/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_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 18:02:23,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 18:02:23,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 18:02:23,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-01-16 18:02:23,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 18:02:23,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 18:02:23,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 18:02:23,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 18:02:23,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 18:02:23,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 18:02:23,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 18:02:23,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 18:02:23,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 18:02:23,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 18:02:23,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 18:02:23,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 18:02:23,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 18:02:23,456 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 18:02:23,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 18:02:23,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 18:02:23,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 18:02:23,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 18:02:23,473 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 18:02:23,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 18:02:23,474 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 18:02:23,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 18:02:23,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 18:02:23,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 18:02:23,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 18:02:23,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 18:02:23,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 18:02:23,476 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 18:02:23,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 18:02:23,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 18:02:23,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 18:02:23,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 18:02:23,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 18:02:23,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 18:02:23,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 18:02:23,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 18:02:23,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 18:02:23,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 18:02:23,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 18:02:23,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 18:02:23,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 18:02:23,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-01-16 18:02:23,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-01-16 18:02:23,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 18:02:23,759 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 18:02:23,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 18:02:23,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 18:02:23,776 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 18:02:23,777 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 18:02:23,778 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl [2020-01-16 18:02:23,778 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl' [2020-01-16 18:02:23,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 18:02:23,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 18:02:23,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 18:02:23,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 18:02:23,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 18:02:23,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:23" (1/1) ... [2020-01-16 18:02:23,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:23" (1/1) ... [2020-01-16 18:02:23,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 18:02:23,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 18:02:23,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 18:02:23,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 18:02:23,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:23" (1/1) ... [2020-01-16 18:02:23,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:23" (1/1) ... [2020-01-16 18:02:23,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:23" (1/1) ... [2020-01-16 18:02:23,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:23" (1/1) ... [2020-01-16 18:02:23,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:23" (1/1) ... [2020-01-16 18:02:23,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:23" (1/1) ... [2020-01-16 18:02:23,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:23" (1/1) ... [2020-01-16 18:02:23,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 18:02:23,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 18:02:23,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 18:02:23,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 18:02:23,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:23" (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 18:02:23,982 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 18:02:23,982 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 18:02:23,984 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 18:02:23,985 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 18:02:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 18:02:23,985 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 18:02:23,986 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 18:02:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 18:02:23,986 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 18:02:23,986 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 18:02:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 18:02:23,987 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 18:02:23,987 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 18:02:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 18:02:23,987 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 18:02:23,988 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 18:02:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 18:02:23,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 18:02:23,989 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 18:02:24,154 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 18:02:24,154 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 18:02:24,156 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 06:02:24 BoogieIcfgContainer [2020-01-16 18:02:24,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 18:02:24,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 18:02:24,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 18:02:24,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 18:02:24,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:23" (1/2) ... [2020-01-16 18:02:24,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c96025 and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 06:02:24, skipping insertion in model container [2020-01-16 18:02:24,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 06:02:24" (2/2) ... [2020-01-16 18:02:24,164 INFO L109 eAbstractionObserver]: Analyzing ICFG example_5.bpl [2020-01-16 18:02:24,173 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-01-16 18:02:24,174 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 18:02:24,181 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 18:02:24,182 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 18:02:24,274 INFO L250 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-01-16 18:02:24,296 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 18:02:24,296 INFO L375 AbstractCegarLoop]: Hoare is true [2020-01-16 18:02:24,296 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 18:02:24,296 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 18:02:24,296 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 18:02:24,297 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 18:02:24,297 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 18:02:24,297 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 18:02:24,312 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 48 transitions [2020-01-16 18:02:24,314 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions [2020-01-16 18:02:24,444 INFO L129 PetriNetUnfolder]: 49/98 cut-off events. [2020-01-16 18:02:24,445 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-01-16 18:02:24,481 INFO L76 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 98 events. 49/98 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 321 event pairs. 0/97 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2020-01-16 18:02:24,513 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions [2020-01-16 18:02:24,574 INFO L129 PetriNetUnfolder]: 49/98 cut-off events. [2020-01-16 18:02:24,575 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-01-16 18:02:24,585 INFO L76 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 98 events. 49/98 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 321 event pairs. 0/97 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2020-01-16 18:02:24,589 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 440 [2020-01-16 18:02:24,591 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-01-16 18:02:24,730 INFO L206 etLargeBlockEncoding]: Checked pairs total: 130 [2020-01-16 18:02:24,730 INFO L214 etLargeBlockEncoding]: Total number of compositions: 6 [2020-01-16 18:02:24,733 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 42 transitions [2020-01-16 18:02:24,768 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 276 states. [2020-01-16 18:02:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2020-01-16 18:02:24,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:24,787 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:24,788 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:24,788 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:24,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:24,795 INFO L82 PathProgramCache]: Analyzing trace with hash 543435427, now seen corresponding path program 1 times [2020-01-16 18:02:24,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:24,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910275597] [2020-01-16 18:02:24,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:24,953 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910275597] [2020-01-16 18:02:24,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:24,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:02:24,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591704598] [2020-01-16 18:02:24,973 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:02:24,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:24,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:02:24,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:24,991 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 3 states. [2020-01-16 18:02:25,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:25,034 INFO L93 Difference]: Finished difference Result 228 states and 684 transitions. [2020-01-16 18:02:25,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:02:25,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-01-16 18:02:25,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:25,067 INFO L225 Difference]: With dead ends: 228 [2020-01-16 18:02:25,067 INFO L226 Difference]: Without dead ends: 227 [2020-01-16 18:02:25,073 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 18:02:25,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-01-16 18:02:25,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2020-01-16 18:02:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-01-16 18:02:25,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 683 transitions. [2020-01-16 18:02:25,172 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 683 transitions. Word has length 16 [2020-01-16 18:02:25,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:25,177 INFO L478 AbstractCegarLoop]: Abstraction has 227 states and 683 transitions. [2020-01-16 18:02:25,177 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:02:25,177 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 683 transitions. [2020-01-16 18:02:25,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:25,188 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:25,188 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:25,189 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:25,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:25,189 INFO L82 PathProgramCache]: Analyzing trace with hash 867723203, now seen corresponding path program 1 times [2020-01-16 18:02:25,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:25,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885432341] [2020-01-16 18:02:25,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:25,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885432341] [2020-01-16 18:02:25,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:25,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:02:25,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911345827] [2020-01-16 18:02:25,242 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:02:25,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:25,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:02:25,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:25,247 INFO L87 Difference]: Start difference. First operand 227 states and 683 transitions. Second operand 3 states. [2020-01-16 18:02:25,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:25,275 INFO L93 Difference]: Finished difference Result 211 states and 611 transitions. [2020-01-16 18:02:25,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:02:25,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-01-16 18:02:25,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:25,281 INFO L225 Difference]: With dead ends: 211 [2020-01-16 18:02:25,281 INFO L226 Difference]: Without dead ends: 211 [2020-01-16 18:02:25,284 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 18:02:25,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-01-16 18:02:25,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-01-16 18:02:25,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-01-16 18:02:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 611 transitions. [2020-01-16 18:02:25,320 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 611 transitions. Word has length 16 [2020-01-16 18:02:25,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:25,322 INFO L478 AbstractCegarLoop]: Abstraction has 211 states and 611 transitions. [2020-01-16 18:02:25,322 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:02:25,322 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 611 transitions. [2020-01-16 18:02:25,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:25,327 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:25,330 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:25,330 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:25,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:25,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1800356309, now seen corresponding path program 1 times [2020-01-16 18:02:25,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:25,331 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026166331] [2020-01-16 18:02:25,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:25,366 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026166331] [2020-01-16 18:02:25,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:25,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:02:25,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305138492] [2020-01-16 18:02:25,367 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:02:25,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:25,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:02:25,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:25,369 INFO L87 Difference]: Start difference. First operand 211 states and 611 transitions. Second operand 3 states. [2020-01-16 18:02:25,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:25,391 INFO L93 Difference]: Finished difference Result 147 states and 391 transitions. [2020-01-16 18:02:25,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:02:25,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-01-16 18:02:25,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:25,393 INFO L225 Difference]: With dead ends: 147 [2020-01-16 18:02:25,394 INFO L226 Difference]: Without dead ends: 147 [2020-01-16 18:02:25,397 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 18:02:25,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-01-16 18:02:25,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-01-16 18:02:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-01-16 18:02:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 391 transitions. [2020-01-16 18:02:25,416 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 391 transitions. Word has length 16 [2020-01-16 18:02:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:25,417 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 391 transitions. [2020-01-16 18:02:25,417 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:02:25,417 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 391 transitions. [2020-01-16 18:02:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:25,418 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:25,419 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:25,419 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:25,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:25,420 INFO L82 PathProgramCache]: Analyzing trace with hash 536228197, now seen corresponding path program 1 times [2020-01-16 18:02:25,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:25,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45416995] [2020-01-16 18:02:25,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:25,468 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45416995] [2020-01-16 18:02:25,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:25,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:02:25,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225477392] [2020-01-16 18:02:25,469 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:02:25,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:25,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:02:25,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:25,470 INFO L87 Difference]: Start difference. First operand 147 states and 391 transitions. Second operand 3 states. [2020-01-16 18:02:25,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:25,487 INFO L93 Difference]: Finished difference Result 95 states and 241 transitions. [2020-01-16 18:02:25,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:02:25,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-01-16 18:02:25,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:25,489 INFO L225 Difference]: With dead ends: 95 [2020-01-16 18:02:25,489 INFO L226 Difference]: Without dead ends: 95 [2020-01-16 18:02:25,490 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 18:02:25,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-01-16 18:02:25,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-01-16 18:02:25,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:02:25,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 241 transitions. [2020-01-16 18:02:25,496 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 241 transitions. Word has length 16 [2020-01-16 18:02:25,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:25,496 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 241 transitions. [2020-01-16 18:02:25,497 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:02:25,497 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 241 transitions. [2020-01-16 18:02:25,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:25,498 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:25,498 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:25,498 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:25,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:25,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1934968637, now seen corresponding path program 1 times [2020-01-16 18:02:25,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:25,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043900248] [2020-01-16 18:02:25,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:25,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043900248] [2020-01-16 18:02:25,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:25,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:25,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302144152] [2020-01-16 18:02:25,827 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:25,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:25,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:25,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:25,828 INFO L87 Difference]: Start difference. First operand 95 states and 241 transitions. Second operand 7 states. [2020-01-16 18:02:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:25,900 INFO L93 Difference]: Finished difference Result 155 states and 326 transitions. [2020-01-16 18:02:25,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:25,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:25,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:25,903 INFO L225 Difference]: With dead ends: 155 [2020-01-16 18:02:25,903 INFO L226 Difference]: Without dead ends: 148 [2020-01-16 18:02:25,903 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:25,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-01-16 18:02:25,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 100. [2020-01-16 18:02:25,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-01-16 18:02:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 252 transitions. [2020-01-16 18:02:25,911 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 252 transitions. Word has length 16 [2020-01-16 18:02:25,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:25,911 INFO L478 AbstractCegarLoop]: Abstraction has 100 states and 252 transitions. [2020-01-16 18:02:25,911 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:25,911 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 252 transitions. [2020-01-16 18:02:25,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:25,912 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:25,912 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:25,913 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:25,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:25,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1391533921, now seen corresponding path program 2 times [2020-01-16 18:02:25,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:25,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870838171] [2020-01-16 18:02:25,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:26,204 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 18:02:26,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870838171] [2020-01-16 18:02:26,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:26,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:26,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422400280] [2020-01-16 18:02:26,206 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:26,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:26,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:26,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:26,207 INFO L87 Difference]: Start difference. First operand 100 states and 252 transitions. Second operand 7 states. [2020-01-16 18:02:26,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:26,276 INFO L93 Difference]: Finished difference Result 160 states and 334 transitions. [2020-01-16 18:02:26,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:26,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:26,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:26,278 INFO L225 Difference]: With dead ends: 160 [2020-01-16 18:02:26,278 INFO L226 Difference]: Without dead ends: 146 [2020-01-16 18:02:26,279 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:26,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-01-16 18:02:26,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 98. [2020-01-16 18:02:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-01-16 18:02:26,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 247 transitions. [2020-01-16 18:02:26,284 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 247 transitions. Word has length 16 [2020-01-16 18:02:26,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:26,285 INFO L478 AbstractCegarLoop]: Abstraction has 98 states and 247 transitions. [2020-01-16 18:02:26,285 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:26,285 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 247 transitions. [2020-01-16 18:02:26,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:26,286 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:26,286 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:26,286 INFO L426 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:26,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:26,287 INFO L82 PathProgramCache]: Analyzing trace with hash -870593663, now seen corresponding path program 3 times [2020-01-16 18:02:26,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:26,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349240508] [2020-01-16 18:02:26,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:26,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:26,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349240508] [2020-01-16 18:02:26,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:26,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:26,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844565566] [2020-01-16 18:02:26,514 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:26,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:26,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:26,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:26,515 INFO L87 Difference]: Start difference. First operand 98 states and 247 transitions. Second operand 7 states. [2020-01-16 18:02:26,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:26,574 INFO L93 Difference]: Finished difference Result 152 states and 319 transitions. [2020-01-16 18:02:26,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:26,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:26,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:26,576 INFO L225 Difference]: With dead ends: 152 [2020-01-16 18:02:26,576 INFO L226 Difference]: Without dead ends: 145 [2020-01-16 18:02:26,577 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:26,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-01-16 18:02:26,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 99. [2020-01-16 18:02:26,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-01-16 18:02:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 248 transitions. [2020-01-16 18:02:26,583 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 248 transitions. Word has length 16 [2020-01-16 18:02:26,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:26,583 INFO L478 AbstractCegarLoop]: Abstraction has 99 states and 248 transitions. [2020-01-16 18:02:26,583 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:26,583 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 248 transitions. [2020-01-16 18:02:26,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:26,584 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:26,584 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:26,584 INFO L426 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:26,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:26,585 INFO L82 PathProgramCache]: Analyzing trace with hash 2071878669, now seen corresponding path program 4 times [2020-01-16 18:02:26,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:26,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996266209] [2020-01-16 18:02:26,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:26,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996266209] [2020-01-16 18:02:26,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:26,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:26,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514425585] [2020-01-16 18:02:26,805 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:26,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:26,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:26,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:26,806 INFO L87 Difference]: Start difference. First operand 99 states and 248 transitions. Second operand 7 states. [2020-01-16 18:02:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:26,882 INFO L93 Difference]: Finished difference Result 155 states and 324 transitions. [2020-01-16 18:02:26,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:26,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:26,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:26,884 INFO L225 Difference]: With dead ends: 155 [2020-01-16 18:02:26,884 INFO L226 Difference]: Without dead ends: 144 [2020-01-16 18:02:26,885 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:26,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-01-16 18:02:26,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 98. [2020-01-16 18:02:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-01-16 18:02:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 246 transitions. [2020-01-16 18:02:26,890 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 246 transitions. Word has length 16 [2020-01-16 18:02:26,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:26,891 INFO L478 AbstractCegarLoop]: Abstraction has 98 states and 246 transitions. [2020-01-16 18:02:26,891 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 246 transitions. [2020-01-16 18:02:26,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:26,892 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:26,892 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:26,893 INFO L426 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:26,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:26,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1881104299, now seen corresponding path program 5 times [2020-01-16 18:02:26,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:26,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640563851] [2020-01-16 18:02:26,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:27,121 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 18:02:27,122 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640563851] [2020-01-16 18:02:27,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:27,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:27,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448461484] [2020-01-16 18:02:27,123 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:27,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:27,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:27,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:27,124 INFO L87 Difference]: Start difference. First operand 98 states and 246 transitions. Second operand 7 states. [2020-01-16 18:02:27,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:27,172 INFO L93 Difference]: Finished difference Result 167 states and 348 transitions. [2020-01-16 18:02:27,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:27,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:27,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:27,174 INFO L225 Difference]: With dead ends: 167 [2020-01-16 18:02:27,174 INFO L226 Difference]: Without dead ends: 155 [2020-01-16 18:02:27,174 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:27,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-01-16 18:02:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 104. [2020-01-16 18:02:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-01-16 18:02:27,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 255 transitions. [2020-01-16 18:02:27,180 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 255 transitions. Word has length 16 [2020-01-16 18:02:27,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:27,180 INFO L478 AbstractCegarLoop]: Abstraction has 104 states and 255 transitions. [2020-01-16 18:02:27,180 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:27,180 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 255 transitions. [2020-01-16 18:02:27,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:27,181 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:27,181 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:27,181 INFO L426 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:27,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:27,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1878970879, now seen corresponding path program 6 times [2020-01-16 18:02:27,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:27,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862739005] [2020-01-16 18:02:27,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:27,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862739005] [2020-01-16 18:02:27,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:27,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:27,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654861658] [2020-01-16 18:02:27,455 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:27,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:27,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:27,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:27,456 INFO L87 Difference]: Start difference. First operand 104 states and 255 transitions. Second operand 7 states. [2020-01-16 18:02:27,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:27,537 INFO L93 Difference]: Finished difference Result 165 states and 340 transitions. [2020-01-16 18:02:27,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:27,538 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:27,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:27,541 INFO L225 Difference]: With dead ends: 165 [2020-01-16 18:02:27,541 INFO L226 Difference]: Without dead ends: 146 [2020-01-16 18:02:27,542 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:27,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-01-16 18:02:27,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 95. [2020-01-16 18:02:27,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:02:27,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 238 transitions. [2020-01-16 18:02:27,549 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 238 transitions. Word has length 16 [2020-01-16 18:02:27,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:27,550 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 238 transitions. [2020-01-16 18:02:27,550 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:27,550 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 238 transitions. [2020-01-16 18:02:27,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:27,551 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:27,551 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:27,551 INFO L426 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:27,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:27,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1274477111, now seen corresponding path program 7 times [2020-01-16 18:02:27,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:27,552 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810961957] [2020-01-16 18:02:27,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:27,732 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810961957] [2020-01-16 18:02:27,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:27,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:27,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485282570] [2020-01-16 18:02:27,733 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:27,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:27,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:27,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:27,734 INFO L87 Difference]: Start difference. First operand 95 states and 238 transitions. Second operand 7 states. [2020-01-16 18:02:27,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:27,788 INFO L93 Difference]: Finished difference Result 151 states and 315 transitions. [2020-01-16 18:02:27,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:27,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:27,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:27,790 INFO L225 Difference]: With dead ends: 151 [2020-01-16 18:02:27,790 INFO L226 Difference]: Without dead ends: 144 [2020-01-16 18:02:27,791 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:27,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-01-16 18:02:27,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 99. [2020-01-16 18:02:27,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-01-16 18:02:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 247 transitions. [2020-01-16 18:02:27,795 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 247 transitions. Word has length 16 [2020-01-16 18:02:27,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:27,795 INFO L478 AbstractCegarLoop]: Abstraction has 99 states and 247 transitions. [2020-01-16 18:02:27,796 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:27,796 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 247 transitions. [2020-01-16 18:02:27,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:27,796 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:27,796 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:27,797 INFO L426 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:27,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:27,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1817911827, now seen corresponding path program 8 times [2020-01-16 18:02:27,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:27,797 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065644164] [2020-01-16 18:02:27,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:27,960 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 18:02:27,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065644164] [2020-01-16 18:02:27,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:27,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:27,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4545730] [2020-01-16 18:02:27,962 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:27,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:27,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:27,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:27,962 INFO L87 Difference]: Start difference. First operand 99 states and 247 transitions. Second operand 7 states. [2020-01-16 18:02:28,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:28,013 INFO L93 Difference]: Finished difference Result 156 states and 323 transitions. [2020-01-16 18:02:28,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:28,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:28,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:28,014 INFO L225 Difference]: With dead ends: 156 [2020-01-16 18:02:28,015 INFO L226 Difference]: Without dead ends: 142 [2020-01-16 18:02:28,015 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:28,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-01-16 18:02:28,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 97. [2020-01-16 18:02:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-01-16 18:02:28,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 242 transitions. [2020-01-16 18:02:28,019 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 242 transitions. Word has length 16 [2020-01-16 18:02:28,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:28,020 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 242 transitions. [2020-01-16 18:02:28,020 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:28,020 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 242 transitions. [2020-01-16 18:02:28,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:28,020 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:28,021 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:28,021 INFO L426 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:28,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:28,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1531085189, now seen corresponding path program 9 times [2020-01-16 18:02:28,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:28,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675659619] [2020-01-16 18:02:28,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:28,168 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 18:02:28,174 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675659619] [2020-01-16 18:02:28,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:28,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:28,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875368777] [2020-01-16 18:02:28,175 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:28,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:28,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:28,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:28,176 INFO L87 Difference]: Start difference. First operand 97 states and 242 transitions. Second operand 7 states. [2020-01-16 18:02:28,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:28,222 INFO L93 Difference]: Finished difference Result 147 states and 306 transitions. [2020-01-16 18:02:28,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:28,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:28,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:28,224 INFO L225 Difference]: With dead ends: 147 [2020-01-16 18:02:28,224 INFO L226 Difference]: Without dead ends: 140 [2020-01-16 18:02:28,224 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:28,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-01-16 18:02:28,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 98. [2020-01-16 18:02:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-01-16 18:02:28,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 243 transitions. [2020-01-16 18:02:28,229 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 243 transitions. Word has length 16 [2020-01-16 18:02:28,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:28,229 INFO L478 AbstractCegarLoop]: Abstraction has 98 states and 243 transitions. [2020-01-16 18:02:28,229 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 243 transitions. [2020-01-16 18:02:28,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:28,230 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:28,230 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:28,230 INFO L426 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:28,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:28,231 INFO L82 PathProgramCache]: Analyzing trace with hash 675778535, now seen corresponding path program 10 times [2020-01-16 18:02:28,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:28,231 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010141046] [2020-01-16 18:02:28,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:28,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010141046] [2020-01-16 18:02:28,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:28,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:28,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589610127] [2020-01-16 18:02:28,394 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:28,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:28,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:28,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:28,395 INFO L87 Difference]: Start difference. First operand 98 states and 243 transitions. Second operand 7 states. [2020-01-16 18:02:28,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:28,457 INFO L93 Difference]: Finished difference Result 149 states and 309 transitions. [2020-01-16 18:02:28,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:28,458 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:28,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:28,459 INFO L225 Difference]: With dead ends: 149 [2020-01-16 18:02:28,459 INFO L226 Difference]: Without dead ends: 139 [2020-01-16 18:02:28,459 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:28,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-01-16 18:02:28,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 97. [2020-01-16 18:02:28,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-01-16 18:02:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 241 transitions. [2020-01-16 18:02:28,464 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 241 transitions. Word has length 16 [2020-01-16 18:02:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:28,464 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 241 transitions. [2020-01-16 18:02:28,464 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 241 transitions. [2020-01-16 18:02:28,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:28,465 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:28,465 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:28,465 INFO L426 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:28,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:28,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1732352971, now seen corresponding path program 11 times [2020-01-16 18:02:28,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:28,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253237301] [2020-01-16 18:02:28,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:28,628 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 18:02:28,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253237301] [2020-01-16 18:02:28,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:28,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:28,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207612693] [2020-01-16 18:02:28,633 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:28,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:28,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:28,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:28,634 INFO L87 Difference]: Start difference. First operand 97 states and 241 transitions. Second operand 7 states. [2020-01-16 18:02:28,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:28,692 INFO L93 Difference]: Finished difference Result 160 states and 331 transitions. [2020-01-16 18:02:28,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:28,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:28,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:28,693 INFO L225 Difference]: With dead ends: 160 [2020-01-16 18:02:28,694 INFO L226 Difference]: Without dead ends: 148 [2020-01-16 18:02:28,696 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:28,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-01-16 18:02:28,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 101. [2020-01-16 18:02:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-01-16 18:02:28,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-01-16 18:02:28,703 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 16 [2020-01-16 18:02:28,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:28,703 INFO L478 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-01-16 18:02:28,704 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-01-16 18:02:28,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:28,710 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:28,710 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:28,711 INFO L426 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:28,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:28,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1636870967, now seen corresponding path program 12 times [2020-01-16 18:02:28,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:28,712 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699945255] [2020-01-16 18:02:28,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:28,848 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 18:02:28,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699945255] [2020-01-16 18:02:28,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:28,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:28,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303775955] [2020-01-16 18:02:28,850 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:28,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:28,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:28,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:28,851 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 7 states. [2020-01-16 18:02:28,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:28,934 INFO L93 Difference]: Finished difference Result 157 states and 322 transitions. [2020-01-16 18:02:28,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:28,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:28,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:28,936 INFO L225 Difference]: With dead ends: 157 [2020-01-16 18:02:28,936 INFO L226 Difference]: Without dead ends: 142 [2020-01-16 18:02:28,937 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:28,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-01-16 18:02:28,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 95. [2020-01-16 18:02:28,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:02:28,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 236 transitions. [2020-01-16 18:02:28,942 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 236 transitions. Word has length 16 [2020-01-16 18:02:28,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:28,942 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 236 transitions. [2020-01-16 18:02:28,942 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:28,942 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 236 transitions. [2020-01-16 18:02:28,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:28,943 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:28,943 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:28,943 INFO L426 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:28,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:28,944 INFO L82 PathProgramCache]: Analyzing trace with hash -858157495, now seen corresponding path program 13 times [2020-01-16 18:02:28,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:28,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086283281] [2020-01-16 18:02:28,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:29,108 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 18:02:29,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086283281] [2020-01-16 18:02:29,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:29,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:29,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338330361] [2020-01-16 18:02:29,110 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:29,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:29,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:29,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:29,111 INFO L87 Difference]: Start difference. First operand 95 states and 236 transitions. Second operand 7 states. [2020-01-16 18:02:29,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:29,162 INFO L93 Difference]: Finished difference Result 143 states and 298 transitions. [2020-01-16 18:02:29,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:29,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:29,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:29,165 INFO L225 Difference]: With dead ends: 143 [2020-01-16 18:02:29,165 INFO L226 Difference]: Without dead ends: 136 [2020-01-16 18:02:29,165 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:29,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-01-16 18:02:29,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2020-01-16 18:02:29,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-01-16 18:02:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 240 transitions. [2020-01-16 18:02:29,171 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 240 transitions. Word has length 16 [2020-01-16 18:02:29,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:29,171 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 240 transitions. [2020-01-16 18:02:29,171 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 240 transitions. [2020-01-16 18:02:29,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:29,174 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:29,175 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:29,175 INFO L426 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:29,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:29,175 INFO L82 PathProgramCache]: Analyzing trace with hash 2084314837, now seen corresponding path program 14 times [2020-01-16 18:02:29,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:29,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770544932] [2020-01-16 18:02:29,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:29,354 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 18:02:29,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770544932] [2020-01-16 18:02:29,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:29,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:29,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398681845] [2020-01-16 18:02:29,356 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:29,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:29,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:29,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:29,357 INFO L87 Difference]: Start difference. First operand 97 states and 240 transitions. Second operand 7 states. [2020-01-16 18:02:29,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:29,434 INFO L93 Difference]: Finished difference Result 146 states and 303 transitions. [2020-01-16 18:02:29,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:29,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:29,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:29,436 INFO L225 Difference]: With dead ends: 146 [2020-01-16 18:02:29,436 INFO L226 Difference]: Without dead ends: 135 [2020-01-16 18:02:29,437 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:29,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-01-16 18:02:29,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 96. [2020-01-16 18:02:29,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-01-16 18:02:29,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2020-01-16 18:02:29,450 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 16 [2020-01-16 18:02:29,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:29,450 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2020-01-16 18:02:29,450 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:29,450 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2020-01-16 18:02:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:29,453 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:29,453 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:29,454 INFO L426 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:29,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:29,454 INFO L82 PathProgramCache]: Analyzing trace with hash 457999809, now seen corresponding path program 15 times [2020-01-16 18:02:29,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:29,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763580962] [2020-01-16 18:02:29,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:29,633 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 18:02:29,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763580962] [2020-01-16 18:02:29,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:29,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:29,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78979461] [2020-01-16 18:02:29,634 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:29,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:29,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:29,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:29,635 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 7 states. [2020-01-16 18:02:29,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:29,690 INFO L93 Difference]: Finished difference Result 142 states and 295 transitions. [2020-01-16 18:02:29,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:29,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:29,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:29,692 INFO L225 Difference]: With dead ends: 142 [2020-01-16 18:02:29,692 INFO L226 Difference]: Without dead ends: 135 [2020-01-16 18:02:29,692 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:29,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-01-16 18:02:29,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 97. [2020-01-16 18:02:29,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-01-16 18:02:29,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions. [2020-01-16 18:02:29,699 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 16 [2020-01-16 18:02:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:29,699 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 239 transitions. [2020-01-16 18:02:29,699 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions. [2020-01-16 18:02:29,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:29,700 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:29,700 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:29,700 INFO L426 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:29,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:29,701 INFO L82 PathProgramCache]: Analyzing trace with hash -397306845, now seen corresponding path program 16 times [2020-01-16 18:02:29,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:29,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205430579] [2020-01-16 18:02:29,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:29,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205430579] [2020-01-16 18:02:29,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:29,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:29,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178981429] [2020-01-16 18:02:29,845 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:29,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:29,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:29,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:29,846 INFO L87 Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 7 states. [2020-01-16 18:02:29,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:29,917 INFO L93 Difference]: Finished difference Result 144 states and 298 transitions. [2020-01-16 18:02:29,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:29,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:29,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:29,919 INFO L225 Difference]: With dead ends: 144 [2020-01-16 18:02:29,919 INFO L226 Difference]: Without dead ends: 134 [2020-01-16 18:02:29,920 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:29,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-01-16 18:02:29,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 96. [2020-01-16 18:02:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-01-16 18:02:29,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 237 transitions. [2020-01-16 18:02:29,924 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 237 transitions. Word has length 16 [2020-01-16 18:02:29,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:29,924 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 237 transitions. [2020-01-16 18:02:29,924 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:29,925 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 237 transitions. [2020-01-16 18:02:29,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:29,925 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:29,925 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:29,926 INFO L426 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:29,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:29,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1339612339, now seen corresponding path program 17 times [2020-01-16 18:02:29,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:29,926 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104036264] [2020-01-16 18:02:29,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:30,067 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 18:02:30,068 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104036264] [2020-01-16 18:02:30,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:30,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:30,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328807065] [2020-01-16 18:02:30,069 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:30,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:30,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:30,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:30,070 INFO L87 Difference]: Start difference. First operand 96 states and 237 transitions. Second operand 7 states. [2020-01-16 18:02:30,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:30,128 INFO L93 Difference]: Finished difference Result 150 states and 312 transitions. [2020-01-16 18:02:30,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:30,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:30,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:30,129 INFO L225 Difference]: With dead ends: 150 [2020-01-16 18:02:30,129 INFO L226 Difference]: Without dead ends: 140 [2020-01-16 18:02:30,129 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:30,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-01-16 18:02:30,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 99. [2020-01-16 18:02:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-01-16 18:02:30,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 242 transitions. [2020-01-16 18:02:30,134 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 242 transitions. Word has length 16 [2020-01-16 18:02:30,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:30,134 INFO L478 AbstractCegarLoop]: Abstraction has 99 states and 242 transitions. [2020-01-16 18:02:30,134 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:30,134 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 242 transitions. [2020-01-16 18:02:30,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:30,135 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:30,135 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:30,135 INFO L426 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:30,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:30,136 INFO L82 PathProgramCache]: Analyzing trace with hash -2087156279, now seen corresponding path program 18 times [2020-01-16 18:02:30,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:30,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75018775] [2020-01-16 18:02:30,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:30,303 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 18:02:30,304 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75018775] [2020-01-16 18:02:30,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:30,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:30,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977221787] [2020-01-16 18:02:30,305 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:30,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:30,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:30,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:30,305 INFO L87 Difference]: Start difference. First operand 99 states and 242 transitions. Second operand 7 states. [2020-01-16 18:02:30,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:30,373 INFO L93 Difference]: Finished difference Result 149 states and 307 transitions. [2020-01-16 18:02:30,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:30,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:30,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:30,375 INFO L225 Difference]: With dead ends: 149 [2020-01-16 18:02:30,375 INFO L226 Difference]: Without dead ends: 136 [2020-01-16 18:02:30,375 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:30,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-01-16 18:02:30,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 95. [2020-01-16 18:02:30,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:02:30,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 235 transitions. [2020-01-16 18:02:30,380 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 235 transitions. Word has length 16 [2020-01-16 18:02:30,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:30,381 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 235 transitions. [2020-01-16 18:02:30,381 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 235 transitions. [2020-01-16 18:02:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:30,381 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:30,382 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:30,382 INFO L426 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:30,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:30,382 INFO L82 PathProgramCache]: Analyzing trace with hash -257727173, now seen corresponding path program 19 times [2020-01-16 18:02:30,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:30,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389024542] [2020-01-16 18:02:30,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:30,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389024542] [2020-01-16 18:02:30,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:30,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:30,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667210748] [2020-01-16 18:02:30,575 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:30,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:30,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:30,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:30,576 INFO L87 Difference]: Start difference. First operand 95 states and 235 transitions. Second operand 7 states. [2020-01-16 18:02:30,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:30,624 INFO L93 Difference]: Finished difference Result 176 states and 370 transitions. [2020-01-16 18:02:30,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:30,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:30,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:30,626 INFO L225 Difference]: With dead ends: 176 [2020-01-16 18:02:30,626 INFO L226 Difference]: Without dead ends: 164 [2020-01-16 18:02:30,626 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:30,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-01-16 18:02:30,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 107. [2020-01-16 18:02:30,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-01-16 18:02:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 261 transitions. [2020-01-16 18:02:30,631 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 261 transitions. Word has length 16 [2020-01-16 18:02:30,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:30,632 INFO L478 AbstractCegarLoop]: Abstraction has 107 states and 261 transitions. [2020-01-16 18:02:30,632 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:30,632 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 261 transitions. [2020-01-16 18:02:30,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:30,633 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:30,633 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:30,633 INFO L426 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:30,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:30,633 INFO L82 PathProgramCache]: Analyzing trace with hash -255593753, now seen corresponding path program 20 times [2020-01-16 18:02:30,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:30,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047608903] [2020-01-16 18:02:30,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:30,776 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 18:02:30,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047608903] [2020-01-16 18:02:30,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:30,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:30,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979964377] [2020-01-16 18:02:30,777 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:30,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:30,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:30,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:30,778 INFO L87 Difference]: Start difference. First operand 107 states and 261 transitions. Second operand 7 states. [2020-01-16 18:02:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:30,837 INFO L93 Difference]: Finished difference Result 174 states and 362 transitions. [2020-01-16 18:02:30,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:30,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:30,839 INFO L225 Difference]: With dead ends: 174 [2020-01-16 18:02:30,839 INFO L226 Difference]: Without dead ends: 158 [2020-01-16 18:02:30,840 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:30,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-01-16 18:02:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 101. [2020-01-16 18:02:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-01-16 18:02:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-01-16 18:02:30,844 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 16 [2020-01-16 18:02:30,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:30,844 INFO L478 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-01-16 18:02:30,844 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:30,845 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-01-16 18:02:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:30,845 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:30,845 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:30,845 INFO L426 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:30,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:30,846 INFO L82 PathProgramCache]: Analyzing trace with hash 886628069, now seen corresponding path program 21 times [2020-01-16 18:02:30,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:30,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070759574] [2020-01-16 18:02:30,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:30,995 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 18:02:30,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070759574] [2020-01-16 18:02:30,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:30,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:30,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220241701] [2020-01-16 18:02:30,997 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:30,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:30,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:30,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:30,997 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 7 states. [2020-01-16 18:02:31,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:31,061 INFO L93 Difference]: Finished difference Result 173 states and 359 transitions. [2020-01-16 18:02:31,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:31,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:31,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:31,062 INFO L225 Difference]: With dead ends: 173 [2020-01-16 18:02:31,062 INFO L226 Difference]: Without dead ends: 161 [2020-01-16 18:02:31,062 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:31,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-01-16 18:02:31,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 105. [2020-01-16 18:02:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-01-16 18:02:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 253 transitions. [2020-01-16 18:02:31,067 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 253 transitions. Word has length 16 [2020-01-16 18:02:31,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:31,067 INFO L478 AbstractCegarLoop]: Abstraction has 105 states and 253 transitions. [2020-01-16 18:02:31,067 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:31,068 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 253 transitions. [2020-01-16 18:02:31,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:31,068 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:31,068 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:31,069 INFO L426 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:31,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:31,069 INFO L82 PathProgramCache]: Analyzing trace with hash 847649909, now seen corresponding path program 22 times [2020-01-16 18:02:31,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:31,069 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082563622] [2020-01-16 18:02:31,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:31,237 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 18:02:31,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082563622] [2020-01-16 18:02:31,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:31,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:31,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946449011] [2020-01-16 18:02:31,238 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:31,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:31,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:31,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:31,239 INFO L87 Difference]: Start difference. First operand 105 states and 253 transitions. Second operand 7 states. [2020-01-16 18:02:31,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:31,313 INFO L93 Difference]: Finished difference Result 170 states and 350 transitions. [2020-01-16 18:02:31,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:31,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:31,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:31,314 INFO L225 Difference]: With dead ends: 170 [2020-01-16 18:02:31,314 INFO L226 Difference]: Without dead ends: 157 [2020-01-16 18:02:31,315 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:31,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-01-16 18:02:31,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 101. [2020-01-16 18:02:31,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-01-16 18:02:31,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 243 transitions. [2020-01-16 18:02:31,320 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 243 transitions. Word has length 16 [2020-01-16 18:02:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:31,320 INFO L478 AbstractCegarLoop]: Abstraction has 101 states and 243 transitions. [2020-01-16 18:02:31,320 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 243 transitions. [2020-01-16 18:02:31,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:31,321 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:31,321 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:31,323 INFO L426 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:31,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:31,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1633045487, now seen corresponding path program 23 times [2020-01-16 18:02:31,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:31,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550136882] [2020-01-16 18:02:31,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:31,493 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 18:02:31,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550136882] [2020-01-16 18:02:31,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:31,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:31,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369121285] [2020-01-16 18:02:31,494 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:31,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:31,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:31,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:31,495 INFO L87 Difference]: Start difference. First operand 101 states and 243 transitions. Second operand 7 states. [2020-01-16 18:02:31,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:31,575 INFO L93 Difference]: Finished difference Result 168 states and 347 transitions. [2020-01-16 18:02:31,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:31,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:31,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:31,577 INFO L225 Difference]: With dead ends: 168 [2020-01-16 18:02:31,577 INFO L226 Difference]: Without dead ends: 158 [2020-01-16 18:02:31,577 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:31,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-01-16 18:02:31,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 104. [2020-01-16 18:02:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-01-16 18:02:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 248 transitions. [2020-01-16 18:02:31,584 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 248 transitions. Word has length 16 [2020-01-16 18:02:31,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:31,584 INFO L478 AbstractCegarLoop]: Abstraction has 104 states and 248 transitions. [2020-01-16 18:02:31,584 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 248 transitions. [2020-01-16 18:02:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:31,585 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:31,585 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:31,586 INFO L426 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:31,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:31,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1729568327, now seen corresponding path program 24 times [2020-01-16 18:02:31,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:31,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101136839] [2020-01-16 18:02:31,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:31,733 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101136839] [2020-01-16 18:02:31,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:31,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:31,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681599873] [2020-01-16 18:02:31,734 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:31,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:31,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:31,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:31,735 INFO L87 Difference]: Start difference. First operand 104 states and 248 transitions. Second operand 7 states. [2020-01-16 18:02:31,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:31,799 INFO L93 Difference]: Finished difference Result 167 states and 342 transitions. [2020-01-16 18:02:31,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:31,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:31,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:31,800 INFO L225 Difference]: With dead ends: 167 [2020-01-16 18:02:31,801 INFO L226 Difference]: Without dead ends: 145 [2020-01-16 18:02:31,801 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:31,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-01-16 18:02:31,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 91. [2020-01-16 18:02:31,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:02:31,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 224 transitions. [2020-01-16 18:02:31,805 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 224 transitions. Word has length 16 [2020-01-16 18:02:31,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:31,805 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 224 transitions. [2020-01-16 18:02:31,805 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:31,806 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 224 transitions. [2020-01-16 18:02:31,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:31,806 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:31,806 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:31,806 INFO L426 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:31,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:31,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1892241251, now seen corresponding path program 25 times [2020-01-16 18:02:31,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:31,807 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235002571] [2020-01-16 18:02:31,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:31,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235002571] [2020-01-16 18:02:31,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:31,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:31,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64717915] [2020-01-16 18:02:31,983 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:31,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:31,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:31,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:31,984 INFO L87 Difference]: Start difference. First operand 91 states and 224 transitions. Second operand 7 states. [2020-01-16 18:02:32,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:32,050 INFO L93 Difference]: Finished difference Result 148 states and 301 transitions. [2020-01-16 18:02:32,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:32,050 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:32,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:32,051 INFO L225 Difference]: With dead ends: 148 [2020-01-16 18:02:32,051 INFO L226 Difference]: Without dead ends: 141 [2020-01-16 18:02:32,052 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:32,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-01-16 18:02:32,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2020-01-16 18:02:32,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-01-16 18:02:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 227 transitions. [2020-01-16 18:02:32,055 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 227 transitions. Word has length 16 [2020-01-16 18:02:32,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:32,056 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 227 transitions. [2020-01-16 18:02:32,056 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:32,056 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 227 transitions. [2020-01-16 18:02:32,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:32,056 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:32,057 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:32,057 INFO L426 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:32,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:32,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1348806535, now seen corresponding path program 26 times [2020-01-16 18:02:32,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:32,057 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003143250] [2020-01-16 18:02:32,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:32,225 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 18:02:32,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003143250] [2020-01-16 18:02:32,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:32,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:32,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938335331] [2020-01-16 18:02:32,226 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:32,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:32,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:32,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:32,227 INFO L87 Difference]: Start difference. First operand 93 states and 227 transitions. Second operand 7 states. [2020-01-16 18:02:32,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:32,284 INFO L93 Difference]: Finished difference Result 153 states and 309 transitions. [2020-01-16 18:02:32,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:32,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:32,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:32,286 INFO L225 Difference]: With dead ends: 153 [2020-01-16 18:02:32,286 INFO L226 Difference]: Without dead ends: 139 [2020-01-16 18:02:32,287 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:32,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-01-16 18:02:32,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 91. [2020-01-16 18:02:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:02:32,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 222 transitions. [2020-01-16 18:02:32,291 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 222 transitions. Word has length 16 [2020-01-16 18:02:32,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:32,292 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 222 transitions. [2020-01-16 18:02:32,292 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:32,292 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 222 transitions. [2020-01-16 18:02:32,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:32,293 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:32,293 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:32,293 INFO L426 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:32,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:32,293 INFO L82 PathProgramCache]: Analyzing trace with hash -913321049, now seen corresponding path program 27 times [2020-01-16 18:02:32,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:32,294 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631255815] [2020-01-16 18:02:32,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:32,476 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 18:02:32,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631255815] [2020-01-16 18:02:32,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:32,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:32,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158817635] [2020-01-16 18:02:32,477 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:32,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:32,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:32,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:32,478 INFO L87 Difference]: Start difference. First operand 91 states and 222 transitions. Second operand 7 states. [2020-01-16 18:02:32,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:32,538 INFO L93 Difference]: Finished difference Result 145 states and 294 transitions. [2020-01-16 18:02:32,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:32,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:32,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:32,540 INFO L225 Difference]: With dead ends: 145 [2020-01-16 18:02:32,540 INFO L226 Difference]: Without dead ends: 138 [2020-01-16 18:02:32,541 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:32,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-01-16 18:02:32,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 92. [2020-01-16 18:02:32,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:02:32,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 223 transitions. [2020-01-16 18:02:32,545 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 223 transitions. Word has length 16 [2020-01-16 18:02:32,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:32,546 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 223 transitions. [2020-01-16 18:02:32,546 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:32,546 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 223 transitions. [2020-01-16 18:02:32,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:32,546 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:32,547 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:32,547 INFO L426 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:32,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:32,547 INFO L82 PathProgramCache]: Analyzing trace with hash 2029151283, now seen corresponding path program 28 times [2020-01-16 18:02:32,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:32,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594513552] [2020-01-16 18:02:32,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:32,689 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 18:02:32,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594513552] [2020-01-16 18:02:32,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:32,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:32,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998070775] [2020-01-16 18:02:32,691 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:32,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:32,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:32,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:32,692 INFO L87 Difference]: Start difference. First operand 92 states and 223 transitions. Second operand 7 states. [2020-01-16 18:02:32,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:32,744 INFO L93 Difference]: Finished difference Result 148 states and 299 transitions. [2020-01-16 18:02:32,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:32,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:32,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:32,745 INFO L225 Difference]: With dead ends: 148 [2020-01-16 18:02:32,745 INFO L226 Difference]: Without dead ends: 137 [2020-01-16 18:02:32,746 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:32,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-01-16 18:02:32,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 91. [2020-01-16 18:02:32,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:02:32,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 221 transitions. [2020-01-16 18:02:32,749 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 221 transitions. Word has length 16 [2020-01-16 18:02:32,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:32,749 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 221 transitions. [2020-01-16 18:02:32,750 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:32,750 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 221 transitions. [2020-01-16 18:02:32,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:32,750 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:32,750 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:32,750 INFO L426 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:32,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:32,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1923831685, now seen corresponding path program 29 times [2020-01-16 18:02:32,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:32,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653356411] [2020-01-16 18:02:32,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:32,914 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 18:02:32,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653356411] [2020-01-16 18:02:32,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:32,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:32,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370741884] [2020-01-16 18:02:32,915 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:32,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:32,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:32,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:32,916 INFO L87 Difference]: Start difference. First operand 91 states and 221 transitions. Second operand 7 states. [2020-01-16 18:02:32,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:32,963 INFO L93 Difference]: Finished difference Result 160 states and 323 transitions. [2020-01-16 18:02:32,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:32,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:32,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:32,965 INFO L225 Difference]: With dead ends: 160 [2020-01-16 18:02:32,965 INFO L226 Difference]: Without dead ends: 148 [2020-01-16 18:02:32,966 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-01-16 18:02:32,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 97. [2020-01-16 18:02:32,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-01-16 18:02:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 230 transitions. [2020-01-16 18:02:32,969 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 230 transitions. Word has length 16 [2020-01-16 18:02:32,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:32,969 INFO L478 AbstractCegarLoop]: Abstraction has 97 states and 230 transitions. [2020-01-16 18:02:32,969 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 230 transitions. [2020-01-16 18:02:32,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:32,970 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:32,970 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:32,970 INFO L426 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:32,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:32,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1921698265, now seen corresponding path program 30 times [2020-01-16 18:02:32,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:32,971 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564610789] [2020-01-16 18:02:32,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:33,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564610789] [2020-01-16 18:02:33,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:33,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:33,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78869617] [2020-01-16 18:02:33,123 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:33,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:33,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:33,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:33,124 INFO L87 Difference]: Start difference. First operand 97 states and 230 transitions. Second operand 7 states. [2020-01-16 18:02:33,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:33,182 INFO L93 Difference]: Finished difference Result 158 states and 315 transitions. [2020-01-16 18:02:33,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:33,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:33,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:33,183 INFO L225 Difference]: With dead ends: 158 [2020-01-16 18:02:33,183 INFO L226 Difference]: Without dead ends: 139 [2020-01-16 18:02:33,184 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:33,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-01-16 18:02:33,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 88. [2020-01-16 18:02:33,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:02:33,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 213 transitions. [2020-01-16 18:02:33,187 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 213 transitions. Word has length 16 [2020-01-16 18:02:33,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:33,187 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 213 transitions. [2020-01-16 18:02:33,187 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:33,187 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 213 transitions. [2020-01-16 18:02:33,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:33,188 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:33,188 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:33,188 INFO L426 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:33,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:33,188 INFO L82 PathProgramCache]: Analyzing trace with hash -224453179, now seen corresponding path program 31 times [2020-01-16 18:02:33,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:33,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423028362] [2020-01-16 18:02:33,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:33,346 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 18:02:33,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423028362] [2020-01-16 18:02:33,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:33,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:33,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47501406] [2020-01-16 18:02:33,347 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:33,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:33,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:33,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:33,348 INFO L87 Difference]: Start difference. First operand 88 states and 213 transitions. Second operand 7 states. [2020-01-16 18:02:33,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:33,396 INFO L93 Difference]: Finished difference Result 140 states and 281 transitions. [2020-01-16 18:02:33,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:33,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:33,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:33,398 INFO L225 Difference]: With dead ends: 140 [2020-01-16 18:02:33,398 INFO L226 Difference]: Without dead ends: 133 [2020-01-16 18:02:33,398 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:33,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-01-16 18:02:33,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 92. [2020-01-16 18:02:33,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:02:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 222 transitions. [2020-01-16 18:02:33,402 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 222 transitions. Word has length 16 [2020-01-16 18:02:33,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:33,403 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 222 transitions. [2020-01-16 18:02:33,403 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:33,403 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 222 transitions. [2020-01-16 18:02:33,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:33,403 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:33,404 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:33,404 INFO L426 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:33,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:33,404 INFO L82 PathProgramCache]: Analyzing trace with hash -767887895, now seen corresponding path program 32 times [2020-01-16 18:02:33,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:33,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140032560] [2020-01-16 18:02:33,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:33,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140032560] [2020-01-16 18:02:33,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:33,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:33,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583205499] [2020-01-16 18:02:33,575 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:33,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:33,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:33,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:33,575 INFO L87 Difference]: Start difference. First operand 92 states and 222 transitions. Second operand 7 states. [2020-01-16 18:02:33,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:33,653 INFO L93 Difference]: Finished difference Result 145 states and 289 transitions. [2020-01-16 18:02:33,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:33,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:33,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:33,654 INFO L225 Difference]: With dead ends: 145 [2020-01-16 18:02:33,654 INFO L226 Difference]: Without dead ends: 131 [2020-01-16 18:02:33,655 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:33,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-01-16 18:02:33,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 90. [2020-01-16 18:02:33,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:02:33,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 217 transitions. [2020-01-16 18:02:33,659 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 217 transitions. Word has length 16 [2020-01-16 18:02:33,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:33,659 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 217 transitions. [2020-01-16 18:02:33,659 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:33,659 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 217 transitions. [2020-01-16 18:02:33,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:33,660 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:33,660 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:33,660 INFO L426 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:33,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:33,660 INFO L82 PathProgramCache]: Analyzing trace with hash 2009654315, now seen corresponding path program 33 times [2020-01-16 18:02:33,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:33,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423864053] [2020-01-16 18:02:33,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:33,810 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 18:02:33,811 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423864053] [2020-01-16 18:02:33,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:33,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:33,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908935298] [2020-01-16 18:02:33,812 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:33,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:33,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:33,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:33,813 INFO L87 Difference]: Start difference. First operand 90 states and 217 transitions. Second operand 7 states. [2020-01-16 18:02:33,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:33,875 INFO L93 Difference]: Finished difference Result 134 states and 269 transitions. [2020-01-16 18:02:33,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:33,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:33,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:33,876 INFO L225 Difference]: With dead ends: 134 [2020-01-16 18:02:33,876 INFO L226 Difference]: Without dead ends: 127 [2020-01-16 18:02:33,877 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:33,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-01-16 18:02:33,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 91. [2020-01-16 18:02:33,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:02:33,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 218 transitions. [2020-01-16 18:02:33,880 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 218 transitions. Word has length 16 [2020-01-16 18:02:33,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:33,880 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 218 transitions. [2020-01-16 18:02:33,880 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:33,880 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 218 transitions. [2020-01-16 18:02:33,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:33,881 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:33,881 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:33,881 INFO L426 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:33,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:33,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1438331371, now seen corresponding path program 34 times [2020-01-16 18:02:33,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:33,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808368856] [2020-01-16 18:02:33,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:34,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808368856] [2020-01-16 18:02:34,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:34,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:34,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071222490] [2020-01-16 18:02:34,061 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:34,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:34,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:34,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:34,062 INFO L87 Difference]: Start difference. First operand 91 states and 218 transitions. Second operand 7 states. [2020-01-16 18:02:34,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:34,118 INFO L93 Difference]: Finished difference Result 128 states and 264 transitions. [2020-01-16 18:02:34,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:34,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:34,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:34,119 INFO L225 Difference]: With dead ends: 128 [2020-01-16 18:02:34,119 INFO L226 Difference]: Without dead ends: 119 [2020-01-16 18:02:34,120 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-01-16 18:02:34,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 90. [2020-01-16 18:02:34,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:02:34,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 216 transitions. [2020-01-16 18:02:34,123 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 216 transitions. Word has length 16 [2020-01-16 18:02:34,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:34,123 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 216 transitions. [2020-01-16 18:02:34,123 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:34,123 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 216 transitions. [2020-01-16 18:02:34,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:34,124 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:34,124 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:34,124 INFO L426 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:34,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:34,125 INFO L82 PathProgramCache]: Analyzing trace with hash -281261761, now seen corresponding path program 35 times [2020-01-16 18:02:34,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:34,125 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77192474] [2020-01-16 18:02:34,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:34,296 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77192474] [2020-01-16 18:02:34,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:34,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:34,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466412597] [2020-01-16 18:02:34,297 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:34,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:34,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:34,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:34,298 INFO L87 Difference]: Start difference. First operand 90 states and 216 transitions. Second operand 7 states. [2020-01-16 18:02:34,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:34,365 INFO L93 Difference]: Finished difference Result 141 states and 282 transitions. [2020-01-16 18:02:34,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:34,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:34,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:34,373 INFO L225 Difference]: With dead ends: 141 [2020-01-16 18:02:34,373 INFO L226 Difference]: Without dead ends: 129 [2020-01-16 18:02:34,373 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:34,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-01-16 18:02:34,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 93. [2020-01-16 18:02:34,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-01-16 18:02:34,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 220 transitions. [2020-01-16 18:02:34,376 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 220 transitions. Word has length 16 [2020-01-16 18:02:34,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:34,377 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 220 transitions. [2020-01-16 18:02:34,377 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:34,377 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 220 transitions. [2020-01-16 18:02:34,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:34,377 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:34,377 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:34,377 INFO L426 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:34,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:34,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1456765397, now seen corresponding path program 36 times [2020-01-16 18:02:34,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:34,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353071561] [2020-01-16 18:02:34,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:34,558 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 18:02:34,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353071561] [2020-01-16 18:02:34,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:34,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:34,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307842632] [2020-01-16 18:02:34,560 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:34,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:34,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:34,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:34,561 INFO L87 Difference]: Start difference. First operand 93 states and 220 transitions. Second operand 7 states. [2020-01-16 18:02:34,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:34,641 INFO L93 Difference]: Finished difference Result 130 states and 266 transitions. [2020-01-16 18:02:34,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:34,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:34,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:34,643 INFO L225 Difference]: With dead ends: 130 [2020-01-16 18:02:34,643 INFO L226 Difference]: Without dead ends: 117 [2020-01-16 18:02:34,643 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:34,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-01-16 18:02:34,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-01-16 18:02:34,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:02:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 211 transitions. [2020-01-16 18:02:34,646 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 211 transitions. Word has length 16 [2020-01-16 18:02:34,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:34,648 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 211 transitions. [2020-01-16 18:02:34,648 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 211 transitions. [2020-01-16 18:02:34,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:34,648 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:34,649 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:34,649 INFO L426 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:34,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:34,649 INFO L82 PathProgramCache]: Analyzing trace with hash 191866437, now seen corresponding path program 37 times [2020-01-16 18:02:34,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:34,649 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794090881] [2020-01-16 18:02:34,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:34,823 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 18:02:34,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794090881] [2020-01-16 18:02:34,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:34,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:34,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377149549] [2020-01-16 18:02:34,824 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:34,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:34,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:34,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:34,825 INFO L87 Difference]: Start difference. First operand 88 states and 211 transitions. Second operand 7 states. [2020-01-16 18:02:34,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:34,872 INFO L93 Difference]: Finished difference Result 133 states and 266 transitions. [2020-01-16 18:02:34,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:34,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:34,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:34,874 INFO L225 Difference]: With dead ends: 133 [2020-01-16 18:02:34,874 INFO L226 Difference]: Without dead ends: 126 [2020-01-16 18:02:34,875 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:34,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-01-16 18:02:34,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 90. [2020-01-16 18:02:34,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:02:34,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 215 transitions. [2020-01-16 18:02:34,878 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 215 transitions. Word has length 16 [2020-01-16 18:02:34,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:34,878 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 215 transitions. [2020-01-16 18:02:34,878 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:34,879 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 215 transitions. [2020-01-16 18:02:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:34,879 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:34,879 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:34,879 INFO L426 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:34,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:34,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1160628527, now seen corresponding path program 38 times [2020-01-16 18:02:34,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:34,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095620154] [2020-01-16 18:02:34,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:35,017 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095620154] [2020-01-16 18:02:35,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:35,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:35,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669887413] [2020-01-16 18:02:35,018 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:35,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:35,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:35,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:35,018 INFO L87 Difference]: Start difference. First operand 90 states and 215 transitions. Second operand 7 states. [2020-01-16 18:02:35,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:35,095 INFO L93 Difference]: Finished difference Result 136 states and 271 transitions. [2020-01-16 18:02:35,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:35,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:35,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:35,097 INFO L225 Difference]: With dead ends: 136 [2020-01-16 18:02:35,097 INFO L226 Difference]: Without dead ends: 125 [2020-01-16 18:02:35,097 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:35,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-01-16 18:02:35,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 89. [2020-01-16 18:02:35,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-01-16 18:02:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 213 transitions. [2020-01-16 18:02:35,100 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 213 transitions. Word has length 16 [2020-01-16 18:02:35,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:35,101 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 213 transitions. [2020-01-16 18:02:35,101 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:35,101 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 213 transitions. [2020-01-16 18:02:35,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:35,101 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:35,101 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:35,102 INFO L426 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:35,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:35,102 INFO L82 PathProgramCache]: Analyzing trace with hash 936568935, now seen corresponding path program 39 times [2020-01-16 18:02:35,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:35,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912628743] [2020-01-16 18:02:35,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:35,248 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912628743] [2020-01-16 18:02:35,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:35,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:35,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218644672] [2020-01-16 18:02:35,249 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:35,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:35,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:35,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:35,250 INFO L87 Difference]: Start difference. First operand 89 states and 213 transitions. Second operand 7 states. [2020-01-16 18:02:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:35,295 INFO L93 Difference]: Finished difference Result 130 states and 260 transitions. [2020-01-16 18:02:35,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:35,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:35,296 INFO L225 Difference]: With dead ends: 130 [2020-01-16 18:02:35,296 INFO L226 Difference]: Without dead ends: 123 [2020-01-16 18:02:35,297 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:35,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-01-16 18:02:35,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 90. [2020-01-16 18:02:35,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-01-16 18:02:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 214 transitions. [2020-01-16 18:02:35,299 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 214 transitions. Word has length 16 [2020-01-16 18:02:35,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:35,300 INFO L478 AbstractCegarLoop]: Abstraction has 90 states and 214 transitions. [2020-01-16 18:02:35,301 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:35,301 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 214 transitions. [2020-01-16 18:02:35,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:35,302 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:35,302 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:35,302 INFO L426 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:35,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:35,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1783550545, now seen corresponding path program 40 times [2020-01-16 18:02:35,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:35,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122301766] [2020-01-16 18:02:35,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:35,461 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122301766] [2020-01-16 18:02:35,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:35,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:35,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773598387] [2020-01-16 18:02:35,462 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:35,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:35,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:35,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:35,463 INFO L87 Difference]: Start difference. First operand 90 states and 214 transitions. Second operand 7 states. [2020-01-16 18:02:35,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:35,529 INFO L93 Difference]: Finished difference Result 124 states and 255 transitions. [2020-01-16 18:02:35,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:35,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:35,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:35,530 INFO L225 Difference]: With dead ends: 124 [2020-01-16 18:02:35,530 INFO L226 Difference]: Without dead ends: 115 [2020-01-16 18:02:35,531 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:35,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-01-16 18:02:35,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2020-01-16 18:02:35,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-01-16 18:02:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 212 transitions. [2020-01-16 18:02:35,534 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 212 transitions. Word has length 16 [2020-01-16 18:02:35,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:35,535 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 212 transitions. [2020-01-16 18:02:35,535 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:35,535 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 212 transitions. [2020-01-16 18:02:35,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:35,535 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:35,536 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:35,536 INFO L426 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:35,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:35,536 INFO L82 PathProgramCache]: Analyzing trace with hash -674002393, now seen corresponding path program 41 times [2020-01-16 18:02:35,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:35,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584880029] [2020-01-16 18:02:35,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:35,670 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 18:02:35,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584880029] [2020-01-16 18:02:35,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:35,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:35,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215017648] [2020-01-16 18:02:35,671 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:35,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:35,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:35,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:35,672 INFO L87 Difference]: Start difference. First operand 89 states and 212 transitions. Second operand 7 states. [2020-01-16 18:02:35,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:35,746 INFO L93 Difference]: Finished difference Result 134 states and 268 transitions. [2020-01-16 18:02:35,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:35,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:35,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:35,748 INFO L225 Difference]: With dead ends: 134 [2020-01-16 18:02:35,748 INFO L226 Difference]: Without dead ends: 124 [2020-01-16 18:02:35,749 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:35,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-01-16 18:02:35,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 91. [2020-01-16 18:02:35,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-01-16 18:02:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 215 transitions. [2020-01-16 18:02:35,753 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 215 transitions. Word has length 16 [2020-01-16 18:02:35,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:35,754 INFO L478 AbstractCegarLoop]: Abstraction has 91 states and 215 transitions. [2020-01-16 18:02:35,754 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:35,754 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 215 transitions. [2020-01-16 18:02:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:35,754 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:35,755 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:35,755 INFO L426 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:35,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:35,755 INFO L82 PathProgramCache]: Analyzing trace with hash 670167527, now seen corresponding path program 42 times [2020-01-16 18:02:35,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:35,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708789952] [2020-01-16 18:02:35,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:35,912 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 18:02:35,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708789952] [2020-01-16 18:02:35,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:35,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:35,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036499293] [2020-01-16 18:02:35,913 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:35,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:35,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:35,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:35,914 INFO L87 Difference]: Start difference. First operand 91 states and 215 transitions. Second operand 7 states. [2020-01-16 18:02:35,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:35,991 INFO L93 Difference]: Finished difference Result 125 states and 256 transitions. [2020-01-16 18:02:35,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:35,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:35,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:35,993 INFO L225 Difference]: With dead ends: 125 [2020-01-16 18:02:35,993 INFO L226 Difference]: Without dead ends: 114 [2020-01-16 18:02:35,994 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:35,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-01-16 18:02:35,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 88. [2020-01-16 18:02:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:02:35,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 210 transitions. [2020-01-16 18:02:35,997 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 210 transitions. Word has length 16 [2020-01-16 18:02:35,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:35,998 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 210 transitions. [2020-01-16 18:02:35,998 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:35,998 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 210 transitions. [2020-01-16 18:02:35,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:35,998 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:35,998 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:35,998 INFO L426 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:35,999 INFO L82 PathProgramCache]: Analyzing trace with hash 844008489, now seen corresponding path program 43 times [2020-01-16 18:02:35,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:35,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131048938] [2020-01-16 18:02:35,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:36,161 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 18:02:36,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131048938] [2020-01-16 18:02:36,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:36,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:36,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207587228] [2020-01-16 18:02:36,163 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:36,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:36,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:36,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:36,164 INFO L87 Difference]: Start difference. First operand 88 states and 210 transitions. Second operand 7 states. [2020-01-16 18:02:36,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:36,214 INFO L93 Difference]: Finished difference Result 158 states and 318 transitions. [2020-01-16 18:02:36,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:36,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:36,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:36,215 INFO L225 Difference]: With dead ends: 158 [2020-01-16 18:02:36,215 INFO L226 Difference]: Without dead ends: 146 [2020-01-16 18:02:36,215 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:36,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-01-16 18:02:36,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 98. [2020-01-16 18:02:36,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-01-16 18:02:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-01-16 18:02:36,218 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 16 [2020-01-16 18:02:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:36,219 INFO L478 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-01-16 18:02:36,219 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-01-16 18:02:36,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:36,219 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:36,219 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:36,220 INFO L426 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:36,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:36,220 INFO L82 PathProgramCache]: Analyzing trace with hash 846141909, now seen corresponding path program 44 times [2020-01-16 18:02:36,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:36,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737088833] [2020-01-16 18:02:36,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:36,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737088833] [2020-01-16 18:02:36,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:36,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:36,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646439651] [2020-01-16 18:02:36,368 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:36,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:36,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:36,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:36,368 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 7 states. [2020-01-16 18:02:36,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:36,430 INFO L93 Difference]: Finished difference Result 156 states and 310 transitions. [2020-01-16 18:02:36,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:36,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:36,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:36,432 INFO L225 Difference]: With dead ends: 156 [2020-01-16 18:02:36,432 INFO L226 Difference]: Without dead ends: 140 [2020-01-16 18:02:36,433 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:36,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-01-16 18:02:36,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 92. [2020-01-16 18:02:36,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:02:36,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 218 transitions. [2020-01-16 18:02:36,436 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 218 transitions. Word has length 16 [2020-01-16 18:02:36,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:36,436 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 218 transitions. [2020-01-16 18:02:36,436 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:36,437 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 218 transitions. [2020-01-16 18:02:36,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:36,437 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:36,437 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:36,437 INFO L426 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:36,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:36,438 INFO L82 PathProgramCache]: Analyzing trace with hash -436396951, now seen corresponding path program 45 times [2020-01-16 18:02:36,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:36,438 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936873028] [2020-01-16 18:02:36,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:36,572 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936873028] [2020-01-16 18:02:36,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:36,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:36,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334482100] [2020-01-16 18:02:36,572 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:36,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:36,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:36,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:36,573 INFO L87 Difference]: Start difference. First operand 92 states and 218 transitions. Second operand 7 states. [2020-01-16 18:02:36,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:36,615 INFO L93 Difference]: Finished difference Result 147 states and 293 transitions. [2020-01-16 18:02:36,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:36,616 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:36,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:36,617 INFO L225 Difference]: With dead ends: 147 [2020-01-16 18:02:36,617 INFO L226 Difference]: Without dead ends: 135 [2020-01-16 18:02:36,617 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:36,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-01-16 18:02:36,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 95. [2020-01-16 18:02:36,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-01-16 18:02:36,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 222 transitions. [2020-01-16 18:02:36,622 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 222 transitions. Word has length 16 [2020-01-16 18:02:36,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:36,623 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 222 transitions. [2020-01-16 18:02:36,623 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:36,623 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 222 transitions. [2020-01-16 18:02:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:36,623 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:36,624 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:36,624 INFO L426 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:36,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:36,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1611900587, now seen corresponding path program 46 times [2020-01-16 18:02:36,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:36,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807172221] [2020-01-16 18:02:36,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:36,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807172221] [2020-01-16 18:02:36,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:36,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:36,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511692217] [2020-01-16 18:02:36,768 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:36,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:36,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:36,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:36,769 INFO L87 Difference]: Start difference. First operand 95 states and 222 transitions. Second operand 7 states. [2020-01-16 18:02:36,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:36,824 INFO L93 Difference]: Finished difference Result 136 states and 277 transitions. [2020-01-16 18:02:36,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:36,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:36,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:36,825 INFO L225 Difference]: With dead ends: 136 [2020-01-16 18:02:36,825 INFO L226 Difference]: Without dead ends: 125 [2020-01-16 18:02:36,826 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:36,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-01-16 18:02:36,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 92. [2020-01-16 18:02:36,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-01-16 18:02:36,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 215 transitions. [2020-01-16 18:02:36,831 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 215 transitions. Word has length 16 [2020-01-16 18:02:36,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:36,832 INFO L478 AbstractCegarLoop]: Abstraction has 92 states and 215 transitions. [2020-01-16 18:02:36,832 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:36,832 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 215 transitions. [2020-01-16 18:02:36,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:36,833 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:36,833 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:36,833 INFO L426 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:36,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1245457199, now seen corresponding path program 47 times [2020-01-16 18:02:36,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:36,834 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823181686] [2020-01-16 18:02:36,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:36,960 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 18:02:36,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823181686] [2020-01-16 18:02:36,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:36,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:36,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688559221] [2020-01-16 18:02:36,960 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:36,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:36,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:36,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:36,961 INFO L87 Difference]: Start difference. First operand 92 states and 215 transitions. Second operand 7 states. [2020-01-16 18:02:37,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:37,022 INFO L93 Difference]: Finished difference Result 144 states and 285 transitions. [2020-01-16 18:02:37,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:37,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:37,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:37,024 INFO L225 Difference]: With dead ends: 144 [2020-01-16 18:02:37,024 INFO L226 Difference]: Without dead ends: 134 [2020-01-16 18:02:37,024 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:37,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-01-16 18:02:37,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 94. [2020-01-16 18:02:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-01-16 18:02:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 218 transitions. [2020-01-16 18:02:37,028 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 218 transitions. Word has length 16 [2020-01-16 18:02:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:37,028 INFO L478 AbstractCegarLoop]: Abstraction has 94 states and 218 transitions. [2020-01-16 18:02:37,028 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 218 transitions. [2020-01-16 18:02:37,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:37,029 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:37,029 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:37,029 INFO L426 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:37,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:37,029 INFO L82 PathProgramCache]: Analyzing trace with hash 98712721, now seen corresponding path program 48 times [2020-01-16 18:02:37,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:37,030 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587554965] [2020-01-16 18:02:37,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:37,170 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 18:02:37,171 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587554965] [2020-01-16 18:02:37,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:37,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:37,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380407263] [2020-01-16 18:02:37,171 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:37,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:37,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:37,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:37,172 INFO L87 Difference]: Start difference. First operand 94 states and 218 transitions. Second operand 7 states. [2020-01-16 18:02:37,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:37,244 INFO L93 Difference]: Finished difference Result 135 states and 273 transitions. [2020-01-16 18:02:37,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:37,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:37,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:37,245 INFO L225 Difference]: With dead ends: 135 [2020-01-16 18:02:37,245 INFO L226 Difference]: Without dead ends: 118 [2020-01-16 18:02:37,246 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:37,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-01-16 18:02:37,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 85. [2020-01-16 18:02:37,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-01-16 18:02:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 202 transitions. [2020-01-16 18:02:37,251 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 202 transitions. Word has length 16 [2020-01-16 18:02:37,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:37,251 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 202 transitions. [2020-01-16 18:02:37,251 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:37,251 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 202 transitions. [2020-01-16 18:02:37,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:37,252 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:37,252 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:37,252 INFO L426 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:37,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:37,253 INFO L82 PathProgramCache]: Analyzing trace with hash -933023559, now seen corresponding path program 49 times [2020-01-16 18:02:37,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:37,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855837229] [2020-01-16 18:02:37,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:37,425 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 18:02:37,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855837229] [2020-01-16 18:02:37,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:37,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:37,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551964507] [2020-01-16 18:02:37,426 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:37,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:37,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:37,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:37,427 INFO L87 Difference]: Start difference. First operand 85 states and 202 transitions. Second operand 7 states. [2020-01-16 18:02:37,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:37,477 INFO L93 Difference]: Finished difference Result 135 states and 264 transitions. [2020-01-16 18:02:37,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:37,477 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:37,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:37,479 INFO L225 Difference]: With dead ends: 135 [2020-01-16 18:02:37,479 INFO L226 Difference]: Without dead ends: 128 [2020-01-16 18:02:37,479 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:37,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-01-16 18:02:37,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 87. [2020-01-16 18:02:37,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-01-16 18:02:37,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 205 transitions. [2020-01-16 18:02:37,483 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 205 transitions. Word has length 16 [2020-01-16 18:02:37,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:37,483 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 205 transitions. [2020-01-16 18:02:37,483 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:37,484 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 205 transitions. [2020-01-16 18:02:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:37,484 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:37,484 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:37,484 INFO L426 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:37,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:37,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1476458275, now seen corresponding path program 50 times [2020-01-16 18:02:37,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:37,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210439368] [2020-01-16 18:02:37,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:37,633 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 18:02:37,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210439368] [2020-01-16 18:02:37,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:37,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:37,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093576052] [2020-01-16 18:02:37,634 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:37,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:37,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:37,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:37,635 INFO L87 Difference]: Start difference. First operand 87 states and 205 transitions. Second operand 7 states. [2020-01-16 18:02:37,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:37,699 INFO L93 Difference]: Finished difference Result 140 states and 272 transitions. [2020-01-16 18:02:37,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:37,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:37,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:37,700 INFO L225 Difference]: With dead ends: 140 [2020-01-16 18:02:37,700 INFO L226 Difference]: Without dead ends: 126 [2020-01-16 18:02:37,700 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:37,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-01-16 18:02:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 85. [2020-01-16 18:02:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-01-16 18:02:37,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 200 transitions. [2020-01-16 18:02:37,703 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 200 transitions. Word has length 16 [2020-01-16 18:02:37,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:37,703 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 200 transitions. [2020-01-16 18:02:37,703 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 200 transitions. [2020-01-16 18:02:37,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:37,704 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:37,704 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:37,704 INFO L426 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:37,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:37,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1301083935, now seen corresponding path program 51 times [2020-01-16 18:02:37,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:37,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507484266] [2020-01-16 18:02:37,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:37,885 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 18:02:37,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507484266] [2020-01-16 18:02:37,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:37,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:37,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611893676] [2020-01-16 18:02:37,886 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:37,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:37,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:37,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:37,887 INFO L87 Difference]: Start difference. First operand 85 states and 200 transitions. Second operand 7 states. [2020-01-16 18:02:37,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:37,940 INFO L93 Difference]: Finished difference Result 130 states and 253 transitions. [2020-01-16 18:02:37,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:37,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:37,941 INFO L225 Difference]: With dead ends: 130 [2020-01-16 18:02:37,941 INFO L226 Difference]: Without dead ends: 123 [2020-01-16 18:02:37,942 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:37,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-01-16 18:02:37,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 86. [2020-01-16 18:02:37,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-01-16 18:02:37,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 201 transitions. [2020-01-16 18:02:37,944 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 201 transitions. Word has length 16 [2020-01-16 18:02:37,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:37,945 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 201 transitions. [2020-01-16 18:02:37,945 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:37,945 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 201 transitions. [2020-01-16 18:02:37,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:37,945 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:37,945 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:37,946 INFO L426 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:37,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:37,946 INFO L82 PathProgramCache]: Analyzing trace with hash -2146901751, now seen corresponding path program 52 times [2020-01-16 18:02:37,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:37,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138425956] [2020-01-16 18:02:37,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:38,099 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 18:02:38,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138425956] [2020-01-16 18:02:38,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:38,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:38,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291473069] [2020-01-16 18:02:38,100 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:38,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:38,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:38,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:38,101 INFO L87 Difference]: Start difference. First operand 86 states and 201 transitions. Second operand 7 states. [2020-01-16 18:02:38,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:38,154 INFO L93 Difference]: Finished difference Result 131 states and 254 transitions. [2020-01-16 18:02:38,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:38,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:38,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:38,155 INFO L225 Difference]: With dead ends: 131 [2020-01-16 18:02:38,156 INFO L226 Difference]: Without dead ends: 122 [2020-01-16 18:02:38,156 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:38,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-01-16 18:02:38,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 85. [2020-01-16 18:02:38,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-01-16 18:02:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 199 transitions. [2020-01-16 18:02:38,160 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 199 transitions. Word has length 16 [2020-01-16 18:02:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:38,160 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 199 transitions. [2020-01-16 18:02:38,160 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:38,160 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 199 transitions. [2020-01-16 18:02:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:38,161 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:38,161 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:38,161 INFO L426 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:38,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:38,162 INFO L82 PathProgramCache]: Analyzing trace with hash -989832141, now seen corresponding path program 53 times [2020-01-16 18:02:38,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:38,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857010059] [2020-01-16 18:02:38,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:38,318 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 18:02:38,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857010059] [2020-01-16 18:02:38,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:38,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:38,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289283660] [2020-01-16 18:02:38,319 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:38,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:38,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:38,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:38,320 INFO L87 Difference]: Start difference. First operand 85 states and 199 transitions. Second operand 7 states. [2020-01-16 18:02:38,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:38,365 INFO L93 Difference]: Finished difference Result 142 states and 275 transitions. [2020-01-16 18:02:38,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:38,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:38,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:38,367 INFO L225 Difference]: With dead ends: 142 [2020-01-16 18:02:38,367 INFO L226 Difference]: Without dead ends: 130 [2020-01-16 18:02:38,368 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:38,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-01-16 18:02:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 88. [2020-01-16 18:02:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-01-16 18:02:38,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 203 transitions. [2020-01-16 18:02:38,370 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 203 transitions. Word has length 16 [2020-01-16 18:02:38,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:38,371 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 203 transitions. [2020-01-16 18:02:38,371 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:38,371 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 203 transitions. [2020-01-16 18:02:38,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:38,371 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:38,371 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:38,371 INFO L426 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:38,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:38,372 INFO L82 PathProgramCache]: Analyzing trace with hash 2129631519, now seen corresponding path program 54 times [2020-01-16 18:02:38,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:38,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069224001] [2020-01-16 18:02:38,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:38,530 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069224001] [2020-01-16 18:02:38,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:38,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:38,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124616628] [2020-01-16 18:02:38,531 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:38,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:38,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:38,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:38,531 INFO L87 Difference]: Start difference. First operand 88 states and 203 transitions. Second operand 7 states. [2020-01-16 18:02:38,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:38,592 INFO L93 Difference]: Finished difference Result 138 states and 265 transitions. [2020-01-16 18:02:38,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:38,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:38,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:38,594 INFO L225 Difference]: With dead ends: 138 [2020-01-16 18:02:38,594 INFO L226 Difference]: Without dead ends: 125 [2020-01-16 18:02:38,594 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:38,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-01-16 18:02:38,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 83. [2020-01-16 18:02:38,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-01-16 18:02:38,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 194 transitions. [2020-01-16 18:02:38,598 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 194 transitions. Word has length 16 [2020-01-16 18:02:38,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:38,598 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 194 transitions. [2020-01-16 18:02:38,598 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:38,598 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 194 transitions. [2020-01-16 18:02:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:38,599 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:38,599 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:38,599 INFO L426 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:38,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:38,599 INFO L82 PathProgramCache]: Analyzing trace with hash -397793757, now seen corresponding path program 55 times [2020-01-16 18:02:38,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:38,599 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160855745] [2020-01-16 18:02:38,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:38,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160855745] [2020-01-16 18:02:38,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:38,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:38,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151962379] [2020-01-16 18:02:38,758 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:38,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:38,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:38,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:38,758 INFO L87 Difference]: Start difference. First operand 83 states and 194 transitions. Second operand 7 states. [2020-01-16 18:02:38,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:38,806 INFO L93 Difference]: Finished difference Result 133 states and 257 transitions. [2020-01-16 18:02:38,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:38,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:38,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:38,807 INFO L225 Difference]: With dead ends: 133 [2020-01-16 18:02:38,808 INFO L226 Difference]: Without dead ends: 126 [2020-01-16 18:02:38,808 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:38,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-01-16 18:02:38,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 83. [2020-01-16 18:02:38,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-01-16 18:02:38,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 193 transitions. [2020-01-16 18:02:38,811 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 193 transitions. Word has length 16 [2020-01-16 18:02:38,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:38,812 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 193 transitions. [2020-01-16 18:02:38,812 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:38,812 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 193 transitions. [2020-01-16 18:02:38,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:38,812 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:38,813 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:38,813 INFO L426 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:38,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:38,813 INFO L82 PathProgramCache]: Analyzing trace with hash -941228473, now seen corresponding path program 56 times [2020-01-16 18:02:38,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:38,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499083592] [2020-01-16 18:02:38,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:38,960 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 18:02:38,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499083592] [2020-01-16 18:02:38,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:38,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:38,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236332451] [2020-01-16 18:02:38,962 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:38,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:38,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:38,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:38,963 INFO L87 Difference]: Start difference. First operand 83 states and 193 transitions. Second operand 7 states. [2020-01-16 18:02:39,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:39,010 INFO L93 Difference]: Finished difference Result 138 states and 265 transitions. [2020-01-16 18:02:39,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:39,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:39,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:39,012 INFO L225 Difference]: With dead ends: 138 [2020-01-16 18:02:39,012 INFO L226 Difference]: Without dead ends: 124 [2020-01-16 18:02:39,013 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:39,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-01-16 18:02:39,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 81. [2020-01-16 18:02:39,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-01-16 18:02:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 188 transitions. [2020-01-16 18:02:39,016 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 188 transitions. Word has length 16 [2020-01-16 18:02:39,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:39,017 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 188 transitions. [2020-01-16 18:02:39,017 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:39,017 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 188 transitions. [2020-01-16 18:02:39,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:39,017 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:39,017 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:39,018 INFO L426 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:39,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:39,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1887198753, now seen corresponding path program 57 times [2020-01-16 18:02:39,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:39,018 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603213935] [2020-01-16 18:02:39,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:39,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603213935] [2020-01-16 18:02:39,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:39,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:39,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252667085] [2020-01-16 18:02:39,168 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:39,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:39,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:39,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:39,168 INFO L87 Difference]: Start difference. First operand 81 states and 188 transitions. Second operand 7 states. [2020-01-16 18:02:39,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:39,213 INFO L93 Difference]: Finished difference Result 128 states and 247 transitions. [2020-01-16 18:02:39,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:39,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:39,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:39,214 INFO L225 Difference]: With dead ends: 128 [2020-01-16 18:02:39,214 INFO L226 Difference]: Without dead ends: 121 [2020-01-16 18:02:39,214 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:39,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-01-16 18:02:39,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 82. [2020-01-16 18:02:39,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-01-16 18:02:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 189 transitions. [2020-01-16 18:02:39,218 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 189 transitions. Word has length 16 [2020-01-16 18:02:39,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:39,218 INFO L478 AbstractCegarLoop]: Abstraction has 82 states and 189 transitions. [2020-01-16 18:02:39,218 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:39,218 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 189 transitions. [2020-01-16 18:02:39,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:39,218 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:39,218 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:39,218 INFO L426 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:39,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:39,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1552461889, now seen corresponding path program 58 times [2020-01-16 18:02:39,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:39,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536879969] [2020-01-16 18:02:39,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:39,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536879969] [2020-01-16 18:02:39,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:39,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:39,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517411867] [2020-01-16 18:02:39,368 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:39,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:39,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:39,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:39,369 INFO L87 Difference]: Start difference. First operand 82 states and 189 transitions. Second operand 7 states. [2020-01-16 18:02:39,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:39,432 INFO L93 Difference]: Finished difference Result 123 states and 244 transitions. [2020-01-16 18:02:39,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:39,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:39,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:39,434 INFO L225 Difference]: With dead ends: 123 [2020-01-16 18:02:39,434 INFO L226 Difference]: Without dead ends: 113 [2020-01-16 18:02:39,434 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:39,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-01-16 18:02:39,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 81. [2020-01-16 18:02:39,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-01-16 18:02:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 187 transitions. [2020-01-16 18:02:39,437 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 187 transitions. Word has length 16 [2020-01-16 18:02:39,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:39,437 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 187 transitions. [2020-01-16 18:02:39,437 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 187 transitions. [2020-01-16 18:02:39,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:39,438 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:39,438 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:39,438 INFO L426 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:39,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:39,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1685930971, now seen corresponding path program 59 times [2020-01-16 18:02:39,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:39,439 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110399439] [2020-01-16 18:02:39,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:39,631 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 18:02:39,631 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110399439] [2020-01-16 18:02:39,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:39,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:39,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22502050] [2020-01-16 18:02:39,632 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:39,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:39,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:39,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:39,634 INFO L87 Difference]: Start difference. First operand 81 states and 187 transitions. Second operand 7 states. [2020-01-16 18:02:39,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:39,686 INFO L93 Difference]: Finished difference Result 136 states and 263 transitions. [2020-01-16 18:02:39,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:39,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:39,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:39,688 INFO L225 Difference]: With dead ends: 136 [2020-01-16 18:02:39,688 INFO L226 Difference]: Without dead ends: 124 [2020-01-16 18:02:39,689 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:39,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-01-16 18:02:39,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 85. [2020-01-16 18:02:39,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-01-16 18:02:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 193 transitions. [2020-01-16 18:02:39,692 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 193 transitions. Word has length 16 [2020-01-16 18:02:39,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:39,693 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 193 transitions. [2020-01-16 18:02:39,693 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:39,693 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 193 transitions. [2020-01-16 18:02:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:39,694 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:39,694 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:39,694 INFO L426 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:39,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:39,694 INFO L82 PathProgramCache]: Analyzing trace with hash -760187613, now seen corresponding path program 60 times [2020-01-16 18:02:39,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:39,695 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163806147] [2020-01-16 18:02:39,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:39,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163806147] [2020-01-16 18:02:39,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:39,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:39,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618121228] [2020-01-16 18:02:39,866 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:39,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:39,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:39,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:39,867 INFO L87 Difference]: Start difference. First operand 85 states and 193 transitions. Second operand 7 states. [2020-01-16 18:02:39,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:39,922 INFO L93 Difference]: Finished difference Result 126 states and 248 transitions. [2020-01-16 18:02:39,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:39,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:39,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:39,923 INFO L225 Difference]: With dead ends: 126 [2020-01-16 18:02:39,923 INFO L226 Difference]: Without dead ends: 111 [2020-01-16 18:02:39,923 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:39,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-01-16 18:02:39,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 79. [2020-01-16 18:02:39,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-01-16 18:02:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 182 transitions. [2020-01-16 18:02:39,926 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 182 transitions. Word has length 16 [2020-01-16 18:02:39,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:39,927 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 182 transitions. [2020-01-16 18:02:39,927 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:39,927 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 182 transitions. [2020-01-16 18:02:39,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:39,927 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:39,927 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:39,927 INFO L426 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:39,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:39,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1920797981, now seen corresponding path program 61 times [2020-01-16 18:02:39,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:39,929 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734911038] [2020-01-16 18:02:39,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:40,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:40,074 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734911038] [2020-01-16 18:02:40,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:40,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:40,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806052253] [2020-01-16 18:02:40,075 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:40,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:40,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:40,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:40,075 INFO L87 Difference]: Start difference. First operand 79 states and 182 transitions. Second operand 7 states. [2020-01-16 18:02:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:40,123 INFO L93 Difference]: Finished difference Result 120 states and 230 transitions. [2020-01-16 18:02:40,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:40,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:40,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:40,124 INFO L225 Difference]: With dead ends: 120 [2020-01-16 18:02:40,124 INFO L226 Difference]: Without dead ends: 113 [2020-01-16 18:02:40,125 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:40,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-01-16 18:02:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 81. [2020-01-16 18:02:40,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-01-16 18:02:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 186 transitions. [2020-01-16 18:02:40,127 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 186 transitions. Word has length 16 [2020-01-16 18:02:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:40,127 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 186 transitions. [2020-01-16 18:02:40,127 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 186 transitions. [2020-01-16 18:02:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:40,128 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:40,128 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:40,128 INFO L426 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:40,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:40,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1073816371, now seen corresponding path program 62 times [2020-01-16 18:02:40,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:40,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057568092] [2020-01-16 18:02:40,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:40,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:40,285 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057568092] [2020-01-16 18:02:40,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:40,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:40,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520294642] [2020-01-16 18:02:40,286 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:40,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:40,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:40,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:40,287 INFO L87 Difference]: Start difference. First operand 81 states and 186 transitions. Second operand 7 states. [2020-01-16 18:02:40,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:40,348 INFO L93 Difference]: Finished difference Result 121 states and 231 transitions. [2020-01-16 18:02:40,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:40,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:40,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:40,350 INFO L225 Difference]: With dead ends: 121 [2020-01-16 18:02:40,350 INFO L226 Difference]: Without dead ends: 112 [2020-01-16 18:02:40,350 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:40,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-01-16 18:02:40,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 80. [2020-01-16 18:02:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-01-16 18:02:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 184 transitions. [2020-01-16 18:02:40,353 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 184 transitions. Word has length 16 [2020-01-16 18:02:40,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:40,353 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 184 transitions. [2020-01-16 18:02:40,353 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:40,353 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 184 transitions. [2020-01-16 18:02:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:40,354 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:40,354 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:40,354 INFO L426 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:40,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:40,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1349343175, now seen corresponding path program 63 times [2020-01-16 18:02:40,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:40,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104923802] [2020-01-16 18:02:40,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:40,508 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 18:02:40,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104923802] [2020-01-16 18:02:40,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:40,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:40,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291778959] [2020-01-16 18:02:40,510 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:40,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:40,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:40,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:40,511 INFO L87 Difference]: Start difference. First operand 80 states and 184 transitions. Second operand 7 states. [2020-01-16 18:02:40,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:40,560 INFO L93 Difference]: Finished difference Result 119 states and 228 transitions. [2020-01-16 18:02:40,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:40,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:40,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:40,562 INFO L225 Difference]: With dead ends: 119 [2020-01-16 18:02:40,562 INFO L226 Difference]: Without dead ends: 112 [2020-01-16 18:02:40,562 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:40,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-01-16 18:02:40,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 81. [2020-01-16 18:02:40,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-01-16 18:02:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 185 transitions. [2020-01-16 18:02:40,566 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 185 transitions. Word has length 16 [2020-01-16 18:02:40,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:40,566 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 185 transitions. [2020-01-16 18:02:40,566 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:40,566 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 185 transitions. [2020-01-16 18:02:40,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:40,566 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:40,566 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:40,566 INFO L426 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:40,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:40,567 INFO L82 PathProgramCache]: Analyzing trace with hash 2090317467, now seen corresponding path program 64 times [2020-01-16 18:02:40,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:40,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022315304] [2020-01-16 18:02:40,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:40,762 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 18:02:40,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022315304] [2020-01-16 18:02:40,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:40,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:40,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234496191] [2020-01-16 18:02:40,764 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:40,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:40,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:40,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:40,765 INFO L87 Difference]: Start difference. First operand 81 states and 185 transitions. Second operand 7 states. [2020-01-16 18:02:40,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:40,845 INFO L93 Difference]: Finished difference Result 114 states and 225 transitions. [2020-01-16 18:02:40,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:40,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:40,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:40,847 INFO L225 Difference]: With dead ends: 114 [2020-01-16 18:02:40,848 INFO L226 Difference]: Without dead ends: 104 [2020-01-16 18:02:40,848 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:40,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-01-16 18:02:40,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 80. [2020-01-16 18:02:40,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-01-16 18:02:40,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 183 transitions. [2020-01-16 18:02:40,852 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 183 transitions. Word has length 16 [2020-01-16 18:02:40,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:40,852 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 183 transitions. [2020-01-16 18:02:40,853 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:40,853 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 183 transitions. [2020-01-16 18:02:40,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:40,853 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:40,854 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:40,854 INFO L426 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:40,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:40,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1818518869, now seen corresponding path program 65 times [2020-01-16 18:02:40,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:40,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12818890] [2020-01-16 18:02:40,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:41,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12818890] [2020-01-16 18:02:41,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:41,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:41,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198676934] [2020-01-16 18:02:41,066 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:41,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:41,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:41,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:41,067 INFO L87 Difference]: Start difference. First operand 80 states and 183 transitions. Second operand 7 states. [2020-01-16 18:02:41,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:41,145 INFO L93 Difference]: Finished difference Result 114 states and 226 transitions. [2020-01-16 18:02:41,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:41,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:41,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:41,147 INFO L225 Difference]: With dead ends: 114 [2020-01-16 18:02:41,147 INFO L226 Difference]: Without dead ends: 106 [2020-01-16 18:02:41,147 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:41,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-01-16 18:02:41,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 82. [2020-01-16 18:02:41,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-01-16 18:02:41,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 186 transitions. [2020-01-16 18:02:41,152 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 186 transitions. Word has length 16 [2020-01-16 18:02:41,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:41,152 INFO L478 AbstractCegarLoop]: Abstraction has 82 states and 186 transitions. [2020-01-16 18:02:41,152 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:41,152 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 186 transitions. [2020-01-16 18:02:41,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:41,153 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:41,153 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:41,153 INFO L426 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:41,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:41,154 INFO L82 PathProgramCache]: Analyzing trace with hash 3293241, now seen corresponding path program 66 times [2020-01-16 18:02:41,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:41,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236478836] [2020-01-16 18:02:41,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:41,365 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 18:02:41,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236478836] [2020-01-16 18:02:41,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:41,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:41,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030779860] [2020-01-16 18:02:41,366 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:41,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:41,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:41,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:41,367 INFO L87 Difference]: Start difference. First operand 82 states and 186 transitions. Second operand 7 states. [2020-01-16 18:02:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:41,448 INFO L93 Difference]: Finished difference Result 105 states and 215 transitions. [2020-01-16 18:02:41,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:41,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:41,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:41,450 INFO L225 Difference]: With dead ends: 105 [2020-01-16 18:02:41,450 INFO L226 Difference]: Without dead ends: 93 [2020-01-16 18:02:41,450 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:41,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-01-16 18:02:41,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 79. [2020-01-16 18:02:41,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-01-16 18:02:41,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 181 transitions. [2020-01-16 18:02:41,453 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 181 transitions. Word has length 16 [2020-01-16 18:02:41,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:41,453 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 181 transitions. [2020-01-16 18:02:41,453 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:41,453 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 181 transitions. [2020-01-16 18:02:41,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:41,454 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:41,454 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:41,454 INFO L426 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:41,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:41,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1694194197, now seen corresponding path program 67 times [2020-01-16 18:02:41,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:41,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286418483] [2020-01-16 18:02:41,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:41,627 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286418483] [2020-01-16 18:02:41,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:41,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:41,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836826721] [2020-01-16 18:02:41,628 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:41,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:41,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:41,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:41,629 INFO L87 Difference]: Start difference. First operand 79 states and 181 transitions. Second operand 7 states. [2020-01-16 18:02:41,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:41,668 INFO L93 Difference]: Finished difference Result 137 states and 267 transitions. [2020-01-16 18:02:41,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:41,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:41,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:41,669 INFO L225 Difference]: With dead ends: 137 [2020-01-16 18:02:41,669 INFO L226 Difference]: Without dead ends: 125 [2020-01-16 18:02:41,669 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:41,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-01-16 18:02:41,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 85. [2020-01-16 18:02:41,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-01-16 18:02:41,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 195 transitions. [2020-01-16 18:02:41,673 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 195 transitions. Word has length 16 [2020-01-16 18:02:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:41,673 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 195 transitions. [2020-01-16 18:02:41,673 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 195 transitions. [2020-01-16 18:02:41,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:41,674 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:41,674 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:41,674 INFO L426 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:41,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:41,674 INFO L82 PathProgramCache]: Analyzing trace with hash 518690561, now seen corresponding path program 68 times [2020-01-16 18:02:41,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:41,675 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840171976] [2020-01-16 18:02:41,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:41,818 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 18:02:41,818 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840171976] [2020-01-16 18:02:41,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:41,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:41,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806194782] [2020-01-16 18:02:41,819 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:41,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:41,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:41,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:41,820 INFO L87 Difference]: Start difference. First operand 85 states and 195 transitions. Second operand 7 states. [2020-01-16 18:02:41,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:41,881 INFO L93 Difference]: Finished difference Result 133 states and 257 transitions. [2020-01-16 18:02:41,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:41,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:41,882 INFO L225 Difference]: With dead ends: 133 [2020-01-16 18:02:41,882 INFO L226 Difference]: Without dead ends: 122 [2020-01-16 18:02:41,883 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:41,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-01-16 18:02:41,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 82. [2020-01-16 18:02:41,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-01-16 18:02:41,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 188 transitions. [2020-01-16 18:02:41,885 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 188 transitions. Word has length 16 [2020-01-16 18:02:41,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:41,886 INFO L478 AbstractCegarLoop]: Abstraction has 82 states and 188 transitions. [2020-01-16 18:02:41,886 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:41,886 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 188 transitions. [2020-01-16 18:02:41,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:41,886 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:41,886 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:41,886 INFO L426 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:41,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:41,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1959172537, now seen corresponding path program 69 times [2020-01-16 18:02:41,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:41,887 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152108461] [2020-01-16 18:02:41,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:42,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:42,027 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152108461] [2020-01-16 18:02:42,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:42,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:42,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385674134] [2020-01-16 18:02:42,027 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:42,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:42,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:42,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:42,028 INFO L87 Difference]: Start difference. First operand 82 states and 188 transitions. Second operand 7 states. [2020-01-16 18:02:42,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:42,080 INFO L93 Difference]: Finished difference Result 129 states and 249 transitions. [2020-01-16 18:02:42,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:42,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:42,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:42,082 INFO L225 Difference]: With dead ends: 129 [2020-01-16 18:02:42,082 INFO L226 Difference]: Without dead ends: 117 [2020-01-16 18:02:42,083 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:42,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-01-16 18:02:42,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 86. [2020-01-16 18:02:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-01-16 18:02:42,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 194 transitions. [2020-01-16 18:02:42,086 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 194 transitions. Word has length 16 [2020-01-16 18:02:42,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:42,087 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 194 transitions. [2020-01-16 18:02:42,087 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:42,087 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 194 transitions. [2020-01-16 18:02:42,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:42,087 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:42,087 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:42,088 INFO L426 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:42,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:42,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1440320653, now seen corresponding path program 70 times [2020-01-16 18:02:42,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:42,088 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20872054] [2020-01-16 18:02:42,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:42,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:42,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20872054] [2020-01-16 18:02:42,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:42,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:42,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146043582] [2020-01-16 18:02:42,233 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:42,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:42,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:42,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:42,234 INFO L87 Difference]: Start difference. First operand 86 states and 194 transitions. Second operand 7 states. [2020-01-16 18:02:42,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:42,306 INFO L93 Difference]: Finished difference Result 119 states and 234 transitions. [2020-01-16 18:02:42,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:42,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:42,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:42,308 INFO L225 Difference]: With dead ends: 119 [2020-01-16 18:02:42,308 INFO L226 Difference]: Without dead ends: 106 [2020-01-16 18:02:42,308 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:42,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-01-16 18:02:42,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 82. [2020-01-16 18:02:42,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-01-16 18:02:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 185 transitions. [2020-01-16 18:02:42,311 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 185 transitions. Word has length 16 [2020-01-16 18:02:42,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:42,311 INFO L478 AbstractCegarLoop]: Abstraction has 82 states and 185 transitions. [2020-01-16 18:02:42,312 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:42,312 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 185 transitions. [2020-01-16 18:02:42,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:42,312 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:42,312 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:42,312 INFO L426 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:42,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:42,313 INFO L82 PathProgramCache]: Analyzing trace with hash -568756211, now seen corresponding path program 71 times [2020-01-16 18:02:42,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:42,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392273482] [2020-01-16 18:02:42,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:42,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:42,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392273482] [2020-01-16 18:02:42,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:42,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:42,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624089908] [2020-01-16 18:02:42,459 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:42,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:42,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:42,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:42,460 INFO L87 Difference]: Start difference. First operand 82 states and 185 transitions. Second operand 7 states. [2020-01-16 18:02:42,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:42,521 INFO L93 Difference]: Finished difference Result 116 states and 228 transitions. [2020-01-16 18:02:42,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:42,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:42,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:42,523 INFO L225 Difference]: With dead ends: 116 [2020-01-16 18:02:42,523 INFO L226 Difference]: Without dead ends: 108 [2020-01-16 18:02:42,523 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-01-16 18:02:42,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2020-01-16 18:02:42,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-01-16 18:02:42,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 188 transitions. [2020-01-16 18:02:42,527 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 188 transitions. Word has length 16 [2020-01-16 18:02:42,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:42,527 INFO L478 AbstractCegarLoop]: Abstraction has 84 states and 188 transitions. [2020-01-16 18:02:42,527 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:42,527 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 188 transitions. [2020-01-16 18:02:42,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:42,528 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:42,528 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:42,528 INFO L426 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:42,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:42,528 INFO L82 PathProgramCache]: Analyzing trace with hash -568161565, now seen corresponding path program 72 times [2020-01-16 18:02:42,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:42,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784234309] [2020-01-16 18:02:42,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:42,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:42,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784234309] [2020-01-16 18:02:42,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:42,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:42,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298304943] [2020-01-16 18:02:42,674 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:42,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:42,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:42,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:42,675 INFO L87 Difference]: Start difference. First operand 84 states and 188 transitions. Second operand 7 states. [2020-01-16 18:02:42,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:42,732 INFO L93 Difference]: Finished difference Result 107 states and 217 transitions. [2020-01-16 18:02:42,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:42,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:42,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:42,733 INFO L225 Difference]: With dead ends: 107 [2020-01-16 18:02:42,733 INFO L226 Difference]: Without dead ends: 91 [2020-01-16 18:02:42,734 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:42,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-01-16 18:02:42,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 77. [2020-01-16 18:02:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-01-16 18:02:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 176 transitions. [2020-01-16 18:02:42,737 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 176 transitions. Word has length 16 [2020-01-16 18:02:42,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:42,737 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 176 transitions. [2020-01-16 18:02:42,738 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:42,738 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 176 transitions. [2020-01-16 18:02:42,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:42,738 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:42,738 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:42,738 INFO L426 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:42,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:42,739 INFO L82 PathProgramCache]: Analyzing trace with hash 577387645, now seen corresponding path program 73 times [2020-01-16 18:02:42,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:42,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591849814] [2020-01-16 18:02:42,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:42,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591849814] [2020-01-16 18:02:42,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:42,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:42,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963883994] [2020-01-16 18:02:42,889 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:42,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:42,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:42,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:42,890 INFO L87 Difference]: Start difference. First operand 77 states and 176 transitions. Second operand 7 states. [2020-01-16 18:02:42,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:42,939 INFO L93 Difference]: Finished difference Result 119 states and 225 transitions. [2020-01-16 18:02:42,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:42,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:42,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:42,941 INFO L225 Difference]: With dead ends: 119 [2020-01-16 18:02:42,941 INFO L226 Difference]: Without dead ends: 112 [2020-01-16 18:02:42,941 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:42,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-01-16 18:02:42,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 78. [2020-01-16 18:02:42,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-01-16 18:02:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 177 transitions. [2020-01-16 18:02:42,944 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 177 transitions. Word has length 16 [2020-01-16 18:02:42,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:42,944 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 177 transitions. [2020-01-16 18:02:42,945 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:42,945 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 177 transitions. [2020-01-16 18:02:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:42,945 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:42,945 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:42,945 INFO L426 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:42,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:42,946 INFO L82 PathProgramCache]: Analyzing trace with hash -775107319, now seen corresponding path program 74 times [2020-01-16 18:02:42,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:42,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617674849] [2020-01-16 18:02:42,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:43,107 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 18:02:43,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617674849] [2020-01-16 18:02:43,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:43,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:43,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152118568] [2020-01-16 18:02:43,108 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:43,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:43,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:43,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:43,109 INFO L87 Difference]: Start difference. First operand 78 states and 177 transitions. Second operand 7 states. [2020-01-16 18:02:43,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:43,171 INFO L93 Difference]: Finished difference Result 122 states and 230 transitions. [2020-01-16 18:02:43,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:43,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:43,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:43,172 INFO L225 Difference]: With dead ends: 122 [2020-01-16 18:02:43,173 INFO L226 Difference]: Without dead ends: 111 [2020-01-16 18:02:43,173 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:43,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-01-16 18:02:43,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 77. [2020-01-16 18:02:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-01-16 18:02:43,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 175 transitions. [2020-01-16 18:02:43,176 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 175 transitions. Word has length 16 [2020-01-16 18:02:43,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:43,177 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 175 transitions. [2020-01-16 18:02:43,177 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:43,177 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 175 transitions. [2020-01-16 18:02:43,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:43,177 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:43,178 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:43,178 INFO L426 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:43,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:43,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1322090143, now seen corresponding path program 75 times [2020-01-16 18:02:43,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:43,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47425617] [2020-01-16 18:02:43,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:43,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:43,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47425617] [2020-01-16 18:02:43,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:43,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:43,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554845280] [2020-01-16 18:02:43,342 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:43,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:43,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:43,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:43,343 INFO L87 Difference]: Start difference. First operand 77 states and 175 transitions. Second operand 7 states. [2020-01-16 18:02:43,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:43,389 INFO L93 Difference]: Finished difference Result 117 states and 220 transitions. [2020-01-16 18:02:43,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:43,389 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:43,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:43,390 INFO L225 Difference]: With dead ends: 117 [2020-01-16 18:02:43,390 INFO L226 Difference]: Without dead ends: 110 [2020-01-16 18:02:43,391 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:43,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-01-16 18:02:43,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 78. [2020-01-16 18:02:43,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-01-16 18:02:43,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 176 transitions. [2020-01-16 18:02:43,394 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 176 transitions. Word has length 16 [2020-01-16 18:02:43,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:43,394 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 176 transitions. [2020-01-16 18:02:43,394 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:43,394 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 176 transitions. [2020-01-16 18:02:43,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:43,395 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:43,395 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:43,395 INFO L426 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:43,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:43,395 INFO L82 PathProgramCache]: Analyzing trace with hash -2125895543, now seen corresponding path program 76 times [2020-01-16 18:02:43,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:43,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673968292] [2020-01-16 18:02:43,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:43,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673968292] [2020-01-16 18:02:43,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:43,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:43,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738319432] [2020-01-16 18:02:43,564 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:43,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:43,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:43,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:43,564 INFO L87 Difference]: Start difference. First operand 78 states and 176 transitions. Second operand 7 states. [2020-01-16 18:02:43,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:43,657 INFO L93 Difference]: Finished difference Result 118 states and 221 transitions. [2020-01-16 18:02:43,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:43,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:43,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:43,659 INFO L225 Difference]: With dead ends: 118 [2020-01-16 18:02:43,659 INFO L226 Difference]: Without dead ends: 109 [2020-01-16 18:02:43,659 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:43,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-01-16 18:02:43,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 77. [2020-01-16 18:02:43,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-01-16 18:02:43,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 174 transitions. [2020-01-16 18:02:43,663 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 174 transitions. Word has length 16 [2020-01-16 18:02:43,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:43,663 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 174 transitions. [2020-01-16 18:02:43,664 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:43,664 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 174 transitions. [2020-01-16 18:02:43,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:43,665 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:43,665 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:43,665 INFO L426 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:43,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:43,665 INFO L82 PathProgramCache]: Analyzing trace with hash -288481185, now seen corresponding path program 77 times [2020-01-16 18:02:43,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:43,666 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487626088] [2020-01-16 18:02:43,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:43,838 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 18:02:43,838 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487626088] [2020-01-16 18:02:43,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:43,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:43,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183392767] [2020-01-16 18:02:43,839 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:43,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:43,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:43,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:43,840 INFO L87 Difference]: Start difference. First operand 77 states and 174 transitions. Second operand 7 states. [2020-01-16 18:02:43,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:43,918 INFO L93 Difference]: Finished difference Result 124 states and 234 transitions. [2020-01-16 18:02:43,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:43,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:43,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:43,920 INFO L225 Difference]: With dead ends: 124 [2020-01-16 18:02:43,920 INFO L226 Difference]: Without dead ends: 114 [2020-01-16 18:02:43,920 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:43,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-01-16 18:02:43,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 79. [2020-01-16 18:02:43,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-01-16 18:02:43,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 177 transitions. [2020-01-16 18:02:43,924 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 177 transitions. Word has length 16 [2020-01-16 18:02:43,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:43,924 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 177 transitions. [2020-01-16 18:02:43,924 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:43,924 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 177 transitions. [2020-01-16 18:02:43,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:43,925 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:43,925 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:43,925 INFO L426 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:43,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:43,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1055688735, now seen corresponding path program 78 times [2020-01-16 18:02:43,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:43,926 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493889115] [2020-01-16 18:02:43,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:44,097 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493889115] [2020-01-16 18:02:44,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:44,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:44,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711338227] [2020-01-16 18:02:44,099 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:44,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:44,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:44,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:44,099 INFO L87 Difference]: Start difference. First operand 79 states and 177 transitions. Second operand 7 states. [2020-01-16 18:02:44,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:44,168 INFO L93 Difference]: Finished difference Result 122 states and 228 transitions. [2020-01-16 18:02:44,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:44,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:44,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:44,169 INFO L225 Difference]: With dead ends: 122 [2020-01-16 18:02:44,169 INFO L226 Difference]: Without dead ends: 111 [2020-01-16 18:02:44,170 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:44,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-01-16 18:02:44,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 76. [2020-01-16 18:02:44,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-01-16 18:02:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 172 transitions. [2020-01-16 18:02:44,172 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 172 transitions. Word has length 16 [2020-01-16 18:02:44,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:44,173 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 172 transitions. [2020-01-16 18:02:44,173 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 172 transitions. [2020-01-16 18:02:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:44,173 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:44,173 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:44,173 INFO L426 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:44,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:44,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1112617447, now seen corresponding path program 79 times [2020-01-16 18:02:44,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:44,174 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278545074] [2020-01-16 18:02:44,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:44,322 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 18:02:44,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278545074] [2020-01-16 18:02:44,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:44,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:44,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416747386] [2020-01-16 18:02:44,324 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:44,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:44,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:44,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:44,325 INFO L87 Difference]: Start difference. First operand 76 states and 172 transitions. Second operand 7 states. [2020-01-16 18:02:44,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:44,375 INFO L93 Difference]: Finished difference Result 119 states and 224 transitions. [2020-01-16 18:02:44,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:44,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:44,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:44,376 INFO L225 Difference]: With dead ends: 119 [2020-01-16 18:02:44,376 INFO L226 Difference]: Without dead ends: 112 [2020-01-16 18:02:44,376 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-01-16 18:02:44,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 76. [2020-01-16 18:02:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-01-16 18:02:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 171 transitions. [2020-01-16 18:02:44,380 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 171 transitions. Word has length 16 [2020-01-16 18:02:44,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:44,380 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 171 transitions. [2020-01-16 18:02:44,380 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:44,380 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 171 transitions. [2020-01-16 18:02:44,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:44,381 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:44,381 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:44,381 INFO L426 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:44,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:44,381 INFO L82 PathProgramCache]: Analyzing trace with hash -239877517, now seen corresponding path program 80 times [2020-01-16 18:02:44,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:44,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838945791] [2020-01-16 18:02:44,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:44,550 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838945791] [2020-01-16 18:02:44,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:44,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:44,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160064477] [2020-01-16 18:02:44,551 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:44,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:44,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:44,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:44,551 INFO L87 Difference]: Start difference. First operand 76 states and 171 transitions. Second operand 7 states. [2020-01-16 18:02:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:44,605 INFO L93 Difference]: Finished difference Result 122 states and 229 transitions. [2020-01-16 18:02:44,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:44,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:44,607 INFO L225 Difference]: With dead ends: 122 [2020-01-16 18:02:44,607 INFO L226 Difference]: Without dead ends: 111 [2020-01-16 18:02:44,607 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:44,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-01-16 18:02:44,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 75. [2020-01-16 18:02:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-01-16 18:02:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 169 transitions. [2020-01-16 18:02:44,609 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 169 transitions. Word has length 16 [2020-01-16 18:02:44,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:44,610 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 169 transitions. [2020-01-16 18:02:44,611 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:44,611 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 169 transitions. [2020-01-16 18:02:44,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:44,611 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:44,611 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:44,612 INFO L426 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:44,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:44,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1866192545, now seen corresponding path program 81 times [2020-01-16 18:02:44,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:44,613 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137100862] [2020-01-16 18:02:44,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:44,759 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 18:02:44,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137100862] [2020-01-16 18:02:44,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:44,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:44,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553237679] [2020-01-16 18:02:44,760 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:44,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:44,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:44,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:44,761 INFO L87 Difference]: Start difference. First operand 75 states and 169 transitions. Second operand 7 states. [2020-01-16 18:02:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:44,805 INFO L93 Difference]: Finished difference Result 117 states and 220 transitions. [2020-01-16 18:02:44,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:44,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:44,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:44,807 INFO L225 Difference]: With dead ends: 117 [2020-01-16 18:02:44,807 INFO L226 Difference]: Without dead ends: 110 [2020-01-16 18:02:44,807 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:44,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-01-16 18:02:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 76. [2020-01-16 18:02:44,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-01-16 18:02:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 170 transitions. [2020-01-16 18:02:44,810 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 170 transitions. Word has length 16 [2020-01-16 18:02:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:44,810 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 170 transitions. [2020-01-16 18:02:44,811 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 170 transitions. [2020-01-16 18:02:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:44,811 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:44,811 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:44,811 INFO L426 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:44,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:44,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1573468097, now seen corresponding path program 82 times [2020-01-16 18:02:44,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:44,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091978642] [2020-01-16 18:02:44,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:44,963 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 18:02:44,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091978642] [2020-01-16 18:02:44,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:44,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:44,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342125678] [2020-01-16 18:02:44,965 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:44,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:44,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:44,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:44,965 INFO L87 Difference]: Start difference. First operand 76 states and 170 transitions. Second operand 7 states. [2020-01-16 18:02:45,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:45,030 INFO L93 Difference]: Finished difference Result 112 states and 217 transitions. [2020-01-16 18:02:45,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:45,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:45,031 INFO L225 Difference]: With dead ends: 112 [2020-01-16 18:02:45,032 INFO L226 Difference]: Without dead ends: 102 [2020-01-16 18:02:45,032 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:45,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-01-16 18:02:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 75. [2020-01-16 18:02:45,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-01-16 18:02:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 168 transitions. [2020-01-16 18:02:45,034 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 168 transitions. Word has length 16 [2020-01-16 18:02:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:45,035 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 168 transitions. [2020-01-16 18:02:45,035 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 168 transitions. [2020-01-16 18:02:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:45,035 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:45,035 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:45,036 INFO L426 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:45,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:45,036 INFO L82 PathProgramCache]: Analyzing trace with hash -984580015, now seen corresponding path program 83 times [2020-01-16 18:02:45,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:45,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217968066] [2020-01-16 18:02:45,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:45,185 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217968066] [2020-01-16 18:02:45,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:45,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:45,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147490034] [2020-01-16 18:02:45,186 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:45,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:45,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:45,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:45,187 INFO L87 Difference]: Start difference. First operand 75 states and 168 transitions. Second operand 7 states. [2020-01-16 18:02:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:45,246 INFO L93 Difference]: Finished difference Result 122 states and 231 transitions. [2020-01-16 18:02:45,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:45,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:45,247 INFO L225 Difference]: With dead ends: 122 [2020-01-16 18:02:45,247 INFO L226 Difference]: Without dead ends: 112 [2020-01-16 18:02:45,248 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-01-16 18:02:45,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 78. [2020-01-16 18:02:45,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-01-16 18:02:45,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 173 transitions. [2020-01-16 18:02:45,252 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 173 transitions. Word has length 16 [2020-01-16 18:02:45,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:45,252 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 173 transitions. [2020-01-16 18:02:45,252 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:45,252 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 173 transitions. [2020-01-16 18:02:45,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:45,252 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:45,253 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:45,253 INFO L426 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:45,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:45,253 INFO L82 PathProgramCache]: Analyzing trace with hash -116381337, now seen corresponding path program 84 times [2020-01-16 18:02:45,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:45,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677324795] [2020-01-16 18:02:45,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:45,405 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 18:02:45,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677324795] [2020-01-16 18:02:45,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:45,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:45,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525010266] [2020-01-16 18:02:45,406 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:45,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:45,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:45,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:45,406 INFO L87 Difference]: Start difference. First operand 78 states and 173 transitions. Second operand 7 states. [2020-01-16 18:02:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:45,467 INFO L93 Difference]: Finished difference Result 114 states and 220 transitions. [2020-01-16 18:02:45,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:45,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:45,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:45,468 INFO L225 Difference]: With dead ends: 114 [2020-01-16 18:02:45,468 INFO L226 Difference]: Without dead ends: 101 [2020-01-16 18:02:45,469 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:45,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-01-16 18:02:45,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 74. [2020-01-16 18:02:45,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-01-16 18:02:45,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 166 transitions. [2020-01-16 18:02:45,471 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 166 transitions. Word has length 16 [2020-01-16 18:02:45,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:45,471 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 166 transitions. [2020-01-16 18:02:45,471 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:45,472 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 166 transitions. [2020-01-16 18:02:45,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:45,472 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:45,472 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:45,472 INFO L426 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:45,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:45,473 INFO L82 PathProgramCache]: Analyzing trace with hash -826706393, now seen corresponding path program 85 times [2020-01-16 18:02:45,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:45,473 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781749818] [2020-01-16 18:02:45,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:45,646 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 18:02:45,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781749818] [2020-01-16 18:02:45,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:45,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:45,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193302676] [2020-01-16 18:02:45,648 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:45,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:45,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:45,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:45,648 INFO L87 Difference]: Start difference. First operand 74 states and 166 transitions. Second operand 7 states. [2020-01-16 18:02:45,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:45,691 INFO L93 Difference]: Finished difference Result 111 states and 206 transitions. [2020-01-16 18:02:45,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:45,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:45,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:45,693 INFO L225 Difference]: With dead ends: 111 [2020-01-16 18:02:45,693 INFO L226 Difference]: Without dead ends: 104 [2020-01-16 18:02:45,693 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:45,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-01-16 18:02:45,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 74. [2020-01-16 18:02:45,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-01-16 18:02:45,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 165 transitions. [2020-01-16 18:02:45,696 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 165 transitions. Word has length 16 [2020-01-16 18:02:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:45,696 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 165 transitions. [2020-01-16 18:02:45,696 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 165 transitions. [2020-01-16 18:02:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:45,697 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:45,697 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:45,697 INFO L426 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:45,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:45,698 INFO L82 PathProgramCache]: Analyzing trace with hash 20275217, now seen corresponding path program 86 times [2020-01-16 18:02:45,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:45,698 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761083785] [2020-01-16 18:02:45,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:45,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761083785] [2020-01-16 18:02:45,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:45,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:45,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127962414] [2020-01-16 18:02:45,871 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:45,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:45,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:45,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:45,871 INFO L87 Difference]: Start difference. First operand 74 states and 165 transitions. Second operand 7 states. [2020-01-16 18:02:45,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:45,929 INFO L93 Difference]: Finished difference Result 112 states and 207 transitions. [2020-01-16 18:02:45,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:45,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:45,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:45,931 INFO L225 Difference]: With dead ends: 112 [2020-01-16 18:02:45,931 INFO L226 Difference]: Without dead ends: 103 [2020-01-16 18:02:45,931 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:45,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-01-16 18:02:45,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 73. [2020-01-16 18:02:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-01-16 18:02:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 163 transitions. [2020-01-16 18:02:45,936 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 163 transitions. Word has length 16 [2020-01-16 18:02:45,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:45,936 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 163 transitions. [2020-01-16 18:02:45,936 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:45,937 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 163 transitions. [2020-01-16 18:02:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:45,937 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:45,937 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:45,937 INFO L426 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:45,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:45,937 INFO L82 PathProgramCache]: Analyzing trace with hash -255251587, now seen corresponding path program 87 times [2020-01-16 18:02:45,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:45,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604782956] [2020-01-16 18:02:45,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:46,096 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604782956] [2020-01-16 18:02:46,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:46,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:46,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768165282] [2020-01-16 18:02:46,096 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:46,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:46,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:46,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:46,097 INFO L87 Difference]: Start difference. First operand 73 states and 163 transitions. Second operand 7 states. [2020-01-16 18:02:46,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:46,144 INFO L93 Difference]: Finished difference Result 110 states and 204 transitions. [2020-01-16 18:02:46,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:46,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:46,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:46,145 INFO L225 Difference]: With dead ends: 110 [2020-01-16 18:02:46,145 INFO L226 Difference]: Without dead ends: 103 [2020-01-16 18:02:46,145 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:46,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-01-16 18:02:46,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-01-16 18:02:46,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-01-16 18:02:46,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 161 transitions. [2020-01-16 18:02:46,148 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 161 transitions. Word has length 16 [2020-01-16 18:02:46,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:46,148 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 161 transitions. [2020-01-16 18:02:46,148 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:46,148 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 161 transitions. [2020-01-16 18:02:46,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:46,148 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:46,148 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:46,149 INFO L426 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:46,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:46,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1110558241, now seen corresponding path program 88 times [2020-01-16 18:02:46,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:46,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134267476] [2020-01-16 18:02:46,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:46,296 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 18:02:46,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134267476] [2020-01-16 18:02:46,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:46,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:46,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036684450] [2020-01-16 18:02:46,298 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:46,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:46,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:46,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:46,299 INFO L87 Difference]: Start difference. First operand 72 states and 161 transitions. Second operand 7 states. [2020-01-16 18:02:46,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:46,363 INFO L93 Difference]: Finished difference Result 105 states and 201 transitions. [2020-01-16 18:02:46,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:46,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:46,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:46,365 INFO L225 Difference]: With dead ends: 105 [2020-01-16 18:02:46,365 INFO L226 Difference]: Without dead ends: 95 [2020-01-16 18:02:46,365 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:46,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-01-16 18:02:46,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 71. [2020-01-16 18:02:46,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-01-16 18:02:46,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 159 transitions. [2020-01-16 18:02:46,369 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 159 transitions. Word has length 16 [2020-01-16 18:02:46,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:46,369 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 159 transitions. [2020-01-16 18:02:46,369 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:46,369 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 159 transitions. [2020-01-16 18:02:46,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:46,370 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:46,370 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:46,371 INFO L426 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:46,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:46,371 INFO L82 PathProgramCache]: Analyzing trace with hash -724427281, now seen corresponding path program 89 times [2020-01-16 18:02:46,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:46,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344650806] [2020-01-16 18:02:46,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:46,552 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 18:02:46,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344650806] [2020-01-16 18:02:46,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:46,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:46,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890204796] [2020-01-16 18:02:46,553 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:46,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:46,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:46,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:46,554 INFO L87 Difference]: Start difference. First operand 71 states and 159 transitions. Second operand 7 states. [2020-01-16 18:02:46,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:46,622 INFO L93 Difference]: Finished difference Result 105 states and 202 transitions. [2020-01-16 18:02:46,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:46,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:46,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:46,624 INFO L225 Difference]: With dead ends: 105 [2020-01-16 18:02:46,624 INFO L226 Difference]: Without dead ends: 97 [2020-01-16 18:02:46,624 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:46,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-01-16 18:02:46,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 73. [2020-01-16 18:02:46,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-01-16 18:02:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 162 transitions. [2020-01-16 18:02:46,628 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 162 transitions. Word has length 16 [2020-01-16 18:02:46,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:46,628 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 162 transitions. [2020-01-16 18:02:46,628 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 162 transitions. [2020-01-16 18:02:46,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:46,629 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:46,629 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:46,629 INFO L426 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:46,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:46,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1097384829, now seen corresponding path program 90 times [2020-01-16 18:02:46,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:46,630 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290970822] [2020-01-16 18:02:46,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:46,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290970822] [2020-01-16 18:02:46,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:46,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:46,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990302306] [2020-01-16 18:02:46,787 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:46,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:46,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:46,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:46,788 INFO L87 Difference]: Start difference. First operand 73 states and 162 transitions. Second operand 7 states. [2020-01-16 18:02:46,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:46,835 INFO L93 Difference]: Finished difference Result 96 states and 191 transitions. [2020-01-16 18:02:46,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:46,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:46,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:46,836 INFO L225 Difference]: With dead ends: 96 [2020-01-16 18:02:46,836 INFO L226 Difference]: Without dead ends: 84 [2020-01-16 18:02:46,837 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:46,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-01-16 18:02:46,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 70. [2020-01-16 18:02:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-01-16 18:02:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 157 transitions. [2020-01-16 18:02:46,839 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 157 transitions. Word has length 16 [2020-01-16 18:02:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:46,839 INFO L478 AbstractCegarLoop]: Abstraction has 70 states and 157 transitions. [2020-01-16 18:02:46,839 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:46,839 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 157 transitions. [2020-01-16 18:02:46,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:46,840 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:46,840 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:46,840 INFO L426 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:46,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:46,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1899422143, now seen corresponding path program 91 times [2020-01-16 18:02:46,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:46,840 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146587616] [2020-01-16 18:02:46,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:46,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146587616] [2020-01-16 18:02:46,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:46,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:46,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787008394] [2020-01-16 18:02:46,973 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:46,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:46,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:46,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:46,974 INFO L87 Difference]: Start difference. First operand 70 states and 157 transitions. Second operand 7 states. [2020-01-16 18:02:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:47,047 INFO L93 Difference]: Finished difference Result 112 states and 221 transitions. [2020-01-16 18:02:47,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:47,048 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:47,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:47,049 INFO L225 Difference]: With dead ends: 112 [2020-01-16 18:02:47,049 INFO L226 Difference]: Without dead ends: 102 [2020-01-16 18:02:47,050 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:47,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-01-16 18:02:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 74. [2020-01-16 18:02:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-01-16 18:02:47,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 167 transitions. [2020-01-16 18:02:47,053 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 167 transitions. Word has length 16 [2020-01-16 18:02:47,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:47,054 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 167 transitions. [2020-01-16 18:02:47,054 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:47,054 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 167 transitions. [2020-01-16 18:02:47,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:47,055 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:47,055 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:47,055 INFO L426 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:47,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:47,056 INFO L82 PathProgramCache]: Analyzing trace with hash -555252223, now seen corresponding path program 92 times [2020-01-16 18:02:47,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:47,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025540938] [2020-01-16 18:02:47,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:47,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:47,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025540938] [2020-01-16 18:02:47,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:47,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:47,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592441062] [2020-01-16 18:02:47,216 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:47,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:47,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:47,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:47,217 INFO L87 Difference]: Start difference. First operand 74 states and 167 transitions. Second operand 7 states. [2020-01-16 18:02:47,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:47,270 INFO L93 Difference]: Finished difference Result 110 states and 215 transitions. [2020-01-16 18:02:47,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:47,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:47,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:47,271 INFO L225 Difference]: With dead ends: 110 [2020-01-16 18:02:47,271 INFO L226 Difference]: Without dead ends: 100 [2020-01-16 18:02:47,271 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:47,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-01-16 18:02:47,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 72. [2020-01-16 18:02:47,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-01-16 18:02:47,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 162 transitions. [2020-01-16 18:02:47,275 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 162 transitions. Word has length 16 [2020-01-16 18:02:47,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:47,275 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 162 transitions. [2020-01-16 18:02:47,275 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:47,275 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 162 transitions. [2020-01-16 18:02:47,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:47,275 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:47,276 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:47,276 INFO L426 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:47,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:47,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1257821581, now seen corresponding path program 93 times [2020-01-16 18:02:47,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:47,276 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604213076] [2020-01-16 18:02:47,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:47,413 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 18:02:47,414 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604213076] [2020-01-16 18:02:47,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:47,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:47,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343614544] [2020-01-16 18:02:47,414 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:47,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:47,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:47,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:47,415 INFO L87 Difference]: Start difference. First operand 72 states and 162 transitions. Second operand 7 states. [2020-01-16 18:02:47,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:47,469 INFO L93 Difference]: Finished difference Result 106 states and 207 transitions. [2020-01-16 18:02:47,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:47,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:47,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:47,471 INFO L225 Difference]: With dead ends: 106 [2020-01-16 18:02:47,471 INFO L226 Difference]: Without dead ends: 96 [2020-01-16 18:02:47,471 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:47,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-01-16 18:02:47,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 75. [2020-01-16 18:02:47,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-01-16 18:02:47,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 167 transitions. [2020-01-16 18:02:47,474 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 167 transitions. Word has length 16 [2020-01-16 18:02:47,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:47,474 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 167 transitions. [2020-01-16 18:02:47,474 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:47,474 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 167 transitions. [2020-01-16 18:02:47,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:47,474 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:47,474 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:47,475 INFO L426 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:47,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:47,475 INFO L82 PathProgramCache]: Analyzing trace with hash 2084126929, now seen corresponding path program 94 times [2020-01-16 18:02:47,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:47,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582863999] [2020-01-16 18:02:47,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:47,631 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 18:02:47,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582863999] [2020-01-16 18:02:47,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:47,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:47,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911833384] [2020-01-16 18:02:47,632 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:47,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:47,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:47,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:47,633 INFO L87 Difference]: Start difference. First operand 75 states and 167 transitions. Second operand 7 states. [2020-01-16 18:02:47,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:47,694 INFO L93 Difference]: Finished difference Result 98 states and 196 transitions. [2020-01-16 18:02:47,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:47,694 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:47,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:47,695 INFO L225 Difference]: With dead ends: 98 [2020-01-16 18:02:47,696 INFO L226 Difference]: Without dead ends: 86 [2020-01-16 18:02:47,696 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-01-16 18:02:47,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2020-01-16 18:02:47,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-01-16 18:02:47,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 160 transitions. [2020-01-16 18:02:47,698 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 160 transitions. Word has length 16 [2020-01-16 18:02:47,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:47,699 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 160 transitions. [2020-01-16 18:02:47,699 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:47,699 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 160 transitions. [2020-01-16 18:02:47,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:47,699 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:47,699 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:47,699 INFO L426 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:47,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:47,700 INFO L82 PathProgramCache]: Analyzing trace with hash 941654993, now seen corresponding path program 95 times [2020-01-16 18:02:47,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:47,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030584505] [2020-01-16 18:02:47,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:47,848 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 18:02:47,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030584505] [2020-01-16 18:02:47,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:47,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:47,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58851605] [2020-01-16 18:02:47,849 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:47,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:47,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:47,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:47,849 INFO L87 Difference]: Start difference. First operand 72 states and 160 transitions. Second operand 7 states. [2020-01-16 18:02:47,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:47,894 INFO L93 Difference]: Finished difference Result 92 states and 184 transitions. [2020-01-16 18:02:47,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:47,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:47,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:47,895 INFO L225 Difference]: With dead ends: 92 [2020-01-16 18:02:47,895 INFO L226 Difference]: Without dead ends: 84 [2020-01-16 18:02:47,896 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:47,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-01-16 18:02:47,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2020-01-16 18:02:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-01-16 18:02:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 163 transitions. [2020-01-16 18:02:47,898 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 163 transitions. Word has length 16 [2020-01-16 18:02:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:47,898 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 163 transitions. [2020-01-16 18:02:47,898 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 163 transitions. [2020-01-16 18:02:47,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:47,899 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:47,899 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:47,899 INFO L426 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:47,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:47,899 INFO L82 PathProgramCache]: Analyzing trace with hash 942249639, now seen corresponding path program 96 times [2020-01-16 18:02:47,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:47,900 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243601147] [2020-01-16 18:02:47,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:48,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243601147] [2020-01-16 18:02:48,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:48,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:48,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199678273] [2020-01-16 18:02:48,038 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:48,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:48,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:48,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:48,039 INFO L87 Difference]: Start difference. First operand 74 states and 163 transitions. Second operand 7 states. [2020-01-16 18:02:48,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:48,092 INFO L93 Difference]: Finished difference Result 83 states and 173 transitions. [2020-01-16 18:02:48,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:48,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:48,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:48,093 INFO L225 Difference]: With dead ends: 83 [2020-01-16 18:02:48,093 INFO L226 Difference]: Without dead ends: 69 [2020-01-16 18:02:48,093 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:48,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-01-16 18:02:48,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-01-16 18:02:48,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-01-16 18:02:48,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 155 transitions. [2020-01-16 18:02:48,096 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 155 transitions. Word has length 16 [2020-01-16 18:02:48,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:48,096 INFO L478 AbstractCegarLoop]: Abstraction has 69 states and 155 transitions. [2020-01-16 18:02:48,096 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:48,096 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 155 transitions. [2020-01-16 18:02:48,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:48,097 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:48,097 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:48,098 INFO L426 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:48,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:48,098 INFO L82 PathProgramCache]: Analyzing trace with hash -370908157, now seen corresponding path program 97 times [2020-01-16 18:02:48,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:48,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512473357] [2020-01-16 18:02:48,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:48,265 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 18:02:48,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512473357] [2020-01-16 18:02:48,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:48,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:48,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784922773] [2020-01-16 18:02:48,267 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:48,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:48,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:48,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:48,268 INFO L87 Difference]: Start difference. First operand 69 states and 155 transitions. Second operand 7 states. [2020-01-16 18:02:48,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:48,317 INFO L93 Difference]: Finished difference Result 111 states and 213 transitions. [2020-01-16 18:02:48,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:48,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:48,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:48,318 INFO L225 Difference]: With dead ends: 111 [2020-01-16 18:02:48,318 INFO L226 Difference]: Without dead ends: 99 [2020-01-16 18:02:48,319 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:48,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-01-16 18:02:48,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 75. [2020-01-16 18:02:48,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-01-16 18:02:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 164 transitions. [2020-01-16 18:02:48,321 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 164 transitions. Word has length 16 [2020-01-16 18:02:48,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:48,321 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 164 transitions. [2020-01-16 18:02:48,321 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:48,321 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 164 transitions. [2020-01-16 18:02:48,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:48,322 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:48,322 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:48,322 INFO L426 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:48,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:48,322 INFO L82 PathProgramCache]: Analyzing trace with hash -368774737, now seen corresponding path program 98 times [2020-01-16 18:02:48,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:48,322 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698337352] [2020-01-16 18:02:48,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:48,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698337352] [2020-01-16 18:02:48,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:48,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:48,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051382256] [2020-01-16 18:02:48,458 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:48,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:48,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:48,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:48,459 INFO L87 Difference]: Start difference. First operand 75 states and 164 transitions. Second operand 7 states. [2020-01-16 18:02:48,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:48,509 INFO L93 Difference]: Finished difference Result 109 states and 205 transitions. [2020-01-16 18:02:48,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:48,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:48,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:48,510 INFO L225 Difference]: With dead ends: 109 [2020-01-16 18:02:48,510 INFO L226 Difference]: Without dead ends: 93 [2020-01-16 18:02:48,511 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:48,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-01-16 18:02:48,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 69. [2020-01-16 18:02:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-01-16 18:02:48,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 151 transitions. [2020-01-16 18:02:48,513 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 151 transitions. Word has length 16 [2020-01-16 18:02:48,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:48,513 INFO L478 AbstractCegarLoop]: Abstraction has 69 states and 151 transitions. [2020-01-16 18:02:48,513 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:48,513 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 151 transitions. [2020-01-16 18:02:48,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:48,514 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:48,514 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:48,514 INFO L426 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:48,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:48,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1651313597, now seen corresponding path program 99 times [2020-01-16 18:02:48,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:48,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33780027] [2020-01-16 18:02:48,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:48,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:48,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33780027] [2020-01-16 18:02:48,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:48,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:48,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632074831] [2020-01-16 18:02:48,669 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:48,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:48,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:48,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:48,670 INFO L87 Difference]: Start difference. First operand 69 states and 151 transitions. Second operand 7 states. [2020-01-16 18:02:48,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:48,713 INFO L93 Difference]: Finished difference Result 106 states and 198 transitions. [2020-01-16 18:02:48,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:48,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:48,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:48,714 INFO L225 Difference]: With dead ends: 106 [2020-01-16 18:02:48,714 INFO L226 Difference]: Without dead ends: 94 [2020-01-16 18:02:48,714 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:48,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-01-16 18:02:48,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 72. [2020-01-16 18:02:48,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-01-16 18:02:48,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 155 transitions. [2020-01-16 18:02:48,722 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 155 transitions. Word has length 16 [2020-01-16 18:02:48,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:48,723 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 155 transitions. [2020-01-16 18:02:48,723 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 155 transitions. [2020-01-16 18:02:48,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:48,724 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:48,727 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:48,727 INFO L426 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:48,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:48,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1468150063, now seen corresponding path program 100 times [2020-01-16 18:02:48,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:48,728 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538233149] [2020-01-16 18:02:48,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:48,878 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 18:02:48,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538233149] [2020-01-16 18:02:48,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:48,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:48,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557853746] [2020-01-16 18:02:48,879 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:48,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:48,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:48,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:48,880 INFO L87 Difference]: Start difference. First operand 72 states and 155 transitions. Second operand 7 states. [2020-01-16 18:02:48,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:48,935 INFO L93 Difference]: Finished difference Result 102 states and 188 transitions. [2020-01-16 18:02:48,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:48,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:48,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:48,936 INFO L225 Difference]: With dead ends: 102 [2020-01-16 18:02:48,936 INFO L226 Difference]: Without dead ends: 91 [2020-01-16 18:02:48,937 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-01-16 18:02:48,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 69. [2020-01-16 18:02:48,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-01-16 18:02:48,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 148 transitions. [2020-01-16 18:02:48,940 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 148 transitions. Word has length 16 [2020-01-16 18:02:48,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:48,940 INFO L478 AbstractCegarLoop]: Abstraction has 69 states and 148 transitions. [2020-01-16 18:02:48,940 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:48,940 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 148 transitions. [2020-01-16 18:02:48,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:48,941 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:48,941 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:48,941 INFO L426 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:48,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:48,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1834593451, now seen corresponding path program 101 times [2020-01-16 18:02:48,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:48,942 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036246740] [2020-01-16 18:02:48,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:49,067 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 18:02:49,067 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036246740] [2020-01-16 18:02:49,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:49,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:49,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607413755] [2020-01-16 18:02:49,068 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:49,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:49,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:49,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:49,068 INFO L87 Difference]: Start difference. First operand 69 states and 148 transitions. Second operand 7 states. [2020-01-16 18:02:49,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:49,113 INFO L93 Difference]: Finished difference Result 101 states and 187 transitions. [2020-01-16 18:02:49,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:49,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:49,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:49,114 INFO L225 Difference]: With dead ends: 101 [2020-01-16 18:02:49,114 INFO L226 Difference]: Without dead ends: 91 [2020-01-16 18:02:49,114 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:49,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-01-16 18:02:49,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 71. [2020-01-16 18:02:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-01-16 18:02:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 151 transitions. [2020-01-16 18:02:49,117 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 151 transitions. Word has length 16 [2020-01-16 18:02:49,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:49,117 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 151 transitions. [2020-01-16 18:02:49,117 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:49,117 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 151 transitions. [2020-01-16 18:02:49,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:49,118 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:49,118 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:49,118 INFO L426 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:49,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:49,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1116203925, now seen corresponding path program 102 times [2020-01-16 18:02:49,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:49,119 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727240357] [2020-01-16 18:02:49,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:49,230 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 18:02:49,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727240357] [2020-01-16 18:02:49,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:49,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:49,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554211749] [2020-01-16 18:02:49,231 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:49,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:49,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:49,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:49,232 INFO L87 Difference]: Start difference. First operand 71 states and 151 transitions. Second operand 7 states. [2020-01-16 18:02:49,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:49,286 INFO L93 Difference]: Finished difference Result 99 states and 181 transitions. [2020-01-16 18:02:49,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:49,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:49,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:49,287 INFO L225 Difference]: With dead ends: 99 [2020-01-16 18:02:49,287 INFO L226 Difference]: Without dead ends: 85 [2020-01-16 18:02:49,288 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:49,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-01-16 18:02:49,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 65. [2020-01-16 18:02:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-01-16 18:02:49,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 139 transitions. [2020-01-16 18:02:49,290 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 139 transitions. Word has length 16 [2020-01-16 18:02:49,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:49,290 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 139 transitions. [2020-01-16 18:02:49,290 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:49,290 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 139 transitions. [2020-01-16 18:02:49,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:49,291 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:49,291 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:49,291 INFO L426 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:49,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:49,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1956127215, now seen corresponding path program 103 times [2020-01-16 18:02:49,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:49,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340707989] [2020-01-16 18:02:49,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:49,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340707989] [2020-01-16 18:02:49,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:49,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:49,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832278361] [2020-01-16 18:02:49,454 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:49,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:49,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:49,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:49,455 INFO L87 Difference]: Start difference. First operand 65 states and 139 transitions. Second operand 7 states. [2020-01-16 18:02:49,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:49,505 INFO L93 Difference]: Finished difference Result 101 states and 183 transitions. [2020-01-16 18:02:49,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:49,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:49,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:49,507 INFO L225 Difference]: With dead ends: 101 [2020-01-16 18:02:49,507 INFO L226 Difference]: Without dead ends: 89 [2020-01-16 18:02:49,507 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:49,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-01-16 18:02:49,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 65. [2020-01-16 18:02:49,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-01-16 18:02:49,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 134 transitions. [2020-01-16 18:02:49,510 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 134 transitions. Word has length 16 [2020-01-16 18:02:49,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:49,510 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 134 transitions. [2020-01-16 18:02:49,510 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:49,510 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 134 transitions. [2020-01-16 18:02:49,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:49,511 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:49,511 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:49,511 INFO L426 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:49,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:49,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1953993795, now seen corresponding path program 104 times [2020-01-16 18:02:49,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:49,511 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55425362] [2020-01-16 18:02:49,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:49,766 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 18:02:49,766 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55425362] [2020-01-16 18:02:49,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:49,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:49,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102614521] [2020-01-16 18:02:49,767 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:49,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:49,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:49,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:49,768 INFO L87 Difference]: Start difference. First operand 65 states and 134 transitions. Second operand 7 states. [2020-01-16 18:02:49,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:49,824 INFO L93 Difference]: Finished difference Result 99 states and 175 transitions. [2020-01-16 18:02:49,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:49,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:49,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:49,825 INFO L225 Difference]: With dead ends: 99 [2020-01-16 18:02:49,826 INFO L226 Difference]: Without dead ends: 83 [2020-01-16 18:02:49,826 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:49,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-01-16 18:02:49,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 59. [2020-01-16 18:02:49,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-01-16 18:02:49,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 120 transitions. [2020-01-16 18:02:49,828 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 120 transitions. Word has length 16 [2020-01-16 18:02:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:49,829 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 120 transitions. [2020-01-16 18:02:49,829 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:49,829 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 120 transitions. [2020-01-16 18:02:49,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:49,829 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:49,829 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:49,829 INFO L426 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:49,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:49,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1434938509, now seen corresponding path program 105 times [2020-01-16 18:02:49,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:49,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417848057] [2020-01-16 18:02:49,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:50,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417848057] [2020-01-16 18:02:50,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:50,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:50,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056733041] [2020-01-16 18:02:50,007 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:50,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:50,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:50,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:50,008 INFO L87 Difference]: Start difference. First operand 59 states and 120 transitions. Second operand 7 states. [2020-01-16 18:02:50,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:50,049 INFO L93 Difference]: Finished difference Result 92 states and 162 transitions. [2020-01-16 18:02:50,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:50,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:50,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:50,050 INFO L225 Difference]: With dead ends: 92 [2020-01-16 18:02:50,050 INFO L226 Difference]: Without dead ends: 80 [2020-01-16 18:02:50,051 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:50,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-01-16 18:02:50,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2020-01-16 18:02:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-01-16 18:02:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 126 transitions. [2020-01-16 18:02:50,053 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 126 transitions. Word has length 16 [2020-01-16 18:02:50,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:50,053 INFO L478 AbstractCegarLoop]: Abstraction has 63 states and 126 transitions. [2020-01-16 18:02:50,053 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:50,054 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 126 transitions. [2020-01-16 18:02:50,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:50,054 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:50,054 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:50,054 INFO L426 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:50,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:50,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1473916669, now seen corresponding path program 106 times [2020-01-16 18:02:50,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:50,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907346706] [2020-01-16 18:02:50,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:50,201 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907346706] [2020-01-16 18:02:50,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:50,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:50,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106491893] [2020-01-16 18:02:50,202 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:50,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:50,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:50,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:50,203 INFO L87 Difference]: Start difference. First operand 63 states and 126 transitions. Second operand 7 states. [2020-01-16 18:02:50,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:50,261 INFO L93 Difference]: Finished difference Result 82 states and 147 transitions. [2020-01-16 18:02:50,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:50,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:50,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:50,262 INFO L225 Difference]: With dead ends: 82 [2020-01-16 18:02:50,262 INFO L226 Difference]: Without dead ends: 69 [2020-01-16 18:02:50,263 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:50,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-01-16 18:02:50,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2020-01-16 18:02:50,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-01-16 18:02:50,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 116 transitions. [2020-01-16 18:02:50,265 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 116 transitions. Word has length 16 [2020-01-16 18:02:50,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:50,265 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 116 transitions. [2020-01-16 18:02:50,265 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:50,265 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 116 transitions. [2020-01-16 18:02:50,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:50,266 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:50,266 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:50,266 INFO L426 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:50,266 INFO L82 PathProgramCache]: Analyzing trace with hash 340355231, now seen corresponding path program 107 times [2020-01-16 18:02:50,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:50,267 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769763711] [2020-01-16 18:02:50,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:50,410 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 18:02:50,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769763711] [2020-01-16 18:02:50,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:50,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:50,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305346673] [2020-01-16 18:02:50,412 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:50,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:50,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:50,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:50,413 INFO L87 Difference]: Start difference. First operand 59 states and 116 transitions. Second operand 7 states. [2020-01-16 18:02:50,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:50,463 INFO L93 Difference]: Finished difference Result 89 states and 153 transitions. [2020-01-16 18:02:50,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:50,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:50,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:50,464 INFO L225 Difference]: With dead ends: 89 [2020-01-16 18:02:50,464 INFO L226 Difference]: Without dead ends: 79 [2020-01-16 18:02:50,465 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:50,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-01-16 18:02:50,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 62. [2020-01-16 18:02:50,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-01-16 18:02:50,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 121 transitions. [2020-01-16 18:02:50,466 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 121 transitions. Word has length 16 [2020-01-16 18:02:50,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:50,467 INFO L478 AbstractCegarLoop]: Abstraction has 62 states and 121 transitions. [2020-01-16 18:02:50,467 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:50,467 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 121 transitions. [2020-01-16 18:02:50,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:50,467 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:50,467 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:50,467 INFO L426 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:50,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:50,468 INFO L82 PathProgramCache]: Analyzing trace with hash 243832391, now seen corresponding path program 108 times [2020-01-16 18:02:50,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:50,468 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811321074] [2020-01-16 18:02:50,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:50,611 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 18:02:50,611 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811321074] [2020-01-16 18:02:50,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:50,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:50,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167413665] [2020-01-16 18:02:50,612 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:50,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:50,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:50,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:50,612 INFO L87 Difference]: Start difference. First operand 62 states and 121 transitions. Second operand 7 states. [2020-01-16 18:02:50,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:50,667 INFO L93 Difference]: Finished difference Result 81 states and 142 transitions. [2020-01-16 18:02:50,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:50,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:50,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:50,668 INFO L225 Difference]: With dead ends: 81 [2020-01-16 18:02:50,668 INFO L226 Difference]: Without dead ends: 63 [2020-01-16 18:02:50,669 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:50,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-01-16 18:02:50,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2020-01-16 18:02:50,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-01-16 18:02:50,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 103 transitions. [2020-01-16 18:02:50,671 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 103 transitions. Word has length 16 [2020-01-16 18:02:50,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:50,671 INFO L478 AbstractCegarLoop]: Abstraction has 53 states and 103 transitions. [2020-01-16 18:02:50,671 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:50,671 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 103 transitions. [2020-01-16 18:02:50,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:50,671 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:50,671 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:50,671 INFO L426 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:50,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:50,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1803137139, now seen corresponding path program 109 times [2020-01-16 18:02:50,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:50,672 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831608623] [2020-01-16 18:02:50,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:50,839 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 18:02:50,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831608623] [2020-01-16 18:02:50,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:50,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:50,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387165935] [2020-01-16 18:02:50,840 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:50,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:50,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:50,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:50,840 INFO L87 Difference]: Start difference. First operand 53 states and 103 transitions. Second operand 7 states. [2020-01-16 18:02:50,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:50,879 INFO L93 Difference]: Finished difference Result 81 states and 133 transitions. [2020-01-16 18:02:50,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:50,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:50,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:50,880 INFO L225 Difference]: With dead ends: 81 [2020-01-16 18:02:50,880 INFO L226 Difference]: Without dead ends: 69 [2020-01-16 18:02:50,881 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-01-16 18:02:50,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 53. [2020-01-16 18:02:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-01-16 18:02:50,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 100 transitions. [2020-01-16 18:02:50,883 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 100 transitions. Word has length 16 [2020-01-16 18:02:50,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:50,883 INFO L478 AbstractCegarLoop]: Abstraction has 53 states and 100 transitions. [2020-01-16 18:02:50,883 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:50,883 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 100 transitions. [2020-01-16 18:02:50,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:50,884 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:50,884 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:50,884 INFO L426 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:50,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:50,884 INFO L82 PathProgramCache]: Analyzing trace with hash 627633503, now seen corresponding path program 110 times [2020-01-16 18:02:50,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:50,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984591857] [2020-01-16 18:02:50,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:51,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984591857] [2020-01-16 18:02:51,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:51,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:51,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3642437] [2020-01-16 18:02:51,030 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:51,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:51,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:51,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:51,030 INFO L87 Difference]: Start difference. First operand 53 states and 100 transitions. Second operand 7 states. [2020-01-16 18:02:51,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:51,080 INFO L93 Difference]: Finished difference Result 77 states and 123 transitions. [2020-01-16 18:02:51,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:51,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:51,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:51,081 INFO L225 Difference]: With dead ends: 77 [2020-01-16 18:02:51,081 INFO L226 Difference]: Without dead ends: 66 [2020-01-16 18:02:51,081 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-01-16 18:02:51,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 50. [2020-01-16 18:02:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-01-16 18:02:51,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 93 transitions. [2020-01-16 18:02:51,083 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 93 transitions. Word has length 16 [2020-01-16 18:02:51,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:51,083 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 93 transitions. [2020-01-16 18:02:51,083 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:51,083 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 93 transitions. [2020-01-16 18:02:51,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:51,084 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:51,084 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:51,084 INFO L426 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:51,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:51,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1821571165, now seen corresponding path program 111 times [2020-01-16 18:02:51,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:51,085 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583637320] [2020-01-16 18:02:51,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:51,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583637320] [2020-01-16 18:02:51,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:51,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:51,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519796433] [2020-01-16 18:02:51,216 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:51,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:51,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:51,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:51,217 INFO L87 Difference]: Start difference. First operand 50 states and 93 transitions. Second operand 7 states. [2020-01-16 18:02:51,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:51,253 INFO L93 Difference]: Finished difference Result 73 states and 115 transitions. [2020-01-16 18:02:51,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:51,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:51,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:51,254 INFO L225 Difference]: With dead ends: 73 [2020-01-16 18:02:51,254 INFO L226 Difference]: Without dead ends: 61 [2020-01-16 18:02:51,254 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:51,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-01-16 18:02:51,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 44. [2020-01-16 18:02:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-01-16 18:02:51,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 79 transitions. [2020-01-16 18:02:51,257 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 79 transitions. Word has length 16 [2020-01-16 18:02:51,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:51,257 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 79 transitions. [2020-01-16 18:02:51,257 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:51,258 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 79 transitions. [2020-01-16 18:02:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:51,258 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:51,258 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:51,259 INFO L426 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:51,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:51,259 INFO L82 PathProgramCache]: Analyzing trace with hash 926097059, now seen corresponding path program 112 times [2020-01-16 18:02:51,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:51,260 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329051932] [2020-01-16 18:02:51,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:51,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329051932] [2020-01-16 18:02:51,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:51,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:51,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146475043] [2020-01-16 18:02:51,447 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:51,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:51,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:51,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:51,447 INFO L87 Difference]: Start difference. First operand 44 states and 79 transitions. Second operand 7 states. [2020-01-16 18:02:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:51,497 INFO L93 Difference]: Finished difference Result 63 states and 100 transitions. [2020-01-16 18:02:51,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:51,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:51,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:51,497 INFO L225 Difference]: With dead ends: 63 [2020-01-16 18:02:51,498 INFO L226 Difference]: Without dead ends: 50 [2020-01-16 18:02:51,498 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:51,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-01-16 18:02:51,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 40. [2020-01-16 18:02:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-01-16 18:02:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 70 transitions. [2020-01-16 18:02:51,499 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 70 transitions. Word has length 16 [2020-01-16 18:02:51,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:51,499 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 70 transitions. [2020-01-16 18:02:51,499 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 70 transitions. [2020-01-16 18:02:51,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:51,500 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:51,500 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:51,500 INFO L426 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:51,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:51,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1082979805, now seen corresponding path program 113 times [2020-01-16 18:02:51,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:51,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196155450] [2020-01-16 18:02:51,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:51,633 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 18:02:51,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196155450] [2020-01-16 18:02:51,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:51,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:51,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203005068] [2020-01-16 18:02:51,635 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:51,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:51,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:51,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:51,635 INFO L87 Difference]: Start difference. First operand 40 states and 70 transitions. Second operand 7 states. [2020-01-16 18:02:51,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:51,689 INFO L93 Difference]: Finished difference Result 60 states and 94 transitions. [2020-01-16 18:02:51,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:51,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:51,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:51,690 INFO L225 Difference]: With dead ends: 60 [2020-01-16 18:02:51,690 INFO L226 Difference]: Without dead ends: 52 [2020-01-16 18:02:51,691 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:51,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-01-16 18:02:51,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2020-01-16 18:02:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-01-16 18:02:51,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 73 transitions. [2020-01-16 18:02:51,692 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 73 transitions. Word has length 16 [2020-01-16 18:02:51,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:51,693 INFO L478 AbstractCegarLoop]: Abstraction has 42 states and 73 transitions. [2020-01-16 18:02:51,693 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:51,693 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 73 transitions. [2020-01-16 18:02:51,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:51,693 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:51,693 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:51,694 INFO L426 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:51,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:51,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1082385159, now seen corresponding path program 114 times [2020-01-16 18:02:51,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:51,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990645767] [2020-01-16 18:02:51,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:51,836 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 18:02:51,836 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990645767] [2020-01-16 18:02:51,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:51,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:51,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413373166] [2020-01-16 18:02:51,837 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:51,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:51,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:51,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:51,837 INFO L87 Difference]: Start difference. First operand 42 states and 73 transitions. Second operand 7 states. [2020-01-16 18:02:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:51,907 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2020-01-16 18:02:51,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:51,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:51,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:51,908 INFO L225 Difference]: With dead ends: 51 [2020-01-16 18:02:51,908 INFO L226 Difference]: Without dead ends: 37 [2020-01-16 18:02:51,908 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-01-16 18:02:51,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-01-16 18:02:51,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-01-16 18:02:51,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 63 transitions. [2020-01-16 18:02:51,910 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 63 transitions. Word has length 16 [2020-01-16 18:02:51,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:51,910 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 63 transitions. [2020-01-16 18:02:51,911 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:51,911 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 63 transitions. [2020-01-16 18:02:51,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:51,911 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:51,911 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:51,911 INFO L426 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:51,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:51,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1811485409, now seen corresponding path program 115 times [2020-01-16 18:02:51,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:51,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297349616] [2020-01-16 18:02:51,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:52,045 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297349616] [2020-01-16 18:02:52,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:52,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:52,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814076807] [2020-01-16 18:02:52,046 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:52,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:52,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:52,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:52,047 INFO L87 Difference]: Start difference. First operand 37 states and 63 transitions. Second operand 7 states. [2020-01-16 18:02:52,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:52,098 INFO L93 Difference]: Finished difference Result 54 states and 81 transitions. [2020-01-16 18:02:52,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:52,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:52,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:52,099 INFO L225 Difference]: With dead ends: 54 [2020-01-16 18:02:52,099 INFO L226 Difference]: Without dead ends: 44 [2020-01-16 18:02:52,100 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:52,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-01-16 18:02:52,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2020-01-16 18:02:52,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-01-16 18:02:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 61 transitions. [2020-01-16 18:02:52,102 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 61 transitions. Word has length 16 [2020-01-16 18:02:52,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:52,102 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 61 transitions. [2020-01-16 18:02:52,102 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:52,103 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 61 transitions. [2020-01-16 18:02:52,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:52,103 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:52,103 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:52,104 INFO L426 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:52,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:52,104 INFO L82 PathProgramCache]: Analyzing trace with hash -467315489, now seen corresponding path program 116 times [2020-01-16 18:02:52,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:52,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576482268] [2020-01-16 18:02:52,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:52,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576482268] [2020-01-16 18:02:52,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:52,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:52,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615425569] [2020-01-16 18:02:52,240 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:52,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:52,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:52,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:52,241 INFO L87 Difference]: Start difference. First operand 37 states and 61 transitions. Second operand 7 states. [2020-01-16 18:02:52,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:52,303 INFO L93 Difference]: Finished difference Result 52 states and 75 transitions. [2020-01-16 18:02:52,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:52,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:52,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:52,304 INFO L225 Difference]: With dead ends: 52 [2020-01-16 18:02:52,304 INFO L226 Difference]: Without dead ends: 42 [2020-01-16 18:02:52,304 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:52,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-01-16 18:02:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-01-16 18:02:52,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-01-16 18:02:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-01-16 18:02:52,306 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 16 [2020-01-16 18:02:52,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:52,306 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-01-16 18:02:52,306 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:52,306 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-01-16 18:02:52,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:52,307 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:52,307 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:52,307 INFO L426 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:52,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:52,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1793051383, now seen corresponding path program 117 times [2020-01-16 18:02:52,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:52,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262139626] [2020-01-16 18:02:52,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:52,466 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 18:02:52,467 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262139626] [2020-01-16 18:02:52,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:52,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:52,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584356099] [2020-01-16 18:02:52,467 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:52,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:52,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:52,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:52,468 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 7 states. [2020-01-16 18:02:52,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:52,522 INFO L93 Difference]: Finished difference Result 48 states and 67 transitions. [2020-01-16 18:02:52,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:52,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:52,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:52,523 INFO L225 Difference]: With dead ends: 48 [2020-01-16 18:02:52,523 INFO L226 Difference]: Without dead ends: 38 [2020-01-16 18:02:52,523 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:52,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-01-16 18:02:52,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-01-16 18:02:52,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-01-16 18:02:52,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions. [2020-01-16 18:02:52,525 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 46 transitions. Word has length 16 [2020-01-16 18:02:52,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:52,525 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 46 transitions. [2020-01-16 18:02:52,525 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:52,525 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 46 transitions. [2020-01-16 18:02:52,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:52,525 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:52,525 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:52,525 INFO L426 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:52,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:52,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1548897127, now seen corresponding path program 118 times [2020-01-16 18:02:52,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:52,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150571211] [2020-01-16 18:02:52,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:52,674 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150571211] [2020-01-16 18:02:52,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:52,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:52,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650263750] [2020-01-16 18:02:52,675 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:52,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:52,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:52,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:52,675 INFO L87 Difference]: Start difference. First operand 31 states and 46 transitions. Second operand 7 states. [2020-01-16 18:02:52,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:52,725 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2020-01-16 18:02:52,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:52,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:52,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:52,726 INFO L225 Difference]: With dead ends: 40 [2020-01-16 18:02:52,726 INFO L226 Difference]: Without dead ends: 28 [2020-01-16 18:02:52,726 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:52,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-01-16 18:02:52,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-01-16 18:02:52,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-01-16 18:02:52,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2020-01-16 18:02:52,728 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 16 [2020-01-16 18:02:52,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:52,729 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2020-01-16 18:02:52,729 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:52,729 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2020-01-16 18:02:52,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:52,729 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:52,729 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:52,729 INFO L426 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:52,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:52,730 INFO L82 PathProgramCache]: Analyzing trace with hash 406425191, now seen corresponding path program 119 times [2020-01-16 18:02:52,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:52,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403266749] [2020-01-16 18:02:52,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:52,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403266749] [2020-01-16 18:02:52,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:52,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:52,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339827878] [2020-01-16 18:02:52,871 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:52,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:52,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:52,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:52,871 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand 7 states. [2020-01-16 18:02:52,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:52,920 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2020-01-16 18:02:52,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:52,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:52,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:52,921 INFO L225 Difference]: With dead ends: 34 [2020-01-16 18:02:52,921 INFO L226 Difference]: Without dead ends: 26 [2020-01-16 18:02:52,921 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:52,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-01-16 18:02:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-01-16 18:02:52,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-01-16 18:02:52,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2020-01-16 18:02:52,923 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 16 [2020-01-16 18:02:52,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:52,923 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2020-01-16 18:02:52,923 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:52,924 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2020-01-16 18:02:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-01-16 18:02:52,924 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:52,924 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:52,924 INFO L426 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:02:52,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:52,925 INFO L82 PathProgramCache]: Analyzing trace with hash 407019837, now seen corresponding path program 120 times [2020-01-16 18:02:52,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:52,925 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111213413] [2020-01-16 18:02:52,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:53,081 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 18:02:53,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111213413] [2020-01-16 18:02:53,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:53,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-01-16 18:02:53,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557613704] [2020-01-16 18:02:53,082 INFO L458 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-01-16 18:02:53,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:53,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-01-16 18:02:53,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:02:53,083 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand 7 states. [2020-01-16 18:02:53,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:53,126 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-01-16 18:02:53,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-01-16 18:02:53,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-01-16 18:02:53,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:53,127 INFO L225 Difference]: With dead ends: 25 [2020-01-16 18:02:53,127 INFO L226 Difference]: Without dead ends: 0 [2020-01-16 18:02:53,127 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-01-16 18:02:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-01-16 18:02:53,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-01-16 18:02:53,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-01-16 18:02:53,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-01-16 18:02:53,128 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-01-16 18:02:53,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:53,128 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-01-16 18:02:53,128 INFO L479 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-01-16 18:02:53,129 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-01-16 18:02:53,129 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-01-16 18:02:53,132 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 06:02:53 BasicIcfg [2020-01-16 18:02:53,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 18:02:53,134 INFO L168 Benchmark]: Toolchain (without parser) took 29294.29 ms. Allocated memory was 136.8 MB in the beginning and 526.9 MB in the end (delta: 390.1 MB). Free memory was 117.1 MB in the beginning and 212.4 MB in the end (delta: -95.3 MB). Peak memory consumption was 294.7 MB. Max. memory is 7.1 GB. [2020-01-16 18:02:53,134 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 18:02:53,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.72 ms. Allocated memory is still 136.8 MB. Free memory was 116.9 MB in the beginning and 115.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-01-16 18:02:53,135 INFO L168 Benchmark]: Boogie Preprocessor took 24.62 ms. Allocated memory is still 136.8 MB. Free memory was 115.2 MB in the beginning and 114.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-01-16 18:02:53,136 INFO L168 Benchmark]: RCFGBuilder took 252.07 ms. Allocated memory is still 136.8 MB. Free memory was 114.1 MB in the beginning and 102.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-01-16 18:02:53,136 INFO L168 Benchmark]: TraceAbstraction took 28974.96 ms. Allocated memory was 136.8 MB in the beginning and 526.9 MB in the end (delta: 390.1 MB). Free memory was 102.4 MB in the beginning and 212.4 MB in the end (delta: -110.0 MB). Peak memory consumption was 280.1 MB. Max. memory is 7.1 GB. [2020-01-16 18:02:53,138 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 0.24 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 118.1 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 37.72 ms. Allocated memory is still 136.8 MB. Free memory was 116.9 MB in the beginning and 115.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.62 ms. Allocated memory is still 136.8 MB. Free memory was 115.2 MB in the beginning and 114.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 252.07 ms. Allocated memory is still 136.8 MB. Free memory was 114.1 MB in the beginning and 102.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28974.96 ms. Allocated memory was 136.8 MB in the beginning and 526.9 MB in the end (delta: 390.1 MB). Free memory was 102.4 MB in the beginning and 212.4 MB in the end (delta: -110.0 MB). Peak memory consumption was 280.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.4s, 44 ProgramPointsBefore, 37 ProgramPointsAfterwards, 48 TransitionsBefore, 42 TransitionsAfterwards, 440 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 120 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 130 CheckedPairsTotal, 6 TotalNumberOfCompositions - PositiveResult [Line: 23]: 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 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 28.8s, OverallIterations: 124, TraceHistogramMax: 1, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 4412 SDtfs, 6995 SDslu, 6966 SDs, 0 SdLazy, 2498 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 852 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 724 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 20.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred 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: 0.5s AutomataMinimizationTime, 124 MinimizatonAttempts, 3834 StatesRemovedByMinimization, 115 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 19.1s InterpolantComputationTime, 1984 NumberOfCodeBlocks, 1984 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 1860 ConstructedInterpolants, 0 QuantifiedInterpolants, 417870 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 124 InterpolantComputations, 124 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...