-01-16 18:05:14,308 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 245 transitions. [2020-01-16 18:05:14,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:14,308 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:14,308 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:14,308 INFO L426 AbstractCegarLoop]: === Iteration 576 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:14,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:14,308 INFO L82 PathProgramCache]: Analyzing trace with hash 566956288, now seen corresponding path program 572 times [2020-01-16 18:05:14,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:14,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065022707] [2020-01-16 18:05:14,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:14,506 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065022707] [2020-01-16 18:05:14,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:14,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:14,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159785650] [2020-01-16 18:05:14,507 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:14,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:14,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:14,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:14,507 INFO L87 Difference]: Start difference. First operand 97 states and 245 transitions. Second operand 8 states. [2020-01-16 18:05:14,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:14,586 INFO L93 Difference]: Finished difference Result 174 states and 376 transitions. [2020-01-16 18:05:14,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:14,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:14,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:14,587 INFO L225 Difference]: With dead ends: 174 [2020-01-16 18:05:14,587 INFO L226 Difference]: Without dead ends: 160 [2020-01-16 18:05:14,587 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:14,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-01-16 18:05:14,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 95. [2020-01-16 18:05:14,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:05:14,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 240 transitions. [2020-01-16 18:05:14,590 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 240 transitions. Word has length 19 [2020-01-16 18:05:14,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:14,590 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 240 transitions. [2020-01-16 18:05:14,591 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:14,591 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 240 transitions. [2020-01-16 18:05:14,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:14,591 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:14,591 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:14,591 INFO L426 AbstractCegarLoop]: === Iteration 577 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:14,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:14,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1261763396, now seen corresponding path program 573 times [2020-01-16 18:05:14,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:14,592 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909798488] [2020-01-16 18:05:14,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:14,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909798488] [2020-01-16 18:05:14,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:14,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:14,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275231019] [2020-01-16 18:05:14,788 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:14,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:14,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:14,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:14,789 INFO L87 Difference]: Start difference. First operand 95 states and 240 transitions. Second operand 8 states. [2020-01-16 18:05:14,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:14,856 INFO L93 Difference]: Finished difference Result 168 states and 363 transitions. [2020-01-16 18:05:14,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:14,857 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:14,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:14,857 INFO L225 Difference]: With dead ends: 168 [2020-01-16 18:05:14,858 INFO L226 Difference]: Without dead ends: 158 [2020-01-16 18:05:14,858 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-01-16 18:05:14,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 97. [2020-01-16 18:05:14,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-01-16 18:05:14,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 243 transitions. [2020-01-16 18:05:14,861 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 243 transitions. Word has length 19 [2020-01-16 18:05:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:14,861 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 243 transitions. [2020-01-16 18:05:14,864 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:14,864 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 243 transitions. [2020-01-16 18:05:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:14,864 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:14,864 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:14,864 INFO L426 AbstractCegarLoop]: === Iteration 578 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:14,864 INFO L82 PathProgramCache]: Analyzing trace with hash 227641600, now seen corresponding path program 574 times [2020-01-16 18:05:14,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:14,865 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793414112] [2020-01-16 18:05:14,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:15,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793414112] [2020-01-16 18:05:15,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:15,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:15,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848210022] [2020-01-16 18:05:15,054 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:15,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:15,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:15,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:15,054 INFO L87 Difference]: Start difference. First operand 97 states and 243 transitions. Second operand 8 states. [2020-01-16 18:05:15,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:15,144 INFO L93 Difference]: Finished difference Result 162 states and 359 transitions. [2020-01-16 18:05:15,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:15,144 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:15,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:15,145 INFO L225 Difference]: With dead ends: 162 [2020-01-16 18:05:15,145 INFO L226 Difference]: Without dead ends: 147 [2020-01-16 18:05:15,145 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-01-16 18:05:15,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 95. [2020-01-16 18:05:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:05:15,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 238 transitions. [2020-01-16 18:05:15,148 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 238 transitions. Word has length 19 [2020-01-16 18:05:15,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:15,148 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 238 transitions. [2020-01-16 18:05:15,148 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:15,148 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 238 transitions. [2020-01-16 18:05:15,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:15,149 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:15,149 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:15,149 INFO L426 AbstractCegarLoop]: === Iteration 579 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:15,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:15,149 INFO L82 PathProgramCache]: Analyzing trace with hash -506129092, now seen corresponding path program 575 times [2020-01-16 18:05:15,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:15,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810065276] [2020-01-16 18:05:15,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:15,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810065276] [2020-01-16 18:05:15,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:15,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:15,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714991253] [2020-01-16 18:05:15,347 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:15,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:15,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:15,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:15,348 INFO L87 Difference]: Start difference. First operand 95 states and 238 transitions. Second operand 8 states. [2020-01-16 18:05:15,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:15,433 INFO L93 Difference]: Finished difference Result 155 states and 344 transitions. [2020-01-16 18:05:15,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:15,434 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:15,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:15,434 INFO L225 Difference]: With dead ends: 155 [2020-01-16 18:05:15,435 INFO L226 Difference]: Without dead ends: 143 [2020-01-16 18:05:15,435 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:15,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-01-16 18:05:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 99. [2020-01-16 18:05:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-01-16 18:05:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 246 transitions. [2020-01-16 18:05:15,437 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 246 transitions. Word has length 19 [2020-01-16 18:05:15,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:15,438 INFO L478 AbstractCegarLoop]: Abstraction has 99 states and 246 transitions. [2020-01-16 18:05:15,438 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 246 transitions. [2020-01-16 18:05:15,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:15,438 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:15,438 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:15,438 INFO L426 AbstractCegarLoop]: === Iteration 580 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:15,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:15,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1261763396, now seen corresponding path program 576 times [2020-01-16 18:05:15,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:15,439 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567001792] [2020-01-16 18:05:15,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:15,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567001792] [2020-01-16 18:05:15,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:15,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:15,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598909902] [2020-01-16 18:05:15,632 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:15,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:15,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:15,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:15,633 INFO L87 Difference]: Start difference. First operand 99 states and 246 transitions. Second operand 8 states. [2020-01-16 18:05:15,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:15,717 INFO L93 Difference]: Finished difference Result 142 states and 323 transitions. [2020-01-16 18:05:15,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:15,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:15,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:15,718 INFO L225 Difference]: With dead ends: 142 [2020-01-16 18:05:15,718 INFO L226 Difference]: Without dead ends: 120 [2020-01-16 18:05:15,718 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:15,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-01-16 18:05:15,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 90. [2020-01-16 18:05:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:05:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 229 transitions. [2020-01-16 18:05:15,721 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 229 transitions. Word has length 19 [2020-01-16 18:05:15,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:15,721 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 229 transitions. [2020-01-16 18:05:15,721 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 229 transitions. [2020-01-16 18:05:15,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:15,721 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:15,721 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:15,722 INFO L426 AbstractCegarLoop]: === Iteration 581 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:15,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:15,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1776969654, now seen corresponding path program 577 times [2020-01-16 18:05:15,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:15,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847841369] [2020-01-16 18:05:15,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:15,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847841369] [2020-01-16 18:05:15,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:15,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:15,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843664836] [2020-01-16 18:05:15,933 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:15,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:15,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:15,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:15,934 INFO L87 Difference]: Start difference. First operand 90 states and 229 transitions. Second operand 8 states. [2020-01-16 18:05:16,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:16,023 INFO L93 Difference]: Finished difference Result 165 states and 357 transitions. [2020-01-16 18:05:16,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:16,023 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:16,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:16,024 INFO L225 Difference]: With dead ends: 165 [2020-01-16 18:05:16,024 INFO L226 Difference]: Without dead ends: 155 [2020-01-16 18:05:16,024 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:16,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-01-16 18:05:16,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 93. [2020-01-16 18:05:16,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-01-16 18:05:16,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 237 transitions. [2020-01-16 18:05:16,027 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 237 transitions. Word has length 19 [2020-01-16 18:05:16,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:16,027 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 237 transitions. [2020-01-16 18:05:16,027 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:16,027 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 237 transitions. [2020-01-16 18:05:16,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:16,027 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:16,028 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:16,028 INFO L426 AbstractCegarLoop]: === Iteration 582 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:16,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:16,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2016611992, now seen corresponding path program 578 times [2020-01-16 18:05:16,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:16,028 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709045686] [2020-01-16 18:05:16,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:16,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:16,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709045686] [2020-01-16 18:05:16,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:16,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:16,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028204750] [2020-01-16 18:05:16,247 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:16,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:16,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:16,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:16,248 INFO L87 Difference]: Start difference. First operand 93 states and 237 transitions. Second operand 8 states. [2020-01-16 18:05:16,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:16,318 INFO L93 Difference]: Finished difference Result 165 states and 356 transitions. [2020-01-16 18:05:16,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:16,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:16,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:16,319 INFO L225 Difference]: With dead ends: 165 [2020-01-16 18:05:16,319 INFO L226 Difference]: Without dead ends: 154 [2020-01-16 18:05:16,319 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:16,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-01-16 18:05:16,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 92. [2020-01-16 18:05:16,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:05:16,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 235 transitions. [2020-01-16 18:05:16,321 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 235 transitions. Word has length 19 [2020-01-16 18:05:16,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:16,321 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 235 transitions. [2020-01-16 18:05:16,322 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:16,322 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 235 transitions. [2020-01-16 18:05:16,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:16,322 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:16,322 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:16,322 INFO L426 AbstractCegarLoop]: === Iteration 583 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:16,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:16,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1773295144, now seen corresponding path program 579 times [2020-01-16 18:05:16,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:16,322 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286143644] [2020-01-16 18:05:16,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:16,532 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286143644] [2020-01-16 18:05:16,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:16,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:16,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455354236] [2020-01-16 18:05:16,533 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:16,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:16,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:16,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:16,533 INFO L87 Difference]: Start difference. First operand 92 states and 235 transitions. Second operand 8 states. [2020-01-16 18:05:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:16,619 INFO L93 Difference]: Finished difference Result 168 states and 364 transitions. [2020-01-16 18:05:16,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:16,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:16,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:16,620 INFO L225 Difference]: With dead ends: 168 [2020-01-16 18:05:16,620 INFO L226 Difference]: Without dead ends: 158 [2020-01-16 18:05:16,620 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-01-16 18:05:16,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 94. [2020-01-16 18:05:16,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-01-16 18:05:16,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 238 transitions. [2020-01-16 18:05:16,622 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 238 transitions. Word has length 19 [2020-01-16 18:05:16,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:16,623 INFO L478 AbstractCegarLoop]: Abstraction has 94 states and 238 transitions. [2020-01-16 18:05:16,623 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:16,623 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 238 transitions. [2020-01-16 18:05:16,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:16,623 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:16,623 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:16,623 INFO L426 AbstractCegarLoop]: === Iteration 584 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:16,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:16,623 INFO L82 PathProgramCache]: Analyzing trace with hash -811058844, now seen corresponding path program 580 times [2020-01-16 18:05:16,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:16,624 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51125480] [2020-01-16 18:05:16,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:16,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51125480] [2020-01-16 18:05:16,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:16,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:16,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81156713] [2020-01-16 18:05:16,831 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:16,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:16,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:16,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:16,831 INFO L87 Difference]: Start difference. First operand 94 states and 238 transitions. Second operand 8 states. [2020-01-16 18:05:16,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:16,919 INFO L93 Difference]: Finished difference Result 170 states and 367 transitions. [2020-01-16 18:05:16,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:16,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:16,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:16,920 INFO L225 Difference]: With dead ends: 170 [2020-01-16 18:05:16,920 INFO L226 Difference]: Without dead ends: 156 [2020-01-16 18:05:16,920 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:16,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-01-16 18:05:16,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 92. [2020-01-16 18:05:16,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:05:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 234 transitions. [2020-01-16 18:05:16,922 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 234 transitions. Word has length 19 [2020-01-16 18:05:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:16,922 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 234 transitions. [2020-01-16 18:05:16,922 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:16,922 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 234 transitions. [2020-01-16 18:05:16,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:16,923 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:16,923 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:16,923 INFO L426 AbstractCegarLoop]: === Iteration 585 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:16,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:16,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1205269924, now seen corresponding path program 581 times [2020-01-16 18:05:16,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:16,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080505997] [2020-01-16 18:05:16,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:17,135 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080505997] [2020-01-16 18:05:17,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:17,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:17,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8437966] [2020-01-16 18:05:17,136 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:17,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:17,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:17,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:17,136 INFO L87 Difference]: Start difference. First operand 92 states and 234 transitions. Second operand 8 states. [2020-01-16 18:05:17,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:17,203 INFO L93 Difference]: Finished difference Result 168 states and 363 transitions. [2020-01-16 18:05:17,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:17,203 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:17,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:17,204 INFO L225 Difference]: With dead ends: 168 [2020-01-16 18:05:17,204 INFO L226 Difference]: Without dead ends: 158 [2020-01-16 18:05:17,204 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:17,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-01-16 18:05:17,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 94. [2020-01-16 18:05:17,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-01-16 18:05:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 237 transitions. [2020-01-16 18:05:17,207 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 237 transitions. Word has length 19 [2020-01-16 18:05:17,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:17,207 INFO L478 AbstractCegarLoop]: Abstraction has 94 states and 237 transitions. [2020-01-16 18:05:17,207 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 237 transitions. [2020-01-16 18:05:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:17,208 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:17,208 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:17,208 INFO L426 AbstractCegarLoop]: === Iteration 586 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:17,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:17,208 INFO L82 PathProgramCache]: Analyzing trace with hash 349963270, now seen corresponding path program 582 times [2020-01-16 18:05:17,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:17,208 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119005021] [2020-01-16 18:05:17,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:17,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119005021] [2020-01-16 18:05:17,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:17,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:17,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816856576] [2020-01-16 18:05:17,412 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:17,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:17,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:17,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:17,412 INFO L87 Difference]: Start difference. First operand 94 states and 237 transitions. Second operand 8 states. [2020-01-16 18:05:17,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:17,495 INFO L93 Difference]: Finished difference Result 170 states and 366 transitions. [2020-01-16 18:05:17,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:17,496 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:17,496 INFO L225 Difference]: With dead ends: 170 [2020-01-16 18:05:17,496 INFO L226 Difference]: Without dead ends: 155 [2020-01-16 18:05:17,496 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:17,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-01-16 18:05:17,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 91. [2020-01-16 18:05:17,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:05:17,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 232 transitions. [2020-01-16 18:05:17,499 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 232 transitions. Word has length 19 [2020-01-16 18:05:17,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:17,499 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 232 transitions. [2020-01-16 18:05:17,500 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:17,500 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 232 transitions. [2020-01-16 18:05:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:17,500 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:17,500 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:17,500 INFO L426 AbstractCegarLoop]: === Iteration 587 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:17,500 INFO L82 PathProgramCache]: Analyzing trace with hash 917559788, now seen corresponding path program 583 times [2020-01-16 18:05:17,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:17,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662266992] [2020-01-16 18:05:17,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:17,707 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662266992] [2020-01-16 18:05:17,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:17,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:17,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726887916] [2020-01-16 18:05:17,708 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:17,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:17,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:17,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:17,708 INFO L87 Difference]: Start difference. First operand 91 states and 232 transitions. Second operand 8 states. [2020-01-16 18:05:17,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:17,798 INFO L93 Difference]: Finished difference Result 163 states and 351 transitions. [2020-01-16 18:05:17,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:17,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:17,799 INFO L225 Difference]: With dead ends: 163 [2020-01-16 18:05:17,799 INFO L226 Difference]: Without dead ends: 153 [2020-01-16 18:05:17,799 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:17,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-01-16 18:05:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 93. [2020-01-16 18:05:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-01-16 18:05:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 236 transitions. [2020-01-16 18:05:17,802 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 236 transitions. Word has length 19 [2020-01-16 18:05:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:17,802 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 236 transitions. [2020-01-16 18:05:17,802 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 236 transitions. [2020-01-16 18:05:17,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:17,802 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:17,802 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:17,802 INFO L426 AbstractCegarLoop]: === Iteration 588 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:17,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:17,802 INFO L82 PathProgramCache]: Analyzing trace with hash 677917450, now seen corresponding path program 584 times [2020-01-16 18:05:17,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:17,803 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208311919] [2020-01-16 18:05:17,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:18,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208311919] [2020-01-16 18:05:18,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:18,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:18,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908616479] [2020-01-16 18:05:18,014 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:18,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:18,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:18,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:18,014 INFO L87 Difference]: Start difference. First operand 93 states and 236 transitions. Second operand 8 states. [2020-01-16 18:05:18,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:18,085 INFO L93 Difference]: Finished difference Result 163 states and 350 transitions. [2020-01-16 18:05:18,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:18,086 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:18,086 INFO L225 Difference]: With dead ends: 163 [2020-01-16 18:05:18,086 INFO L226 Difference]: Without dead ends: 152 [2020-01-16 18:05:18,087 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:18,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-01-16 18:05:18,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 92. [2020-01-16 18:05:18,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:05:18,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 234 transitions. [2020-01-16 18:05:18,089 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 234 transitions. Word has length 19 [2020-01-16 18:05:18,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:18,089 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 234 transitions. [2020-01-16 18:05:18,089 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:18,089 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 234 transitions. [2020-01-16 18:05:18,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:18,090 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:18,090 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:18,090 INFO L426 AbstractCegarLoop]: === Iteration 589 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:18,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:18,090 INFO L82 PathProgramCache]: Analyzing trace with hash -155525592, now seen corresponding path program 585 times [2020-01-16 18:05:18,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:18,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400496701] [2020-01-16 18:05:18,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:18,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400496701] [2020-01-16 18:05:18,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:18,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:18,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457342237] [2020-01-16 18:05:18,293 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:18,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:18,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:18,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:18,294 INFO L87 Difference]: Start difference. First operand 92 states and 234 transitions. Second operand 8 states. [2020-01-16 18:05:18,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:18,399 INFO L93 Difference]: Finished difference Result 165 states and 357 transitions. [2020-01-16 18:05:18,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:18,399 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:18,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:18,400 INFO L225 Difference]: With dead ends: 165 [2020-01-16 18:05:18,400 INFO L226 Difference]: Without dead ends: 155 [2020-01-16 18:05:18,400 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:18,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-01-16 18:05:18,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 94. [2020-01-16 18:05:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-01-16 18:05:18,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 237 transitions. [2020-01-16 18:05:18,403 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 237 transitions. Word has length 19 [2020-01-16 18:05:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:18,403 INFO L478 AbstractCegarLoop]: Abstraction has 94 states and 237 transitions. [2020-01-16 18:05:18,403 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:18,403 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 237 transitions. [2020-01-16 18:05:18,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:18,403 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:18,404 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:18,404 INFO L426 AbstractCegarLoop]: === Iteration 590 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:18,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:18,404 INFO L82 PathProgramCache]: Analyzing trace with hash 799453412, now seen corresponding path program 586 times [2020-01-16 18:05:18,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:18,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479397370] [2020-01-16 18:05:18,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:18,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479397370] [2020-01-16 18:05:18,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:18,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:18,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551623660] [2020-01-16 18:05:18,604 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:18,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:18,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:18,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:18,604 INFO L87 Difference]: Start difference. First operand 94 states and 237 transitions. Second operand 8 states. [2020-01-16 18:05:18,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:18,692 INFO L93 Difference]: Finished difference Result 159 states and 353 transitions. [2020-01-16 18:05:18,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:18,692 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:18,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:18,693 INFO L225 Difference]: With dead ends: 159 [2020-01-16 18:05:18,693 INFO L226 Difference]: Without dead ends: 144 [2020-01-16 18:05:18,693 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:18,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-01-16 18:05:18,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 92. [2020-01-16 18:05:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:05:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 233 transitions. [2020-01-16 18:05:18,695 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 233 transitions. Word has length 19 [2020-01-16 18:05:18,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:18,696 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 233 transitions. [2020-01-16 18:05:18,696 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:18,696 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 233 transitions. [2020-01-16 18:05:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:18,696 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:18,696 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:18,696 INFO L426 AbstractCegarLoop]: === Iteration 591 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:18,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:18,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1215773028, now seen corresponding path program 587 times [2020-01-16 18:05:18,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:18,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178699508] [2020-01-16 18:05:18,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:18,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178699508] [2020-01-16 18:05:18,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:18,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:18,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361456931] [2020-01-16 18:05:18,904 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:18,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:18,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:18,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:18,904 INFO L87 Difference]: Start difference. First operand 92 states and 233 transitions. Second operand 8 states. [2020-01-16 18:05:18,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:18,975 INFO L93 Difference]: Finished difference Result 165 states and 356 transitions. [2020-01-16 18:05:18,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:18,975 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:18,976 INFO L225 Difference]: With dead ends: 165 [2020-01-16 18:05:18,976 INFO L226 Difference]: Without dead ends: 155 [2020-01-16 18:05:18,976 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:18,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-01-16 18:05:18,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 94. [2020-01-16 18:05:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-01-16 18:05:18,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 236 transitions. [2020-01-16 18:05:18,978 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 236 transitions. Word has length 19 [2020-01-16 18:05:18,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:18,978 INFO L478 AbstractCegarLoop]: Abstraction has 94 states and 236 transitions. [2020-01-16 18:05:18,978 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:18,978 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 236 transitions. [2020-01-16 18:05:18,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:18,979 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:18,979 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:18,979 INFO L426 AbstractCegarLoop]: === Iteration 592 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:18,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:18,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1589789272, now seen corresponding path program 588 times [2020-01-16 18:05:18,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:18,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491664962] [2020-01-16 18:05:18,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:19,175 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491664962] [2020-01-16 18:05:19,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:19,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:19,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365856946] [2020-01-16 18:05:19,176 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:19,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:19,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:19,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:19,177 INFO L87 Difference]: Start difference. First operand 94 states and 236 transitions. Second operand 8 states. [2020-01-16 18:05:19,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:19,255 INFO L93 Difference]: Finished difference Result 159 states and 352 transitions. [2020-01-16 18:05:19,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:19,256 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:19,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:19,256 INFO L225 Difference]: With dead ends: 159 [2020-01-16 18:05:19,256 INFO L226 Difference]: Without dead ends: 143 [2020-01-16 18:05:19,257 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:19,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-01-16 18:05:19,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 91. [2020-01-16 18:05:19,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:05:19,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 231 transitions. [2020-01-16 18:05:19,259 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 231 transitions. Word has length 19 [2020-01-16 18:05:19,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:19,259 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 231 transitions. [2020-01-16 18:05:19,260 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:19,260 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 231 transitions. [2020-01-16 18:05:19,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:19,260 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:19,260 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:19,260 INFO L426 AbstractCegarLoop]: === Iteration 593 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:19,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1427580564, now seen corresponding path program 589 times [2020-01-16 18:05:19,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:19,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91203359] [2020-01-16 18:05:19,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:19,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91203359] [2020-01-16 18:05:19,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:19,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:19,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482812307] [2020-01-16 18:05:19,466 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:19,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:19,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:19,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:19,467 INFO L87 Difference]: Start difference. First operand 91 states and 231 transitions. Second operand 8 states. [2020-01-16 18:05:19,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:19,554 INFO L93 Difference]: Finished difference Result 161 states and 347 transitions. [2020-01-16 18:05:19,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:19,555 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:19,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:19,555 INFO L225 Difference]: With dead ends: 161 [2020-01-16 18:05:19,556 INFO L226 Difference]: Without dead ends: 151 [2020-01-16 18:05:19,556 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:19,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-01-16 18:05:19,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 95. [2020-01-16 18:05:19,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:05:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 241 transitions. [2020-01-16 18:05:19,558 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 241 transitions. Word has length 19 [2020-01-16 18:05:19,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:19,558 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 241 transitions. [2020-01-16 18:05:19,558 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:19,558 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 241 transitions. [2020-01-16 18:05:19,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:19,559 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:19,559 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:19,559 INFO L426 AbstractCegarLoop]: === Iteration 594 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:19,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:19,559 INFO L82 PathProgramCache]: Analyzing trace with hash 283032744, now seen corresponding path program 590 times [2020-01-16 18:05:19,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:19,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474515947] [2020-01-16 18:05:19,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:19,759 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474515947] [2020-01-16 18:05:19,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:19,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:19,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832428599] [2020-01-16 18:05:19,759 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:19,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:19,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:19,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:19,760 INFO L87 Difference]: Start difference. First operand 95 states and 241 transitions. Second operand 8 states. [2020-01-16 18:05:19,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:19,849 INFO L93 Difference]: Finished difference Result 163 states and 350 transitions. [2020-01-16 18:05:19,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:19,849 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:19,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:19,850 INFO L225 Difference]: With dead ends: 163 [2020-01-16 18:05:19,850 INFO L226 Difference]: Without dead ends: 149 [2020-01-16 18:05:19,850 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:19,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-01-16 18:05:19,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 93. [2020-01-16 18:05:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-01-16 18:05:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 236 transitions. [2020-01-16 18:05:19,853 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 236 transitions. Word has length 19 [2020-01-16 18:05:19,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:19,853 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 236 transitions. [2020-01-16 18:05:19,853 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:19,853 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 236 transitions. [2020-01-16 18:05:19,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:19,854 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:19,854 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:19,854 INFO L426 AbstractCegarLoop]: === Iteration 595 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:19,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:19,855 INFO L82 PathProgramCache]: Analyzing trace with hash 917559788, now seen corresponding path program 591 times [2020-01-16 18:05:19,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:19,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121323099] [2020-01-16 18:05:19,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:20,051 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121323099] [2020-01-16 18:05:20,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:20,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:20,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981781787] [2020-01-16 18:05:20,051 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:20,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:20,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:20,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:20,052 INFO L87 Difference]: Start difference. First operand 93 states and 236 transitions. Second operand 8 states. [2020-01-16 18:05:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:20,142 INFO L93 Difference]: Finished difference Result 158 states and 339 transitions. [2020-01-16 18:05:20,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:20,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:20,143 INFO L225 Difference]: With dead ends: 158 [2020-01-16 18:05:20,143 INFO L226 Difference]: Without dead ends: 148 [2020-01-16 18:05:20,143 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:20,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-01-16 18:05:20,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 95. [2020-01-16 18:05:20,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:05:20,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 239 transitions. [2020-01-16 18:05:20,146 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 239 transitions. Word has length 19 [2020-01-16 18:05:20,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:20,146 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 239 transitions. [2020-01-16 18:05:20,146 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:20,146 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 239 transitions. [2020-01-16 18:05:20,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:20,147 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:20,147 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:20,147 INFO L426 AbstractCegarLoop]: === Iteration 596 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:20,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:20,147 INFO L82 PathProgramCache]: Analyzing trace with hash -811487546, now seen corresponding path program 592 times [2020-01-16 18:05:20,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:20,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559962006] [2020-01-16 18:05:20,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:20,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:20,339 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559962006] [2020-01-16 18:05:20,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:20,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:20,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262044407] [2020-01-16 18:05:20,339 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:20,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:20,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:20,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:20,340 INFO L87 Difference]: Start difference. First operand 95 states and 239 transitions. Second operand 8 states. [2020-01-16 18:05:20,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:20,428 INFO L93 Difference]: Finished difference Result 152 states and 335 transitions. [2020-01-16 18:05:20,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:20,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:20,429 INFO L225 Difference]: With dead ends: 152 [2020-01-16 18:05:20,430 INFO L226 Difference]: Without dead ends: 137 [2020-01-16 18:05:20,430 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:20,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-01-16 18:05:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 93. [2020-01-16 18:05:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-01-16 18:05:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 234 transitions. [2020-01-16 18:05:20,432 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 234 transitions. Word has length 19 [2020-01-16 18:05:20,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:20,433 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 234 transitions. [2020-01-16 18:05:20,433 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:20,433 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 234 transitions. [2020-01-16 18:05:20,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:20,433 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:20,433 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:20,433 INFO L426 AbstractCegarLoop]: === Iteration 597 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:20,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:20,434 INFO L82 PathProgramCache]: Analyzing trace with hash -177389204, now seen corresponding path program 593 times [2020-01-16 18:05:20,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:20,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911240193] [2020-01-16 18:05:20,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:20,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911240193] [2020-01-16 18:05:20,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:20,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:20,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949117823] [2020-01-16 18:05:20,639 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:20,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:20,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:20,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:20,640 INFO L87 Difference]: Start difference. First operand 93 states and 234 transitions. Second operand 8 states. [2020-01-16 18:05:20,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:20,715 INFO L93 Difference]: Finished difference Result 153 states and 340 transitions. [2020-01-16 18:05:20,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:20,716 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:20,716 INFO L225 Difference]: With dead ends: 153 [2020-01-16 18:05:20,716 INFO L226 Difference]: Without dead ends: 141 [2020-01-16 18:05:20,716 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:20,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-01-16 18:05:20,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 97. [2020-01-16 18:05:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-01-16 18:05:20,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 242 transitions. [2020-01-16 18:05:20,719 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 242 transitions. Word has length 19 [2020-01-16 18:05:20,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:20,720 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 242 transitions. [2020-01-16 18:05:20,720 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:20,720 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 242 transitions. [2020-01-16 18:05:20,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:20,720 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:20,721 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:20,721 INFO L426 AbstractCegarLoop]: === Iteration 598 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:20,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:20,721 INFO L82 PathProgramCache]: Analyzing trace with hash 677917450, now seen corresponding path program 594 times [2020-01-16 18:05:20,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:20,721 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123286668] [2020-01-16 18:05:20,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:20,943 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123286668] [2020-01-16 18:05:20,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:20,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:20,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533438679] [2020-01-16 18:05:20,943 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:20,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:20,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:20,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:20,944 INFO L87 Difference]: Start difference. First operand 97 states and 242 transitions. Second operand 8 states. [2020-01-16 18:05:21,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:21,026 INFO L93 Difference]: Finished difference Result 140 states and 319 transitions. [2020-01-16 18:05:21,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:21,027 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:21,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:21,027 INFO L225 Difference]: With dead ends: 140 [2020-01-16 18:05:21,027 INFO L226 Difference]: Without dead ends: 121 [2020-01-16 18:05:21,028 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:21,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-01-16 18:05:21,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 91. [2020-01-16 18:05:21,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:05:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 230 transitions. [2020-01-16 18:05:21,030 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 230 transitions. Word has length 19 [2020-01-16 18:05:21,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:21,031 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 230 transitions. [2020-01-16 18:05:21,031 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 230 transitions. [2020-01-16 18:05:21,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:21,031 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:21,031 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:21,032 INFO L426 AbstractCegarLoop]: === Iteration 599 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:21,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:21,032 INFO L82 PathProgramCache]: Analyzing trace with hash 698923658, now seen corresponding path program 595 times [2020-01-16 18:05:21,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:21,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190900666] [2020-01-16 18:05:21,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:21,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:21,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190900666] [2020-01-16 18:05:21,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:21,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:21,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683359590] [2020-01-16 18:05:21,226 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:21,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:21,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:21,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:21,227 INFO L87 Difference]: Start difference. First operand 91 states and 230 transitions. Second operand 8 states. [2020-01-16 18:05:21,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:21,279 INFO L93 Difference]: Finished difference Result 140 states and 309 transitions. [2020-01-16 18:05:21,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:21,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:21,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:21,280 INFO L225 Difference]: With dead ends: 140 [2020-01-16 18:05:21,280 INFO L226 Difference]: Without dead ends: 130 [2020-01-16 18:05:21,280 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:21,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-01-16 18:05:21,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 95. [2020-01-16 18:05:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:05:21,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 240 transitions. [2020-01-16 18:05:21,282 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 240 transitions. Word has length 19 [2020-01-16 18:05:21,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:21,283 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 240 transitions. [2020-01-16 18:05:21,283 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:21,283 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 240 transitions. [2020-01-16 18:05:21,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:21,283 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:21,283 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:21,283 INFO L426 AbstractCegarLoop]: === Iteration 600 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:21,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:21,284 INFO L82 PathProgramCache]: Analyzing trace with hash -156382996, now seen corresponding path program 596 times [2020-01-16 18:05:21,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:21,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634290081] [2020-01-16 18:05:21,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:21,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634290081] [2020-01-16 18:05:21,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:21,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:21,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487223480] [2020-01-16 18:05:21,488 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:21,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:21,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:21,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:21,489 INFO L87 Difference]: Start difference. First operand 95 states and 240 transitions. Second operand 8 states. [2020-01-16 18:05:21,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:21,577 INFO L93 Difference]: Finished difference Result 142 states and 312 transitions. [2020-01-16 18:05:21,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:21,577 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:21,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:21,578 INFO L225 Difference]: With dead ends: 142 [2020-01-16 18:05:21,578 INFO L226 Difference]: Without dead ends: 128 [2020-01-16 18:05:21,578 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:21,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-01-16 18:05:21,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 93. [2020-01-16 18:05:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-01-16 18:05:21,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 235 transitions. [2020-01-16 18:05:21,581 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 235 transitions. Word has length 19 [2020-01-16 18:05:21,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:21,581 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 235 transitions. [2020-01-16 18:05:21,581 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:21,581 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 235 transitions. [2020-01-16 18:05:21,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:21,582 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:21,582 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:21,582 INFO L426 AbstractCegarLoop]: === Iteration 601 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:21,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:21,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1985102680, now seen corresponding path program 597 times [2020-01-16 18:05:21,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:21,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733008896] [2020-01-16 18:05:21,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:21,791 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733008896] [2020-01-16 18:05:21,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:21,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:21,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120983382] [2020-01-16 18:05:21,792 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:21,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:21,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:21,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:21,792 INFO L87 Difference]: Start difference. First operand 93 states and 235 transitions. Second operand 8 states. [2020-01-16 18:05:21,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:21,861 INFO L93 Difference]: Finished difference Result 136 states and 299 transitions. [2020-01-16 18:05:21,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:21,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:21,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:21,862 INFO L225 Difference]: With dead ends: 136 [2020-01-16 18:05:21,862 INFO L226 Difference]: Without dead ends: 126 [2020-01-16 18:05:21,862 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:21,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-01-16 18:05:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 95. [2020-01-16 18:05:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:05:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 238 transitions. [2020-01-16 18:05:21,864 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 238 transitions. Word has length 19 [2020-01-16 18:05:21,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:21,865 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 238 transitions. [2020-01-16 18:05:21,865 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:21,865 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 238 transitions. [2020-01-16 18:05:21,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:21,865 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:21,865 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:21,866 INFO L426 AbstractCegarLoop]: === Iteration 602 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:21,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:21,866 INFO L82 PathProgramCache]: Analyzing trace with hash -495697684, now seen corresponding path program 598 times [2020-01-16 18:05:21,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:21,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561601495] [2020-01-16 18:05:21,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:22,068 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561601495] [2020-01-16 18:05:22,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:22,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:22,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685829272] [2020-01-16 18:05:22,068 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:22,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:22,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:22,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:22,069 INFO L87 Difference]: Start difference. First operand 95 states and 238 transitions. Second operand 8 states. [2020-01-16 18:05:22,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:22,153 INFO L93 Difference]: Finished difference Result 130 states and 295 transitions. [2020-01-16 18:05:22,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:22,154 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:22,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:22,154 INFO L225 Difference]: With dead ends: 130 [2020-01-16 18:05:22,155 INFO L226 Difference]: Without dead ends: 115 [2020-01-16 18:05:22,155 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:22,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-01-16 18:05:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 93. [2020-01-16 18:05:22,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-01-16 18:05:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 233 transitions. [2020-01-16 18:05:22,157 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 233 transitions. Word has length 19 [2020-01-16 18:05:22,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:22,158 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 233 transitions. [2020-01-16 18:05:22,158 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:22,158 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 233 transitions. [2020-01-16 18:05:22,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:22,158 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:22,158 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:22,158 INFO L426 AbstractCegarLoop]: === Iteration 603 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:22,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:22,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1229468376, now seen corresponding path program 599 times [2020-01-16 18:05:22,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:22,158 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103029264] [2020-01-16 18:05:22,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:22,359 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103029264] [2020-01-16 18:05:22,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:22,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:22,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649353551] [2020-01-16 18:05:22,360 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:22,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:22,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:22,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:22,360 INFO L87 Difference]: Start difference. First operand 93 states and 233 transitions. Second operand 8 states. [2020-01-16 18:05:22,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:22,443 INFO L93 Difference]: Finished difference Result 123 states and 280 transitions. [2020-01-16 18:05:22,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:22,443 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:22,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:22,444 INFO L225 Difference]: With dead ends: 123 [2020-01-16 18:05:22,444 INFO L226 Difference]: Without dead ends: 111 [2020-01-16 18:05:22,444 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:22,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-01-16 18:05:22,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2020-01-16 18:05:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-01-16 18:05:22,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 241 transitions. [2020-01-16 18:05:22,446 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 241 transitions. Word has length 19 [2020-01-16 18:05:22,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:22,447 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 241 transitions. [2020-01-16 18:05:22,447 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:22,447 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 241 transitions. [2020-01-16 18:05:22,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:22,447 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:22,447 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:22,447 INFO L426 AbstractCegarLoop]: === Iteration 604 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:22,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1985102680, now seen corresponding path program 600 times [2020-01-16 18:05:22,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:22,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025298203] [2020-01-16 18:05:22,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:22,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025298203] [2020-01-16 18:05:22,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:22,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:22,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606564928] [2020-01-16 18:05:22,648 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:22,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:22,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:22,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:22,648 INFO L87 Difference]: Start difference. First operand 97 states and 241 transitions. Second operand 8 states. [2020-01-16 18:05:22,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:22,731 INFO L93 Difference]: Finished difference Result 110 states and 259 transitions. [2020-01-16 18:05:22,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:22,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:22,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:22,732 INFO L225 Difference]: With dead ends: 110 [2020-01-16 18:05:22,732 INFO L226 Difference]: Without dead ends: 88 [2020-01-16 18:05:22,732 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:22,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-01-16 18:05:22,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-01-16 18:05:22,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:05:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 225 transitions. [2020-01-16 18:05:22,734 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 225 transitions. Word has length 19 [2020-01-16 18:05:22,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:22,735 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 225 transitions. [2020-01-16 18:05:22,735 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:22,735 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 225 transitions. [2020-01-16 18:05:22,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:22,735 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:22,735 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:22,735 INFO L426 AbstractCegarLoop]: === Iteration 605 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:22,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:22,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1155542588, now seen corresponding path program 601 times [2020-01-16 18:05:22,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:22,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746869596] [2020-01-16 18:05:22,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:22,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746869596] [2020-01-16 18:05:22,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:22,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:22,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830345480] [2020-01-16 18:05:22,916 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:22,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:22,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:22,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:22,916 INFO L87 Difference]: Start difference. First operand 88 states and 225 transitions. Second operand 8 states. [2020-01-16 18:05:22,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:22,996 INFO L93 Difference]: Finished difference Result 155 states and 325 transitions. [2020-01-16 18:05:22,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:22,996 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:22,996 INFO L225 Difference]: With dead ends: 155 [2020-01-16 18:05:22,997 INFO L226 Difference]: Without dead ends: 141 [2020-01-16 18:05:22,997 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:22,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-01-16 18:05:22,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 91. [2020-01-16 18:05:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:05:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 231 transitions. [2020-01-16 18:05:22,999 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 231 transitions. Word has length 19 [2020-01-16 18:05:22,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:23,000 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 231 transitions. [2020-01-16 18:05:23,000 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:23,000 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 231 transitions. [2020-01-16 18:05:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:23,000 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:23,000 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:23,000 INFO L426 AbstractCegarLoop]: === Iteration 606 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:23,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:23,001 INFO L82 PathProgramCache]: Analyzing trace with hash 281207262, now seen corresponding path program 602 times [2020-01-16 18:05:23,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:23,001 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174595914] [2020-01-16 18:05:23,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:23,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:23,189 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174595914] [2020-01-16 18:05:23,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:23,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:23,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474495575] [2020-01-16 18:05:23,190 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:23,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:23,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:23,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:23,190 INFO L87 Difference]: Start difference. First operand 91 states and 231 transitions. Second operand 8 states. [2020-01-16 18:05:23,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:23,272 INFO L93 Difference]: Finished difference Result 151 states and 314 transitions. [2020-01-16 18:05:23,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:23,273 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:23,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:23,273 INFO L225 Difference]: With dead ends: 151 [2020-01-16 18:05:23,273 INFO L226 Difference]: Without dead ends: 139 [2020-01-16 18:05:23,273 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:23,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-01-16 18:05:23,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2020-01-16 18:05:23,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-01-16 18:05:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 227 transitions. [2020-01-16 18:05:23,276 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 227 transitions. Word has length 19 [2020-01-16 18:05:23,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:23,276 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 227 transitions. [2020-01-16 18:05:23,276 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:23,276 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 227 transitions. [2020-01-16 18:05:23,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:23,277 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:23,277 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:23,277 INFO L426 AbstractCegarLoop]: === Iteration 607 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:23,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:23,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1978402594, now seen corresponding path program 603 times [2020-01-16 18:05:23,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:23,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737302036] [2020-01-16 18:05:23,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:23,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737302036] [2020-01-16 18:05:23,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:23,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:23,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764036417] [2020-01-16 18:05:23,473 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:23,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:23,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:23,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:23,474 INFO L87 Difference]: Start difference. First operand 89 states and 227 transitions. Second operand 8 states. [2020-01-16 18:05:23,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:23,552 INFO L93 Difference]: Finished difference Result 155 states and 324 transitions. [2020-01-16 18:05:23,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:23,553 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:23,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:23,553 INFO L225 Difference]: With dead ends: 155 [2020-01-16 18:05:23,553 INFO L226 Difference]: Without dead ends: 141 [2020-01-16 18:05:23,553 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-01-16 18:05:23,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 91. [2020-01-16 18:05:23,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:05:23,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 230 transitions. [2020-01-16 18:05:23,556 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 230 transitions. Word has length 19 [2020-01-16 18:05:23,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:23,556 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 230 transitions. [2020-01-16 18:05:23,556 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:23,556 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 230 transitions. [2020-01-16 18:05:23,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:23,557 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:23,557 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:23,557 INFO L426 AbstractCegarLoop]: === Iteration 608 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:23,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:23,557 INFO L82 PathProgramCache]: Analyzing trace with hash -858272764, now seen corresponding path program 604 times [2020-01-16 18:05:23,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:23,557 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544379221] [2020-01-16 18:05:23,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:23,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544379221] [2020-01-16 18:05:23,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:23,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:23,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364222434] [2020-01-16 18:05:23,752 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:23,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:23,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:23,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:23,753 INFO L87 Difference]: Start difference. First operand 91 states and 230 transitions. Second operand 8 states. [2020-01-16 18:05:23,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:23,815 INFO L93 Difference]: Finished difference Result 151 states and 313 transitions. [2020-01-16 18:05:23,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:23,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:23,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:23,816 INFO L225 Difference]: With dead ends: 151 [2020-01-16 18:05:23,816 INFO L226 Difference]: Without dead ends: 139 [2020-01-16 18:05:23,816 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:23,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-01-16 18:05:23,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2020-01-16 18:05:23,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-01-16 18:05:23,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 226 transitions. [2020-01-16 18:05:23,819 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 226 transitions. Word has length 19 [2020-01-16 18:05:23,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:23,819 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 226 transitions. [2020-01-16 18:05:23,819 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:23,819 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 226 transitions. [2020-01-16 18:05:23,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:23,820 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:23,820 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:23,820 INFO L426 AbstractCegarLoop]: === Iteration 609 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:23,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:23,820 INFO L82 PathProgramCache]: Analyzing trace with hash -80774848, now seen corresponding path program 605 times [2020-01-16 18:05:23,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:23,821 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531815471] [2020-01-16 18:05:23,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:24,015 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531815471] [2020-01-16 18:05:24,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:24,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:24,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320900981] [2020-01-16 18:05:24,016 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:24,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:24,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:24,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:24,017 INFO L87 Difference]: Start difference. First operand 89 states and 226 transitions. Second operand 8 states. [2020-01-16 18:05:24,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:24,096 INFO L93 Difference]: Finished difference Result 146 states and 302 transitions. [2020-01-16 18:05:24,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:24,096 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:24,097 INFO L225 Difference]: With dead ends: 146 [2020-01-16 18:05:24,097 INFO L226 Difference]: Without dead ends: 136 [2020-01-16 18:05:24,097 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:24,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-01-16 18:05:24,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 90. [2020-01-16 18:05:24,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:05:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 227 transitions. [2020-01-16 18:05:24,100 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 227 transitions. Word has length 19 [2020-01-16 18:05:24,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:24,100 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 227 transitions. [2020-01-16 18:05:24,100 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:24,100 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 227 transitions. [2020-01-16 18:05:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:24,100 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:24,100 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:24,101 INFO L426 AbstractCegarLoop]: === Iteration 610 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:24,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:24,101 INFO L82 PathProgramCache]: Analyzing trace with hash -320417186, now seen corresponding path program 606 times [2020-01-16 18:05:24,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:24,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109825139] [2020-01-16 18:05:24,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:24,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:24,301 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109825139] [2020-01-16 18:05:24,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:24,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:24,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057060468] [2020-01-16 18:05:24,302 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:24,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:24,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:24,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:24,302 INFO L87 Difference]: Start difference. First operand 90 states and 227 transitions. Second operand 8 states. [2020-01-16 18:05:24,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:24,364 INFO L93 Difference]: Finished difference Result 146 states and 301 transitions. [2020-01-16 18:05:24,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:24,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:24,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:24,365 INFO L225 Difference]: With dead ends: 146 [2020-01-16 18:05:24,365 INFO L226 Difference]: Without dead ends: 134 [2020-01-16 18:05:24,365 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:24,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-01-16 18:05:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 88. [2020-01-16 18:05:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:05:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 224 transitions. [2020-01-16 18:05:24,367 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 224 transitions. Word has length 19 [2020-01-16 18:05:24,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:24,367 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 224 transitions. [2020-01-16 18:05:24,367 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:24,367 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 224 transitions. [2020-01-16 18:05:24,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:24,368 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:24,368 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:24,368 INFO L426 AbstractCegarLoop]: === Iteration 611 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:24,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:24,368 INFO L82 PathProgramCache]: Analyzing trace with hash -455398370, now seen corresponding path program 607 times [2020-01-16 18:05:24,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:24,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894006804] [2020-01-16 18:05:24,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:24,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:24,543 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894006804] [2020-01-16 18:05:24,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:24,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:24,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787004228] [2020-01-16 18:05:24,544 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:24,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:24,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:24,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:24,544 INFO L87 Difference]: Start difference. First operand 88 states and 224 transitions. Second operand 8 states. [2020-01-16 18:05:24,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:24,621 INFO L93 Difference]: Finished difference Result 161 states and 343 transitions. [2020-01-16 18:05:24,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:24,621 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:24,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:24,622 INFO L225 Difference]: With dead ends: 161 [2020-01-16 18:05:24,622 INFO L226 Difference]: Without dead ends: 147 [2020-01-16 18:05:24,622 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:24,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-01-16 18:05:24,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 92. [2020-01-16 18:05:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:05:24,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 234 transitions. [2020-01-16 18:05:24,624 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 234 transitions. Word has length 19 [2020-01-16 18:05:24,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:24,624 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 234 transitions. [2020-01-16 18:05:24,625 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 234 transitions. [2020-01-16 18:05:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:24,625 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:24,625 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:24,625 INFO L426 AbstractCegarLoop]: === Iteration 612 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:24,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:24,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1329733696, now seen corresponding path program 608 times [2020-01-16 18:05:24,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:24,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311833967] [2020-01-16 18:05:24,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:24,798 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311833967] [2020-01-16 18:05:24,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:24,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:24,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829357223] [2020-01-16 18:05:24,799 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:24,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:24,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:24,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:24,799 INFO L87 Difference]: Start difference. First operand 92 states and 234 transitions. Second operand 8 states. [2020-01-16 18:05:24,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:24,879 INFO L93 Difference]: Finished difference Result 157 states and 332 transitions. [2020-01-16 18:05:24,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:24,879 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:24,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:24,880 INFO L225 Difference]: With dead ends: 157 [2020-01-16 18:05:24,880 INFO L226 Difference]: Without dead ends: 145 [2020-01-16 18:05:24,880 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:24,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-01-16 18:05:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 90. [2020-01-16 18:05:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:05:24,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 229 transitions. [2020-01-16 18:05:24,884 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 229 transitions. Word has length 19 [2020-01-16 18:05:24,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:24,884 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 229 transitions. [2020-01-16 18:05:24,884 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:24,884 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 229 transitions. [2020-01-16 18:05:24,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:24,884 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:24,885 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:24,885 INFO L426 AbstractCegarLoop]: === Iteration 613 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:24,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:24,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1034006626, now seen corresponding path program 609 times [2020-01-16 18:05:24,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:24,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277441758] [2020-01-16 18:05:24,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:25,081 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277441758] [2020-01-16 18:05:25,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:25,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:25,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986145046] [2020-01-16 18:05:25,081 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:25,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:25,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:25,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:25,082 INFO L87 Difference]: Start difference. First operand 90 states and 229 transitions. Second operand 8 states. [2020-01-16 18:05:25,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:25,161 INFO L93 Difference]: Finished difference Result 165 states and 353 transitions. [2020-01-16 18:05:25,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:25,161 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:25,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:25,162 INFO L225 Difference]: With dead ends: 165 [2020-01-16 18:05:25,162 INFO L226 Difference]: Without dead ends: 151 [2020-01-16 18:05:25,162 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:25,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-01-16 18:05:25,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 94. [2020-01-16 18:05:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-01-16 18:05:25,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 237 transitions. [2020-01-16 18:05:25,164 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 237 transitions. Word has length 19 [2020-01-16 18:05:25,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:25,165 INFO L478 AbstractCegarLoop]: Abstraction has 94 states and 237 transitions. [2020-01-16 18:05:25,165 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:25,165 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 237 transitions. [2020-01-16 18:05:25,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:25,165 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:25,165 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:25,165 INFO L426 AbstractCegarLoop]: === Iteration 614 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:25,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:25,165 INFO L82 PathProgramCache]: Analyzing trace with hash 288709482, now seen corresponding path program 610 times [2020-01-16 18:05:25,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:25,166 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460459479] [2020-01-16 18:05:25,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:25,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:25,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460459479] [2020-01-16 18:05:25,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:25,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:25,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561631122] [2020-01-16 18:05:25,339 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:25,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:25,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:25,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:25,340 INFO L87 Difference]: Start difference. First operand 94 states and 237 transitions. Second operand 8 states. [2020-01-16 18:05:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:25,423 INFO L93 Difference]: Finished difference Result 163 states and 345 transitions. [2020-01-16 18:05:25,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:25,423 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:25,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:25,423 INFO L225 Difference]: With dead ends: 163 [2020-01-16 18:05:25,424 INFO L226 Difference]: Without dead ends: 147 [2020-01-16 18:05:25,424 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-01-16 18:05:25,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 90. [2020-01-16 18:05:25,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:05:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 227 transitions. [2020-01-16 18:05:25,426 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 227 transitions. Word has length 19 [2020-01-16 18:05:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:25,426 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 227 transitions. [2020-01-16 18:05:25,426 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:25,426 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 227 transitions. [2020-01-16 18:05:25,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:25,427 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:25,427 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:25,427 INFO L426 AbstractCegarLoop]: === Iteration 615 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:25,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:25,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1901188502, now seen corresponding path program 611 times [2020-01-16 18:05:25,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:25,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496872740] [2020-01-16 18:05:25,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:25,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496872740] [2020-01-16 18:05:25,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:25,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:25,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883460355] [2020-01-16 18:05:25,603 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:25,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:25,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:25,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:25,604 INFO L87 Difference]: Start difference. First operand 90 states and 227 transitions. Second operand 8 states. [2020-01-16 18:05:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:25,680 INFO L93 Difference]: Finished difference Result 155 states and 326 transitions. [2020-01-16 18:05:25,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:25,681 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:25,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:25,681 INFO L225 Difference]: With dead ends: 155 [2020-01-16 18:05:25,681 INFO L226 Difference]: Without dead ends: 145 [2020-01-16 18:05:25,682 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:25,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-01-16 18:05:25,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 92. [2020-01-16 18:05:25,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:05:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 230 transitions. [2020-01-16 18:05:25,684 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 230 transitions. Word has length 19 [2020-01-16 18:05:25,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:25,684 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 230 transitions. [2020-01-16 18:05:25,684 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:25,684 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 230 transitions. [2020-01-16 18:05:25,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:25,685 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:25,685 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:25,685 INFO L426 AbstractCegarLoop]: === Iteration 616 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:25,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:25,685 INFO L82 PathProgramCache]: Analyzing trace with hash -190575194, now seen corresponding path program 612 times [2020-01-16 18:05:25,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:25,685 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23170205] [2020-01-16 18:05:25,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:25,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23170205] [2020-01-16 18:05:25,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:25,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:25,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204115592] [2020-01-16 18:05:25,878 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:25,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:25,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:25,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:25,879 INFO L87 Difference]: Start difference. First operand 92 states and 230 transitions. Second operand 8 states. [2020-01-16 18:05:25,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:25,960 INFO L93 Difference]: Finished difference Result 157 states and 329 transitions. [2020-01-16 18:05:25,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:25,960 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:25,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:25,961 INFO L225 Difference]: With dead ends: 157 [2020-01-16 18:05:25,961 INFO L226 Difference]: Without dead ends: 141 [2020-01-16 18:05:25,961 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:25,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-01-16 18:05:25,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 88. [2020-01-16 18:05:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:05:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 223 transitions. [2020-01-16 18:05:25,963 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 223 transitions. Word has length 19 [2020-01-16 18:05:25,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:25,963 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 223 transitions. [2020-01-16 18:05:25,963 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:25,963 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 223 transitions. [2020-01-16 18:05:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:25,964 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:25,964 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:25,964 INFO L426 AbstractCegarLoop]: === Iteration 617 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:25,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:25,964 INFO L82 PathProgramCache]: Analyzing trace with hash -884311006, now seen corresponding path program 613 times [2020-01-16 18:05:25,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:25,964 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388399239] [2020-01-16 18:05:25,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:26,140 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388399239] [2020-01-16 18:05:26,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:26,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:26,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619813482] [2020-01-16 18:05:26,140 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:26,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:26,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:26,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:26,141 INFO L87 Difference]: Start difference. First operand 88 states and 223 transitions. Second operand 8 states. [2020-01-16 18:05:26,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:26,217 INFO L93 Difference]: Finished difference Result 161 states and 342 transitions. [2020-01-16 18:05:26,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:26,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:26,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:26,218 INFO L225 Difference]: With dead ends: 161 [2020-01-16 18:05:26,218 INFO L226 Difference]: Without dead ends: 147 [2020-01-16 18:05:26,218 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:26,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-01-16 18:05:26,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 92. [2020-01-16 18:05:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:05:26,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 233 transitions. [2020-01-16 18:05:26,221 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 233 transitions. Word has length 19 [2020-01-16 18:05:26,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:26,221 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 233 transitions. [2020-01-16 18:05:26,221 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:26,222 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 233 transitions. [2020-01-16 18:05:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:26,222 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:26,222 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:26,222 INFO L426 AbstractCegarLoop]: === Iteration 618 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:26,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:26,223 INFO L82 PathProgramCache]: Analyzing trace with hash 235818824, now seen corresponding path program 614 times [2020-01-16 18:05:26,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:26,223 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371892140] [2020-01-16 18:05:26,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:26,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:26,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371892140] [2020-01-16 18:05:26,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:26,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:26,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648197627] [2020-01-16 18:05:26,398 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:26,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:26,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:26,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:26,399 INFO L87 Difference]: Start difference. First operand 92 states and 233 transitions. Second operand 8 states. [2020-01-16 18:05:26,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:26,458 INFO L93 Difference]: Finished difference Result 157 states and 331 transitions. [2020-01-16 18:05:26,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:26,458 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:26,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:26,459 INFO L225 Difference]: With dead ends: 157 [2020-01-16 18:05:26,459 INFO L226 Difference]: Without dead ends: 145 [2020-01-16 18:05:26,459 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-01-16 18:05:26,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 90. [2020-01-16 18:05:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:05:26,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 228 transitions. [2020-01-16 18:05:26,461 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 228 transitions. Word has length 19 [2020-01-16 18:05:26,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:26,461 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 228 transitions. [2020-01-16 18:05:26,461 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:26,462 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 228 transitions. [2020-01-16 18:05:26,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:26,462 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:26,462 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:26,462 INFO L426 AbstractCegarLoop]: === Iteration 619 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:26,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:26,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1629013504, now seen corresponding path program 615 times [2020-01-16 18:05:26,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:26,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320745020] [2020-01-16 18:05:26,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:26,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:26,638 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320745020] [2020-01-16 18:05:26,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:26,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:26,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887171903] [2020-01-16 18:05:26,638 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:26,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:26,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:26,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:26,639 INFO L87 Difference]: Start difference. First operand 90 states and 228 transitions. Second operand 8 states. [2020-01-16 18:05:26,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:26,708 INFO L93 Difference]: Finished difference Result 165 states and 352 transitions. [2020-01-16 18:05:26,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:26,708 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:26,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:26,709 INFO L225 Difference]: With dead ends: 165 [2020-01-16 18:05:26,709 INFO L226 Difference]: Without dead ends: 151 [2020-01-16 18:05:26,709 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:26,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-01-16 18:05:26,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 94. [2020-01-16 18:05:26,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-01-16 18:05:26,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 236 transitions. [2020-01-16 18:05:26,712 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 236 transitions. Word has length 19 [2020-01-16 18:05:26,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:26,712 INFO L478 AbstractCegarLoop]: Abstraction has 94 states and 236 transitions. [2020-01-16 18:05:26,712 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:26,712 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 236 transitions. [2020-01-16 18:05:26,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:26,712 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:26,712 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:26,712 INFO L426 AbstractCegarLoop]: === Iteration 620 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:26,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:26,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1920656648, now seen corresponding path program 616 times [2020-01-16 18:05:26,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:26,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854785701] [2020-01-16 18:05:26,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:26,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854785701] [2020-01-16 18:05:26,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:26,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:26,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181458649] [2020-01-16 18:05:26,888 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:26,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:26,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:26,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:26,889 INFO L87 Difference]: Start difference. First operand 94 states and 236 transitions. Second operand 8 states. [2020-01-16 18:05:26,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:26,967 INFO L93 Difference]: Finished difference Result 163 states and 344 transitions. [2020-01-16 18:05:26,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:26,967 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:26,968 INFO L225 Difference]: With dead ends: 163 [2020-01-16 18:05:26,968 INFO L226 Difference]: Without dead ends: 147 [2020-01-16 18:05:26,968 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:26,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-01-16 18:05:26,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 90. [2020-01-16 18:05:26,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:05:26,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 226 transitions. [2020-01-16 18:05:26,970 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 226 transitions. Word has length 19 [2020-01-16 18:05:26,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:26,970 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 226 transitions. [2020-01-16 18:05:26,971 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:26,971 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 226 transitions. [2020-01-16 18:05:26,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:26,971 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:26,971 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:26,971 INFO L426 AbstractCegarLoop]: === Iteration 621 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:26,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:26,971 INFO L82 PathProgramCache]: Analyzing trace with hash -299410978, now seen corresponding path program 617 times [2020-01-16 18:05:26,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:26,971 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323466932] [2020-01-16 18:05:26,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:27,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323466932] [2020-01-16 18:05:27,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:27,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:27,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101487643] [2020-01-16 18:05:27,156 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:27,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:27,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:27,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:27,157 INFO L87 Difference]: Start difference. First operand 90 states and 226 transitions. Second operand 8 states. [2020-01-16 18:05:27,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:27,216 INFO L93 Difference]: Finished difference Result 155 states and 325 transitions. [2020-01-16 18:05:27,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:27,216 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:27,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:27,216 INFO L225 Difference]: With dead ends: 155 [2020-01-16 18:05:27,217 INFO L226 Difference]: Without dead ends: 145 [2020-01-16 18:05:27,217 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:27,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-01-16 18:05:27,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 92. [2020-01-16 18:05:27,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:05:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 229 transitions. [2020-01-16 18:05:27,219 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 229 transitions. Word has length 19 [2020-01-16 18:05:27,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:27,220 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 229 transitions. [2020-01-16 18:05:27,220 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 229 transitions. [2020-01-16 18:05:27,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:27,220 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:27,220 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:27,220 INFO L426 AbstractCegarLoop]: === Iteration 622 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:27,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:27,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1154717632, now seen corresponding path program 618 times [2020-01-16 18:05:27,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:27,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305031664] [2020-01-16 18:05:27,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:27,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305031664] [2020-01-16 18:05:27,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:27,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:27,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925432471] [2020-01-16 18:05:27,406 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:27,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:27,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:27,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:27,407 INFO L87 Difference]: Start difference. First operand 92 states and 229 transitions. Second operand 8 states. [2020-01-16 18:05:27,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:27,487 INFO L93 Difference]: Finished difference Result 157 states and 328 transitions. [2020-01-16 18:05:27,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:27,487 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:27,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:27,488 INFO L225 Difference]: With dead ends: 157 [2020-01-16 18:05:27,488 INFO L226 Difference]: Without dead ends: 141 [2020-01-16 18:05:27,488 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:27,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-01-16 18:05:27,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 88. [2020-01-16 18:05:27,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:05:27,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 222 transitions. [2020-01-16 18:05:27,490 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 222 transitions. Word has length 19 [2020-01-16 18:05:27,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:27,490 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 222 transitions. [2020-01-16 18:05:27,490 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:27,491 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 222 transitions. [2020-01-16 18:05:27,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:27,491 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:27,491 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:27,491 INFO L426 AbstractCegarLoop]: === Iteration 623 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:27,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:27,491 INFO L82 PathProgramCache]: Analyzing trace with hash 506970474, now seen corresponding path program 619 times [2020-01-16 18:05:27,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:27,491 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528342635] [2020-01-16 18:05:27,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:27,696 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528342635] [2020-01-16 18:05:27,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:27,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:27,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350808345] [2020-01-16 18:05:27,696 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:27,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:27,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:27,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:27,697 INFO L87 Difference]: Start difference. First operand 88 states and 222 transitions. Second operand 8 states. [2020-01-16 18:05:27,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:27,765 INFO L93 Difference]: Finished difference Result 144 states and 297 transitions. [2020-01-16 18:05:27,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:27,766 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:27,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:27,766 INFO L225 Difference]: With dead ends: 144 [2020-01-16 18:05:27,767 INFO L226 Difference]: Without dead ends: 134 [2020-01-16 18:05:27,767 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:27,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-01-16 18:05:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 90. [2020-01-16 18:05:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:05:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 226 transitions. [2020-01-16 18:05:27,769 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 226 transitions. Word has length 19 [2020-01-16 18:05:27,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:27,769 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 226 transitions. [2020-01-16 18:05:27,770 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 226 transitions. [2020-01-16 18:05:27,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:27,770 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:27,770 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:27,770 INFO L426 AbstractCegarLoop]: === Iteration 624 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:27,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:27,771 INFO L82 PathProgramCache]: Analyzing trace with hash 267328136, now seen corresponding path program 620 times [2020-01-16 18:05:27,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:27,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308808134] [2020-01-16 18:05:27,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:27,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308808134] [2020-01-16 18:05:27,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:27,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:27,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246613831] [2020-01-16 18:05:27,975 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:27,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:27,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:27,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:27,975 INFO L87 Difference]: Start difference. First operand 90 states and 226 transitions. Second operand 8 states. [2020-01-16 18:05:28,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:28,031 INFO L93 Difference]: Finished difference Result 144 states and 296 transitions. [2020-01-16 18:05:28,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:28,031 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:28,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:28,032 INFO L225 Difference]: With dead ends: 144 [2020-01-16 18:05:28,032 INFO L226 Difference]: Without dead ends: 133 [2020-01-16 18:05:28,032 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:28,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-01-16 18:05:28,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 89. [2020-01-16 18:05:28,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-01-16 18:05:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 224 transitions. [2020-01-16 18:05:28,034 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 224 transitions. Word has length 19 [2020-01-16 18:05:28,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:28,034 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 224 transitions. [2020-01-16 18:05:28,034 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:28,034 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 224 transitions. [2020-01-16 18:05:28,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:28,035 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:28,035 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:28,035 INFO L426 AbstractCegarLoop]: === Iteration 625 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:28,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:28,035 INFO L82 PathProgramCache]: Analyzing trace with hash -237732024, now seen corresponding path program 621 times [2020-01-16 18:05:28,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:28,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802880965] [2020-01-16 18:05:28,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:28,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802880965] [2020-01-16 18:05:28,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:28,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:28,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322988661] [2020-01-16 18:05:28,229 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:28,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:28,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:28,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:28,230 INFO L87 Difference]: Start difference. First operand 89 states and 224 transitions. Second operand 8 states. [2020-01-16 18:05:28,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:28,308 INFO L93 Difference]: Finished difference Result 147 states and 304 transitions. [2020-01-16 18:05:28,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:28,309 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:28,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:28,309 INFO L225 Difference]: With dead ends: 147 [2020-01-16 18:05:28,310 INFO L226 Difference]: Without dead ends: 137 [2020-01-16 18:05:28,310 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:28,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-01-16 18:05:28,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 91. [2020-01-16 18:05:28,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:05:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 227 transitions. [2020-01-16 18:05:28,312 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 227 transitions. Word has length 19 [2020-01-16 18:05:28,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:28,313 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 227 transitions. [2020-01-16 18:05:28,313 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:28,313 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 227 transitions. [2020-01-16 18:05:28,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:28,313 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:28,313 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:28,313 INFO L426 AbstractCegarLoop]: === Iteration 626 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:28,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:28,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1472881284, now seen corresponding path program 622 times [2020-01-16 18:05:28,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:28,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957629667] [2020-01-16 18:05:28,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:28,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:28,515 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957629667] [2020-01-16 18:05:28,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:28,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:28,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524562182] [2020-01-16 18:05:28,515 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:28,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:28,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:28,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:28,515 INFO L87 Difference]: Start difference. First operand 91 states and 227 transitions. Second operand 8 states. [2020-01-16 18:05:28,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:28,594 INFO L93 Difference]: Finished difference Result 149 states and 307 transitions. [2020-01-16 18:05:28,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:28,594 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:28,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:28,595 INFO L225 Difference]: With dead ends: 149 [2020-01-16 18:05:28,595 INFO L226 Difference]: Without dead ends: 135 [2020-01-16 18:05:28,595 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:28,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-01-16 18:05:28,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 89. [2020-01-16 18:05:28,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-01-16 18:05:28,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 223 transitions. [2020-01-16 18:05:28,598 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 223 transitions. Word has length 19 [2020-01-16 18:05:28,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:28,598 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 223 transitions. [2020-01-16 18:05:28,598 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:28,598 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 223 transitions. [2020-01-16 18:05:28,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:28,598 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:28,599 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:28,599 INFO L426 AbstractCegarLoop]: === Iteration 627 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:28,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:28,599 INFO L82 PathProgramCache]: Analyzing trace with hash -805757244, now seen corresponding path program 623 times [2020-01-16 18:05:28,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:28,599 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077133084] [2020-01-16 18:05:28,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:28,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077133084] [2020-01-16 18:05:28,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:28,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:28,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322267022] [2020-01-16 18:05:28,803 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:28,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:28,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:28,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:28,804 INFO L87 Difference]: Start difference. First operand 89 states and 223 transitions. Second operand 8 states. [2020-01-16 18:05:28,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:28,864 INFO L93 Difference]: Finished difference Result 147 states and 303 transitions. [2020-01-16 18:05:28,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:28,864 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:28,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:28,865 INFO L225 Difference]: With dead ends: 147 [2020-01-16 18:05:28,865 INFO L226 Difference]: Without dead ends: 137 [2020-01-16 18:05:28,865 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:28,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-01-16 18:05:28,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 91. [2020-01-16 18:05:28,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:05:28,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 226 transitions. [2020-01-16 18:05:28,867 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 226 transitions. Word has length 19 [2020-01-16 18:05:28,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:28,868 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 226 transitions. [2020-01-16 18:05:28,868 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:28,868 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 226 transitions. [2020-01-16 18:05:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:28,868 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:28,868 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:28,868 INFO L426 AbstractCegarLoop]: === Iteration 628 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:28,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:28,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1661063898, now seen corresponding path program 624 times [2020-01-16 18:05:28,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:28,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375140205] [2020-01-16 18:05:28,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:29,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:29,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375140205] [2020-01-16 18:05:29,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:29,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:29,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627235166] [2020-01-16 18:05:29,063 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:29,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:29,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:29,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:29,063 INFO L87 Difference]: Start difference. First operand 91 states and 226 transitions. Second operand 8 states. [2020-01-16 18:05:29,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:29,137 INFO L93 Difference]: Finished difference Result 149 states and 306 transitions. [2020-01-16 18:05:29,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:29,137 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:29,138 INFO L225 Difference]: With dead ends: 149 [2020-01-16 18:05:29,138 INFO L226 Difference]: Without dead ends: 133 [2020-01-16 18:05:29,138 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:29,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-01-16 18:05:29,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 87. [2020-01-16 18:05:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-01-16 18:05:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 220 transitions. [2020-01-16 18:05:29,140 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 220 transitions. Word has length 19 [2020-01-16 18:05:29,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:29,140 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 220 transitions. [2020-01-16 18:05:29,140 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 220 transitions. [2020-01-16 18:05:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:29,141 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:29,141 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:29,141 INFO L426 AbstractCegarLoop]: === Iteration 629 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:29,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:29,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1213390630, now seen corresponding path program 625 times [2020-01-16 18:05:29,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:29,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837889307] [2020-01-16 18:05:29,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:29,327 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837889307] [2020-01-16 18:05:29,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:29,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:29,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81974478] [2020-01-16 18:05:29,328 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:29,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:29,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:29,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:29,328 INFO L87 Difference]: Start difference. First operand 87 states and 220 transitions. Second operand 8 states. [2020-01-16 18:05:29,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:29,408 INFO L93 Difference]: Finished difference Result 153 states and 317 transitions. [2020-01-16 18:05:29,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:29,409 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:29,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:29,409 INFO L225 Difference]: With dead ends: 153 [2020-01-16 18:05:29,409 INFO L226 Difference]: Without dead ends: 139 [2020-01-16 18:05:29,409 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-01-16 18:05:29,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2020-01-16 18:05:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-01-16 18:05:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 223 transitions. [2020-01-16 18:05:29,412 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 223 transitions. Word has length 19 [2020-01-16 18:05:29,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:29,412 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 223 transitions. [2020-01-16 18:05:29,412 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:29,412 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 223 transitions. [2020-01-16 18:05:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:29,413 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:29,413 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:29,413 INFO L426 AbstractCegarLoop]: === Iteration 630 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:29,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2087725956, now seen corresponding path program 626 times [2020-01-16 18:05:29,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:29,413 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715601433] [2020-01-16 18:05:29,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:29,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715601433] [2020-01-16 18:05:29,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:29,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:29,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73058821] [2020-01-16 18:05:29,590 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:29,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:29,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:29,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:29,591 INFO L87 Difference]: Start difference. First operand 89 states and 223 transitions. Second operand 8 states. [2020-01-16 18:05:29,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:29,670 INFO L93 Difference]: Finished difference Result 149 states and 306 transitions. [2020-01-16 18:05:29,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:29,670 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:29,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:29,671 INFO L225 Difference]: With dead ends: 149 [2020-01-16 18:05:29,671 INFO L226 Difference]: Without dead ends: 137 [2020-01-16 18:05:29,671 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-01-16 18:05:29,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 87. [2020-01-16 18:05:29,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-01-16 18:05:29,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 219 transitions. [2020-01-16 18:05:29,673 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 219 transitions. Word has length 19 [2020-01-16 18:05:29,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:29,673 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 219 transitions. [2020-01-16 18:05:29,673 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:29,673 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 219 transitions. [2020-01-16 18:05:29,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:29,674 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:29,674 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:29,674 INFO L426 AbstractCegarLoop]: === Iteration 631 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:29,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:29,674 INFO L82 PathProgramCache]: Analyzing trace with hash -52368516, now seen corresponding path program 627 times [2020-01-16 18:05:29,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:29,674 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437180207] [2020-01-16 18:05:29,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:29,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437180207] [2020-01-16 18:05:29,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:29,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:29,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2411478] [2020-01-16 18:05:29,857 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:29,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:29,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:29,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:29,857 INFO L87 Difference]: Start difference. First operand 87 states and 219 transitions. Second operand 8 states. [2020-01-16 18:05:29,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:29,927 INFO L93 Difference]: Finished difference Result 153 states and 316 transitions. [2020-01-16 18:05:29,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:29,927 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:29,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:29,928 INFO L225 Difference]: With dead ends: 153 [2020-01-16 18:05:29,928 INFO L226 Difference]: Without dead ends: 139 [2020-01-16 18:05:29,928 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:29,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-01-16 18:05:29,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2020-01-16 18:05:29,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-01-16 18:05:29,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 222 transitions. [2020-01-16 18:05:29,930 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 222 transitions. Word has length 19 [2020-01-16 18:05:29,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:29,930 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 222 transitions. [2020-01-16 18:05:29,930 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:29,931 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 222 transitions. [2020-01-16 18:05:29,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:29,931 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:29,931 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:29,931 INFO L426 AbstractCegarLoop]: === Iteration 632 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:29,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1067761314, now seen corresponding path program 628 times [2020-01-16 18:05:29,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:29,932 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727746514] [2020-01-16 18:05:29,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:30,120 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727746514] [2020-01-16 18:05:30,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:30,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:30,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629450357] [2020-01-16 18:05:30,120 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:30,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:30,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:30,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:30,121 INFO L87 Difference]: Start difference. First operand 89 states and 222 transitions. Second operand 8 states. [2020-01-16 18:05:30,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:30,181 INFO L93 Difference]: Finished difference Result 149 states and 305 transitions. [2020-01-16 18:05:30,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:30,181 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:30,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:30,182 INFO L225 Difference]: With dead ends: 149 [2020-01-16 18:05:30,182 INFO L226 Difference]: Without dead ends: 137 [2020-01-16 18:05:30,182 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:30,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-01-16 18:05:30,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 87. [2020-01-16 18:05:30,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-01-16 18:05:30,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 218 transitions. [2020-01-16 18:05:30,184 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 218 transitions. Word has length 19 [2020-01-16 18:05:30,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:30,184 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 218 transitions. [2020-01-16 18:05:30,184 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:30,184 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 218 transitions. [2020-01-16 18:05:30,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:30,185 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:30,185 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:30,185 INFO L426 AbstractCegarLoop]: === Iteration 633 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:30,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:30,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1845259230, now seen corresponding path program 629 times [2020-01-16 18:05:30,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:30,185 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538353073] [2020-01-16 18:05:30,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:30,380 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538353073] [2020-01-16 18:05:30,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:30,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:30,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940351630] [2020-01-16 18:05:30,380 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:30,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:30,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:30,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:30,381 INFO L87 Difference]: Start difference. First operand 87 states and 218 transitions. Second operand 8 states. [2020-01-16 18:05:30,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:30,459 INFO L93 Difference]: Finished difference Result 144 states and 294 transitions. [2020-01-16 18:05:30,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:30,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:30,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:30,460 INFO L225 Difference]: With dead ends: 144 [2020-01-16 18:05:30,461 INFO L226 Difference]: Without dead ends: 134 [2020-01-16 18:05:30,461 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:30,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-01-16 18:05:30,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 88. [2020-01-16 18:05:30,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:05:30,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 219 transitions. [2020-01-16 18:05:30,463 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 219 transitions. Word has length 19 [2020-01-16 18:05:30,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:30,464 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 219 transitions. [2020-01-16 18:05:30,464 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 219 transitions. [2020-01-16 18:05:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:30,464 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:30,464 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:30,464 INFO L426 AbstractCegarLoop]: === Iteration 634 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:30,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:30,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1605616892, now seen corresponding path program 630 times [2020-01-16 18:05:30,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:30,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076006344] [2020-01-16 18:05:30,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:30,658 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076006344] [2020-01-16 18:05:30,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:30,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:30,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959866728] [2020-01-16 18:05:30,658 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:30,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:30,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:30,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:30,659 INFO L87 Difference]: Start difference. First operand 88 states and 219 transitions. Second operand 8 states. [2020-01-16 18:05:30,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:30,720 INFO L93 Difference]: Finished difference Result 144 states and 293 transitions. [2020-01-16 18:05:30,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:30,720 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:30,721 INFO L225 Difference]: With dead ends: 144 [2020-01-16 18:05:30,721 INFO L226 Difference]: Without dead ends: 132 [2020-01-16 18:05:30,721 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:30,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-01-16 18:05:30,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 86. [2020-01-16 18:05:30,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-01-16 18:05:30,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 216 transitions. [2020-01-16 18:05:30,723 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 216 transitions. Word has length 19 [2020-01-16 18:05:30,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:30,723 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 216 transitions. [2020-01-16 18:05:30,723 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:30,723 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 216 transitions. [2020-01-16 18:05:30,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:30,724 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:30,724 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:30,724 INFO L426 AbstractCegarLoop]: === Iteration 635 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:30,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:30,724 INFO L82 PathProgramCache]: Analyzing trace with hash -119299042, now seen corresponding path program 631 times [2020-01-16 18:05:30,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:30,724 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41195599] [2020-01-16 18:05:30,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:30,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:30,894 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41195599] [2020-01-16 18:05:30,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:30,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:30,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315625641] [2020-01-16 18:05:30,894 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:30,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:30,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:30,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:30,895 INFO L87 Difference]: Start difference. First operand 86 states and 216 transitions. Second operand 8 states. [2020-01-16 18:05:30,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:30,976 INFO L93 Difference]: Finished difference Result 159 states and 335 transitions. [2020-01-16 18:05:30,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:30,976 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:30,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:30,977 INFO L225 Difference]: With dead ends: 159 [2020-01-16 18:05:30,977 INFO L226 Difference]: Without dead ends: 145 [2020-01-16 18:05:30,977 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:30,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-01-16 18:05:30,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 90. [2020-01-16 18:05:30,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:05:30,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 226 transitions. [2020-01-16 18:05:30,980 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 226 transitions. Word has length 19 [2020-01-16 18:05:30,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:30,980 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 226 transitions. [2020-01-16 18:05:30,980 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:30,980 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 226 transitions. [2020-01-16 18:05:30,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:30,981 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:30,981 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:30,981 INFO L426 AbstractCegarLoop]: === Iteration 636 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:30,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:30,981 INFO L82 PathProgramCache]: Analyzing trace with hash -993634368, now seen corresponding path program 632 times [2020-01-16 18:05:30,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:30,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005704047] [2020-01-16 18:05:30,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:31,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005704047] [2020-01-16 18:05:31,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:31,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:31,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45491061] [2020-01-16 18:05:31,146 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:31,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:31,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:31,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:31,147 INFO L87 Difference]: Start difference. First operand 90 states and 226 transitions. Second operand 8 states. [2020-01-16 18:05:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:31,222 INFO L93 Difference]: Finished difference Result 155 states and 324 transitions. [2020-01-16 18:05:31,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:31,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:31,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:31,223 INFO L225 Difference]: With dead ends: 155 [2020-01-16 18:05:31,223 INFO L226 Difference]: Without dead ends: 143 [2020-01-16 18:05:31,223 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:31,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-01-16 18:05:31,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 88. [2020-01-16 18:05:31,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:05:31,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 221 transitions. [2020-01-16 18:05:31,226 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 221 transitions. Word has length 19 [2020-01-16 18:05:31,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:31,226 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 221 transitions. [2020-01-16 18:05:31,226 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:31,226 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 221 transitions. [2020-01-16 18:05:31,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:31,227 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:31,227 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:31,227 INFO L426 AbstractCegarLoop]: === Iteration 637 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:31,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:31,227 INFO L82 PathProgramCache]: Analyzing trace with hash -579720990, now seen corresponding path program 633 times [2020-01-16 18:05:31,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:31,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588021491] [2020-01-16 18:05:31,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:31,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588021491] [2020-01-16 18:05:31,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:31,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:31,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539949691] [2020-01-16 18:05:31,410 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:31,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:31,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:31,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:31,410 INFO L87 Difference]: Start difference. First operand 88 states and 221 transitions. Second operand 8 states. [2020-01-16 18:05:31,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:31,491 INFO L93 Difference]: Finished difference Result 159 states and 338 transitions. [2020-01-16 18:05:31,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:31,491 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:31,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:31,492 INFO L225 Difference]: With dead ends: 159 [2020-01-16 18:05:31,492 INFO L226 Difference]: Without dead ends: 145 [2020-01-16 18:05:31,492 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-01-16 18:05:31,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 93. [2020-01-16 18:05:31,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-01-16 18:05:31,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 231 transitions. [2020-01-16 18:05:31,495 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 231 transitions. Word has length 19 [2020-01-16 18:05:31,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:31,495 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 231 transitions. [2020-01-16 18:05:31,495 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:31,495 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 231 transitions. [2020-01-16 18:05:31,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:31,495 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:31,496 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:31,496 INFO L426 AbstractCegarLoop]: === Iteration 638 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:31,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:31,496 INFO L82 PathProgramCache]: Analyzing trace with hash 389163050, now seen corresponding path program 634 times [2020-01-16 18:05:31,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:31,496 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376596260] [2020-01-16 18:05:31,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:31,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376596260] [2020-01-16 18:05:31,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:31,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:31,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262537014] [2020-01-16 18:05:31,675 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:31,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:31,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:31,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:31,676 INFO L87 Difference]: Start difference. First operand 93 states and 231 transitions. Second operand 8 states. [2020-01-16 18:05:31,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:31,757 INFO L93 Difference]: Finished difference Result 149 states and 322 transitions. [2020-01-16 18:05:31,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:31,757 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:31,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:31,758 INFO L225 Difference]: With dead ends: 149 [2020-01-16 18:05:31,758 INFO L226 Difference]: Without dead ends: 131 [2020-01-16 18:05:31,758 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:31,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-01-16 18:05:31,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 88. [2020-01-16 18:05:31,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:05:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 219 transitions. [2020-01-16 18:05:31,760 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 219 transitions. Word has length 19 [2020-01-16 18:05:31,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:31,761 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 219 transitions. [2020-01-16 18:05:31,761 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 219 transitions. [2020-01-16 18:05:31,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:31,761 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:31,761 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:31,761 INFO L426 AbstractCegarLoop]: === Iteration 639 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:31,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:31,761 INFO L82 PathProgramCache]: Analyzing trace with hash 780051178, now seen corresponding path program 635 times [2020-01-16 18:05:31,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:31,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707711326] [2020-01-16 18:05:31,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:31,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:31,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707711326] [2020-01-16 18:05:31,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:31,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:31,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278937842] [2020-01-16 18:05:31,948 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:31,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:31,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:31,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:31,949 INFO L87 Difference]: Start difference. First operand 88 states and 219 transitions. Second operand 8 states. [2020-01-16 18:05:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:32,032 INFO L93 Difference]: Finished difference Result 152 states and 317 transitions. [2020-01-16 18:05:32,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:32,033 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:32,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:32,033 INFO L225 Difference]: With dead ends: 152 [2020-01-16 18:05:32,033 INFO L226 Difference]: Without dead ends: 142 [2020-01-16 18:05:32,034 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:32,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-01-16 18:05:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 90. [2020-01-16 18:05:32,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:05:32,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 222 transitions. [2020-01-16 18:05:32,036 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 222 transitions. Word has length 19 [2020-01-16 18:05:32,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:32,036 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 222 transitions. [2020-01-16 18:05:32,037 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:32,037 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 222 transitions. [2020-01-16 18:05:32,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:32,037 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:32,037 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:32,037 INFO L426 AbstractCegarLoop]: === Iteration 640 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:32,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:32,038 INFO L82 PathProgramCache]: Analyzing trace with hash -948996156, now seen corresponding path program 636 times [2020-01-16 18:05:32,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:32,038 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661311961] [2020-01-16 18:05:32,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:32,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661311961] [2020-01-16 18:05:32,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:32,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:32,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80834434] [2020-01-16 18:05:32,218 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:32,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:32,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:32,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:32,218 INFO L87 Difference]: Start difference. First operand 90 states and 222 transitions. Second operand 8 states. [2020-01-16 18:05:32,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:32,302 INFO L93 Difference]: Finished difference Result 146 states and 313 transitions. [2020-01-16 18:05:32,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:32,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:32,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:32,303 INFO L225 Difference]: With dead ends: 146 [2020-01-16 18:05:32,303 INFO L226 Difference]: Without dead ends: 129 [2020-01-16 18:05:32,303 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:32,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-01-16 18:05:32,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 86. [2020-01-16 18:05:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-01-16 18:05:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 215 transitions. [2020-01-16 18:05:32,306 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 215 transitions. Word has length 19 [2020-01-16 18:05:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:32,306 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 215 transitions. [2020-01-16 18:05:32,307 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:32,307 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 215 transitions. [2020-01-16 18:05:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:32,307 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:32,307 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:32,307 INFO L426 AbstractCegarLoop]: === Iteration 641 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:32,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:32,308 INFO L82 PathProgramCache]: Analyzing trace with hash -558714782, now seen corresponding path program 637 times [2020-01-16 18:05:32,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:32,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824322577] [2020-01-16 18:05:32,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:32,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824322577] [2020-01-16 18:05:32,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:32,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:32,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326393787] [2020-01-16 18:05:32,490 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:32,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:32,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:32,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:32,491 INFO L87 Difference]: Start difference. First operand 86 states and 215 transitions. Second operand 8 states. [2020-01-16 18:05:32,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:32,567 INFO L93 Difference]: Finished difference Result 159 states and 334 transitions. [2020-01-16 18:05:32,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:32,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:32,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:32,568 INFO L225 Difference]: With dead ends: 159 [2020-01-16 18:05:32,568 INFO L226 Difference]: Without dead ends: 145 [2020-01-16 18:05:32,569 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:32,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-01-16 18:05:32,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 90. [2020-01-16 18:05:32,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:05:32,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 225 transitions. [2020-01-16 18:05:32,571 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 225 transitions. Word has length 19 [2020-01-16 18:05:32,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:32,571 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 225 transitions. [2020-01-16 18:05:32,571 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:32,572 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 225 transitions. [2020-01-16 18:05:32,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:32,572 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:32,572 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:32,572 INFO L426 AbstractCegarLoop]: === Iteration 642 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:32,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:32,572 INFO L82 PathProgramCache]: Analyzing trace with hash 561415048, now seen corresponding path program 638 times [2020-01-16 18:05:32,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:32,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624071281] [2020-01-16 18:05:32,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:32,766 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624071281] [2020-01-16 18:05:32,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:32,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:32,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720512703] [2020-01-16 18:05:32,767 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:32,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:32,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:32,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:32,767 INFO L87 Difference]: Start difference. First operand 90 states and 225 transitions. Second operand 8 states. [2020-01-16 18:05:32,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:32,820 INFO L93 Difference]: Finished difference Result 155 states and 323 transitions. [2020-01-16 18:05:32,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:32,821 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:32,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:32,821 INFO L225 Difference]: With dead ends: 155 [2020-01-16 18:05:32,822 INFO L226 Difference]: Without dead ends: 143 [2020-01-16 18:05:32,822 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:32,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-01-16 18:05:32,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 88. [2020-01-16 18:05:32,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:05:32,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 220 transitions. [2020-01-16 18:05:32,824 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 220 transitions. Word has length 19 [2020-01-16 18:05:32,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:32,824 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 220 transitions. [2020-01-16 18:05:32,824 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:32,824 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 220 transitions. [2020-01-16 18:05:32,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:32,825 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:32,825 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:32,825 INFO L426 AbstractCegarLoop]: === Iteration 643 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:32,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:32,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1631800162, now seen corresponding path program 639 times [2020-01-16 18:05:32,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:32,825 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030407626] [2020-01-16 18:05:32,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:33,010 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030407626] [2020-01-16 18:05:33,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:33,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:33,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477165050] [2020-01-16 18:05:33,010 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:33,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:33,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:33,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:33,011 INFO L87 Difference]: Start difference. First operand 88 states and 220 transitions. Second operand 8 states. [2020-01-16 18:05:33,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:33,087 INFO L93 Difference]: Finished difference Result 159 states and 337 transitions. [2020-01-16 18:05:33,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:33,087 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:33,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:33,088 INFO L225 Difference]: With dead ends: 159 [2020-01-16 18:05:33,088 INFO L226 Difference]: Without dead ends: 145 [2020-01-16 18:05:33,088 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:33,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-01-16 18:05:33,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 93. [2020-01-16 18:05:33,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-01-16 18:05:33,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 230 transitions. [2020-01-16 18:05:33,090 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 230 transitions. Word has length 19 [2020-01-16 18:05:33,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:33,091 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 230 transitions. [2020-01-16 18:05:33,091 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:33,091 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 230 transitions. [2020-01-16 18:05:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:33,091 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:33,091 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:33,091 INFO L426 AbstractCegarLoop]: === Iteration 644 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:33,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:33,091 INFO L82 PathProgramCache]: Analyzing trace with hash 2021110216, now seen corresponding path program 640 times [2020-01-16 18:05:33,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:33,091 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601549772] [2020-01-16 18:05:33,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:33,279 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601549772] [2020-01-16 18:05:33,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:33,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:33,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361490634] [2020-01-16 18:05:33,280 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:33,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:33,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:33,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:33,280 INFO L87 Difference]: Start difference. First operand 93 states and 230 transitions. Second operand 8 states. [2020-01-16 18:05:33,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:33,360 INFO L93 Difference]: Finished difference Result 149 states and 321 transitions. [2020-01-16 18:05:33,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:33,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:33,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:33,361 INFO L225 Difference]: With dead ends: 149 [2020-01-16 18:05:33,361 INFO L226 Difference]: Without dead ends: 131 [2020-01-16 18:05:33,361 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:33,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-01-16 18:05:33,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 88. [2020-01-16 18:05:33,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:05:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 218 transitions. [2020-01-16 18:05:33,364 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 218 transitions. Word has length 19 [2020-01-16 18:05:33,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:33,364 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 218 transitions. [2020-01-16 18:05:33,364 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:33,364 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 218 transitions. [2020-01-16 18:05:33,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:33,364 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:33,364 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:33,364 INFO L426 AbstractCegarLoop]: === Iteration 645 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:33,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:33,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1637126204, now seen corresponding path program 641 times [2020-01-16 18:05:33,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:33,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276949750] [2020-01-16 18:05:33,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:33,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:33,558 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276949750] [2020-01-16 18:05:33,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:33,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:33,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59283705] [2020-01-16 18:05:33,559 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:33,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:33,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:33,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:33,559 INFO L87 Difference]: Start difference. First operand 88 states and 218 transitions. Second operand 8 states. [2020-01-16 18:05:33,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:33,622 INFO L93 Difference]: Finished difference Result 152 states and 316 transitions. [2020-01-16 18:05:33,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:33,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:33,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:33,623 INFO L225 Difference]: With dead ends: 152 [2020-01-16 18:05:33,623 INFO L226 Difference]: Without dead ends: 142 [2020-01-16 18:05:33,624 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:33,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-01-16 18:05:33,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 90. [2020-01-16 18:05:33,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:05:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 221 transitions. [2020-01-16 18:05:33,626 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 221 transitions. Word has length 19 [2020-01-16 18:05:33,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:33,626 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 221 transitions. [2020-01-16 18:05:33,626 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:33,627 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 221 transitions. [2020-01-16 18:05:33,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:33,627 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:33,627 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:33,627 INFO L426 AbstractCegarLoop]: === Iteration 646 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:33,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:33,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1168436096, now seen corresponding path program 642 times [2020-01-16 18:05:33,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:33,627 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476512113] [2020-01-16 18:05:33,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:33,812 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476512113] [2020-01-16 18:05:33,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:33,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:33,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148262929] [2020-01-16 18:05:33,813 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:33,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:33,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:33,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:33,813 INFO L87 Difference]: Start difference. First operand 90 states and 221 transitions. Second operand 8 states. [2020-01-16 18:05:33,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:33,892 INFO L93 Difference]: Finished difference Result 146 states and 312 transitions. [2020-01-16 18:05:33,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:33,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:33,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:33,893 INFO L225 Difference]: With dead ends: 146 [2020-01-16 18:05:33,893 INFO L226 Difference]: Without dead ends: 129 [2020-01-16 18:05:33,894 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:33,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-01-16 18:05:33,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 86. [2020-01-16 18:05:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-01-16 18:05:33,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 214 transitions. [2020-01-16 18:05:33,896 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 214 transitions. Word has length 19 [2020-01-16 18:05:33,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:33,896 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 214 transitions. [2020-01-16 18:05:33,896 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:33,896 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 214 transitions. [2020-01-16 18:05:33,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:33,897 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:33,897 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:33,897 INFO L426 AbstractCegarLoop]: === Iteration 647 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:33,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:33,897 INFO L82 PathProgramCache]: Analyzing trace with hash 832566698, now seen corresponding path program 643 times [2020-01-16 18:05:33,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:33,897 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732715511] [2020-01-16 18:05:33,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:34,090 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732715511] [2020-01-16 18:05:34,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:34,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:34,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092514394] [2020-01-16 18:05:34,091 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:34,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:34,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:34,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:34,091 INFO L87 Difference]: Start difference. First operand 86 states and 214 transitions. Second operand 8 states. [2020-01-16 18:05:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:34,166 INFO L93 Difference]: Finished difference Result 142 states and 289 transitions. [2020-01-16 18:05:34,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:34,166 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:34,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:34,167 INFO L225 Difference]: With dead ends: 142 [2020-01-16 18:05:34,167 INFO L226 Difference]: Without dead ends: 132 [2020-01-16 18:05:34,167 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-01-16 18:05:34,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 88. [2020-01-16 18:05:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:05:34,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 218 transitions. [2020-01-16 18:05:34,169 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 218 transitions. Word has length 19 [2020-01-16 18:05:34,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:34,169 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 218 transitions. [2020-01-16 18:05:34,170 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:34,170 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 218 transitions. [2020-01-16 18:05:34,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:34,170 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:34,170 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:34,170 INFO L426 AbstractCegarLoop]: === Iteration 648 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:34,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:34,170 INFO L82 PathProgramCache]: Analyzing trace with hash 592924360, now seen corresponding path program 644 times [2020-01-16 18:05:34,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:34,170 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797259217] [2020-01-16 18:05:34,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:34,372 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797259217] [2020-01-16 18:05:34,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:34,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:34,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369182293] [2020-01-16 18:05:34,372 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:34,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:34,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:34,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:34,373 INFO L87 Difference]: Start difference. First operand 88 states and 218 transitions. Second operand 8 states. [2020-01-16 18:05:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:34,420 INFO L93 Difference]: Finished difference Result 142 states and 288 transitions. [2020-01-16 18:05:34,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:34,421 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:34,421 INFO L225 Difference]: With dead ends: 142 [2020-01-16 18:05:34,421 INFO L226 Difference]: Without dead ends: 131 [2020-01-16 18:05:34,422 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:34,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-01-16 18:05:34,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 87. [2020-01-16 18:05:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-01-16 18:05:34,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 216 transitions. [2020-01-16 18:05:34,424 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 216 transitions. Word has length 19 [2020-01-16 18:05:34,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:34,424 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 216 transitions. [2020-01-16 18:05:34,425 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:34,425 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 216 transitions. [2020-01-16 18:05:34,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:34,425 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:34,425 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:34,425 INFO L426 AbstractCegarLoop]: === Iteration 649 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:34,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:34,426 INFO L82 PathProgramCache]: Analyzing trace with hash -240518682, now seen corresponding path program 645 times [2020-01-16 18:05:34,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:34,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721090756] [2020-01-16 18:05:34,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:34,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721090756] [2020-01-16 18:05:34,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:34,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:34,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039362689] [2020-01-16 18:05:34,609 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:34,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:34,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:34,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:34,609 INFO L87 Difference]: Start difference. First operand 87 states and 216 transitions. Second operand 8 states. [2020-01-16 18:05:34,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:34,673 INFO L93 Difference]: Finished difference Result 144 states and 295 transitions. [2020-01-16 18:05:34,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:34,673 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:34,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:34,674 INFO L225 Difference]: With dead ends: 144 [2020-01-16 18:05:34,674 INFO L226 Difference]: Without dead ends: 134 [2020-01-16 18:05:34,674 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:34,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-01-16 18:05:34,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 89. [2020-01-16 18:05:34,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-01-16 18:05:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 219 transitions. [2020-01-16 18:05:34,676 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 219 transitions. Word has length 19 [2020-01-16 18:05:34,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:34,677 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 219 transitions. [2020-01-16 18:05:34,677 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 219 transitions. [2020-01-16 18:05:34,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:34,677 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:34,677 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:34,677 INFO L426 AbstractCegarLoop]: === Iteration 650 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:34,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:34,677 INFO L82 PathProgramCache]: Analyzing trace with hash 714460322, now seen corresponding path program 646 times [2020-01-16 18:05:34,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:34,678 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527417983] [2020-01-16 18:05:34,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:34,869 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527417983] [2020-01-16 18:05:34,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:34,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:34,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058526745] [2020-01-16 18:05:34,870 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:34,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:34,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:34,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:34,870 INFO L87 Difference]: Start difference. First operand 89 states and 219 transitions. Second operand 8 states. [2020-01-16 18:05:34,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:34,939 INFO L93 Difference]: Finished difference Result 138 states and 291 transitions. [2020-01-16 18:05:34,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:34,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:34,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:34,940 INFO L225 Difference]: With dead ends: 138 [2020-01-16 18:05:34,940 INFO L226 Difference]: Without dead ends: 123 [2020-01-16 18:05:34,940 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:34,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-01-16 18:05:34,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 87. [2020-01-16 18:05:34,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-01-16 18:05:34,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 215 transitions. [2020-01-16 18:05:34,943 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 215 transitions. Word has length 19 [2020-01-16 18:05:34,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:34,943 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 215 transitions. [2020-01-16 18:05:34,943 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:34,943 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 215 transitions. [2020-01-16 18:05:34,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:34,943 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:34,943 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:34,943 INFO L426 AbstractCegarLoop]: === Iteration 651 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:34,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:34,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1130779938, now seen corresponding path program 647 times [2020-01-16 18:05:34,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:34,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307832293] [2020-01-16 18:05:34,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:35,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:35,144 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307832293] [2020-01-16 18:05:35,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:35,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:35,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040077467] [2020-01-16 18:05:35,145 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:35,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:35,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:35,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:35,145 INFO L87 Difference]: Start difference. First operand 87 states and 215 transitions. Second operand 8 states. [2020-01-16 18:05:35,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:35,190 INFO L93 Difference]: Finished difference Result 144 states and 294 transitions. [2020-01-16 18:05:35,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:35,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:35,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:35,191 INFO L225 Difference]: With dead ends: 144 [2020-01-16 18:05:35,191 INFO L226 Difference]: Without dead ends: 134 [2020-01-16 18:05:35,191 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:35,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-01-16 18:05:35,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 89. [2020-01-16 18:05:35,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-01-16 18:05:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 218 transitions. [2020-01-16 18:05:35,194 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 218 transitions. Word has length 19 [2020-01-16 18:05:35,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:35,194 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 218 transitions. [2020-01-16 18:05:35,194 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:35,194 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 218 transitions. [2020-01-16 18:05:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:35,195 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:35,195 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:35,195 INFO L426 AbstractCegarLoop]: === Iteration 652 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:35,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:35,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1674782362, now seen corresponding path program 648 times [2020-01-16 18:05:35,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:35,196 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132684953] [2020-01-16 18:05:35,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:35,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:35,381 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132684953] [2020-01-16 18:05:35,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:35,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:35,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286923873] [2020-01-16 18:05:35,381 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:35,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:35,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:35,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:35,382 INFO L87 Difference]: Start difference. First operand 89 states and 218 transitions. Second operand 8 states. [2020-01-16 18:05:35,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:35,447 INFO L93 Difference]: Finished difference Result 138 states and 290 transitions. [2020-01-16 18:05:35,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:35,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:35,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:35,448 INFO L225 Difference]: With dead ends: 138 [2020-01-16 18:05:35,448 INFO L226 Difference]: Without dead ends: 121 [2020-01-16 18:05:35,448 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:35,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-01-16 18:05:35,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 85. [2020-01-16 18:05:35,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-01-16 18:05:35,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 212 transitions. [2020-01-16 18:05:35,451 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 212 transitions. Word has length 19 [2020-01-16 18:05:35,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:35,451 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 212 transitions. [2020-01-16 18:05:35,451 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:35,451 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 212 transitions. [2020-01-16 18:05:35,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:35,452 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:35,452 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:35,452 INFO L426 AbstractCegarLoop]: === Iteration 653 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:35,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:35,452 INFO L82 PathProgramCache]: Analyzing trace with hash -898297510, now seen corresponding path program 649 times [2020-01-16 18:05:35,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:35,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509483852] [2020-01-16 18:05:35,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:35,628 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509483852] [2020-01-16 18:05:35,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:35,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:35,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426669575] [2020-01-16 18:05:35,629 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:35,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:35,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:35,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:35,629 INFO L87 Difference]: Start difference. First operand 85 states and 212 transitions. Second operand 8 states. [2020-01-16 18:05:35,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:35,695 INFO L93 Difference]: Finished difference Result 154 states and 319 transitions. [2020-01-16 18:05:35,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:35,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:35,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:35,696 INFO L225 Difference]: With dead ends: 154 [2020-01-16 18:05:35,696 INFO L226 Difference]: Without dead ends: 140 [2020-01-16 18:05:35,696 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:35,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-01-16 18:05:35,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 87. [2020-01-16 18:05:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-01-16 18:05:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 215 transitions. [2020-01-16 18:05:35,702 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 215 transitions. Word has length 19 [2020-01-16 18:05:35,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:35,702 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 215 transitions. [2020-01-16 18:05:35,702 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:35,702 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 215 transitions. [2020-01-16 18:05:35,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:35,702 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:35,702 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:35,702 INFO L426 AbstractCegarLoop]: === Iteration 654 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:35,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:35,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1772632836, now seen corresponding path program 650 times [2020-01-16 18:05:35,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:35,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053044998] [2020-01-16 18:05:35,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:35,872 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053044998] [2020-01-16 18:05:35,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:35,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:35,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479607672] [2020-01-16 18:05:35,872 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:35,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:35,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:35,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:35,873 INFO L87 Difference]: Start difference. First operand 87 states and 215 transitions. Second operand 8 states. [2020-01-16 18:05:35,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:35,942 INFO L93 Difference]: Finished difference Result 150 states and 308 transitions. [2020-01-16 18:05:35,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:35,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:35,943 INFO L225 Difference]: With dead ends: 150 [2020-01-16 18:05:35,943 INFO L226 Difference]: Without dead ends: 138 [2020-01-16 18:05:35,943 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:35,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-01-16 18:05:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-01-16 18:05:35,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-01-16 18:05:35,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 210 transitions. [2020-01-16 18:05:35,946 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 210 transitions. Word has length 19 [2020-01-16 18:05:35,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:35,946 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 210 transitions. [2020-01-16 18:05:35,946 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:35,946 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 210 transitions. [2020-01-16 18:05:35,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:35,946 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:35,946 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:35,946 INFO L426 AbstractCegarLoop]: === Iteration 655 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:35,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:35,946 INFO L82 PathProgramCache]: Analyzing trace with hash 591107486, now seen corresponding path program 651 times [2020-01-16 18:05:35,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:35,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685663228] [2020-01-16 18:05:35,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:36,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:36,126 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685663228] [2020-01-16 18:05:36,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:36,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:36,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189697701] [2020-01-16 18:05:36,127 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:36,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:36,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:36,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:36,127 INFO L87 Difference]: Start difference. First operand 85 states and 210 transitions. Second operand 8 states. [2020-01-16 18:05:36,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:36,195 INFO L93 Difference]: Finished difference Result 158 states and 329 transitions. [2020-01-16 18:05:36,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:36,195 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:36,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:36,196 INFO L225 Difference]: With dead ends: 158 [2020-01-16 18:05:36,196 INFO L226 Difference]: Without dead ends: 144 [2020-01-16 18:05:36,196 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:36,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-01-16 18:05:36,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 89. [2020-01-16 18:05:36,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-01-16 18:05:36,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 218 transitions. [2020-01-16 18:05:36,199 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 218 transitions. Word has length 19 [2020-01-16 18:05:36,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:36,199 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 218 transitions. [2020-01-16 18:05:36,199 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:36,200 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 218 transitions. [2020-01-16 18:05:36,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:36,200 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:36,200 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:36,200 INFO L426 AbstractCegarLoop]: === Iteration 656 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:36,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:36,201 INFO L82 PathProgramCache]: Analyzing trace with hash -154189658, now seen corresponding path program 652 times [2020-01-16 18:05:36,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:36,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470327655] [2020-01-16 18:05:36,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:36,381 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470327655] [2020-01-16 18:05:36,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:36,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:36,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388008683] [2020-01-16 18:05:36,382 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:36,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:36,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:36,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:36,383 INFO L87 Difference]: Start difference. First operand 89 states and 218 transitions. Second operand 8 states. [2020-01-16 18:05:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:36,449 INFO L93 Difference]: Finished difference Result 156 states and 321 transitions. [2020-01-16 18:05:36,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:36,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:36,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:36,450 INFO L225 Difference]: With dead ends: 156 [2020-01-16 18:05:36,450 INFO L226 Difference]: Without dead ends: 140 [2020-01-16 18:05:36,450 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-01-16 18:05:36,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 85. [2020-01-16 18:05:36,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-01-16 18:05:36,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 208 transitions. [2020-01-16 18:05:36,453 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 208 transitions. Word has length 19 [2020-01-16 18:05:36,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:36,453 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 208 transitions. [2020-01-16 18:05:36,453 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:36,453 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 208 transitions. [2020-01-16 18:05:36,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:36,453 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:36,453 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:36,453 INFO L426 AbstractCegarLoop]: === Iteration 657 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:36,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:36,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1950879654, now seen corresponding path program 653 times [2020-01-16 18:05:36,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:36,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181688758] [2020-01-16 18:05:36,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:36,631 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181688758] [2020-01-16 18:05:36,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:36,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:36,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425838694] [2020-01-16 18:05:36,631 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:36,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:36,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:36,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:36,632 INFO L87 Difference]: Start difference. First operand 85 states and 208 transitions. Second operand 8 states. [2020-01-16 18:05:36,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:36,694 INFO L93 Difference]: Finished difference Result 148 states and 302 transitions. [2020-01-16 18:05:36,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:36,694 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:36,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:36,695 INFO L225 Difference]: With dead ends: 148 [2020-01-16 18:05:36,695 INFO L226 Difference]: Without dead ends: 138 [2020-01-16 18:05:36,695 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:36,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-01-16 18:05:36,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 87. [2020-01-16 18:05:36,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-01-16 18:05:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 211 transitions. [2020-01-16 18:05:36,698 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 211 transitions. Word has length 19 [2020-01-16 18:05:36,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:36,698 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 211 transitions. [2020-01-16 18:05:36,698 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:36,698 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 211 transitions. [2020-01-16 18:05:36,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:36,698 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:36,698 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:36,698 INFO L426 AbstractCegarLoop]: === Iteration 658 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:36,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:36,699 INFO L82 PathProgramCache]: Analyzing trace with hash -633474334, now seen corresponding path program 654 times [2020-01-16 18:05:36,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:36,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773554600] [2020-01-16 18:05:36,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:36,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773554600] [2020-01-16 18:05:36,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:36,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:36,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082212329] [2020-01-16 18:05:36,878 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:36,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:36,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:36,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:36,879 INFO L87 Difference]: Start difference. First operand 87 states and 211 transitions. Second operand 8 states. [2020-01-16 18:05:36,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:36,944 INFO L93 Difference]: Finished difference Result 150 states and 305 transitions. [2020-01-16 18:05:36,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:36,944 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:36,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:36,945 INFO L225 Difference]: With dead ends: 150 [2020-01-16 18:05:36,945 INFO L226 Difference]: Without dead ends: 134 [2020-01-16 18:05:36,945 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:36,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-01-16 18:05:36,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 83. [2020-01-16 18:05:36,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-01-16 18:05:36,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 203 transitions. [2020-01-16 18:05:36,947 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 203 transitions. Word has length 19 [2020-01-16 18:05:36,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:36,948 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 203 transitions. [2020-01-16 18:05:36,948 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 203 transitions. [2020-01-16 18:05:36,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:36,948 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:36,948 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:36,948 INFO L426 AbstractCegarLoop]: === Iteration 659 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:36,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:36,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1213390630, now seen corresponding path program 655 times [2020-01-16 18:05:36,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:36,948 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66273927] [2020-01-16 18:05:36,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:37,118 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66273927] [2020-01-16 18:05:37,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:37,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:37,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887859586] [2020-01-16 18:05:37,119 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:37,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:37,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:37,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:37,119 INFO L87 Difference]: Start difference. First operand 83 states and 203 transitions. Second operand 8 states. [2020-01-16 18:05:37,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:37,189 INFO L93 Difference]: Finished difference Result 152 states and 310 transitions. [2020-01-16 18:05:37,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:37,189 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:37,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:37,189 INFO L225 Difference]: With dead ends: 152 [2020-01-16 18:05:37,189 INFO L226 Difference]: Without dead ends: 138 [2020-01-16 18:05:37,190 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:37,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-01-16 18:05:37,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 83. [2020-01-16 18:05:37,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-01-16 18:05:37,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 201 transitions. [2020-01-16 18:05:37,192 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 201 transitions. Word has length 19 [2020-01-16 18:05:37,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:37,192 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 201 transitions. [2020-01-16 18:05:37,192 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:37,192 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 201 transitions. [2020-01-16 18:05:37,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:37,193 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:37,193 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:37,193 INFO L426 AbstractCegarLoop]: === Iteration 660 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:37,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:37,193 INFO L82 PathProgramCache]: Analyzing trace with hash -2087725956, now seen corresponding path program 656 times [2020-01-16 18:05:37,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:37,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464078722] [2020-01-16 18:05:37,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:37,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:37,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464078722] [2020-01-16 18:05:37,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:37,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:37,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198126210] [2020-01-16 18:05:37,369 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:37,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:37,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:37,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:37,370 INFO L87 Difference]: Start difference. First operand 83 states and 201 transitions. Second operand 8 states. [2020-01-16 18:05:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:37,443 INFO L93 Difference]: Finished difference Result 148 states and 299 transitions. [2020-01-16 18:05:37,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:37,443 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:37,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:37,444 INFO L225 Difference]: With dead ends: 148 [2020-01-16 18:05:37,444 INFO L226 Difference]: Without dead ends: 136 [2020-01-16 18:05:37,444 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:37,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-01-16 18:05:37,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 81. [2020-01-16 18:05:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-01-16 18:05:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 196 transitions. [2020-01-16 18:05:37,446 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 196 transitions. Word has length 19 [2020-01-16 18:05:37,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:37,446 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 196 transitions. [2020-01-16 18:05:37,446 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:37,446 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 196 transitions. [2020-01-16 18:05:37,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:37,447 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:37,447 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:37,447 INFO L426 AbstractCegarLoop]: === Iteration 661 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:37,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:37,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1020716864, now seen corresponding path program 657 times [2020-01-16 18:05:37,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:37,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984950676] [2020-01-16 18:05:37,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:37,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984950676] [2020-01-16 18:05:37,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:37,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:37,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849071577] [2020-01-16 18:05:37,634 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:37,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:37,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:37,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:37,634 INFO L87 Difference]: Start difference. First operand 81 states and 196 transitions. Second operand 8 states. [2020-01-16 18:05:37,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:37,702 INFO L93 Difference]: Finished difference Result 152 states and 313 transitions. [2020-01-16 18:05:37,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:37,702 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:37,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:37,703 INFO L225 Difference]: With dead ends: 152 [2020-01-16 18:05:37,703 INFO L226 Difference]: Without dead ends: 138 [2020-01-16 18:05:37,703 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:37,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-01-16 18:05:37,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 86. [2020-01-16 18:05:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-01-16 18:05:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 206 transitions. [2020-01-16 18:05:37,705 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 206 transitions. Word has length 19 [2020-01-16 18:05:37,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:37,705 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 206 transitions. [2020-01-16 18:05:37,705 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 206 transitions. [2020-01-16 18:05:37,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:37,706 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:37,706 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:37,706 INFO L426 AbstractCegarLoop]: === Iteration 662 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:37,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:37,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1989600904, now seen corresponding path program 658 times [2020-01-16 18:05:37,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:37,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064717393] [2020-01-16 18:05:37,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:37,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064717393] [2020-01-16 18:05:37,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:37,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:37,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456209508] [2020-01-16 18:05:37,879 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:37,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:37,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:37,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:37,880 INFO L87 Difference]: Start difference. First operand 86 states and 206 transitions. Second operand 8 states. [2020-01-16 18:05:37,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:37,949 INFO L93 Difference]: Finished difference Result 142 states and 297 transitions. [2020-01-16 18:05:37,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:37,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:37,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:37,950 INFO L225 Difference]: With dead ends: 142 [2020-01-16 18:05:37,950 INFO L226 Difference]: Without dead ends: 124 [2020-01-16 18:05:37,951 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:37,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-01-16 18:05:37,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 81. [2020-01-16 18:05:37,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-01-16 18:05:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 194 transitions. [2020-01-16 18:05:37,953 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 194 transitions. Word has length 19 [2020-01-16 18:05:37,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:37,953 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 194 transitions. [2020-01-16 18:05:37,953 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:37,953 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 194 transitions. [2020-01-16 18:05:37,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:37,953 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:37,954 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:37,954 INFO L426 AbstractCegarLoop]: === Iteration 663 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:37,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:37,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1914478264, now seen corresponding path program 659 times [2020-01-16 18:05:37,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:37,954 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928240265] [2020-01-16 18:05:37,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:38,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:38,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928240265] [2020-01-16 18:05:38,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:38,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:38,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459494726] [2020-01-16 18:05:38,132 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:38,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:38,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:38,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:38,132 INFO L87 Difference]: Start difference. First operand 81 states and 194 transitions. Second operand 8 states. [2020-01-16 18:05:38,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:38,199 INFO L93 Difference]: Finished difference Result 145 states and 292 transitions. [2020-01-16 18:05:38,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:38,199 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:38,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:38,200 INFO L225 Difference]: With dead ends: 145 [2020-01-16 18:05:38,200 INFO L226 Difference]: Without dead ends: 135 [2020-01-16 18:05:38,200 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:38,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-01-16 18:05:38,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 83. [2020-01-16 18:05:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-01-16 18:05:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 197 transitions. [2020-01-16 18:05:38,202 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 197 transitions. Word has length 19 [2020-01-16 18:05:38,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:38,203 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 197 transitions. [2020-01-16 18:05:38,203 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 197 transitions. [2020-01-16 18:05:38,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:38,203 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:38,203 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:38,203 INFO L426 AbstractCegarLoop]: === Iteration 664 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:38,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:38,204 INFO L82 PathProgramCache]: Analyzing trace with hash 651441698, now seen corresponding path program 660 times [2020-01-16 18:05:38,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:38,204 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146819859] [2020-01-16 18:05:38,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:38,376 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146819859] [2020-01-16 18:05:38,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:38,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:38,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203827944] [2020-01-16 18:05:38,377 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:38,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:38,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:38,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:38,377 INFO L87 Difference]: Start difference. First operand 83 states and 197 transitions. Second operand 8 states. [2020-01-16 18:05:38,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:38,442 INFO L93 Difference]: Finished difference Result 139 states and 288 transitions. [2020-01-16 18:05:38,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:38,443 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:38,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:38,443 INFO L225 Difference]: With dead ends: 139 [2020-01-16 18:05:38,443 INFO L226 Difference]: Without dead ends: 122 [2020-01-16 18:05:38,444 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:38,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-01-16 18:05:38,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 79. [2020-01-16 18:05:38,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-01-16 18:05:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 189 transitions. [2020-01-16 18:05:38,446 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 189 transitions. Word has length 19 [2020-01-16 18:05:38,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:38,446 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 189 transitions. [2020-01-16 18:05:38,446 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:38,446 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 189 transitions. [2020-01-16 18:05:38,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:38,446 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:38,447 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:38,447 INFO L426 AbstractCegarLoop]: === Iteration 665 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:38,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:38,447 INFO L82 PathProgramCache]: Analyzing trace with hash -797071014, now seen corresponding path program 661 times [2020-01-16 18:05:38,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:38,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840696943] [2020-01-16 18:05:38,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:38,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840696943] [2020-01-16 18:05:38,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:38,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:38,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964900326] [2020-01-16 18:05:38,639 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:38,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:38,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:38,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:38,639 INFO L87 Difference]: Start difference. First operand 79 states and 189 transitions. Second operand 8 states. [2020-01-16 18:05:38,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:38,705 INFO L93 Difference]: Finished difference Result 156 states and 329 transitions. [2020-01-16 18:05:38,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:38,706 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:38,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:38,706 INFO L225 Difference]: With dead ends: 156 [2020-01-16 18:05:38,707 INFO L226 Difference]: Without dead ends: 142 [2020-01-16 18:05:38,707 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:38,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-01-16 18:05:38,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 87. [2020-01-16 18:05:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-01-16 18:05:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 213 transitions. [2020-01-16 18:05:38,709 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 213 transitions. Word has length 19 [2020-01-16 18:05:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:38,709 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 213 transitions. [2020-01-16 18:05:38,710 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:38,710 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 213 transitions. [2020-01-16 18:05:38,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:38,710 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:38,710 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:38,710 INFO L426 AbstractCegarLoop]: === Iteration 666 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:38,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:38,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1542368158, now seen corresponding path program 662 times [2020-01-16 18:05:38,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:38,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778761798] [2020-01-16 18:05:38,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:38,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778761798] [2020-01-16 18:05:38,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:38,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:38,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33344824] [2020-01-16 18:05:38,900 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:38,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:38,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:38,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:38,901 INFO L87 Difference]: Start difference. First operand 87 states and 213 transitions. Second operand 8 states. [2020-01-16 18:05:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:38,969 INFO L93 Difference]: Finished difference Result 154 states and 321 transitions. [2020-01-16 18:05:38,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:38,969 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:38,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:38,969 INFO L225 Difference]: With dead ends: 154 [2020-01-16 18:05:38,970 INFO L226 Difference]: Without dead ends: 138 [2020-01-16 18:05:38,970 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:38,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-01-16 18:05:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 83. [2020-01-16 18:05:38,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-01-16 18:05:38,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 201 transitions. [2020-01-16 18:05:38,972 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 201 transitions. Word has length 19 [2020-01-16 18:05:38,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:38,972 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 201 transitions. [2020-01-16 18:05:38,973 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:38,973 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 201 transitions. [2020-01-16 18:05:38,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:38,973 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:38,973 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:38,973 INFO L426 AbstractCegarLoop]: === Iteration 667 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:38,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:38,973 INFO L82 PathProgramCache]: Analyzing trace with hash -52368516, now seen corresponding path program 663 times [2020-01-16 18:05:38,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:38,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871734047] [2020-01-16 18:05:38,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:39,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:39,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871734047] [2020-01-16 18:05:39,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:39,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:39,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462090376] [2020-01-16 18:05:39,164 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:39,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:39,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:39,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:39,165 INFO L87 Difference]: Start difference. First operand 83 states and 201 transitions. Second operand 8 states. [2020-01-16 18:05:39,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:39,228 INFO L93 Difference]: Finished difference Result 147 states and 303 transitions. [2020-01-16 18:05:39,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:39,228 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:39,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:39,229 INFO L225 Difference]: With dead ends: 147 [2020-01-16 18:05:39,229 INFO L226 Difference]: Without dead ends: 133 [2020-01-16 18:05:39,229 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:39,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-01-16 18:05:39,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 88. [2020-01-16 18:05:39,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:05:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 211 transitions. [2020-01-16 18:05:39,231 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 211 transitions. Word has length 19 [2020-01-16 18:05:39,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:39,231 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 211 transitions. [2020-01-16 18:05:39,231 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:39,232 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 211 transitions. [2020-01-16 18:05:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:39,232 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:39,232 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:39,232 INFO L426 AbstractCegarLoop]: === Iteration 668 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:39,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:39,232 INFO L82 PathProgramCache]: Analyzing trace with hash 916515524, now seen corresponding path program 664 times [2020-01-16 18:05:39,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:39,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111881596] [2020-01-16 18:05:39,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:39,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111881596] [2020-01-16 18:05:39,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:39,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:39,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929713176] [2020-01-16 18:05:39,421 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:39,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:39,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:39,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:39,421 INFO L87 Difference]: Start difference. First operand 88 states and 211 transitions. Second operand 8 states. [2020-01-16 18:05:39,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:39,491 INFO L93 Difference]: Finished difference Result 137 states and 287 transitions. [2020-01-16 18:05:39,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:39,492 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:39,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:39,492 INFO L225 Difference]: With dead ends: 137 [2020-01-16 18:05:39,492 INFO L226 Difference]: Without dead ends: 119 [2020-01-16 18:05:39,492 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:39,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-01-16 18:05:39,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 83. [2020-01-16 18:05:39,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-01-16 18:05:39,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 197 transitions. [2020-01-16 18:05:39,495 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 197 transitions. Word has length 19 [2020-01-16 18:05:39,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:39,495 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 197 transitions. [2020-01-16 18:05:39,495 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:39,495 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 197 transitions. [2020-01-16 18:05:39,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:39,495 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:39,495 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:39,495 INFO L426 AbstractCegarLoop]: === Iteration 669 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:39,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:39,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1571733990, now seen corresponding path program 665 times [2020-01-16 18:05:39,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:39,496 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275154240] [2020-01-16 18:05:39,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:39,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275154240] [2020-01-16 18:05:39,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:39,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:39,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196819179] [2020-01-16 18:05:39,687 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:39,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:39,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:39,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:39,687 INFO L87 Difference]: Start difference. First operand 83 states and 197 transitions. Second operand 8 states. [2020-01-16 18:05:39,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:39,754 INFO L93 Difference]: Finished difference Result 135 states and 283 transitions. [2020-01-16 18:05:39,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:39,754 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:39,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:39,755 INFO L225 Difference]: With dead ends: 135 [2020-01-16 18:05:39,755 INFO L226 Difference]: Without dead ends: 123 [2020-01-16 18:05:39,755 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:39,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-01-16 18:05:39,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 87. [2020-01-16 18:05:39,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-01-16 18:05:39,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 205 transitions. [2020-01-16 18:05:39,758 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 205 transitions. Word has length 19 [2020-01-16 18:05:39,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:39,758 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 205 transitions. [2020-01-16 18:05:39,758 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:39,758 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 205 transitions. [2020-01-16 18:05:39,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:39,758 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:39,758 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:39,758 INFO L426 AbstractCegarLoop]: === Iteration 670 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:39,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:39,758 INFO L82 PathProgramCache]: Analyzing trace with hash -712859460, now seen corresponding path program 666 times [2020-01-16 18:05:39,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:39,759 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177169835] [2020-01-16 18:05:39,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:39,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:39,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177169835] [2020-01-16 18:05:39,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:39,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:39,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849724516] [2020-01-16 18:05:39,951 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:39,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:39,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:39,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:39,952 INFO L87 Difference]: Start difference. First operand 87 states and 205 transitions. Second operand 8 states. [2020-01-16 18:05:40,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:40,016 INFO L93 Difference]: Finished difference Result 122 states and 262 transitions. [2020-01-16 18:05:40,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:40,016 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:40,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:40,017 INFO L225 Difference]: With dead ends: 122 [2020-01-16 18:05:40,017 INFO L226 Difference]: Without dead ends: 101 [2020-01-16 18:05:40,017 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:40,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-01-16 18:05:40,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 79. [2020-01-16 18:05:40,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-01-16 18:05:40,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 187 transitions. [2020-01-16 18:05:40,019 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 187 transitions. Word has length 19 [2020-01-16 18:05:40,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:40,019 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 187 transitions. [2020-01-16 18:05:40,019 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:40,020 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 187 transitions. [2020-01-16 18:05:40,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:40,020 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:40,020 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:40,020 INFO L426 AbstractCegarLoop]: === Iteration 671 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:40,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:40,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1100556732, now seen corresponding path program 667 times [2020-01-16 18:05:40,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:40,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543634142] [2020-01-16 18:05:40,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:40,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543634142] [2020-01-16 18:05:40,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:40,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:40,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580659975] [2020-01-16 18:05:40,219 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:40,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:40,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:40,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:40,220 INFO L87 Difference]: Start difference. First operand 79 states and 187 transitions. Second operand 8 states. [2020-01-16 18:05:40,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:40,287 INFO L93 Difference]: Finished difference Result 141 states and 283 transitions. [2020-01-16 18:05:40,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:40,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:40,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:40,288 INFO L225 Difference]: With dead ends: 141 [2020-01-16 18:05:40,288 INFO L226 Difference]: Without dead ends: 131 [2020-01-16 18:05:40,288 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:40,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-01-16 18:05:40,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 83. [2020-01-16 18:05:40,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-01-16 18:05:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 197 transitions. [2020-01-16 18:05:40,290 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 197 transitions. Word has length 19 [2020-01-16 18:05:40,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:40,291 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 197 transitions. [2020-01-16 18:05:40,291 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:40,291 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 197 transitions. [2020-01-16 18:05:40,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:40,291 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:40,291 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:40,292 INFO L426 AbstractCegarLoop]: === Iteration 672 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:40,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:40,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1483797256, now seen corresponding path program 668 times [2020-01-16 18:05:40,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:40,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404802124] [2020-01-16 18:05:40,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:40,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:40,485 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404802124] [2020-01-16 18:05:40,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:40,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:40,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59771421] [2020-01-16 18:05:40,485 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:40,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:40,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:40,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:40,486 INFO L87 Difference]: Start difference. First operand 83 states and 197 transitions. Second operand 8 states. [2020-01-16 18:05:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:40,555 INFO L93 Difference]: Finished difference Result 143 states and 286 transitions. [2020-01-16 18:05:40,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:40,555 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:40,556 INFO L225 Difference]: With dead ends: 143 [2020-01-16 18:05:40,556 INFO L226 Difference]: Without dead ends: 129 [2020-01-16 18:05:40,556 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:40,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-01-16 18:05:40,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 81. [2020-01-16 18:05:40,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-01-16 18:05:40,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 192 transitions. [2020-01-16 18:05:40,558 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 192 transitions. Word has length 19 [2020-01-16 18:05:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:40,558 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 192 transitions. [2020-01-16 18:05:40,558 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:40,559 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 192 transitions. [2020-01-16 18:05:40,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:40,559 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:40,559 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:40,559 INFO L426 AbstractCegarLoop]: === Iteration 673 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:40,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:40,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1845259230, now seen corresponding path program 669 times [2020-01-16 18:05:40,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:40,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299710775] [2020-01-16 18:05:40,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:40,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299710775] [2020-01-16 18:05:40,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:40,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:40,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876912318] [2020-01-16 18:05:40,747 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:40,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:40,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:40,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:40,748 INFO L87 Difference]: Start difference. First operand 81 states and 192 transitions. Second operand 8 states. [2020-01-16 18:05:40,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:40,812 INFO L93 Difference]: Finished difference Result 138 states and 275 transitions. [2020-01-16 18:05:40,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:40,812 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:40,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:40,813 INFO L225 Difference]: With dead ends: 138 [2020-01-16 18:05:40,813 INFO L226 Difference]: Without dead ends: 128 [2020-01-16 18:05:40,813 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:40,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-01-16 18:05:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 83. [2020-01-16 18:05:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-01-16 18:05:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 195 transitions. [2020-01-16 18:05:40,815 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 195 transitions. Word has length 19 [2020-01-16 18:05:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:40,815 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 195 transitions. [2020-01-16 18:05:40,815 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:40,815 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 195 transitions. [2020-01-16 18:05:40,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:40,815 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:40,816 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:40,816 INFO L426 AbstractCegarLoop]: === Iteration 674 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:40,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:40,816 INFO L82 PathProgramCache]: Analyzing trace with hash 116211896, now seen corresponding path program 670 times [2020-01-16 18:05:40,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:40,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301804075] [2020-01-16 18:05:40,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:41,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301804075] [2020-01-16 18:05:41,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:41,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:41,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004136755] [2020-01-16 18:05:41,009 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:41,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:41,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:41,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:41,010 INFO L87 Difference]: Start difference. First operand 83 states and 195 transitions. Second operand 8 states. [2020-01-16 18:05:41,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:41,080 INFO L93 Difference]: Finished difference Result 132 states and 271 transitions. [2020-01-16 18:05:41,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:41,080 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:41,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:41,081 INFO L225 Difference]: With dead ends: 132 [2020-01-16 18:05:41,081 INFO L226 Difference]: Without dead ends: 117 [2020-01-16 18:05:41,081 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:41,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-01-16 18:05:41,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2020-01-16 18:05:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-01-16 18:05:41,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 190 transitions. [2020-01-16 18:05:41,083 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 190 transitions. Word has length 19 [2020-01-16 18:05:41,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:41,083 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 190 transitions. [2020-01-16 18:05:41,083 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:41,083 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 190 transitions. [2020-01-16 18:05:41,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:41,084 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:41,084 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:41,084 INFO L426 AbstractCegarLoop]: === Iteration 675 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:41,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:41,084 INFO L82 PathProgramCache]: Analyzing trace with hash 750310238, now seen corresponding path program 671 times [2020-01-16 18:05:41,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:41,084 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665572437] [2020-01-16 18:05:41,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:41,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665572437] [2020-01-16 18:05:41,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:41,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:41,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148598834] [2020-01-16 18:05:41,277 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:41,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:41,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:41,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:41,278 INFO L87 Difference]: Start difference. First operand 81 states and 190 transitions. Second operand 8 states. [2020-01-16 18:05:41,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:41,351 INFO L93 Difference]: Finished difference Result 133 states and 276 transitions. [2020-01-16 18:05:41,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:41,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:41,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:41,352 INFO L225 Difference]: With dead ends: 133 [2020-01-16 18:05:41,352 INFO L226 Difference]: Without dead ends: 121 [2020-01-16 18:05:41,352 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:41,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-01-16 18:05:41,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 85. [2020-01-16 18:05:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-01-16 18:05:41,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 198 transitions. [2020-01-16 18:05:41,355 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 198 transitions. Word has length 19 [2020-01-16 18:05:41,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:41,355 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 198 transitions. [2020-01-16 18:05:41,355 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:41,355 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 198 transitions. [2020-01-16 18:05:41,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:41,355 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:41,355 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:41,356 INFO L426 AbstractCegarLoop]: === Iteration 676 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:41,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:41,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1605616892, now seen corresponding path program 672 times [2020-01-16 18:05:41,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:41,356 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724146450] [2020-01-16 18:05:41,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:41,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724146450] [2020-01-16 18:05:41,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:41,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:41,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741165809] [2020-01-16 18:05:41,548 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:41,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:41,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:41,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:41,549 INFO L87 Difference]: Start difference. First operand 85 states and 198 transitions. Second operand 8 states. [2020-01-16 18:05:41,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:41,612 INFO L93 Difference]: Finished difference Result 120 states and 255 transitions. [2020-01-16 18:05:41,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:41,612 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:41,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:41,612 INFO L225 Difference]: With dead ends: 120 [2020-01-16 18:05:41,613 INFO L226 Difference]: Without dead ends: 99 [2020-01-16 18:05:41,613 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:41,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-01-16 18:05:41,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 77. [2020-01-16 18:05:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-01-16 18:05:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 183 transitions. [2020-01-16 18:05:41,615 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 183 transitions. Word has length 19 [2020-01-16 18:05:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:41,615 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 183 transitions. [2020-01-16 18:05:41,615 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 183 transitions. [2020-01-16 18:05:41,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:41,615 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:41,616 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:41,616 INFO L426 AbstractCegarLoop]: === Iteration 677 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:41,616 INFO L82 PathProgramCache]: Analyzing trace with hash 598823932, now seen corresponding path program 673 times [2020-01-16 18:05:41,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:41,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944338835] [2020-01-16 18:05:41,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:41,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944338835] [2020-01-16 18:05:41,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:41,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:41,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354518155] [2020-01-16 18:05:41,794 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:41,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:41,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:41,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:41,794 INFO L87 Difference]: Start difference. First operand 77 states and 183 transitions. Second operand 8 states. [2020-01-16 18:05:41,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:41,857 INFO L93 Difference]: Finished difference Result 136 states and 266 transitions. [2020-01-16 18:05:41,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:41,858 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:41,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:41,858 INFO L225 Difference]: With dead ends: 136 [2020-01-16 18:05:41,858 INFO L226 Difference]: Without dead ends: 122 [2020-01-16 18:05:41,858 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:41,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-01-16 18:05:41,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 79. [2020-01-16 18:05:41,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-01-16 18:05:41,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 186 transitions. [2020-01-16 18:05:41,861 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 186 transitions. Word has length 19 [2020-01-16 18:05:41,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:41,861 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 186 transitions. [2020-01-16 18:05:41,861 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:41,861 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 186 transitions. [2020-01-16 18:05:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:41,862 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:41,862 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:41,862 INFO L426 AbstractCegarLoop]: === Iteration 678 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:41,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1718953762, now seen corresponding path program 674 times [2020-01-16 18:05:41,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:41,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563015023] [2020-01-16 18:05:41,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:42,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563015023] [2020-01-16 18:05:42,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:42,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:42,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287868330] [2020-01-16 18:05:42,042 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:42,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:42,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:42,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:42,043 INFO L87 Difference]: Start difference. First operand 79 states and 186 transitions. Second operand 8 states. [2020-01-16 18:05:42,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:42,089 INFO L93 Difference]: Finished difference Result 132 states and 255 transitions. [2020-01-16 18:05:42,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:42,090 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:42,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:42,090 INFO L225 Difference]: With dead ends: 132 [2020-01-16 18:05:42,090 INFO L226 Difference]: Without dead ends: 120 [2020-01-16 18:05:42,090 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:42,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-01-16 18:05:42,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 77. [2020-01-16 18:05:42,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-01-16 18:05:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 181 transitions. [2020-01-16 18:05:42,093 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 181 transitions. Word has length 19 [2020-01-16 18:05:42,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:42,093 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 181 transitions. [2020-01-16 18:05:42,093 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 181 transitions. [2020-01-16 18:05:42,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:42,093 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:42,094 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:42,094 INFO L426 AbstractCegarLoop]: === Iteration 679 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:42,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:42,094 INFO L82 PathProgramCache]: Analyzing trace with hash -145878566, now seen corresponding path program 675 times [2020-01-16 18:05:42,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:42,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689567049] [2020-01-16 18:05:42,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:42,273 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689567049] [2020-01-16 18:05:42,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:42,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:42,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499757932] [2020-01-16 18:05:42,274 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:42,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:42,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:42,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:42,274 INFO L87 Difference]: Start difference. First operand 77 states and 181 transitions. Second operand 8 states. [2020-01-16 18:05:42,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:42,337 INFO L93 Difference]: Finished difference Result 140 states and 276 transitions. [2020-01-16 18:05:42,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:42,338 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:42,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:42,338 INFO L225 Difference]: With dead ends: 140 [2020-01-16 18:05:42,338 INFO L226 Difference]: Without dead ends: 126 [2020-01-16 18:05:42,338 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:42,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-01-16 18:05:42,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 81. [2020-01-16 18:05:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-01-16 18:05:42,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 189 transitions. [2020-01-16 18:05:42,341 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 189 transitions. Word has length 19 [2020-01-16 18:05:42,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:42,341 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 189 transitions. [2020-01-16 18:05:42,341 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 189 transitions. [2020-01-16 18:05:42,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:42,341 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:42,341 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:42,341 INFO L426 AbstractCegarLoop]: === Iteration 680 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:42,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:42,342 INFO L82 PathProgramCache]: Analyzing trace with hash -891175710, now seen corresponding path program 676 times [2020-01-16 18:05:42,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:42,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081500107] [2020-01-16 18:05:42,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:42,517 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081500107] [2020-01-16 18:05:42,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:42,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:42,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336112673] [2020-01-16 18:05:42,517 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:42,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:42,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:42,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:42,518 INFO L87 Difference]: Start difference. First operand 81 states and 189 transitions. Second operand 8 states. [2020-01-16 18:05:42,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:42,584 INFO L93 Difference]: Finished difference Result 138 states and 268 transitions. [2020-01-16 18:05:42,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:42,585 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:42,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:42,585 INFO L225 Difference]: With dead ends: 138 [2020-01-16 18:05:42,585 INFO L226 Difference]: Without dead ends: 122 [2020-01-16 18:05:42,585 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:42,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-01-16 18:05:42,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 77. [2020-01-16 18:05:42,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-01-16 18:05:42,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 179 transitions. [2020-01-16 18:05:42,587 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 179 transitions. Word has length 19 [2020-01-16 18:05:42,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:42,588 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 179 transitions. [2020-01-16 18:05:42,588 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:42,588 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 179 transitions. [2020-01-16 18:05:42,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:42,588 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:42,588 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:42,589 INFO L426 AbstractCegarLoop]: === Iteration 681 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:42,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:42,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1183723960, now seen corresponding path program 677 times [2020-01-16 18:05:42,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:42,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522908645] [2020-01-16 18:05:42,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:42,775 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522908645] [2020-01-16 18:05:42,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:42,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:42,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584837752] [2020-01-16 18:05:42,776 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:42,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:42,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:42,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:42,776 INFO L87 Difference]: Start difference. First operand 77 states and 179 transitions. Second operand 8 states. [2020-01-16 18:05:42,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:42,820 INFO L93 Difference]: Finished difference Result 130 states and 249 transitions. [2020-01-16 18:05:42,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:42,820 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:42,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:42,820 INFO L225 Difference]: With dead ends: 130 [2020-01-16 18:05:42,821 INFO L226 Difference]: Without dead ends: 120 [2020-01-16 18:05:42,821 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:42,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-01-16 18:05:42,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 79. [2020-01-16 18:05:42,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-01-16 18:05:42,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 182 transitions. [2020-01-16 18:05:42,823 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 182 transitions. Word has length 19 [2020-01-16 18:05:42,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:42,823 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 182 transitions. [2020-01-16 18:05:42,823 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:42,823 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 182 transitions. [2020-01-16 18:05:42,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:42,823 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:42,823 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:42,824 INFO L426 AbstractCegarLoop]: === Iteration 682 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:42,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:42,824 INFO L82 PathProgramCache]: Analyzing trace with hash 328417306, now seen corresponding path program 678 times [2020-01-16 18:05:42,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:42,824 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453373309] [2020-01-16 18:05:42,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:43,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453373309] [2020-01-16 18:05:43,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:43,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:43,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517463364] [2020-01-16 18:05:43,003 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:43,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:43,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:43,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:43,004 INFO L87 Difference]: Start difference. First operand 79 states and 182 transitions. Second operand 8 states. [2020-01-16 18:05:43,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:43,068 INFO L93 Difference]: Finished difference Result 132 states and 252 transitions. [2020-01-16 18:05:43,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:43,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:43,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:43,069 INFO L225 Difference]: With dead ends: 132 [2020-01-16 18:05:43,069 INFO L226 Difference]: Without dead ends: 116 [2020-01-16 18:05:43,070 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-01-16 18:05:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-01-16 18:05:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-01-16 18:05:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 174 transitions. [2020-01-16 18:05:43,072 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 174 transitions. Word has length 19 [2020-01-16 18:05:43,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:43,072 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 174 transitions. [2020-01-16 18:05:43,072 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:43,072 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 174 transitions. [2020-01-16 18:05:43,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:43,073 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:43,073 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:43,073 INFO L426 AbstractCegarLoop]: === Iteration 683 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:43,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:43,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1001613922, now seen corresponding path program 679 times [2020-01-16 18:05:43,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:43,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171743696] [2020-01-16 18:05:43,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:43,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:43,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171743696] [2020-01-16 18:05:43,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:43,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:43,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739078529] [2020-01-16 18:05:43,270 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:43,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:43,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:43,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:43,271 INFO L87 Difference]: Start difference. First operand 75 states and 174 transitions. Second operand 8 states. [2020-01-16 18:05:43,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:43,340 INFO L93 Difference]: Finished difference Result 133 states and 254 transitions. [2020-01-16 18:05:43,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:43,340 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:43,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:43,341 INFO L225 Difference]: With dead ends: 133 [2020-01-16 18:05:43,341 INFO L226 Difference]: Without dead ends: 119 [2020-01-16 18:05:43,341 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-01-16 18:05:43,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 75. [2020-01-16 18:05:43,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-01-16 18:05:43,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 172 transitions. [2020-01-16 18:05:43,343 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 172 transitions. Word has length 19 [2020-01-16 18:05:43,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:43,343 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 172 transitions. [2020-01-16 18:05:43,343 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:43,343 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 172 transitions. [2020-01-16 18:05:43,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:43,343 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:43,343 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:43,343 INFO L426 AbstractCegarLoop]: === Iteration 684 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:43,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:43,344 INFO L82 PathProgramCache]: Analyzing trace with hash 118515908, now seen corresponding path program 680 times [2020-01-16 18:05:43,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:43,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421777012] [2020-01-16 18:05:43,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:43,530 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421777012] [2020-01-16 18:05:43,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:43,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:43,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720010156] [2020-01-16 18:05:43,531 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:43,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:43,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:43,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:43,531 INFO L87 Difference]: Start difference. First operand 75 states and 172 transitions. Second operand 8 states. [2020-01-16 18:05:43,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:43,579 INFO L93 Difference]: Finished difference Result 129 states and 243 transitions. [2020-01-16 18:05:43,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:43,580 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:43,580 INFO L225 Difference]: With dead ends: 129 [2020-01-16 18:05:43,580 INFO L226 Difference]: Without dead ends: 117 [2020-01-16 18:05:43,580 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:43,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-01-16 18:05:43,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 73. [2020-01-16 18:05:43,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-01-16 18:05:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 167 transitions. [2020-01-16 18:05:43,583 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 167 transitions. Word has length 19 [2020-01-16 18:05:43,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:43,583 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 167 transitions. [2020-01-16 18:05:43,583 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:43,583 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 167 transitions. [2020-01-16 18:05:43,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:43,583 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:43,584 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:43,584 INFO L426 AbstractCegarLoop]: === Iteration 685 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:43,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:43,584 INFO L82 PathProgramCache]: Analyzing trace with hash -2074699302, now seen corresponding path program 681 times [2020-01-16 18:05:43,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:43,584 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302436849] [2020-01-16 18:05:43,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:43,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302436849] [2020-01-16 18:05:43,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:43,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:43,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240411750] [2020-01-16 18:05:43,776 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:43,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:43,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:43,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:43,777 INFO L87 Difference]: Start difference. First operand 73 states and 167 transitions. Second operand 8 states. [2020-01-16 18:05:43,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:43,841 INFO L93 Difference]: Finished difference Result 133 states and 257 transitions. [2020-01-16 18:05:43,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:43,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:43,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:43,842 INFO L225 Difference]: With dead ends: 133 [2020-01-16 18:05:43,842 INFO L226 Difference]: Without dead ends: 119 [2020-01-16 18:05:43,843 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:43,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-01-16 18:05:43,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 78. [2020-01-16 18:05:43,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-01-16 18:05:43,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 177 transitions. [2020-01-16 18:05:43,845 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 177 transitions. Word has length 19 [2020-01-16 18:05:43,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:43,845 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 177 transitions. [2020-01-16 18:05:43,845 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:43,845 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 177 transitions. [2020-01-16 18:05:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:43,846 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:43,846 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:43,846 INFO L426 AbstractCegarLoop]: === Iteration 686 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:43,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1578211076, now seen corresponding path program 682 times [2020-01-16 18:05:43,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:43,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233332130] [2020-01-16 18:05:43,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:44,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233332130] [2020-01-16 18:05:44,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:44,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:44,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868641123] [2020-01-16 18:05:44,037 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:44,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:44,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:44,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:44,037 INFO L87 Difference]: Start difference. First operand 78 states and 177 transitions. Second operand 8 states. [2020-01-16 18:05:44,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:44,102 INFO L93 Difference]: Finished difference Result 123 states and 241 transitions. [2020-01-16 18:05:44,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:44,103 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:44,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:44,103 INFO L225 Difference]: With dead ends: 123 [2020-01-16 18:05:44,103 INFO L226 Difference]: Without dead ends: 105 [2020-01-16 18:05:44,104 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:44,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-01-16 18:05:44,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 73. [2020-01-16 18:05:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-01-16 18:05:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 165 transitions. [2020-01-16 18:05:44,106 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 165 transitions. Word has length 19 [2020-01-16 18:05:44,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:44,106 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 165 transitions. [2020-01-16 18:05:44,106 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:44,106 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 165 transitions. [2020-01-16 18:05:44,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:44,107 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:44,107 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:44,107 INFO L426 AbstractCegarLoop]: === Iteration 687 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:44,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:44,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1194227064, now seen corresponding path program 683 times [2020-01-16 18:05:44,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:44,108 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128183126] [2020-01-16 18:05:44,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:44,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:44,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128183126] [2020-01-16 18:05:44,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:44,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:44,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402788427] [2020-01-16 18:05:44,308 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:44,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:44,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:44,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:44,308 INFO L87 Difference]: Start difference. First operand 73 states and 165 transitions. Second operand 8 states. [2020-01-16 18:05:44,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:44,354 INFO L93 Difference]: Finished difference Result 126 states and 236 transitions. [2020-01-16 18:05:44,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:44,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:44,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:44,355 INFO L225 Difference]: With dead ends: 126 [2020-01-16 18:05:44,355 INFO L226 Difference]: Without dead ends: 116 [2020-01-16 18:05:44,355 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:44,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-01-16 18:05:44,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-01-16 18:05:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-01-16 18:05:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 168 transitions. [2020-01-16 18:05:44,357 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 168 transitions. Word has length 19 [2020-01-16 18:05:44,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:44,357 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 168 transitions. [2020-01-16 18:05:44,357 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:44,357 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 168 transitions. [2020-01-16 18:05:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:44,358 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:44,358 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:44,358 INFO L426 AbstractCegarLoop]: === Iteration 688 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:44,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:44,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1611335236, now seen corresponding path program 684 times [2020-01-16 18:05:44,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:44,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237527528] [2020-01-16 18:05:44,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:44,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:44,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237527528] [2020-01-16 18:05:44,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:44,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:44,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425461400] [2020-01-16 18:05:44,547 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:44,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:44,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:44,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:44,547 INFO L87 Difference]: Start difference. First operand 75 states and 168 transitions. Second operand 8 states. [2020-01-16 18:05:44,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:44,612 INFO L93 Difference]: Finished difference Result 120 states and 232 transitions. [2020-01-16 18:05:44,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:44,612 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:44,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:44,613 INFO L225 Difference]: With dead ends: 120 [2020-01-16 18:05:44,613 INFO L226 Difference]: Without dead ends: 103 [2020-01-16 18:05:44,613 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:44,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-01-16 18:05:44,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2020-01-16 18:05:44,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-01-16 18:05:44,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 160 transitions. [2020-01-16 18:05:44,615 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 160 transitions. Word has length 19 [2020-01-16 18:05:44,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:44,615 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 160 transitions. [2020-01-16 18:05:44,615 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:44,615 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 160 transitions. [2020-01-16 18:05:44,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:44,616 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:44,616 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:44,616 INFO L426 AbstractCegarLoop]: === Iteration 689 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:44,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:44,616 INFO L82 PathProgramCache]: Analyzing trace with hash 948213022, now seen corresponding path program 685 times [2020-01-16 18:05:44,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:44,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768578671] [2020-01-16 18:05:44,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:44,801 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768578671] [2020-01-16 18:05:44,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:44,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:44,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345167433] [2020-01-16 18:05:44,801 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:44,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:44,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:44,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:44,802 INFO L87 Difference]: Start difference. First operand 71 states and 160 transitions. Second operand 8 states. [2020-01-16 18:05:44,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:44,864 INFO L93 Difference]: Finished difference Result 129 states and 245 transitions. [2020-01-16 18:05:44,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:44,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:44,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:44,865 INFO L225 Difference]: With dead ends: 129 [2020-01-16 18:05:44,865 INFO L226 Difference]: Without dead ends: 115 [2020-01-16 18:05:44,865 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:44,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-01-16 18:05:44,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 71. [2020-01-16 18:05:44,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-01-16 18:05:44,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 156 transitions. [2020-01-16 18:05:44,867 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 156 transitions. Word has length 19 [2020-01-16 18:05:44,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:44,868 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 156 transitions. [2020-01-16 18:05:44,868 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:44,868 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 156 transitions. [2020-01-16 18:05:44,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:44,868 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:44,868 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:44,869 INFO L426 AbstractCegarLoop]: === Iteration 690 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:44,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:44,869 INFO L82 PathProgramCache]: Analyzing trace with hash 202915878, now seen corresponding path program 686 times [2020-01-16 18:05:44,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:44,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078447630] [2020-01-16 18:05:44,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:45,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078447630] [2020-01-16 18:05:45,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:45,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:45,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985967474] [2020-01-16 18:05:45,054 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:45,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:45,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:45,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:45,055 INFO L87 Difference]: Start difference. First operand 71 states and 156 transitions. Second operand 8 states. [2020-01-16 18:05:45,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:45,121 INFO L93 Difference]: Finished difference Result 127 states and 237 transitions. [2020-01-16 18:05:45,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:45,122 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:45,122 INFO L225 Difference]: With dead ends: 127 [2020-01-16 18:05:45,122 INFO L226 Difference]: Without dead ends: 111 [2020-01-16 18:05:45,122 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-01-16 18:05:45,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 67. [2020-01-16 18:05:45,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-01-16 18:05:45,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 144 transitions. [2020-01-16 18:05:45,124 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 144 transitions. Word has length 19 [2020-01-16 18:05:45,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:45,125 INFO L478 AbstractCegarLoop]: Abstraction has 67 states and 144 transitions. [2020-01-16 18:05:45,125 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:45,125 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 144 transitions. [2020-01-16 18:05:45,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:45,125 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:45,125 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:45,125 INFO L426 AbstractCegarLoop]: === Iteration 691 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:45,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:45,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1001613922, now seen corresponding path program 687 times [2020-01-16 18:05:45,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:45,126 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542300398] [2020-01-16 18:05:45,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:45,349 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542300398] [2020-01-16 18:05:45,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:45,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:45,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017537099] [2020-01-16 18:05:45,350 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:45,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:45,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:45,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:45,350 INFO L87 Difference]: Start difference. First operand 67 states and 144 transitions. Second operand 8 states. [2020-01-16 18:05:45,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:45,415 INFO L93 Difference]: Finished difference Result 120 states and 219 transitions. [2020-01-16 18:05:45,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:45,416 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:45,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:45,416 INFO L225 Difference]: With dead ends: 120 [2020-01-16 18:05:45,416 INFO L226 Difference]: Without dead ends: 106 [2020-01-16 18:05:45,416 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:45,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-01-16 18:05:45,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 61. [2020-01-16 18:05:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-01-16 18:05:45,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 127 transitions. [2020-01-16 18:05:45,418 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 127 transitions. Word has length 19 [2020-01-16 18:05:45,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:45,419 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 127 transitions. [2020-01-16 18:05:45,419 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:45,419 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 127 transitions. [2020-01-16 18:05:45,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:45,419 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:45,419 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:45,419 INFO L426 AbstractCegarLoop]: === Iteration 692 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:45,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:45,420 INFO L82 PathProgramCache]: Analyzing trace with hash -32729882, now seen corresponding path program 688 times [2020-01-16 18:05:45,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:45,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507804517] [2020-01-16 18:05:45,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:45,611 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507804517] [2020-01-16 18:05:45,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:45,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:45,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037135773] [2020-01-16 18:05:45,612 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:45,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:45,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:45,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:45,612 INFO L87 Difference]: Start difference. First operand 61 states and 127 transitions. Second operand 8 states. [2020-01-16 18:05:45,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:45,678 INFO L93 Difference]: Finished difference Result 110 states and 203 transitions. [2020-01-16 18:05:45,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:45,678 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:45,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:45,678 INFO L225 Difference]: With dead ends: 110 [2020-01-16 18:05:45,679 INFO L226 Difference]: Without dead ends: 92 [2020-01-16 18:05:45,679 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:45,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-01-16 18:05:45,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-01-16 18:05:45,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-01-16 18:05:45,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 113 transitions. [2020-01-16 18:05:45,681 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 113 transitions. Word has length 19 [2020-01-16 18:05:45,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:45,681 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 113 transitions. [2020-01-16 18:05:45,681 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:45,681 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 113 transitions. [2020-01-16 18:05:45,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:45,681 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:45,681 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:45,681 INFO L426 AbstractCegarLoop]: === Iteration 693 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:45,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:45,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1773987900, now seen corresponding path program 689 times [2020-01-16 18:05:45,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:45,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964224094] [2020-01-16 18:05:45,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:45,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964224094] [2020-01-16 18:05:45,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:45,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:45,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626149949] [2020-01-16 18:05:45,875 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:45,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:45,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:45,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:45,876 INFO L87 Difference]: Start difference. First operand 56 states and 113 transitions. Second operand 8 states. [2020-01-16 18:05:45,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:45,942 INFO L93 Difference]: Finished difference Result 108 states and 199 transitions. [2020-01-16 18:05:45,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:45,943 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:45,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:45,943 INFO L225 Difference]: With dead ends: 108 [2020-01-16 18:05:45,943 INFO L226 Difference]: Without dead ends: 96 [2020-01-16 18:05:45,943 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:45,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-01-16 18:05:45,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 60. [2020-01-16 18:05:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-01-16 18:05:45,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 121 transitions. [2020-01-16 18:05:45,945 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 121 transitions. Word has length 19 [2020-01-16 18:05:45,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:45,945 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 121 transitions. [2020-01-16 18:05:45,946 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:45,946 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 121 transitions. [2020-01-16 18:05:45,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:45,946 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:45,946 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:45,946 INFO L426 AbstractCegarLoop]: === Iteration 694 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:45,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:45,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1662104866, now seen corresponding path program 690 times [2020-01-16 18:05:45,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:45,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283185199] [2020-01-16 18:05:45,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:46,139 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283185199] [2020-01-16 18:05:46,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:46,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:46,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303849788] [2020-01-16 18:05:46,140 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:46,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:46,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:46,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:46,141 INFO L87 Difference]: Start difference. First operand 60 states and 121 transitions. Second operand 8 states. [2020-01-16 18:05:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:46,201 INFO L93 Difference]: Finished difference Result 95 states and 178 transitions. [2020-01-16 18:05:46,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:46,202 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:46,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:46,202 INFO L225 Difference]: With dead ends: 95 [2020-01-16 18:05:46,202 INFO L226 Difference]: Without dead ends: 74 [2020-01-16 18:05:46,203 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:46,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-01-16 18:05:46,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 52. [2020-01-16 18:05:46,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-01-16 18:05:46,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 103 transitions. [2020-01-16 18:05:46,204 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 103 transitions. Word has length 19 [2020-01-16 18:05:46,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:46,204 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 103 transitions. [2020-01-16 18:05:46,205 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:46,205 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 103 transitions. [2020-01-16 18:05:46,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:46,205 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:46,205 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:46,205 INFO L426 AbstractCegarLoop]: === Iteration 695 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:46,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:46,205 INFO L82 PathProgramCache]: Analyzing trace with hash 171031428, now seen corresponding path program 691 times [2020-01-16 18:05:46,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:46,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522410024] [2020-01-16 18:05:46,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:46,402 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522410024] [2020-01-16 18:05:46,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:46,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:46,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580554295] [2020-01-16 18:05:46,403 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:46,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:46,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:46,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:46,403 INFO L87 Difference]: Start difference. First operand 52 states and 103 transitions. Second operand 8 states. [2020-01-16 18:05:46,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:46,448 INFO L93 Difference]: Finished difference Result 101 states and 182 transitions. [2020-01-16 18:05:46,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:46,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:46,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:46,449 INFO L225 Difference]: With dead ends: 101 [2020-01-16 18:05:46,449 INFO L226 Difference]: Without dead ends: 91 [2020-01-16 18:05:46,449 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:46,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-01-16 18:05:46,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 56. [2020-01-16 18:05:46,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-01-16 18:05:46,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 113 transitions. [2020-01-16 18:05:46,450 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 113 transitions. Word has length 19 [2020-01-16 18:05:46,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:46,450 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 113 transitions. [2020-01-16 18:05:46,450 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 113 transitions. [2020-01-16 18:05:46,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:46,450 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:46,451 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:46,451 INFO L426 AbstractCegarLoop]: === Iteration 696 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:46,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:46,451 INFO L82 PathProgramCache]: Analyzing trace with hash -684275226, now seen corresponding path program 692 times [2020-01-16 18:05:46,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:46,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272997274] [2020-01-16 18:05:46,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:46,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:46,642 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272997274] [2020-01-16 18:05:46,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:46,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:46,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279884276] [2020-01-16 18:05:46,642 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:46,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:46,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:46,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:46,643 INFO L87 Difference]: Start difference. First operand 56 states and 113 transitions. Second operand 8 states. [2020-01-16 18:05:46,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:46,707 INFO L93 Difference]: Finished difference Result 103 states and 185 transitions. [2020-01-16 18:05:46,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:46,708 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:46,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:46,708 INFO L225 Difference]: With dead ends: 103 [2020-01-16 18:05:46,708 INFO L226 Difference]: Without dead ends: 89 [2020-01-16 18:05:46,709 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:46,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-01-16 18:05:46,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 54. [2020-01-16 18:05:46,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-01-16 18:05:46,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 108 transitions. [2020-01-16 18:05:46,710 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 108 transitions. Word has length 19 [2020-01-16 18:05:46,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:46,711 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 108 transitions. [2020-01-16 18:05:46,711 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:46,711 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 108 transitions. [2020-01-16 18:05:46,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:46,711 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:46,711 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:46,711 INFO L426 AbstractCegarLoop]: === Iteration 697 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:46,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:46,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1781972386, now seen corresponding path program 693 times [2020-01-16 18:05:46,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:46,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511452636] [2020-01-16 18:05:46,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:46,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511452636] [2020-01-16 18:05:46,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:46,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:46,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088967871] [2020-01-16 18:05:46,907 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:46,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:46,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:46,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:46,908 INFO L87 Difference]: Start difference. First operand 54 states and 108 transitions. Second operand 8 states. [2020-01-16 18:05:46,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:46,955 INFO L93 Difference]: Finished difference Result 97 states and 172 transitions. [2020-01-16 18:05:46,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:46,956 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:46,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:46,956 INFO L225 Difference]: With dead ends: 97 [2020-01-16 18:05:46,956 INFO L226 Difference]: Without dead ends: 87 [2020-01-16 18:05:46,957 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:46,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-01-16 18:05:46,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 56. [2020-01-16 18:05:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-01-16 18:05:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 111 transitions. [2020-01-16 18:05:46,958 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 111 transitions. Word has length 19 [2020-01-16 18:05:46,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:46,959 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 111 transitions. [2020-01-16 18:05:46,959 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 111 transitions. [2020-01-16 18:05:46,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:46,959 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:46,959 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:46,959 INFO L426 AbstractCegarLoop]: === Iteration 698 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:46,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:46,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1023589914, now seen corresponding path program 694 times [2020-01-16 18:05:46,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:46,960 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361303762] [2020-01-16 18:05:46,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:47,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361303762] [2020-01-16 18:05:47,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:47,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:47,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449260737] [2020-01-16 18:05:47,149 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:47,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:47,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:47,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:47,150 INFO L87 Difference]: Start difference. First operand 56 states and 111 transitions. Second operand 8 states. [2020-01-16 18:05:47,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:47,215 INFO L93 Difference]: Finished difference Result 91 states and 168 transitions. [2020-01-16 18:05:47,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:47,215 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:47,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:47,216 INFO L225 Difference]: With dead ends: 91 [2020-01-16 18:05:47,216 INFO L226 Difference]: Without dead ends: 76 [2020-01-16 18:05:47,216 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:47,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-01-16 18:05:47,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 54. [2020-01-16 18:05:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-01-16 18:05:47,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 106 transitions. [2020-01-16 18:05:47,218 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 106 transitions. Word has length 19 [2020-01-16 18:05:47,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:47,218 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 106 transitions. [2020-01-16 18:05:47,218 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:47,218 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 106 transitions. [2020-01-16 18:05:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:47,219 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:47,219 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:47,219 INFO L426 AbstractCegarLoop]: === Iteration 699 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:47,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:47,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1757360606, now seen corresponding path program 695 times [2020-01-16 18:05:47,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:47,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038912123] [2020-01-16 18:05:47,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:47,410 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038912123] [2020-01-16 18:05:47,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:47,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:47,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405307521] [2020-01-16 18:05:47,411 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:47,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:47,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:47,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:47,411 INFO L87 Difference]: Start difference. First operand 54 states and 106 transitions. Second operand 8 states. [2020-01-16 18:05:47,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:47,476 INFO L93 Difference]: Finished difference Result 84 states and 153 transitions. [2020-01-16 18:05:47,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:47,476 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:47,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:47,477 INFO L225 Difference]: With dead ends: 84 [2020-01-16 18:05:47,477 INFO L226 Difference]: Without dead ends: 72 [2020-01-16 18:05:47,477 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:47,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-01-16 18:05:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2020-01-16 18:05:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-01-16 18:05:47,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 114 transitions. [2020-01-16 18:05:47,479 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 114 transitions. Word has length 19 [2020-01-16 18:05:47,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:47,479 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 114 transitions. [2020-01-16 18:05:47,479 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:47,479 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 114 transitions. [2020-01-16 18:05:47,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:47,480 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:47,480 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:47,480 INFO L426 AbstractCegarLoop]: === Iteration 700 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:47,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:47,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1781972386, now seen corresponding path program 696 times [2020-01-16 18:05:47,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:47,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128669356] [2020-01-16 18:05:47,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:47,688 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128669356] [2020-01-16 18:05:47,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:47,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:47,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428345683] [2020-01-16 18:05:47,688 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:47,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:47,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:47,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:47,688 INFO L87 Difference]: Start difference. First operand 58 states and 114 transitions. Second operand 8 states. [2020-01-16 18:05:47,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:47,752 INFO L93 Difference]: Finished difference Result 71 states and 132 transitions. [2020-01-16 18:05:47,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:47,752 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:47,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:47,752 INFO L225 Difference]: With dead ends: 71 [2020-01-16 18:05:47,753 INFO L226 Difference]: Without dead ends: 50 [2020-01-16 18:05:47,753 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:47,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-01-16 18:05:47,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-01-16 18:05:47,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-01-16 18:05:47,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 99 transitions. [2020-01-16 18:05:47,754 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 99 transitions. Word has length 19 [2020-01-16 18:05:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:47,755 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 99 transitions. [2020-01-16 18:05:47,755 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:47,755 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 99 transitions. [2020-01-16 18:05:47,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:47,755 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:47,755 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:47,755 INFO L426 AbstractCegarLoop]: === Iteration 701 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:47,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:47,755 INFO L82 PathProgramCache]: Analyzing trace with hash -821726946, now seen corresponding path program 697 times [2020-01-16 18:05:47,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:47,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310688227] [2020-01-16 18:05:47,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:47,989 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310688227] [2020-01-16 18:05:47,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:47,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:47,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635174514] [2020-01-16 18:05:47,989 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:47,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:47,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:47,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:47,990 INFO L87 Difference]: Start difference. First operand 50 states and 99 transitions. Second operand 8 states. [2020-01-16 18:05:48,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:48,059 INFO L93 Difference]: Finished difference Result 83 states and 136 transitions. [2020-01-16 18:05:48,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:48,060 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:48,060 INFO L225 Difference]: With dead ends: 83 [2020-01-16 18:05:48,060 INFO L226 Difference]: Without dead ends: 73 [2020-01-16 18:05:48,061 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-01-16 18:05:48,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 51. [2020-01-16 18:05:48,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-01-16 18:05:48,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 100 transitions. [2020-01-16 18:05:48,062 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 100 transitions. Word has length 19 [2020-01-16 18:05:48,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:48,063 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 100 transitions. [2020-01-16 18:05:48,063 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:48,063 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 100 transitions. [2020-01-16 18:05:48,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:48,063 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:48,063 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:48,063 INFO L426 AbstractCegarLoop]: === Iteration 702 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:48,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:48,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1061369284, now seen corresponding path program 698 times [2020-01-16 18:05:48,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:48,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354947713] [2020-01-16 18:05:48,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:48,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:48,281 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354947713] [2020-01-16 18:05:48,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:48,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:48,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772083831] [2020-01-16 18:05:48,282 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:48,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:48,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:48,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:48,282 INFO L87 Difference]: Start difference. First operand 51 states and 100 transitions. Second operand 8 states. [2020-01-16 18:05:48,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:48,331 INFO L93 Difference]: Finished difference Result 83 states and 135 transitions. [2020-01-16 18:05:48,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:48,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:48,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:48,332 INFO L225 Difference]: With dead ends: 83 [2020-01-16 18:05:48,332 INFO L226 Difference]: Without dead ends: 72 [2020-01-16 18:05:48,333 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:48,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-01-16 18:05:48,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 50. [2020-01-16 18:05:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-01-16 18:05:48,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 98 transitions. [2020-01-16 18:05:48,334 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 98 transitions. Word has length 19 [2020-01-16 18:05:48,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:48,335 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 98 transitions. [2020-01-16 18:05:48,335 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:48,335 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 98 transitions. [2020-01-16 18:05:48,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:48,335 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:48,335 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:48,335 INFO L426 AbstractCegarLoop]: === Iteration 703 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:48,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:48,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1566429444, now seen corresponding path program 699 times [2020-01-16 18:05:48,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:48,336 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603024997] [2020-01-16 18:05:48,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:48,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603024997] [2020-01-16 18:05:48,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:48,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:48,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525334297] [2020-01-16 18:05:48,540 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:48,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:48,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:48,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:48,540 INFO L87 Difference]: Start difference. First operand 50 states and 98 transitions. Second operand 8 states. [2020-01-16 18:05:48,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:48,609 INFO L93 Difference]: Finished difference Result 86 states and 143 transitions. [2020-01-16 18:05:48,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:48,610 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:48,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:48,610 INFO L225 Difference]: With dead ends: 86 [2020-01-16 18:05:48,610 INFO L226 Difference]: Without dead ends: 76 [2020-01-16 18:05:48,610 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-01-16 18:05:48,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 52. [2020-01-16 18:05:48,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-01-16 18:05:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 101 transitions. [2020-01-16 18:05:48,612 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 101 transitions. Word has length 19 [2020-01-16 18:05:48,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:48,612 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 101 transitions. [2020-01-16 18:05:48,612 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:48,613 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 101 transitions. [2020-01-16 18:05:48,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:48,613 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:48,613 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:48,613 INFO L426 AbstractCegarLoop]: === Iteration 704 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:48,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:48,614 INFO L82 PathProgramCache]: Analyzing trace with hash 144183864, now seen corresponding path program 700 times [2020-01-16 18:05:48,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:48,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666262558] [2020-01-16 18:05:48,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:48,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:48,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666262558] [2020-01-16 18:05:48,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:48,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:48,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900223469] [2020-01-16 18:05:48,825 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:48,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:48,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:48,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:48,825 INFO L87 Difference]: Start difference. First operand 52 states and 101 transitions. Second operand 8 states. [2020-01-16 18:05:48,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:48,891 INFO L93 Difference]: Finished difference Result 88 states and 146 transitions. [2020-01-16 18:05:48,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:48,891 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:48,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:48,892 INFO L225 Difference]: With dead ends: 88 [2020-01-16 18:05:48,892 INFO L226 Difference]: Without dead ends: 74 [2020-01-16 18:05:48,892 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:48,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-01-16 18:05:48,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 50. [2020-01-16 18:05:48,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-01-16 18:05:48,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 97 transitions. [2020-01-16 18:05:48,894 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 97 transitions. Word has length 19 [2020-01-16 18:05:48,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:48,894 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 97 transitions. [2020-01-16 18:05:48,894 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:48,894 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 97 transitions. [2020-01-16 18:05:48,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:48,894 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:48,895 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:48,895 INFO L426 AbstractCegarLoop]: === Iteration 705 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:48,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:48,895 INFO L82 PathProgramCache]: Analyzing trace with hash -2134454664, now seen corresponding path program 701 times [2020-01-16 18:05:48,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:48,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73246038] [2020-01-16 18:05:48,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:49,105 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73246038] [2020-01-16 18:05:49,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:49,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:49,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337264298] [2020-01-16 18:05:49,106 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:49,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:49,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:49,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:49,106 INFO L87 Difference]: Start difference. First operand 50 states and 97 transitions. Second operand 8 states. [2020-01-16 18:05:49,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:49,148 INFO L93 Difference]: Finished difference Result 86 states and 142 transitions. [2020-01-16 18:05:49,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:49,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:49,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:49,149 INFO L225 Difference]: With dead ends: 86 [2020-01-16 18:05:49,149 INFO L226 Difference]: Without dead ends: 76 [2020-01-16 18:05:49,149 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:49,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-01-16 18:05:49,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 52. [2020-01-16 18:05:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-01-16 18:05:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 100 transitions. [2020-01-16 18:05:49,151 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 100 transitions. Word has length 19 [2020-01-16 18:05:49,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:49,151 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 100 transitions. [2020-01-16 18:05:49,151 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:49,151 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 100 transitions. [2020-01-16 18:05:49,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:49,151 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:49,152 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:49,152 INFO L426 AbstractCegarLoop]: === Iteration 706 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:49,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:49,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1305205978, now seen corresponding path program 702 times [2020-01-16 18:05:49,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:49,152 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119933137] [2020-01-16 18:05:49,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:49,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119933137] [2020-01-16 18:05:49,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:49,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:49,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411271071] [2020-01-16 18:05:49,355 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:49,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:49,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:49,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:49,356 INFO L87 Difference]: Start difference. First operand 52 states and 100 transitions. Second operand 8 states. [2020-01-16 18:05:49,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:49,426 INFO L93 Difference]: Finished difference Result 88 states and 145 transitions. [2020-01-16 18:05:49,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:49,426 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:49,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:49,426 INFO L225 Difference]: With dead ends: 88 [2020-01-16 18:05:49,426 INFO L226 Difference]: Without dead ends: 73 [2020-01-16 18:05:49,426 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:49,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-01-16 18:05:49,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 49. [2020-01-16 18:05:49,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-01-16 18:05:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 95 transitions. [2020-01-16 18:05:49,427 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 95 transitions. Word has length 19 [2020-01-16 18:05:49,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:49,427 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 95 transitions. [2020-01-16 18:05:49,428 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:49,428 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 95 transitions. [2020-01-16 18:05:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:49,428 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:49,428 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:49,428 INFO L426 AbstractCegarLoop]: === Iteration 707 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:49,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:49,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1872802496, now seen corresponding path program 703 times [2020-01-16 18:05:49,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:49,428 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738042238] [2020-01-16 18:05:49,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:49,638 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738042238] [2020-01-16 18:05:49,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:49,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:49,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550456720] [2020-01-16 18:05:49,638 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:49,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:49,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:49,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:49,639 INFO L87 Difference]: Start difference. First operand 49 states and 95 transitions. Second operand 8 states. [2020-01-16 18:05:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:49,702 INFO L93 Difference]: Finished difference Result 81 states and 130 transitions. [2020-01-16 18:05:49,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:49,702 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:49,703 INFO L225 Difference]: With dead ends: 81 [2020-01-16 18:05:49,703 INFO L226 Difference]: Without dead ends: 71 [2020-01-16 18:05:49,703 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:49,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-01-16 18:05:49,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 49. [2020-01-16 18:05:49,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-01-16 18:05:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 94 transitions. [2020-01-16 18:05:49,704 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 94 transitions. Word has length 19 [2020-01-16 18:05:49,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:49,705 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 94 transitions. [2020-01-16 18:05:49,705 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:49,705 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 94 transitions. [2020-01-16 18:05:49,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:49,705 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:49,705 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:49,705 INFO L426 AbstractCegarLoop]: === Iteration 708 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:49,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:49,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1633160158, now seen corresponding path program 704 times [2020-01-16 18:05:49,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:49,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834987653] [2020-01-16 18:05:49,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:49,919 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834987653] [2020-01-16 18:05:49,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:49,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:49,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141902515] [2020-01-16 18:05:49,920 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:49,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:49,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:49,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:49,920 INFO L87 Difference]: Start difference. First operand 49 states and 94 transitions. Second operand 8 states. [2020-01-16 18:05:49,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:49,963 INFO L93 Difference]: Finished difference Result 81 states and 129 transitions. [2020-01-16 18:05:49,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:49,964 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:49,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:49,964 INFO L225 Difference]: With dead ends: 81 [2020-01-16 18:05:49,964 INFO L226 Difference]: Without dead ends: 70 [2020-01-16 18:05:49,964 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:49,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-01-16 18:05:49,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 48. [2020-01-16 18:05:49,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-01-16 18:05:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 92 transitions. [2020-01-16 18:05:49,966 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 92 transitions. Word has length 19 [2020-01-16 18:05:49,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:49,966 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 92 transitions. [2020-01-16 18:05:49,966 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:49,966 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 92 transitions. [2020-01-16 18:05:49,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:49,967 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:49,967 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:49,967 INFO L426 AbstractCegarLoop]: === Iteration 709 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:49,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:49,967 INFO L82 PathProgramCache]: Analyzing trace with hash 799717116, now seen corresponding path program 705 times [2020-01-16 18:05:49,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:49,968 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196890537] [2020-01-16 18:05:49,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:50,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196890537] [2020-01-16 18:05:50,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:50,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:50,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869573213] [2020-01-16 18:05:50,166 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:50,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:50,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:50,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:50,167 INFO L87 Difference]: Start difference. First operand 48 states and 92 transitions. Second operand 8 states. [2020-01-16 18:05:50,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:50,230 INFO L93 Difference]: Finished difference Result 83 states and 136 transitions. [2020-01-16 18:05:50,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:50,230 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:50,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:50,230 INFO L225 Difference]: With dead ends: 83 [2020-01-16 18:05:50,231 INFO L226 Difference]: Without dead ends: 73 [2020-01-16 18:05:50,231 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:50,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-01-16 18:05:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 50. [2020-01-16 18:05:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-01-16 18:05:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 95 transitions. [2020-01-16 18:05:50,232 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 95 transitions. Word has length 19 [2020-01-16 18:05:50,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:50,232 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 95 transitions. [2020-01-16 18:05:50,233 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:50,233 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 95 transitions. [2020-01-16 18:05:50,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:50,233 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:50,233 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:50,233 INFO L426 AbstractCegarLoop]: === Iteration 710 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:50,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:50,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1754696120, now seen corresponding path program 706 times [2020-01-16 18:05:50,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:50,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682483905] [2020-01-16 18:05:50,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:50,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682483905] [2020-01-16 18:05:50,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:50,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:50,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535920011] [2020-01-16 18:05:50,433 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:50,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:50,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:50,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:50,434 INFO L87 Difference]: Start difference. First operand 50 states and 95 transitions. Second operand 8 states. [2020-01-16 18:05:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:50,494 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2020-01-16 18:05:50,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:50,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:50,495 INFO L225 Difference]: With dead ends: 77 [2020-01-16 18:05:50,495 INFO L226 Difference]: Without dead ends: 62 [2020-01-16 18:05:50,495 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-01-16 18:05:50,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2020-01-16 18:05:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-01-16 18:05:50,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 91 transitions. [2020-01-16 18:05:50,497 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 91 transitions. Word has length 19 [2020-01-16 18:05:50,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:50,497 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 91 transitions. [2020-01-16 18:05:50,497 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 91 transitions. [2020-01-16 18:05:50,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:50,498 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:50,498 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:50,498 INFO L426 AbstractCegarLoop]: === Iteration 711 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:50,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:50,498 INFO L82 PathProgramCache]: Analyzing trace with hash -2123951560, now seen corresponding path program 707 times [2020-01-16 18:05:50,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:50,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566968113] [2020-01-16 18:05:50,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:50,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566968113] [2020-01-16 18:05:50,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:50,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:50,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138212305] [2020-01-16 18:05:50,704 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:50,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:50,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:50,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:50,705 INFO L87 Difference]: Start difference. First operand 48 states and 91 transitions. Second operand 8 states. [2020-01-16 18:05:50,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:50,744 INFO L93 Difference]: Finished difference Result 83 states and 135 transitions. [2020-01-16 18:05:50,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:50,744 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:50,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:50,744 INFO L225 Difference]: With dead ends: 83 [2020-01-16 18:05:50,744 INFO L226 Difference]: Without dead ends: 73 [2020-01-16 18:05:50,745 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-01-16 18:05:50,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 50. [2020-01-16 18:05:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-01-16 18:05:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 94 transitions. [2020-01-16 18:05:50,746 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 94 transitions. Word has length 19 [2020-01-16 18:05:50,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:50,746 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 94 transitions. [2020-01-16 18:05:50,747 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:50,747 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 94 transitions. [2020-01-16 18:05:50,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:50,747 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:50,747 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:50,747 INFO L426 AbstractCegarLoop]: === Iteration 712 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:50,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:50,747 INFO L82 PathProgramCache]: Analyzing trace with hash -634546564, now seen corresponding path program 708 times [2020-01-16 18:05:50,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:50,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776787206] [2020-01-16 18:05:50,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:50,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:50,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776787206] [2020-01-16 18:05:50,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:50,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:50,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446504401] [2020-01-16 18:05:50,946 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:50,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:50,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:50,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:50,946 INFO L87 Difference]: Start difference. First operand 50 states and 94 transitions. Second operand 8 states. [2020-01-16 18:05:51,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:51,007 INFO L93 Difference]: Finished difference Result 77 states and 131 transitions. [2020-01-16 18:05:51,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:51,007 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:51,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:51,008 INFO L225 Difference]: With dead ends: 77 [2020-01-16 18:05:51,008 INFO L226 Difference]: Without dead ends: 61 [2020-01-16 18:05:51,008 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:51,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-01-16 18:05:51,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47. [2020-01-16 18:05:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-01-16 18:05:51,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 89 transitions. [2020-01-16 18:05:51,009 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 89 transitions. Word has length 19 [2020-01-16 18:05:51,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:51,010 INFO L478 AbstractCegarLoop]: Abstraction has 47 states and 89 transitions. [2020-01-16 18:05:51,010 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:51,010 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 89 transitions. [2020-01-16 18:05:51,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:51,010 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:51,010 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:51,010 INFO L426 AbstractCegarLoop]: === Iteration 713 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:51,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:51,011 INFO L82 PathProgramCache]: Analyzing trace with hash -472337856, now seen corresponding path program 709 times [2020-01-16 18:05:51,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:51,011 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850196340] [2020-01-16 18:05:51,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:51,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850196340] [2020-01-16 18:05:51,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:51,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:51,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172043780] [2020-01-16 18:05:51,215 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:51,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:51,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:51,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:51,216 INFO L87 Difference]: Start difference. First operand 47 states and 89 transitions. Second operand 8 states. [2020-01-16 18:05:51,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:51,278 INFO L93 Difference]: Finished difference Result 79 states and 126 transitions. [2020-01-16 18:05:51,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:51,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:51,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:51,279 INFO L225 Difference]: With dead ends: 79 [2020-01-16 18:05:51,279 INFO L226 Difference]: Without dead ends: 69 [2020-01-16 18:05:51,279 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:51,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-01-16 18:05:51,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2020-01-16 18:05:51,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-01-16 18:05:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 87 transitions. [2020-01-16 18:05:51,281 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 87 transitions. Word has length 19 [2020-01-16 18:05:51,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:51,282 INFO L478 AbstractCegarLoop]: Abstraction has 47 states and 87 transitions. [2020-01-16 18:05:51,282 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 87 transitions. [2020-01-16 18:05:51,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:51,282 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:51,283 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:51,283 INFO L426 AbstractCegarLoop]: === Iteration 714 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:51,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:51,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1238275452, now seen corresponding path program 710 times [2020-01-16 18:05:51,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:51,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549510341] [2020-01-16 18:05:51,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:51,485 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549510341] [2020-01-16 18:05:51,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:51,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:51,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243073082] [2020-01-16 18:05:51,486 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:51,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:51,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:51,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:51,486 INFO L87 Difference]: Start difference. First operand 47 states and 87 transitions. Second operand 8 states. [2020-01-16 18:05:51,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:51,546 INFO L93 Difference]: Finished difference Result 81 states and 129 transitions. [2020-01-16 18:05:51,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:51,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:51,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:51,547 INFO L225 Difference]: With dead ends: 81 [2020-01-16 18:05:51,547 INFO L226 Difference]: Without dead ends: 67 [2020-01-16 18:05:51,548 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:51,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-01-16 18:05:51,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 45. [2020-01-16 18:05:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-01-16 18:05:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 82 transitions. [2020-01-16 18:05:51,549 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 82 transitions. Word has length 19 [2020-01-16 18:05:51,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:51,549 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 82 transitions. [2020-01-16 18:05:51,549 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 82 transitions. [2020-01-16 18:05:51,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:51,550 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:51,550 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:51,550 INFO L426 AbstractCegarLoop]: === Iteration 715 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:51,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:51,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1872802496, now seen corresponding path program 711 times [2020-01-16 18:05:51,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:51,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761656325] [2020-01-16 18:05:51,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:51,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761656325] [2020-01-16 18:05:51,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:51,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:51,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270454385] [2020-01-16 18:05:51,744 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:51,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:51,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:51,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:51,744 INFO L87 Difference]: Start difference. First operand 45 states and 82 transitions. Second operand 8 states. [2020-01-16 18:05:51,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:51,801 INFO L93 Difference]: Finished difference Result 76 states and 118 transitions. [2020-01-16 18:05:51,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:51,801 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:51,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:51,801 INFO L225 Difference]: With dead ends: 76 [2020-01-16 18:05:51,801 INFO L226 Difference]: Without dead ends: 66 [2020-01-16 18:05:51,801 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-01-16 18:05:51,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 43. [2020-01-16 18:05:51,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-01-16 18:05:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 77 transitions. [2020-01-16 18:05:51,803 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 77 transitions. Word has length 19 [2020-01-16 18:05:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:51,803 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 77 transitions. [2020-01-16 18:05:51,803 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:51,803 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 77 transitions. [2020-01-16 18:05:51,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:51,804 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:51,804 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:51,804 INFO L426 AbstractCegarLoop]: === Iteration 716 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:51,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:51,804 INFO L82 PathProgramCache]: Analyzing trace with hash 143755162, now seen corresponding path program 712 times [2020-01-16 18:05:51,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:51,804 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977300183] [2020-01-16 18:05:51,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:52,003 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977300183] [2020-01-16 18:05:52,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:52,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:52,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529733984] [2020-01-16 18:05:52,004 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:52,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:52,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:52,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:52,004 INFO L87 Difference]: Start difference. First operand 43 states and 77 transitions. Second operand 8 states. [2020-01-16 18:05:52,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:52,065 INFO L93 Difference]: Finished difference Result 70 states and 114 transitions. [2020-01-16 18:05:52,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:52,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:52,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:52,066 INFO L225 Difference]: With dead ends: 70 [2020-01-16 18:05:52,066 INFO L226 Difference]: Without dead ends: 55 [2020-01-16 18:05:52,066 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:52,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-01-16 18:05:52,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2020-01-16 18:05:52,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-01-16 18:05:52,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 72 transitions. [2020-01-16 18:05:52,068 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 72 transitions. Word has length 19 [2020-01-16 18:05:52,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:52,068 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 72 transitions. [2020-01-16 18:05:52,068 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:52,068 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 72 transitions. [2020-01-16 18:05:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:52,069 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:52,069 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:52,069 INFO L426 AbstractCegarLoop]: === Iteration 717 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:52,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:52,069 INFO L82 PathProgramCache]: Analyzing trace with hash 777853504, now seen corresponding path program 713 times [2020-01-16 18:05:52,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:52,069 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195729147] [2020-01-16 18:05:52,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:52,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195729147] [2020-01-16 18:05:52,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:52,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:52,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990549222] [2020-01-16 18:05:52,277 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:52,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:52,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:52,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:52,277 INFO L87 Difference]: Start difference. First operand 41 states and 72 transitions. Second operand 8 states. [2020-01-16 18:05:52,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:52,340 INFO L93 Difference]: Finished difference Result 71 states and 119 transitions. [2020-01-16 18:05:52,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:52,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:52,341 INFO L225 Difference]: With dead ends: 71 [2020-01-16 18:05:52,341 INFO L226 Difference]: Without dead ends: 59 [2020-01-16 18:05:52,341 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:52,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-01-16 18:05:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2020-01-16 18:05:52,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-01-16 18:05:52,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 80 transitions. [2020-01-16 18:05:52,343 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 80 transitions. Word has length 19 [2020-01-16 18:05:52,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:52,343 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 80 transitions. [2020-01-16 18:05:52,343 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 80 transitions. [2020-01-16 18:05:52,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:52,344 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:52,344 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:52,344 INFO L426 AbstractCegarLoop]: === Iteration 718 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:52,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:52,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1633160158, now seen corresponding path program 714 times [2020-01-16 18:05:52,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:52,345 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350593317] [2020-01-16 18:05:52,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:52,560 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350593317] [2020-01-16 18:05:52,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:52,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:52,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812222547] [2020-01-16 18:05:52,561 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:52,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:52,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:52,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:52,561 INFO L87 Difference]: Start difference. First operand 45 states and 80 transitions. Second operand 8 states. [2020-01-16 18:05:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:52,619 INFO L93 Difference]: Finished difference Result 58 states and 98 transitions. [2020-01-16 18:05:52,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:52,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:52,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:52,620 INFO L225 Difference]: With dead ends: 58 [2020-01-16 18:05:52,620 INFO L226 Difference]: Without dead ends: 39 [2020-01-16 18:05:52,620 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:52,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-01-16 18:05:52,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-01-16 18:05:52,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-01-16 18:05:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 68 transitions. [2020-01-16 18:05:52,621 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 68 transitions. Word has length 19 [2020-01-16 18:05:52,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:52,621 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 68 transitions. [2020-01-16 18:05:52,621 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:52,621 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 68 transitions. [2020-01-16 18:05:52,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:52,621 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:52,621 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:52,621 INFO L426 AbstractCegarLoop]: === Iteration 719 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:52,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:52,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1654166366, now seen corresponding path program 715 times [2020-01-16 18:05:52,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:52,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787930122] [2020-01-16 18:05:52,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:52,836 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787930122] [2020-01-16 18:05:52,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:52,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:52,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960059296] [2020-01-16 18:05:52,837 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:52,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:52,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:52,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:52,837 INFO L87 Difference]: Start difference. First operand 39 states and 68 transitions. Second operand 8 states. [2020-01-16 18:05:52,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:52,876 INFO L93 Difference]: Finished difference Result 58 states and 88 transitions. [2020-01-16 18:05:52,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:52,876 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:52,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:52,877 INFO L225 Difference]: With dead ends: 58 [2020-01-16 18:05:52,877 INFO L226 Difference]: Without dead ends: 48 [2020-01-16 18:05:52,877 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:52,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-01-16 18:05:52,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2020-01-16 18:05:52,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-01-16 18:05:52,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 66 transitions. [2020-01-16 18:05:52,878 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 66 transitions. Word has length 19 [2020-01-16 18:05:52,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:52,879 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 66 transitions. [2020-01-16 18:05:52,879 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 66 transitions. [2020-01-16 18:05:52,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:52,879 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:52,879 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:52,879 INFO L426 AbstractCegarLoop]: === Iteration 720 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:52,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:52,880 INFO L82 PathProgramCache]: Analyzing trace with hash 798859712, now seen corresponding path program 716 times [2020-01-16 18:05:52,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:52,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400915077] [2020-01-16 18:05:52,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:53,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:53,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400915077] [2020-01-16 18:05:53,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:53,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:53,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906255911] [2020-01-16 18:05:53,083 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:53,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:53,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:53,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:53,083 INFO L87 Difference]: Start difference. First operand 39 states and 66 transitions. Second operand 8 states. [2020-01-16 18:05:53,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:53,140 INFO L93 Difference]: Finished difference Result 60 states and 91 transitions. [2020-01-16 18:05:53,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:53,141 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:53,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:53,141 INFO L225 Difference]: With dead ends: 60 [2020-01-16 18:05:53,141 INFO L226 Difference]: Without dead ends: 46 [2020-01-16 18:05:53,141 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-01-16 18:05:53,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2020-01-16 18:05:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-01-16 18:05:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 61 transitions. [2020-01-16 18:05:53,143 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 61 transitions. Word has length 19 [2020-01-16 18:05:53,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:53,143 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 61 transitions. [2020-01-16 18:05:53,143 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:53,143 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 61 transitions. [2020-01-16 18:05:53,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:53,143 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:53,144 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:53,144 INFO L426 AbstractCegarLoop]: === Iteration 721 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:53,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:53,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1029859972, now seen corresponding path program 717 times [2020-01-16 18:05:53,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:53,144 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479693148] [2020-01-16 18:05:53,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:53,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479693148] [2020-01-16 18:05:53,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:53,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:53,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566722523] [2020-01-16 18:05:53,346 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:53,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:53,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:53,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:53,347 INFO L87 Difference]: Start difference. First operand 37 states and 61 transitions. Second operand 8 states. [2020-01-16 18:05:53,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:53,386 INFO L93 Difference]: Finished difference Result 54 states and 78 transitions. [2020-01-16 18:05:53,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:53,387 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:53,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:53,387 INFO L225 Difference]: With dead ends: 54 [2020-01-16 18:05:53,387 INFO L226 Difference]: Without dead ends: 44 [2020-01-16 18:05:53,387 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:53,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-01-16 18:05:53,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2020-01-16 18:05:53,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-01-16 18:05:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-01-16 18:05:53,389 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 19 [2020-01-16 18:05:53,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:53,389 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-01-16 18:05:53,389 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:53,389 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-01-16 18:05:53,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:53,390 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:53,390 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:53,390 INFO L426 AbstractCegarLoop]: === Iteration 722 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:53,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:53,390 INFO L82 PathProgramCache]: Analyzing trace with hash 459545024, now seen corresponding path program 718 times [2020-01-16 18:05:53,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:53,390 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395277413] [2020-01-16 18:05:53,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:53,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395277413] [2020-01-16 18:05:53,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:53,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:53,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506226174] [2020-01-16 18:05:53,590 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:53,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:53,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:53,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:53,590 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 8 states. [2020-01-16 18:05:53,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:53,652 INFO L93 Difference]: Finished difference Result 48 states and 74 transitions. [2020-01-16 18:05:53,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:53,652 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:53,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:53,653 INFO L225 Difference]: With dead ends: 48 [2020-01-16 18:05:53,653 INFO L226 Difference]: Without dead ends: 33 [2020-01-16 18:05:53,653 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-01-16 18:05:53,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-01-16 18:05:53,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-01-16 18:05:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-01-16 18:05:53,654 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 19 [2020-01-16 18:05:53,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:53,655 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-01-16 18:05:53,655 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:53,655 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-01-16 18:05:53,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:53,655 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:53,655 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:53,655 INFO L426 AbstractCegarLoop]: === Iteration 723 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:53,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:53,656 INFO L82 PathProgramCache]: Analyzing trace with hash -274225668, now seen corresponding path program 719 times [2020-01-16 18:05:53,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:53,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136182942] [2020-01-16 18:05:53,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:53,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136182942] [2020-01-16 18:05:53,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:53,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:53,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512600176] [2020-01-16 18:05:53,861 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:53,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:53,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:53,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:53,862 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 8 states. [2020-01-16 18:05:53,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:53,917 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-01-16 18:05:53,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:53,917 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:53,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:53,917 INFO L225 Difference]: With dead ends: 41 [2020-01-16 18:05:53,918 INFO L226 Difference]: Without dead ends: 29 [2020-01-16 18:05:53,918 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:53,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-01-16 18:05:53,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-01-16 18:05:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-01-16 18:05:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2020-01-16 18:05:53,919 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 19 [2020-01-16 18:05:53,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:53,919 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-01-16 18:05:53,919 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:53,919 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2020-01-16 18:05:53,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-01-16 18:05:53,919 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:53,920 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:53,920 INFO L426 AbstractCegarLoop]: === Iteration 724 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:05:53,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:53,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1029859972, now seen corresponding path program 720 times [2020-01-16 18:05:53,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:53,920 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103408093] [2020-01-16 18:05:53,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:54,126 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103408093] [2020-01-16 18:05:54,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:54,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-01-16 18:05:54,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700796843] [2020-01-16 18:05:54,126 INFO L458 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-01-16 18:05:54,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:54,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-01-16 18:05:54,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:05:54,126 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand 8 states. [2020-01-16 18:05:54,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:54,178 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2020-01-16 18:05:54,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-01-16 18:05:54,178 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-01-16 18:05:54,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:54,179 INFO L225 Difference]: With dead ends: 28 [2020-01-16 18:05:54,179 INFO L226 Difference]: Without dead ends: 0 [2020-01-16 18:05:54,179 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-01-16 18:05:54,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-01-16 18:05:54,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-01-16 18:05:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-01-16 18:05:54,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-01-16 18:05:54,180 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-01-16 18:05:54,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:54,180 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-01-16 18:05:54,180 INFO L479 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-01-16 18:05:54,180 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-01-16 18:05:54,180 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-01-16 18:05:54,184 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 06:05:54 BasicIcfg [2020-01-16 18:05:54,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 18:05:54,185 INFO L168 Benchmark]: Toolchain (without parser) took 209001.56 ms. Allocated memory was 146.8 MB in the beginning and 255.9 MB in the end (delta: 109.1 MB). Free memory was 121.9 MB in the beginning and 104.8 MB in the end (delta: 17.1 MB). Peak memory consumption was 126.2 MB. Max. memory is 7.1 GB. [2020-01-16 18:05:54,185 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 18:05:54,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.99 ms. Allocated memory is still 146.8 MB. Free memory was 121.7 MB in the beginning and 120.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-01-16 18:05:54,186 INFO L168 Benchmark]: Boogie Preprocessor took 20.54 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 118.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-01-16 18:05:54,186 INFO L168 Benchmark]: RCFGBuilder took 269.28 ms. Allocated memory is still 146.8 MB. Free memory was 118.8 MB in the beginning and 106.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-01-16 18:05:54,187 INFO L168 Benchmark]: TraceAbstraction took 208673.19 ms. Allocated memory was 146.8 MB in the beginning and 255.9 MB in the end (delta: 109.1 MB). Free memory was 106.5 MB in the beginning and 104.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 110.8 MB. Max. memory is 7.1 GB. [2020-01-16 18:05:54,189 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 33.99 ms. Allocated memory is still 146.8 MB. Free memory was 121.7 MB in the beginning and 120.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.54 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 118.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 269.28 ms. Allocated memory is still 146.8 MB. Free memory was 118.8 MB in the beginning and 106.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208673.19 ms. Allocated memory was 146.8 MB in the beginning and 255.9 MB in the end (delta: 109.1 MB). Free memory was 106.5 MB in the beginning and 104.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 110.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.3s, 52 ProgramPointsBefore, 44 ProgramPointsAfterwards, 63 TransitionsBefore, 56 TransitionsAfterwards, 780 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 210 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 225 CheckedPairsTotal, 7 TotalNumberOfCompositions - PositiveResult [Line: 25]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 208.3s, OverallIterations: 724, TraceHistogramMax: 1, AutomataDifference: 56.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 48598 SDtfs, 89022 SDslu, 114886 SDs, 0 SdLazy, 25831 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5772 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 5044 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2880 ImplicationChecksByTransitivity, 162.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=794occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 724 MinimizatonAttempts, 91280 StatesRemovedByMinimization, 714 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 142.9s InterpolantComputationTime, 13756 NumberOfCodeBlocks, 13756 NumberOfCodeBlocksAsserted, 724 NumberOfCheckSat, 13032 ConstructedInterpolants, 0 QuantifiedInterpolants, 4750668 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 724 InterpolantComputations, 724 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...