/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-PN-NoLbe-MCR.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 23:39:40,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 23:39:40,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 23:39:40,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 23:39:40,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 23:39:40,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 23:39:40,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 23:39:40,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 23:39:40,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 23:39:40,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 23:39:40,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 23:39:40,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 23:39:40,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 23:39:40,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 23:39:40,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 23:39:40,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 23:39:40,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 23:39:40,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 23:39:40,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 23:39:40,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 23:39:40,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 23:39:40,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 23:39:40,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 23:39:40,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 23:39:40,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 23:39:40,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-01-16 23:39:40,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-01-16 23:39:40,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-01-16 23:39:40,613 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-PN-NoLbe-MCR.epf [2020-01-16 23:39:40,629 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 23:39:40,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 23:39:40,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 23:39:40,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 23:39:40,631 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 23:39:40,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 23:39:40,632 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 23:39:40,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 23:39:40,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 23:39:40,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 23:39:40,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 23:39:40,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 23:39:40,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 23:39:40,633 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 23:39:40,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 23:39:40,633 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 23:39:40,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 23:39:40,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 23:39:40,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 23:39:40,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 23:39:40,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 23:39:40,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 23:39:40,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 23:39:40,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 23:39:40,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 23:39:40,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 23:39:40,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 23:39:40,636 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-01-16 23:39:40,636 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-01-16 23:39:40,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-01-16 23:39:40,636 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-01-16 23:39:40,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 23:39:40,917 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 23:39:40,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 23:39:40,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 23:39:40,935 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 23:39:40,935 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 23:39:40,936 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl [2020-01-16 23:39:40,936 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl' [2020-01-16 23:39:40,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 23:39:40,969 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 23:39:40,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 23:39:40,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 23:39:40,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 23:39:40,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:39:40" (1/1) ... [2020-01-16 23:39:40,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:39:40" (1/1) ... [2020-01-16 23:39:41,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 23:39:41,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 23:39:41,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 23:39:41,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 23:39:41,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:39:40" (1/1) ... [2020-01-16 23:39:41,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:39:40" (1/1) ... [2020-01-16 23:39:41,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:39:40" (1/1) ... [2020-01-16 23:39:41,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:39:40" (1/1) ... [2020-01-16 23:39:41,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:39:40" (1/1) ... [2020-01-16 23:39:41,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:39:40" (1/1) ... [2020-01-16 23:39:41,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:39:40" (1/1) ... [2020-01-16 23:39:41,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 23:39:41,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 23:39:41,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 23:39:41,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 23:39:41,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:39:40" (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 23:39:41,092 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 23:39:41,092 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 23:39:41,092 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 23:39:41,092 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 23:39:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 23:39:41,093 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 23:39:41,093 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 23:39:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 23:39:41,093 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 23:39:41,094 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 23:39:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 23:39:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 23:39:41,094 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 23:39:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 23:39:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 23:39:41,095 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 23:39:41,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 23:39:41,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 23:39:41,095 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-01-16 23:39:41,095 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-01-16 23:39:41,096 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-01-16 23:39:41,096 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-01-16 23:39:41,096 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-01-16 23:39:41,096 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-01-16 23:39:41,096 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2020-01-16 23:39:41,097 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2020-01-16 23:39:41,097 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2020-01-16 23:39:41,097 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2020-01-16 23:39:41,097 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2020-01-16 23:39:41,097 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2020-01-16 23:39:41,098 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 23:39:41,352 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 23:39:41,352 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 23:39:41,354 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 11:39:41 BoogieIcfgContainer [2020-01-16 23:39:41,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 23:39:41,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 23:39:41,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 23:39:41,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 23:39:41,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:39:40" (1/2) ... [2020-01-16 23:39:41,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621a09fa and model type example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 11:39:41, skipping insertion in model container [2020-01-16 23:39:41,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 11:39:41" (2/2) ... [2020-01-16 23:39:41,361 INFO L109 eAbstractionObserver]: Analyzing ICFG example_9.bpl [2020-01-16 23:39:41,373 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 23:39:41,380 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 23:39:41,381 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 23:39:41,609 INFO L250 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-01-16 23:39:41,627 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 23:39:41,628 INFO L375 AbstractCegarLoop]: Hoare is false [2020-01-16 23:39:41,628 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 23:39:41,628 INFO L377 AbstractCegarLoop]: Backedges is MCR [2020-01-16 23:39:41,628 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 23:39:41,629 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 23:39:41,629 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 23:39:41,629 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 23:39:42,653 INFO L129 PetriNetUnfolder]: 1793/2331 cut-off events. [2020-01-16 23:39:42,653 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2020-01-16 23:39:42,654 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:39:42,655 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:39:42,656 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:39:42,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:39:42,669 INFO L82 PathProgramCache]: Analyzing trace with hash 115814235, now seen corresponding path program 1 times [2020-01-16 23:39:42,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:39:42,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146675733] [2020-01-16 23:39:42,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:39:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:39:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:39:42,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146675733] [2020-01-16 23:39:42,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:39:42,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:39:42,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1207461661] [2020-01-16 23:39:42,918 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:39:42,937 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:39:52,747 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-01-16 23:39:52,748 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:39:53,043 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 12 times. [2020-01-16 23:39:53,044 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:39:53,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:39:53,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:39:53,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:39:53,073 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-01-16 23:39:53,076 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 120 transitions. Second operand 3 states. [2020-01-16 23:39:53,076 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:39:53,077 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-01-16 23:39:53,080 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:39:54,452 INFO L129 PetriNetUnfolder]: 1729/2261 cut-off events. [2020-01-16 23:39:54,453 INFO L130 PetriNetUnfolder]: For 2753/2753 co-relation queries the response was YES. [2020-01-16 23:39:54,497 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4769 conditions, 2261 events. 1729/2261 cut-off events. For 2753/2753 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8280 event pairs. 9/2269 useless extension candidates. Maximal degree in co-relation 2178. Up to 630 conditions per place. [2020-01-16 23:39:54,499 INFO L123 encePairwiseOnDemand]: 117/120 looper letters, 7 selfloop transitions, 3 changer transitions [2020-01-16 23:39:54,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:39:54,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:39:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-01-16 23:39:54,513 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-01-16 23:39:54,514 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-01-16 23:39:54,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-01-16 23:39:54,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:39:54,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-01-16 23:39:54,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:39:54,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:39:54,534 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:39:54,537 INFO L174 Difference]: Start difference. First operand has 76 places, 120 transitions. Second operand 3 states and 340 transitions. [2020-01-16 23:39:54,539 INFO L199 Difference]: Finished difference. Result has 78 places, 109 transitions [2020-01-16 23:39:54,542 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=78, PETRI_TRANSITIONS=109} [2020-01-16 23:39:54,544 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 78 places, 109 transitions [2020-01-16 23:39:54,544 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 78 places, 109 transitions [2020-01-16 23:39:55,427 INFO L129 PetriNetUnfolder]: 1729/2261 cut-off events. [2020-01-16 23:39:55,427 INFO L130 PetriNetUnfolder]: For 2232/2232 co-relation queries the response was YES. [2020-01-16 23:39:55,456 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4522 conditions, 2261 events. 1729/2261 cut-off events. For 2232/2232 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8577 event pairs. 0/2260 useless extension candidates. Maximal degree in co-relation 4501. Up to 630 conditions per place. [2020-01-16 23:39:55,468 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 11 of 78 places, 0 of 109 transitions, 2 of 484 flow. [2020-01-16 23:39:55,469 INFO L478 AbstractCegarLoop]: Abstraction has has 67 places, 109 transitions [2020-01-16 23:39:55,470 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:39:56,296 INFO L129 PetriNetUnfolder]: 1729/2258 cut-off events. [2020-01-16 23:39:56,297 INFO L130 PetriNetUnfolder]: For 2232/2232 co-relation queries the response was YES. [2020-01-16 23:39:56,297 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:39:56,298 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:39:56,298 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:39:56,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:39:56,299 INFO L82 PathProgramCache]: Analyzing trace with hash 812546869, now seen corresponding path program 1 times [2020-01-16 23:39:56,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:39:56,300 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981580061] [2020-01-16 23:39:56,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:39:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:39:56,385 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 23:39:56,386 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981580061] [2020-01-16 23:39:56,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:39:56,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:39:56,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1296298897] [2020-01-16 23:39:56,387 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:39:56,392 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:40:03,434 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-01-16 23:40:03,434 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:40:03,845 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 12 times. [2020-01-16 23:40:03,849 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:40:03,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:40:03,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:40:03,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:40:03,856 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-01-16 23:40:03,858 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 109 transitions. Second operand 3 states. [2020-01-16 23:40:03,858 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:40:03,859 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-01-16 23:40:03,859 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:40:04,475 INFO L129 PetriNetUnfolder]: 1232/1672 cut-off events. [2020-01-16 23:40:04,476 INFO L130 PetriNetUnfolder]: For 2225/2225 co-relation queries the response was YES. [2020-01-16 23:40:04,498 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3507 conditions, 1672 events. 1232/1672 cut-off events. For 2225/2225 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6442 event pairs. 85/1756 useless extension candidates. Maximal degree in co-relation 1964. Up to 504 conditions per place. [2020-01-16 23:40:04,499 INFO L123 encePairwiseOnDemand]: 115/120 looper letters, 5 selfloop transitions, 5 changer transitions [2020-01-16 23:40:04,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:40:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:40:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-01-16 23:40:04,502 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-01-16 23:40:04,504 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-01-16 23:40:04,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-01-16 23:40:04,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:40:04,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-01-16 23:40:04,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:40:04,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:40:04,526 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:40:04,526 INFO L174 Difference]: Start difference. First operand has 67 places, 109 transitions. Second operand 3 states and 340 transitions. [2020-01-16 23:40:04,531 INFO L199 Difference]: Finished difference. Result has 69 places, 105 transitions [2020-01-16 23:40:04,532 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=69, PETRI_TRANSITIONS=105} [2020-01-16 23:40:04,533 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 69 places, 105 transitions [2020-01-16 23:40:04,534 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 69 places, 105 transitions [2020-01-16 23:40:05,048 INFO L129 PetriNetUnfolder]: 1232/1672 cut-off events. [2020-01-16 23:40:05,049 INFO L130 PetriNetUnfolder]: For 1644/1644 co-relation queries the response was YES. [2020-01-16 23:40:05,068 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3344 conditions, 1672 events. 1232/1672 cut-off events. For 1644/1644 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 6411 event pairs. 0/1671 useless extension candidates. Maximal degree in co-relation 3316. Up to 504 conditions per place. [2020-01-16 23:40:05,070 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 69 places, 0 of 105 transitions, 1 of 464 flow. [2020-01-16 23:40:05,071 INFO L478 AbstractCegarLoop]: Abstraction has has 68 places, 105 transitions [2020-01-16 23:40:05,071 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:40:05,501 INFO L129 PetriNetUnfolder]: 1232/1669 cut-off events. [2020-01-16 23:40:05,501 INFO L130 PetriNetUnfolder]: For 1644/1644 co-relation queries the response was YES. [2020-01-16 23:40:05,501 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:40:05,501 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:40:05,502 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:40:05,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:40:05,503 INFO L82 PathProgramCache]: Analyzing trace with hash -307678727, now seen corresponding path program 1 times [2020-01-16 23:40:05,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:40:05,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126630315] [2020-01-16 23:40:05,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:40:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:40:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:40:05,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126630315] [2020-01-16 23:40:05,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:40:05,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:40:05,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1395982117] [2020-01-16 23:40:05,568 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:40:05,573 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:40:11,538 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-01-16 23:40:11,538 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:40:14,309 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 12 times. [2020-01-16 23:40:14,310 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:40:14,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:40:14,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:40:14,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:40:14,311 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-01-16 23:40:14,312 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 105 transitions. Second operand 3 states. [2020-01-16 23:40:14,312 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:40:14,312 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-01-16 23:40:14,312 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:40:14,445 INFO L129 PetriNetUnfolder]: 447/670 cut-off events. [2020-01-16 23:40:14,445 INFO L130 PetriNetUnfolder]: For 1189/1189 co-relation queries the response was YES. [2020-01-16 23:40:14,453 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1350 conditions, 670 events. 447/670 cut-off events. For 1189/1189 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2424 event pairs. 176/845 useless extension candidates. Maximal degree in co-relation 1267. Up to 168 conditions per place. [2020-01-16 23:40:14,453 INFO L123 encePairwiseOnDemand]: 112/120 looper letters, 2 selfloop transitions, 8 changer transitions [2020-01-16 23:40:14,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:40:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:40:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-01-16 23:40:14,455 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-01-16 23:40:14,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-01-16 23:40:14,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-01-16 23:40:14,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:40:14,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-01-16 23:40:14,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:40:14,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:40:14,457 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:40:14,457 INFO L174 Difference]: Start difference. First operand has 68 places, 105 transitions. Second operand 3 states and 340 transitions. [2020-01-16 23:40:14,458 INFO L199 Difference]: Finished difference. Result has 70 places, 98 transitions [2020-01-16 23:40:14,459 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=70, PETRI_TRANSITIONS=98} [2020-01-16 23:40:14,459 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 70 places, 98 transitions [2020-01-16 23:40:14,459 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 98 transitions [2020-01-16 23:40:14,565 INFO L129 PetriNetUnfolder]: 447/670 cut-off events. [2020-01-16 23:40:14,565 INFO L130 PetriNetUnfolder]: For 643/643 co-relation queries the response was YES. [2020-01-16 23:40:14,573 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 670 events. 447/670 cut-off events. For 643/643 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2385 event pairs. 0/669 useless extension candidates. Maximal degree in co-relation 1303. Up to 168 conditions per place. [2020-01-16 23:40:14,574 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 70 places, 0 of 98 transitions, 1 of 430 flow. [2020-01-16 23:40:14,575 INFO L478 AbstractCegarLoop]: Abstraction has has 69 places, 98 transitions [2020-01-16 23:40:14,575 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:40:14,679 INFO L129 PetriNetUnfolder]: 447/667 cut-off events. [2020-01-16 23:40:14,680 INFO L130 PetriNetUnfolder]: For 643/643 co-relation queries the response was YES. [2020-01-16 23:40:14,680 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:40:14,680 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:40:14,680 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:40:14,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:40:14,681 INFO L82 PathProgramCache]: Analyzing trace with hash 539389109, now seen corresponding path program 1 times [2020-01-16 23:40:14,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:40:14,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563418081] [2020-01-16 23:40:14,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:40:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:40:14,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:40:14,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563418081] [2020-01-16 23:40:14,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:40:14,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:40:14,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [366560653] [2020-01-16 23:40:14,726 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:40:14,730 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:40:21,908 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-01-16 23:40:21,908 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:40:22,095 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 12 times. [2020-01-16 23:40:22,095 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:40:22,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:40:22,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:40:22,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:40:22,097 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-01-16 23:40:22,097 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 98 transitions. Second operand 3 states. [2020-01-16 23:40:22,097 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:40:22,098 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-01-16 23:40:22,098 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:40:22,172 INFO L129 PetriNetUnfolder]: 155/281 cut-off events. [2020-01-16 23:40:22,173 INFO L130 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2020-01-16 23:40:22,178 INFO L76 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 281 events. 155/281 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 908 event pairs. 72/352 useless extension candidates. Maximal degree in co-relation 497. Up to 60 conditions per place. [2020-01-16 23:40:22,180 INFO L123 encePairwiseOnDemand]: 113/120 looper letters, 3 selfloop transitions, 7 changer transitions [2020-01-16 23:40:22,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:40:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:40:22,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-01-16 23:40:22,182 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-01-16 23:40:22,182 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-01-16 23:40:22,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-01-16 23:40:22,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:40:22,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-01-16 23:40:22,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:40:22,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:40:22,186 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:40:22,187 INFO L174 Difference]: Start difference. First operand has 69 places, 98 transitions. Second operand 3 states and 340 transitions. [2020-01-16 23:40:22,188 INFO L199 Difference]: Finished difference. Result has 71 places, 92 transitions [2020-01-16 23:40:22,188 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=401, PETRI_PLACES=71, PETRI_TRANSITIONS=92} [2020-01-16 23:40:22,189 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 71 places, 92 transitions [2020-01-16 23:40:22,189 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 71 places, 92 transitions [2020-01-16 23:40:22,236 INFO L129 PetriNetUnfolder]: 155/281 cut-off events. [2020-01-16 23:40:22,236 INFO L130 PetriNetUnfolder]: For 255/255 co-relation queries the response was YES. [2020-01-16 23:40:22,241 INFO L76 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 281 events. 155/281 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 889 event pairs. 0/280 useless extension candidates. Maximal degree in co-relation 528. Up to 60 conditions per place. [2020-01-16 23:40:22,245 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 71 places, 0 of 92 transitions, 1 of 401 flow. [2020-01-16 23:40:22,251 INFO L478 AbstractCegarLoop]: Abstraction has has 70 places, 92 transitions [2020-01-16 23:40:22,251 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:40:22,285 INFO L129 PetriNetUnfolder]: 155/278 cut-off events. [2020-01-16 23:40:22,285 INFO L130 PetriNetUnfolder]: For 255/255 co-relation queries the response was YES. [2020-01-16 23:40:22,286 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:40:22,288 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:40:22,288 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:40:22,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:40:22,289 INFO L82 PathProgramCache]: Analyzing trace with hash -234081083, now seen corresponding path program 1 times [2020-01-16 23:40:22,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:40:22,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968380261] [2020-01-16 23:40:22,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:40:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:40:22,345 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 23:40:22,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968380261] [2020-01-16 23:40:22,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:40:22,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:40:22,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1707886088] [2020-01-16 23:40:22,347 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:40:22,351 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:40:30,611 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-01-16 23:40:30,611 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:40:30,809 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 12 times. [2020-01-16 23:40:30,810 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:40:30,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:40:30,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:40:30,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:40:30,812 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-01-16 23:40:30,812 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 92 transitions. Second operand 3 states. [2020-01-16 23:40:30,812 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:40:30,812 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-01-16 23:40:30,813 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:40:30,895 INFO L129 PetriNetUnfolder]: 109/220 cut-off events. [2020-01-16 23:40:30,895 INFO L130 PetriNetUnfolder]: For 276/276 co-relation queries the response was YES. [2020-01-16 23:40:30,899 INFO L76 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 220 events. 109/220 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 702 event pairs. 11/230 useless extension candidates. Maximal degree in co-relation 390. Up to 45 conditions per place. [2020-01-16 23:40:30,900 INFO L123 encePairwiseOnDemand]: 116/120 looper letters, 6 selfloop transitions, 4 changer transitions [2020-01-16 23:40:30,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:40:30,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:40:30,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-01-16 23:40:30,902 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-01-16 23:40:30,903 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-01-16 23:40:30,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-01-16 23:40:30,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:40:30,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-01-16 23:40:30,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:40:30,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:40:30,906 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:40:30,907 INFO L174 Difference]: Start difference. First operand has 70 places, 92 transitions. Second operand 3 states and 340 transitions. [2020-01-16 23:40:30,908 INFO L199 Difference]: Finished difference. Result has 72 places, 89 transitions [2020-01-16 23:40:30,908 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=72, PETRI_TRANSITIONS=89} [2020-01-16 23:40:30,910 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 72 places, 89 transitions [2020-01-16 23:40:30,910 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 72 places, 89 transitions [2020-01-16 23:40:30,946 INFO L129 PetriNetUnfolder]: 109/220 cut-off events. [2020-01-16 23:40:30,946 INFO L130 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2020-01-16 23:40:30,950 INFO L76 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 220 events. 109/220 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 680 event pairs. 0/219 useless extension candidates. Maximal degree in co-relation 415. Up to 45 conditions per place. [2020-01-16 23:40:30,952 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 72 places, 0 of 89 transitions, 1 of 387 flow. [2020-01-16 23:40:30,952 INFO L478 AbstractCegarLoop]: Abstraction has has 71 places, 89 transitions [2020-01-16 23:40:30,953 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:40:30,988 INFO L129 PetriNetUnfolder]: 109/217 cut-off events. [2020-01-16 23:40:30,988 INFO L130 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2020-01-16 23:40:30,988 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:40:30,989 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:40:30,989 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:40:30,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:40:30,989 INFO L82 PathProgramCache]: Analyzing trace with hash -558528507, now seen corresponding path program 1 times [2020-01-16 23:40:30,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:40:30,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445877320] [2020-01-16 23:40:30,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:40:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:40:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:40:31,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445877320] [2020-01-16 23:40:31,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:40:31,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:40:31,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1135511083] [2020-01-16 23:40:31,031 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:40:31,034 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:40:37,236 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-01-16 23:40:37,237 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:40:37,351 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 6 times. [2020-01-16 23:40:37,351 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:40:37,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:40:37,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:40:37,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:40:37,353 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-01-16 23:40:37,353 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 89 transitions. Second operand 3 states. [2020-01-16 23:40:37,353 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:40:37,353 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-01-16 23:40:37,353 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:40:37,393 INFO L129 PetriNetUnfolder]: 38/114 cut-off events. [2020-01-16 23:40:37,393 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2020-01-16 23:40:37,395 INFO L76 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 114 events. 38/114 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 300 event pairs. 16/129 useless extension candidates. Maximal degree in co-relation 163. Up to 16 conditions per place. [2020-01-16 23:40:37,395 INFO L123 encePairwiseOnDemand]: 114/120 looper letters, 4 selfloop transitions, 6 changer transitions [2020-01-16 23:40:37,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:40:37,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:40:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-01-16 23:40:37,397 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-01-16 23:40:37,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-01-16 23:40:37,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-01-16 23:40:37,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:40:37,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-01-16 23:40:37,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:40:37,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:40:37,400 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:40:37,400 INFO L174 Difference]: Start difference. First operand has 71 places, 89 transitions. Second operand 3 states and 340 transitions. [2020-01-16 23:40:37,401 INFO L199 Difference]: Finished difference. Result has 73 places, 84 transitions [2020-01-16 23:40:37,401 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=73, PETRI_TRANSITIONS=84} [2020-01-16 23:40:37,402 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 73 places, 84 transitions [2020-01-16 23:40:37,402 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 73 places, 84 transitions [2020-01-16 23:40:37,417 INFO L129 PetriNetUnfolder]: 38/114 cut-off events. [2020-01-16 23:40:37,417 INFO L130 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2020-01-16 23:40:37,419 INFO L76 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 114 events. 38/114 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 289 event pairs. 0/113 useless extension candidates. Maximal degree in co-relation 197. Up to 16 conditions per place. [2020-01-16 23:40:37,420 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 73 places, 0 of 84 transitions, 1 of 363 flow. [2020-01-16 23:40:37,420 INFO L478 AbstractCegarLoop]: Abstraction has has 72 places, 84 transitions [2020-01-16 23:40:37,420 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:40:37,434 INFO L129 PetriNetUnfolder]: 38/111 cut-off events. [2020-01-16 23:40:37,434 INFO L130 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2020-01-16 23:40:37,434 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:40:37,434 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:40:37,435 INFO L426 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:40:37,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:40:37,435 INFO L82 PathProgramCache]: Analyzing trace with hash -2027560455, now seen corresponding path program 1 times [2020-01-16 23:40:37,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:40:37,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382825506] [2020-01-16 23:40:37,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:40:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:40:37,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:40:37,458 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382825506] [2020-01-16 23:40:37,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:40:37,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:40:37,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1256268988] [2020-01-16 23:40:37,459 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:40:37,464 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:40:43,850 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-01-16 23:40:43,851 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:40:43,965 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 8 times. [2020-01-16 23:40:43,966 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:40:43,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:40:43,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:40:43,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:40:43,967 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-01-16 23:40:43,967 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 84 transitions. Second operand 3 states. [2020-01-16 23:40:43,967 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:40:43,967 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-01-16 23:40:43,967 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:40:44,008 INFO L129 PetriNetUnfolder]: 36/111 cut-off events. [2020-01-16 23:40:44,008 INFO L130 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2020-01-16 23:40:44,009 INFO L76 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 111 events. 36/111 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 292 event pairs. 1/111 useless extension candidates. Maximal degree in co-relation 157. Up to 16 conditions per place. [2020-01-16 23:40:44,010 INFO L123 encePairwiseOnDemand]: 118/120 looper letters, 8 selfloop transitions, 2 changer transitions [2020-01-16 23:40:44,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:40:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:40:44,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-01-16 23:40:44,011 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-01-16 23:40:44,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-01-16 23:40:44,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-01-16 23:40:44,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:40:44,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-01-16 23:40:44,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:40:44,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:40:44,015 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:40:44,015 INFO L174 Difference]: Start difference. First operand has 72 places, 84 transitions. Second operand 3 states and 340 transitions. [2020-01-16 23:40:44,016 INFO L199 Difference]: Finished difference. Result has 74 places, 83 transitions [2020-01-16 23:40:44,016 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=359, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2020-01-16 23:40:44,016 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 74 places, 83 transitions [2020-01-16 23:40:44,016 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 74 places, 83 transitions [2020-01-16 23:40:44,029 INFO L129 PetriNetUnfolder]: 36/111 cut-off events. [2020-01-16 23:40:44,029 INFO L130 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2020-01-16 23:40:44,030 INFO L76 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 111 events. 36/111 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 277 event pairs. 0/110 useless extension candidates. Maximal degree in co-relation 203. Up to 16 conditions per place. [2020-01-16 23:40:44,031 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 74 places, 0 of 83 transitions, 1 of 359 flow. [2020-01-16 23:40:44,032 INFO L478 AbstractCegarLoop]: Abstraction has has 73 places, 83 transitions [2020-01-16 23:40:44,032 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:40:44,046 INFO L129 PetriNetUnfolder]: 36/108 cut-off events. [2020-01-16 23:40:44,046 INFO L130 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2020-01-16 23:40:44,047 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:40:44,047 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:40:44,047 INFO L426 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:40:44,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:40:44,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1017614231, now seen corresponding path program 1 times [2020-01-16 23:40:44,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:40:44,049 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017552817] [2020-01-16 23:40:44,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:40:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:40:44,087 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 23:40:44,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017552817] [2020-01-16 23:40:44,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:40:44,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:40:44,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1941064865] [2020-01-16 23:40:44,088 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:40:44,091 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:40:49,878 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-01-16 23:40:49,878 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:40:49,996 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 16 times. [2020-01-16 23:40:49,996 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 23:40:49,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:40:49,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 23:40:49,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 23:40:49,999 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2020-01-16 23:40:49,999 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 83 transitions. Second operand 3 states. [2020-01-16 23:40:49,999 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:40:49,999 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2020-01-16 23:40:49,999 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-01-16 23:40:50,016 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2020-01-16 23:40:50,017 INFO L130 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2020-01-16 23:40:50,017 INFO L76 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 39 events. 0/39 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs. 8/46 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-01-16 23:40:50,018 INFO L123 encePairwiseOnDemand]: 111/120 looper letters, 1 selfloop transitions, 9 changer transitions [2020-01-16 23:40:50,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 23:40:50,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-01-16 23:40:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2020-01-16 23:40:50,019 INFO L434 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-01-16 23:40:50,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2020-01-16 23:40:50,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2020-01-16 23:40:50,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-01-16 23:40:50,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2020-01-16 23:40:50,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-01-16 23:40:50,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-01-16 23:40:50,021 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-01-16 23:40:50,021 INFO L174 Difference]: Start difference. First operand has 73 places, 83 transitions. Second operand 3 states and 340 transitions. [2020-01-16 23:40:50,022 INFO L199 Difference]: Finished difference. Result has 75 places, 39 transitions [2020-01-16 23:40:50,022 INFO L284 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=75, PETRI_TRANSITIONS=39} [2020-01-16 23:40:50,022 INFO L115 RemoveUnreachable]: Start removeUnreachable. Operand has 75 places, 39 transitions [2020-01-16 23:40:50,022 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 75 places, 39 transitions [2020-01-16 23:40:50,028 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2020-01-16 23:40:50,028 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2020-01-16 23:40:50,029 INFO L76 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 39 events. 0/39 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs. 0/38 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-01-16 23:40:50,029 INFO L126 RemoveUnreachable]: Finished removeUnreachable. Removed 1 of 75 places, 0 of 39 transitions, 1 of 140 flow. [2020-01-16 23:40:50,029 INFO L478 AbstractCegarLoop]: Abstraction has has 74 places, 39 transitions [2020-01-16 23:40:50,029 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 23:40:50,034 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2020-01-16 23:40:50,034 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2020-01-16 23:40:50,035 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:40:50,035 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:40:50,035 INFO L426 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 23:40:50,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:40:50,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1839900069, now seen corresponding path program 1 times [2020-01-16 23:40:50,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:40:50,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623098309] [2020-01-16 23:40:50,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:40:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:40:50,720 WARN L192 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 27 [2020-01-16 23:40:50,880 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 23:40:51,035 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 23:40:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:40:51,051 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623098309] [2020-01-16 23:40:51,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:40:51,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 23:40:51,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1855389124] [2020-01-16 23:40:51,052 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:40:51,056 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 23:40:57,398 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 39366 states and 236197 transitions. [2020-01-16 23:40:57,399 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 23:49:43,558 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 1945 times. [2020-01-16 23:49:43,558 INFO L458 AbstractCegarLoop]: Interpolant automaton has 999 states [2020-01-16 23:49:43,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 23:49:43,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 999 interpolants. [2020-01-16 23:49:43,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39223, Invalid=957779, Unknown=0, NotChecked=0, Total=997002 [2020-01-16 23:49:43,659 INFO L387 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 120 [2020-01-16 23:49:43,674 INFO L91 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 39 transitions. Second operand 999 states. [2020-01-16 23:49:43,674 INFO L100 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-01-16 23:49:43,674 INFO L101 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 120 [2020-01-16 23:49:43,675 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2020-01-16 23:52:53,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-01-16 23:52:53,065 WARN L543 AbstractCegarLoop]: Verification canceled [2020-01-16 23:52:53,069 WARN L227 ceAbstractionStarter]: Timeout [2020-01-16 23:52:53,070 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 11:52:53 BasicIcfg [2020-01-16 23:52:53,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 23:52:53,072 INFO L168 Benchmark]: Toolchain (without parser) took 792103.29 ms. Allocated memory was 145.2 MB in the beginning and 3.5 GB in the end (delta: 3.4 GB). Free memory was 119.0 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2020-01-16 23:52:53,073 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 23:52:53,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.83 ms. Allocated memory is still 145.2 MB. Free memory was 118.8 MB in the beginning and 117.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-01-16 23:52:53,074 INFO L168 Benchmark]: Boogie Preprocessor took 19.97 ms. Allocated memory is still 145.2 MB. Free memory was 117.2 MB in the beginning and 115.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-01-16 23:52:53,075 INFO L168 Benchmark]: RCFGBuilder took 329.03 ms. Allocated memory is still 145.2 MB. Free memory was 115.9 MB in the beginning and 102.1 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-01-16 23:52:53,076 INFO L168 Benchmark]: TraceAbstraction took 791715.00 ms. Allocated memory was 145.2 MB in the beginning and 3.5 GB in the end (delta: 3.4 GB). Free memory was 101.9 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2020-01-16 23:52:53,079 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 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.83 ms. Allocated memory is still 145.2 MB. Free memory was 118.8 MB in the beginning and 117.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.97 ms. Allocated memory is still 145.2 MB. Free memory was 117.2 MB in the beginning and 115.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 329.03 ms. Allocated memory is still 145.2 MB. Free memory was 115.9 MB in the beginning and 102.1 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 791715.00 ms. Allocated memory was 145.2 MB in the beginning and 3.5 GB in the end (delta: 3.4 GB). Free memory was 101.9 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 31). Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 1081 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 791.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 192.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 175 SDtfs, 190 SDslu, 54612 SDs, 0 SdLazy, 107654 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 95.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2192 GetRequests, 1104 SyntacticMatches, 0 SemanticMatches, 1087 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469608 ImplicationChecksByTransitivity, 603.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred 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: 1.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 333 NumberOfCodeBlocks, 333 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 324 ConstructedInterpolants, 0 QuantifiedInterpolants, 52524 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 could not prove your program: Timeout Completed graceful shutdown