/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 18:30:39,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 18:30:39,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 18:30:39,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 18:30:39,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 18:30:39,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 18:30:39,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 18:30:39,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 18:30:39,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 18:30:39,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 18:30:39,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 18:30:39,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 18:30:39,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 18:30:39,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 18:30:39,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 18:30:39,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 18:30:39,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 18:30:39,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 18:30:39,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 18:30:39,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 18:30:39,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 18:30:39,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 18:30:39,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 18:30:39,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 18:30:39,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 18:30:39,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-01-16 18:30:39,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-01-16 18:30:39,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-01-16 18:30:39,588 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-01-16 18:30:39,602 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 18:30:39,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 18:30:39,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 18:30:39,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 18:30:39,604 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 18:30:39,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 18:30:39,605 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 18:30:39,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 18:30:39,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 18:30:39,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 18:30:39,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 18:30:39,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 18:30:39,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 18:30:39,606 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 18:30:39,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 18:30:39,606 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 18:30:39,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 18:30:39,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 18:30:39,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 18:30:39,607 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 18:30:39,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 18:30:39,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 18:30:39,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 18:30:39,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 18:30:39,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 18:30:39,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 18:30:39,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 18:30:39,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-01-16 18:30:39,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 18:30:39,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 18:30:39,894 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 18:30:39,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 18:30:39,900 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 18:30:39,901 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 18:30:39,902 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl [2020-01-16 18:30:39,902 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl' [2020-01-16 18:30:39,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 18:30:39,939 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 18:30:39,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 18:30:39,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 18:30:39,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 18:30:39,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:39" (1/1) ... [2020-01-16 18:30:39,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:39" (1/1) ... [2020-01-16 18:30:39,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 18:30:39,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 18:30:39,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 18:30:39,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 18:30:39,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:39" (1/1) ... [2020-01-16 18:30:39,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:39" (1/1) ... [2020-01-16 18:30:39,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:39" (1/1) ... [2020-01-16 18:30:39,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:39" (1/1) ... [2020-01-16 18:30:39,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:39" (1/1) ... [2020-01-16 18:30:39,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:39" (1/1) ... [2020-01-16 18:30:39,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:39" (1/1) ... [2020-01-16 18:30:39,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 18:30:39,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 18:30:39,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 18:30:39,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 18:30:40,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:39" (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 18:30:40,077 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 18:30:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 18:30:40,078 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 18:30:40,080 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 18:30:40,080 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 18:30:40,080 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 18:30:40,081 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 18:30:40,081 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 18:30:40,081 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 18:30:40,081 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 18:30:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 18:30:40,082 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 18:30:40,082 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 18:30:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 18:30:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 18:30:40,084 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 18:30:40,270 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 18:30:40,271 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 18:30:40,272 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 06:30:40 BoogieIcfgContainer [2020-01-16 18:30:40,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 18:30:40,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 18:30:40,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 18:30:40,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 18:30:40,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:30:39" (1/2) ... [2020-01-16 18:30:40,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44064e51 and model type example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 06:30:40, skipping insertion in model container [2020-01-16 18:30:40,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 06:30:40" (2/2) ... [2020-01-16 18:30:40,280 INFO L109 eAbstractionObserver]: Analyzing ICFG example_4.bpl [2020-01-16 18:30:40,290 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-01-16 18:30:40,290 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 18:30:40,297 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 18:30:40,298 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 18:30:40,469 INFO L250 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-01-16 18:30:40,507 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 18:30:40,508 INFO L375 AbstractCegarLoop]: Hoare is true [2020-01-16 18:30:40,508 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 18:30:40,508 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 18:30:40,508 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 18:30:40,508 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 18:30:40,508 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 18:30:40,509 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 18:30:40,523 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 35 transitions [2020-01-16 18:30:40,525 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions [2020-01-16 18:30:40,579 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2020-01-16 18:30:40,579 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-01-16 18:30:40,590 INFO L76 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 47 events. 17/47 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 124 event pairs. 0/46 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2020-01-16 18:30:40,593 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions [2020-01-16 18:30:40,612 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2020-01-16 18:30:40,613 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-01-16 18:30:40,615 INFO L76 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 47 events. 17/47 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 124 event pairs. 0/46 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2020-01-16 18:30:40,616 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 216 [2020-01-16 18:30:40,617 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-01-16 18:30:40,714 INFO L206 etLargeBlockEncoding]: Checked pairs total: 66 [2020-01-16 18:30:40,714 INFO L214 etLargeBlockEncoding]: Total number of compositions: 5 [2020-01-16 18:30:40,718 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 30 transitions [2020-01-16 18:30:40,732 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 98 states. [2020-01-16 18:30:40,734 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-01-16 18:30:40,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:40,743 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:40,744 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:40,745 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:40,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:40,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1774799827, now seen corresponding path program 1 times [2020-01-16 18:30:40,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:40,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394839970] [2020-01-16 18:30:40,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:40,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394839970] [2020-01-16 18:30:40,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:40,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:30:40,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911463376] [2020-01-16 18:30:40,916 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:30:40,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:40,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:30:40,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:30:40,935 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2020-01-16 18:30:40,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:40,963 INFO L93 Difference]: Finished difference Result 72 states and 170 transitions. [2020-01-16 18:30:40,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:30:40,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-01-16 18:30:40,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:40,979 INFO L225 Difference]: With dead ends: 72 [2020-01-16 18:30:40,979 INFO L226 Difference]: Without dead ends: 71 [2020-01-16 18:30:40,981 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 18:30:41,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-01-16 18:30:41,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-01-16 18:30:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-01-16 18:30:41,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 169 transitions. [2020-01-16 18:30:41,029 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 169 transitions. Word has length 13 [2020-01-16 18:30:41,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:41,031 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 169 transitions. [2020-01-16 18:30:41,031 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:30:41,031 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 169 transitions. [2020-01-16 18:30:41,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:41,032 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:41,033 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:41,033 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:41,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:41,034 INFO L82 PathProgramCache]: Analyzing trace with hash 828669875, now seen corresponding path program 1 times [2020-01-16 18:30:41,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:41,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245844204] [2020-01-16 18:30:41,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:41,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245844204] [2020-01-16 18:30:41,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:41,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:30:41,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733098438] [2020-01-16 18:30:41,066 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:30:41,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:41,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:30:41,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:30:41,068 INFO L87 Difference]: Start difference. First operand 71 states and 169 transitions. Second operand 3 states. [2020-01-16 18:30:41,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:41,078 INFO L93 Difference]: Finished difference Result 55 states and 121 transitions. [2020-01-16 18:30:41,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:30:41,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-01-16 18:30:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:41,080 INFO L225 Difference]: With dead ends: 55 [2020-01-16 18:30:41,080 INFO L226 Difference]: Without dead ends: 55 [2020-01-16 18:30:41,081 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 18:30:41,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-01-16 18:30:41,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-01-16 18:30:41,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-01-16 18:30:41,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 121 transitions. [2020-01-16 18:30:41,104 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 121 transitions. Word has length 13 [2020-01-16 18:30:41,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:41,105 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 121 transitions. [2020-01-16 18:30:41,105 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:30:41,106 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 121 transitions. [2020-01-16 18:30:41,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:41,109 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:41,109 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:41,109 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:41,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:41,110 INFO L82 PathProgramCache]: Analyzing trace with hash 857298065, now seen corresponding path program 1 times [2020-01-16 18:30:41,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:41,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046050006] [2020-01-16 18:30:41,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:41,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:41,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046050006] [2020-01-16 18:30:41,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:41,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:41,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316666207] [2020-01-16 18:30:41,349 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:41,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:41,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:41,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:41,350 INFO L87 Difference]: Start difference. First operand 55 states and 121 transitions. Second operand 6 states. [2020-01-16 18:30:41,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:41,450 INFO L93 Difference]: Finished difference Result 85 states and 160 transitions. [2020-01-16 18:30:41,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:41,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:41,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:41,452 INFO L225 Difference]: With dead ends: 85 [2020-01-16 18:30:41,453 INFO L226 Difference]: Without dead ends: 77 [2020-01-16 18:30:41,453 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:41,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-01-16 18:30:41,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2020-01-16 18:30:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-01-16 18:30:41,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 124 transitions. [2020-01-16 18:30:41,462 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 124 transitions. Word has length 13 [2020-01-16 18:30:41,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:41,463 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 124 transitions. [2020-01-16 18:30:41,463 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:41,463 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 124 transitions. [2020-01-16 18:30:41,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:41,464 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:41,464 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:41,465 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:41,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:41,465 INFO L82 PathProgramCache]: Analyzing trace with hash 27913103, now seen corresponding path program 2 times [2020-01-16 18:30:41,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:41,466 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391028648] [2020-01-16 18:30:41,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:41,652 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391028648] [2020-01-16 18:30:41,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:41,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:41,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285796639] [2020-01-16 18:30:41,653 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:41,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:41,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:41,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:41,654 INFO L87 Difference]: Start difference. First operand 57 states and 124 transitions. Second operand 6 states. [2020-01-16 18:30:41,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:41,722 INFO L93 Difference]: Finished difference Result 87 states and 163 transitions. [2020-01-16 18:30:41,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:41,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:41,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:41,724 INFO L225 Difference]: With dead ends: 87 [2020-01-16 18:30:41,724 INFO L226 Difference]: Without dead ends: 75 [2020-01-16 18:30:41,725 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:41,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-01-16 18:30:41,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-01-16 18:30:41,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-01-16 18:30:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 119 transitions. [2020-01-16 18:30:41,737 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 119 transitions. Word has length 13 [2020-01-16 18:30:41,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:41,737 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 119 transitions. [2020-01-16 18:30:41,738 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:41,738 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 119 transitions. [2020-01-16 18:30:41,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:41,739 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:41,739 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:41,739 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:41,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:41,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1712604719, now seen corresponding path program 3 times [2020-01-16 18:30:41,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:41,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075604411] [2020-01-16 18:30:41,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:41,952 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 18:30:41,954 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075604411] [2020-01-16 18:30:41,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:41,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:41,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80479734] [2020-01-16 18:30:41,955 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:41,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:41,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:41,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:41,956 INFO L87 Difference]: Start difference. First operand 55 states and 119 transitions. Second operand 6 states. [2020-01-16 18:30:42,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:42,022 INFO L93 Difference]: Finished difference Result 88 states and 163 transitions. [2020-01-16 18:30:42,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:42,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:42,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:42,024 INFO L225 Difference]: With dead ends: 88 [2020-01-16 18:30:42,024 INFO L226 Difference]: Without dead ends: 80 [2020-01-16 18:30:42,025 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:42,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-01-16 18:30:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 58. [2020-01-16 18:30:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-01-16 18:30:42,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 124 transitions. [2020-01-16 18:30:42,033 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 124 transitions. Word has length 13 [2020-01-16 18:30:42,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:42,033 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 124 transitions. [2020-01-16 18:30:42,034 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:42,034 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 124 transitions. [2020-01-16 18:30:42,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:42,035 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:42,035 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:42,036 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:42,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:42,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1769799917, now seen corresponding path program 4 times [2020-01-16 18:30:42,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:42,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503989260] [2020-01-16 18:30:42,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:42,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503989260] [2020-01-16 18:30:42,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:42,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:42,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636200507] [2020-01-16 18:30:42,209 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:42,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:42,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:42,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:42,210 INFO L87 Difference]: Start difference. First operand 58 states and 124 transitions. Second operand 6 states. [2020-01-16 18:30:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:42,263 INFO L93 Difference]: Finished difference Result 92 states and 169 transitions. [2020-01-16 18:30:42,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:42,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:42,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:42,264 INFO L225 Difference]: With dead ends: 92 [2020-01-16 18:30:42,265 INFO L226 Difference]: Without dead ends: 77 [2020-01-16 18:30:42,265 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:42,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-01-16 18:30:42,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 55. [2020-01-16 18:30:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-01-16 18:30:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 116 transitions. [2020-01-16 18:30:42,271 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 116 transitions. Word has length 13 [2020-01-16 18:30:42,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:42,271 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 116 transitions. [2020-01-16 18:30:42,271 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:42,271 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 116 transitions. [2020-01-16 18:30:42,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:42,272 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:42,272 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:42,273 INFO L426 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:42,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:42,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1800964241, now seen corresponding path program 5 times [2020-01-16 18:30:42,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:42,274 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419468584] [2020-01-16 18:30:42,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:42,444 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419468584] [2020-01-16 18:30:42,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:42,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:42,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141459364] [2020-01-16 18:30:42,447 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:42,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:42,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:42,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:42,448 INFO L87 Difference]: Start difference. First operand 55 states and 116 transitions. Second operand 6 states. [2020-01-16 18:30:42,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:42,504 INFO L93 Difference]: Finished difference Result 95 states and 178 transitions. [2020-01-16 18:30:42,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:42,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:42,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:42,506 INFO L225 Difference]: With dead ends: 95 [2020-01-16 18:30:42,506 INFO L226 Difference]: Without dead ends: 85 [2020-01-16 18:30:42,507 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:42,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-01-16 18:30:42,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 61. [2020-01-16 18:30:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-01-16 18:30:42,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 127 transitions. [2020-01-16 18:30:42,517 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 127 transitions. Word has length 13 [2020-01-16 18:30:42,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:42,520 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 127 transitions. [2020-01-16 18:30:42,520 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:42,520 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 127 transitions. [2020-01-16 18:30:42,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:42,521 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:42,521 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:42,521 INFO L426 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:42,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:42,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1828669871, now seen corresponding path program 6 times [2020-01-16 18:30:42,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:42,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43307921] [2020-01-16 18:30:42,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:42,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43307921] [2020-01-16 18:30:42,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:42,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:42,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892248579] [2020-01-16 18:30:42,676 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:42,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:42,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:42,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:42,679 INFO L87 Difference]: Start difference. First operand 61 states and 127 transitions. Second operand 6 states. [2020-01-16 18:30:42,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:42,719 INFO L93 Difference]: Finished difference Result 97 states and 177 transitions. [2020-01-16 18:30:42,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:42,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:42,721 INFO L225 Difference]: With dead ends: 97 [2020-01-16 18:30:42,721 INFO L226 Difference]: Without dead ends: 74 [2020-01-16 18:30:42,721 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:42,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-01-16 18:30:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 50. [2020-01-16 18:30:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-01-16 18:30:42,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 104 transitions. [2020-01-16 18:30:42,726 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 104 transitions. Word has length 13 [2020-01-16 18:30:42,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:42,726 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 104 transitions. [2020-01-16 18:30:42,727 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:42,729 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 104 transitions. [2020-01-16 18:30:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:42,729 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:42,730 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:42,730 INFO L426 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:42,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:42,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1602000563, now seen corresponding path program 7 times [2020-01-16 18:30:42,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:42,731 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242038032] [2020-01-16 18:30:42,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:42,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242038032] [2020-01-16 18:30:42,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:42,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:42,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770060671] [2020-01-16 18:30:42,858 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:42,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:42,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:42,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:42,859 INFO L87 Difference]: Start difference. First operand 50 states and 104 transitions. Second operand 6 states. [2020-01-16 18:30:42,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:42,923 INFO L93 Difference]: Finished difference Result 78 states and 138 transitions. [2020-01-16 18:30:42,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:42,924 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:42,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:42,925 INFO L225 Difference]: With dead ends: 78 [2020-01-16 18:30:42,925 INFO L226 Difference]: Without dead ends: 70 [2020-01-16 18:30:42,926 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-01-16 18:30:42,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 50. [2020-01-16 18:30:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-01-16 18:30:42,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 102 transitions. [2020-01-16 18:30:42,937 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 102 transitions. Word has length 13 [2020-01-16 18:30:42,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:42,937 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 102 transitions. [2020-01-16 18:30:42,938 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:42,938 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 102 transitions. [2020-01-16 18:30:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:42,938 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:42,939 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:42,942 INFO L426 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:42,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:42,942 INFO L82 PathProgramCache]: Analyzing trace with hash 772615601, now seen corresponding path program 8 times [2020-01-16 18:30:42,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:42,943 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022211175] [2020-01-16 18:30:42,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:43,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022211175] [2020-01-16 18:30:43,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:43,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:43,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614650226] [2020-01-16 18:30:43,089 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:43,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:43,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:43,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:43,091 INFO L87 Difference]: Start difference. First operand 50 states and 102 transitions. Second operand 6 states. [2020-01-16 18:30:43,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:43,164 INFO L93 Difference]: Finished difference Result 80 states and 141 transitions. [2020-01-16 18:30:43,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:43,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:43,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:43,167 INFO L225 Difference]: With dead ends: 80 [2020-01-16 18:30:43,167 INFO L226 Difference]: Without dead ends: 68 [2020-01-16 18:30:43,168 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:43,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-01-16 18:30:43,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2020-01-16 18:30:43,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-01-16 18:30:43,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 98 transitions. [2020-01-16 18:30:43,181 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 98 transitions. Word has length 13 [2020-01-16 18:30:43,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:43,181 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 98 transitions. [2020-01-16 18:30:43,181 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:43,182 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 98 transitions. [2020-01-16 18:30:43,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:43,182 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:43,182 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:43,188 INFO L426 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:43,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:43,188 INFO L82 PathProgramCache]: Analyzing trace with hash -982353425, now seen corresponding path program 9 times [2020-01-16 18:30:43,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:43,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196927842] [2020-01-16 18:30:43,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:43,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196927842] [2020-01-16 18:30:43,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:43,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:43,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549084395] [2020-01-16 18:30:43,346 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:43,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:43,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:43,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:43,347 INFO L87 Difference]: Start difference. First operand 48 states and 98 transitions. Second operand 6 states. [2020-01-16 18:30:43,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:43,398 INFO L93 Difference]: Finished difference Result 73 states and 126 transitions. [2020-01-16 18:30:43,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:43,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:43,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:43,399 INFO L225 Difference]: With dead ends: 73 [2020-01-16 18:30:43,400 INFO L226 Difference]: Without dead ends: 65 [2020-01-16 18:30:43,400 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:43,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-01-16 18:30:43,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2020-01-16 18:30:43,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-01-16 18:30:43,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 99 transitions. [2020-01-16 18:30:43,404 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 99 transitions. Word has length 13 [2020-01-16 18:30:43,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:43,405 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 99 transitions. [2020-01-16 18:30:43,405 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:43,405 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 99 transitions. [2020-01-16 18:30:43,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:43,405 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:43,405 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:43,406 INFO L426 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:43,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:43,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1591588975, now seen corresponding path program 1 times [2020-01-16 18:30:43,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:43,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950644060] [2020-01-16 18:30:43,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:43,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950644060] [2020-01-16 18:30:43,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:43,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:30:43,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502089000] [2020-01-16 18:30:43,422 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:30:43,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:43,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:30:43,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:30:43,423 INFO L87 Difference]: Start difference. First operand 49 states and 99 transitions. Second operand 3 states. [2020-01-16 18:30:43,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:43,426 INFO L93 Difference]: Finished difference Result 41 states and 75 transitions. [2020-01-16 18:30:43,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:30:43,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-01-16 18:30:43,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:43,428 INFO L225 Difference]: With dead ends: 41 [2020-01-16 18:30:43,428 INFO L226 Difference]: Without dead ends: 41 [2020-01-16 18:30:43,428 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 18:30:43,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-01-16 18:30:43,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-01-16 18:30:43,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-01-16 18:30:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 75 transitions. [2020-01-16 18:30:43,431 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 75 transitions. Word has length 13 [2020-01-16 18:30:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:43,432 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 75 transitions. [2020-01-16 18:30:43,432 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:30:43,432 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 75 transitions. [2020-01-16 18:30:43,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:43,432 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:43,433 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:43,433 INFO L426 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:43,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:43,433 INFO L82 PathProgramCache]: Analyzing trace with hash 2065265875, now seen corresponding path program 10 times [2020-01-16 18:30:43,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:43,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395461565] [2020-01-16 18:30:43,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:43,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:43,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395461565] [2020-01-16 18:30:43,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:43,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:43,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957399565] [2020-01-16 18:30:43,555 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:43,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:43,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:43,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:43,556 INFO L87 Difference]: Start difference. First operand 41 states and 75 transitions. Second operand 6 states. [2020-01-16 18:30:43,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:43,590 INFO L93 Difference]: Finished difference Result 54 states and 86 transitions. [2020-01-16 18:30:43,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:43,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:43,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:43,591 INFO L225 Difference]: With dead ends: 54 [2020-01-16 18:30:43,591 INFO L226 Difference]: Without dead ends: 47 [2020-01-16 18:30:43,592 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:43,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-01-16 18:30:43,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2020-01-16 18:30:43,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-01-16 18:30:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 73 transitions. [2020-01-16 18:30:43,595 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 73 transitions. Word has length 13 [2020-01-16 18:30:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:43,595 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 73 transitions. [2020-01-16 18:30:43,595 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 73 transitions. [2020-01-16 18:30:43,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:43,596 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:43,596 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:43,596 INFO L426 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:43,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:43,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1202823469, now seen corresponding path program 11 times [2020-01-16 18:30:43,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:43,597 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198790786] [2020-01-16 18:30:43,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:43,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198790786] [2020-01-16 18:30:43,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:43,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:43,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629276864] [2020-01-16 18:30:43,709 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:43,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:43,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:43,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:43,710 INFO L87 Difference]: Start difference. First operand 40 states and 73 transitions. Second operand 6 states. [2020-01-16 18:30:43,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:43,776 INFO L93 Difference]: Finished difference Result 62 states and 95 transitions. [2020-01-16 18:30:43,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:43,777 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:43,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:43,778 INFO L225 Difference]: With dead ends: 62 [2020-01-16 18:30:43,778 INFO L226 Difference]: Without dead ends: 54 [2020-01-16 18:30:43,779 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:43,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-01-16 18:30:43,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 41. [2020-01-16 18:30:43,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-01-16 18:30:43,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 74 transitions. [2020-01-16 18:30:43,781 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 74 transitions. Word has length 13 [2020-01-16 18:30:43,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:43,782 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 74 transitions. [2020-01-16 18:30:43,782 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:43,782 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 74 transitions. [2020-01-16 18:30:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:43,782 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:43,782 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:43,783 INFO L426 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:43,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:43,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1374394767, now seen corresponding path program 12 times [2020-01-16 18:30:43,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:43,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009281913] [2020-01-16 18:30:43,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:44,049 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 11 [2020-01-16 18:30:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:44,051 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009281913] [2020-01-16 18:30:44,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:44,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:44,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126063744] [2020-01-16 18:30:44,052 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:44,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:44,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:44,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:44,053 INFO L87 Difference]: Start difference. First operand 41 states and 74 transitions. Second operand 6 states. [2020-01-16 18:30:44,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:44,092 INFO L93 Difference]: Finished difference Result 54 states and 85 transitions. [2020-01-16 18:30:44,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:44,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:44,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:44,093 INFO L225 Difference]: With dead ends: 54 [2020-01-16 18:30:44,093 INFO L226 Difference]: Without dead ends: 46 [2020-01-16 18:30:44,093 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:44,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-01-16 18:30:44,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2020-01-16 18:30:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-01-16 18:30:44,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 71 transitions. [2020-01-16 18:30:44,097 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 71 transitions. Word has length 13 [2020-01-16 18:30:44,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:44,098 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 71 transitions. [2020-01-16 18:30:44,098 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:44,098 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 71 transitions. [2020-01-16 18:30:44,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:44,098 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:44,098 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:44,099 INFO L426 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:44,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:44,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1092957581, now seen corresponding path program 13 times [2020-01-16 18:30:44,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:44,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255402264] [2020-01-16 18:30:44,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:44,200 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255402264] [2020-01-16 18:30:44,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:44,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:44,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537770987] [2020-01-16 18:30:44,201 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:44,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:44,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:44,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:44,201 INFO L87 Difference]: Start difference. First operand 39 states and 71 transitions. Second operand 6 states. [2020-01-16 18:30:44,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:44,255 INFO L93 Difference]: Finished difference Result 63 states and 96 transitions. [2020-01-16 18:30:44,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:44,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:44,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:44,256 INFO L225 Difference]: With dead ends: 63 [2020-01-16 18:30:44,257 INFO L226 Difference]: Without dead ends: 56 [2020-01-16 18:30:44,257 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:44,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-01-16 18:30:44,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 39. [2020-01-16 18:30:44,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-01-16 18:30:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 69 transitions. [2020-01-16 18:30:44,261 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 69 transitions. Word has length 13 [2020-01-16 18:30:44,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:44,261 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 69 transitions. [2020-01-16 18:30:44,261 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:44,261 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 69 transitions. [2020-01-16 18:30:44,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:44,262 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:44,262 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:44,262 INFO L426 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:44,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:44,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1035762383, now seen corresponding path program 14 times [2020-01-16 18:30:44,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:44,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628661934] [2020-01-16 18:30:44,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:44,386 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628661934] [2020-01-16 18:30:44,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:44,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:44,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675479194] [2020-01-16 18:30:44,387 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:44,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:44,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:44,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:44,388 INFO L87 Difference]: Start difference. First operand 39 states and 69 transitions. Second operand 6 states. [2020-01-16 18:30:44,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:44,419 INFO L93 Difference]: Finished difference Result 66 states and 99 transitions. [2020-01-16 18:30:44,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:44,420 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:44,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:44,420 INFO L225 Difference]: With dead ends: 66 [2020-01-16 18:30:44,421 INFO L226 Difference]: Without dead ends: 53 [2020-01-16 18:30:44,421 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-01-16 18:30:44,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 36. [2020-01-16 18:30:44,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-01-16 18:30:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 62 transitions. [2020-01-16 18:30:44,424 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 62 transitions. Word has length 13 [2020-01-16 18:30:44,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:44,424 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 62 transitions. [2020-01-16 18:30:44,424 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 62 transitions. [2020-01-16 18:30:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:44,425 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:44,425 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:44,425 INFO L426 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:44,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:44,425 INFO L82 PathProgramCache]: Analyzing trace with hash -237650927, now seen corresponding path program 15 times [2020-01-16 18:30:44,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:44,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408825086] [2020-01-16 18:30:44,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:44,527 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408825086] [2020-01-16 18:30:44,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:44,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:44,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947574817] [2020-01-16 18:30:44,528 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:44,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:44,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:44,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:44,529 INFO L87 Difference]: Start difference. First operand 36 states and 62 transitions. Second operand 6 states. [2020-01-16 18:30:44,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:44,582 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2020-01-16 18:30:44,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:44,582 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:44,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:44,583 INFO L225 Difference]: With dead ends: 54 [2020-01-16 18:30:44,583 INFO L226 Difference]: Without dead ends: 47 [2020-01-16 18:30:44,583 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:44,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-01-16 18:30:44,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2020-01-16 18:30:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-01-16 18:30:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 58 transitions. [2020-01-16 18:30:44,586 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 58 transitions. Word has length 13 [2020-01-16 18:30:44,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:44,586 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 58 transitions. [2020-01-16 18:30:44,586 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:44,586 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 58 transitions. [2020-01-16 18:30:44,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:44,587 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:44,587 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:44,587 INFO L426 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:44,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:44,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1484998923, now seen corresponding path program 16 times [2020-01-16 18:30:44,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:44,588 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988874020] [2020-01-16 18:30:44,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:44,702 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988874020] [2020-01-16 18:30:44,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:44,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:44,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096037532] [2020-01-16 18:30:44,703 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:44,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:44,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:44,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:44,703 INFO L87 Difference]: Start difference. First operand 34 states and 58 transitions. Second operand 6 states. [2020-01-16 18:30:44,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:44,756 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2020-01-16 18:30:44,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:44,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:44,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:44,757 INFO L225 Difference]: With dead ends: 47 [2020-01-16 18:30:44,757 INFO L226 Difference]: Without dead ends: 40 [2020-01-16 18:30:44,758 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:44,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-01-16 18:30:44,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2020-01-16 18:30:44,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-01-16 18:30:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 56 transitions. [2020-01-16 18:30:44,761 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 56 transitions. Word has length 13 [2020-01-16 18:30:44,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:44,761 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 56 transitions. [2020-01-16 18:30:44,761 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:44,761 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 56 transitions. [2020-01-16 18:30:44,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:44,762 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:44,762 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:44,762 INFO L426 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:44,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:44,762 INFO L82 PathProgramCache]: Analyzing trace with hash -633260145, now seen corresponding path program 17 times [2020-01-16 18:30:44,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:44,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030704717] [2020-01-16 18:30:44,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:44,869 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030704717] [2020-01-16 18:30:44,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:44,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:44,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730673004] [2020-01-16 18:30:44,870 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:44,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:44,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:44,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:44,871 INFO L87 Difference]: Start difference. First operand 33 states and 56 transitions. Second operand 6 states. [2020-01-16 18:30:44,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:44,913 INFO L93 Difference]: Finished difference Result 52 states and 78 transitions. [2020-01-16 18:30:44,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:44,914 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:44,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:44,914 INFO L225 Difference]: With dead ends: 52 [2020-01-16 18:30:44,915 INFO L226 Difference]: Without dead ends: 42 [2020-01-16 18:30:44,915 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:44,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-01-16 18:30:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-01-16 18:30:44,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-01-16 18:30:44,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 58 transitions. [2020-01-16 18:30:44,918 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 58 transitions. Word has length 13 [2020-01-16 18:30:44,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:44,918 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 58 transitions. [2020-01-16 18:30:44,918 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 58 transitions. [2020-01-16 18:30:44,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:44,919 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:44,919 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:44,919 INFO L426 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:44,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:44,920 INFO L82 PathProgramCache]: Analyzing trace with hash 225614385, now seen corresponding path program 18 times [2020-01-16 18:30:44,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:44,920 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689232193] [2020-01-16 18:30:44,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:45,033 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689232193] [2020-01-16 18:30:45,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:45,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:45,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911877295] [2020-01-16 18:30:45,034 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:45,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:45,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:45,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:45,034 INFO L87 Difference]: Start difference. First operand 35 states and 58 transitions. Second operand 6 states. [2020-01-16 18:30:45,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:45,062 INFO L93 Difference]: Finished difference Result 41 states and 63 transitions. [2020-01-16 18:30:45,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:45,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:45,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:45,063 INFO L225 Difference]: With dead ends: 41 [2020-01-16 18:30:45,064 INFO L226 Difference]: Without dead ends: 31 [2020-01-16 18:30:45,064 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:45,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-01-16 18:30:45,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-01-16 18:30:45,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-01-16 18:30:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 51 transitions. [2020-01-16 18:30:45,066 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 51 transitions. Word has length 13 [2020-01-16 18:30:45,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:45,067 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 51 transitions. [2020-01-16 18:30:45,067 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:45,067 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-01-16 18:30:45,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:45,067 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:45,067 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:45,068 INFO L426 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:45,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:45,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1836921811, now seen corresponding path program 19 times [2020-01-16 18:30:45,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:45,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704481506] [2020-01-16 18:30:45,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:45,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704481506] [2020-01-16 18:30:45,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:45,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:45,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194538544] [2020-01-16 18:30:45,251 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:45,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:45,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:45,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:45,252 INFO L87 Difference]: Start difference. First operand 31 states and 51 transitions. Second operand 6 states. [2020-01-16 18:30:45,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:45,283 INFO L93 Difference]: Finished difference Result 45 states and 65 transitions. [2020-01-16 18:30:45,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:45,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:45,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:45,284 INFO L225 Difference]: With dead ends: 45 [2020-01-16 18:30:45,284 INFO L226 Difference]: Without dead ends: 37 [2020-01-16 18:30:45,284 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:45,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-01-16 18:30:45,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-01-16 18:30:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-01-16 18:30:45,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 48 transitions. [2020-01-16 18:30:45,286 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 48 transitions. Word has length 13 [2020-01-16 18:30:45,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:45,286 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 48 transitions. [2020-01-16 18:30:45,286 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:45,286 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 48 transitions. [2020-01-16 18:30:45,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:45,287 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:45,287 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:45,287 INFO L426 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:45,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:45,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1599170955, now seen corresponding path program 20 times [2020-01-16 18:30:45,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:45,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133636957] [2020-01-16 18:30:45,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:45,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133636957] [2020-01-16 18:30:45,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:45,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:45,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70000405] [2020-01-16 18:30:45,391 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:45,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:45,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:45,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:45,392 INFO L87 Difference]: Start difference. First operand 31 states and 48 transitions. Second operand 6 states. [2020-01-16 18:30:45,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:45,417 INFO L93 Difference]: Finished difference Result 47 states and 65 transitions. [2020-01-16 18:30:45,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:45,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:45,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:45,418 INFO L225 Difference]: With dead ends: 47 [2020-01-16 18:30:45,418 INFO L226 Difference]: Without dead ends: 32 [2020-01-16 18:30:45,419 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:45,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-01-16 18:30:45,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2020-01-16 18:30:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-01-16 18:30:45,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2020-01-16 18:30:45,420 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 13 [2020-01-16 18:30:45,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:45,420 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2020-01-16 18:30:45,420 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:45,420 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2020-01-16 18:30:45,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:45,421 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:45,421 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:45,421 INFO L426 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:45,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1602738831, now seen corresponding path program 21 times [2020-01-16 18:30:45,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:45,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049215441] [2020-01-16 18:30:45,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:45,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049215441] [2020-01-16 18:30:45,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:45,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:45,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318399240] [2020-01-16 18:30:45,509 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:45,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:45,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:45,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:45,509 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 6 states. [2020-01-16 18:30:45,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:45,545 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-01-16 18:30:45,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:45,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:45,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:45,546 INFO L225 Difference]: With dead ends: 37 [2020-01-16 18:30:45,546 INFO L226 Difference]: Without dead ends: 29 [2020-01-16 18:30:45,547 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:45,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-01-16 18:30:45,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2020-01-16 18:30:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-01-16 18:30:45,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-01-16 18:30:45,548 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 13 [2020-01-16 18:30:45,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:45,549 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-01-16 18:30:45,549 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:45,549 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-01-16 18:30:45,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:45,549 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:45,550 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:45,550 INFO L426 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:45,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:45,550 INFO L82 PathProgramCache]: Analyzing trace with hash 115010229, now seen corresponding path program 22 times [2020-01-16 18:30:45,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:45,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131394832] [2020-01-16 18:30:45,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:45,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:45,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131394832] [2020-01-16 18:30:45,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:45,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:45,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595033189] [2020-01-16 18:30:45,645 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:45,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:45,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:45,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:45,646 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 6 states. [2020-01-16 18:30:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:45,674 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-01-16 18:30:45,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:45,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:45,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:45,675 INFO L225 Difference]: With dead ends: 29 [2020-01-16 18:30:45,675 INFO L226 Difference]: Without dead ends: 22 [2020-01-16 18:30:45,676 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:45,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-01-16 18:30:45,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-01-16 18:30:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-01-16 18:30:45,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2020-01-16 18:30:45,677 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 13 [2020-01-16 18:30:45,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:45,678 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2020-01-16 18:30:45,678 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:45,678 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2020-01-16 18:30:45,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:45,679 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:45,679 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:45,679 INFO L426 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:45,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:45,680 INFO L82 PathProgramCache]: Analyzing trace with hash 111442353, now seen corresponding path program 23 times [2020-01-16 18:30:45,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:45,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900059478] [2020-01-16 18:30:45,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:45,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900059478] [2020-01-16 18:30:45,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:45,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:45,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97883012] [2020-01-16 18:30:45,797 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:45,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:45,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:45,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:45,798 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand 6 states. [2020-01-16 18:30:45,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:45,833 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2020-01-16 18:30:45,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:45,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:45,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:45,834 INFO L225 Difference]: With dead ends: 27 [2020-01-16 18:30:45,834 INFO L226 Difference]: Without dead ends: 17 [2020-01-16 18:30:45,835 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:45,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-01-16 18:30:45,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-01-16 18:30:45,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-01-16 18:30:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-01-16 18:30:45,837 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-01-16 18:30:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:45,838 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-01-16 18:30:45,838 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:45,838 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-01-16 18:30:45,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 18:30:45,838 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:30:45,838 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:30:45,838 INFO L426 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 18:30:45,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:30:45,839 INFO L82 PathProgramCache]: Analyzing trace with hash 970316883, now seen corresponding path program 24 times [2020-01-16 18:30:45,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:30:45,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775898958] [2020-01-16 18:30:45,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:30:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:30:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:30:45,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775898958] [2020-01-16 18:30:45,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:30:45,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-01-16 18:30:45,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363443014] [2020-01-16 18:30:45,951 INFO L458 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-01-16 18:30:45,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:30:45,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-01-16 18:30:45,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-01-16 18:30:45,951 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 6 states. [2020-01-16 18:30:45,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:30:45,972 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-01-16 18:30:45,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-01-16 18:30:45,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-01-16 18:30:45,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:30:45,972 INFO L225 Difference]: With dead ends: 16 [2020-01-16 18:30:45,972 INFO L226 Difference]: Without dead ends: 0 [2020-01-16 18:30:45,973 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-01-16 18:30:45,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-01-16 18:30:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-01-16 18:30:45,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-01-16 18:30:45,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-01-16 18:30:45,974 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-01-16 18:30:45,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:30:45,974 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-01-16 18:30:45,974 INFO L479 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-01-16 18:30:45,974 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-01-16 18:30:45,975 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-01-16 18:30:45,979 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 06:30:45 BasicIcfg [2020-01-16 18:30:45,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 18:30:45,981 INFO L168 Benchmark]: Toolchain (without parser) took 6042.42 ms. Allocated memory was 137.4 MB in the beginning and 292.6 MB in the end (delta: 155.2 MB). Free memory was 118.0 MB in the beginning and 135.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 137.3 MB. Max. memory is 7.1 GB. [2020-01-16 18:30:45,982 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.46 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-01-16 18:30:45,982 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.85 ms. Allocated memory is still 137.4 MB. Free memory was 118.0 MB in the beginning and 116.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-01-16 18:30:45,983 INFO L168 Benchmark]: Boogie Preprocessor took 21.08 ms. Allocated memory is still 137.4 MB. Free memory was 116.3 MB in the beginning and 115.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-01-16 18:30:45,984 INFO L168 Benchmark]: RCFGBuilder took 273.30 ms. Allocated memory is still 137.4 MB. Free memory was 115.0 MB in the beginning and 104.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-01-16 18:30:45,984 INFO L168 Benchmark]: TraceAbstraction took 5706.03 ms. Allocated memory was 137.4 MB in the beginning and 292.6 MB in the end (delta: 155.2 MB). Free memory was 104.4 MB in the beginning and 135.9 MB in the end (delta: -31.5 MB). Peak memory consumption was 123.7 MB. Max. memory is 7.1 GB. [2020-01-16 18:30:45,986 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 0.46 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.85 ms. Allocated memory is still 137.4 MB. Free memory was 118.0 MB in the beginning and 116.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.08 ms. Allocated memory is still 137.4 MB. Free memory was 116.3 MB in the beginning and 115.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 273.30 ms. Allocated memory is still 137.4 MB. Free memory was 115.0 MB in the beginning and 104.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5706.03 ms. Allocated memory was 137.4 MB in the beginning and 292.6 MB in the end (delta: 155.2 MB). Free memory was 104.4 MB in the beginning and 135.9 MB in the end (delta: -31.5 MB). Peak memory consumption was 123.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.1s, 36 ProgramPointsBefore, 30 ProgramPointsAfterwards, 35 TransitionsBefore, 30 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 60 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 66 CheckedPairsTotal, 5 TotalNumberOfCompositions - PositiveResult [Line: 21]: 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 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 5.4s, OverallIterations: 27, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 669 SDtfs, 920 SDslu, 945 SDs, 0 SdLazy, 329 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred 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: 0.1s AutomataMinimizationTime, 27 MinimizatonAttempts, 294 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 351 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 324 ConstructedInterpolants, 0 QuantifiedInterpolants, 42696 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 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...