/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-SemanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-10 23:00:04,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 23:00:04,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 23:00:04,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 23:00:04,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 23:00:04,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 23:00:04,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 23:00:04,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 23:00:04,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 23:00:04,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 23:00:04,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 23:00:04,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 23:00:04,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 23:00:04,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 23:00:04,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 23:00:04,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 23:00:04,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 23:00:04,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 23:00:04,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 23:00:04,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 23:00:04,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 23:00:04,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 23:00:04,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 23:00:04,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 23:00:04,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-10 23:00:04,685 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-SemanticLbe.epf [2020-02-10 23:00:04,700 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 23:00:04,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 23:00:04,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 23:00:04,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 23:00:04,702 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 23:00:04,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 23:00:04,702 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 23:00:04,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 23:00:04,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 23:00:04,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 23:00:04,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 23:00:04,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 23:00:04,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 23:00:04,704 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 23:00:04,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 23:00:04,704 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 23:00:04,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 23:00:04,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 23:00:04,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 23:00:04,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 23:00:04,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 23:00:04,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:00:04,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 23:00:04,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 23:00:04,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 23:00:04,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 23:00:04,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 23:00:04,707 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-10 23:00:04,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 23:00:04,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 23:00:04,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 23:00:05,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 23:00:05,001 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 23:00:05,002 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 23:00:05,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2020-02-10 23:00:05,003 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2020-02-10 23:00:05,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 23:00:05,037 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 23:00:05,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 23:00:05,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 23:00:05,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 23:00:05,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 23:00:05,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 23:00:05,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 23:00:05,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 23:00:05,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/1) ... [2020-02-10 23:00:05,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 23:00:05,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 23:00:05,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 23:00:05,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 23:00:05,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (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 [2020-02-10 23:00:05,170 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 23:00:05,170 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 23:00:05,170 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 23:00:05,172 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 23:00:05,172 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 23:00:05,172 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 23:00:05,173 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-10 23:00:05,173 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-10 23:00:05,173 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-10 23:00:05,173 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-02-10 23:00:05,173 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-02-10 23:00:05,174 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-02-10 23:00:05,174 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 23:00:05,174 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 23:00:05,174 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 23:00:05,174 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 23:00:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 23:00:05,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 23:00:05,175 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-02-10 23:00:05,175 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-02-10 23:00:05,176 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-02-10 23:00:05,177 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-10 23:00:05,401 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 23:00:05,402 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 23:00:05,407 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:00:05 BoogieIcfgContainer [2020-02-10 23:00:05,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 23:00:05,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 23:00:05,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 23:00:05,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 23:00:05,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:05" (1/2) ... [2020-02-10 23:00:05,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37646475 and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:00:05, skipping insertion in model container [2020-02-10 23:00:05,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:00:05" (2/2) ... [2020-02-10 23:00:05,417 INFO L109 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2020-02-10 23:00:05,430 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 23:00:05,438 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 23:00:05,439 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 23:00:05,634 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-02-10 23:00:05,655 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 23:00:05,656 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-10 23:00:05,656 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 23:00:05,656 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-02-10 23:00:05,656 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 23:00:05,656 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 23:00:05,656 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 23:00:05,657 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 23:00:05,670 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 52 places, 63 transitions [2020-02-10 23:00:05,828 INFO L129 PetriNetUnfolder]: 129/213 cut-off events. [2020-02-10 23:00:05,828 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2020-02-10 23:00:05,841 INFO L76 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 213 events. 129/213 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 773 event pairs. 0/212 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2020-02-10 23:00:05,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 63 transitions [2020-02-10 23:00:05,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 55 transitions [2020-02-10 23:00:05,858 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 55 transitions [2020-02-10 23:00:05,858 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 55 transitions [2020-02-10 23:00:05,911 INFO L129 PetriNetUnfolder]: 129/211 cut-off events. [2020-02-10 23:00:05,911 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2020-02-10 23:00:05,915 INFO L76 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 211 events. 129/211 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 680 event pairs. 0/211 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2020-02-10 23:00:05,921 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 55 transitions [2020-02-10 23:00:06,005 INFO L129 PetriNetUnfolder]: 129/211 cut-off events. [2020-02-10 23:00:06,005 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2020-02-10 23:00:06,008 INFO L76 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 211 events. 129/211 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 680 event pairs. 0/211 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2020-02-10 23:00:06,012 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 780 [2020-02-10 23:00:06,013 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-02-10 23:00:06,096 INFO L206 etLargeBlockEncoding]: Checked pairs total: 225 [2020-02-10 23:00:06,097 INFO L214 etLargeBlockEncoding]: Total number of compositions: 6 [2020-02-10 23:00:06,097 INFO L160 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 244 [2020-02-10 23:00:06,130 INFO L129 PetriNetUnfolder]: 129/204 cut-off events. [2020-02-10 23:00:06,130 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2020-02-10 23:00:06,131 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:06,132 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:06,132 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:06,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:06,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1634021592, now seen corresponding path program 1 times [2020-02-10 23:00:06,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:06,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65611605] [2020-02-10 23:00:06,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:06,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:06,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65611605] [2020-02-10 23:00:06,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:06,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:06,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300657523] [2020-02-10 23:00:06,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:06,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:06,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:06,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:06,337 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 69 [2020-02-10 23:00:06,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 49 transitions. Second operand 3 states. [2020-02-10 23:00:06,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:06,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 69 [2020-02-10 23:00:06,342 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:06,408 INFO L129 PetriNetUnfolder]: 124/199 cut-off events. [2020-02-10 23:00:06,409 INFO L130 PetriNetUnfolder]: For 252/252 co-relation queries the response was YES. [2020-02-10 23:00:06,410 INFO L76 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 199 events. 124/199 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 666 event pairs. 1/200 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2020-02-10 23:00:06,415 INFO L145 encePairwiseOnDemand]: 67/69 looper letters, 5 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2020-02-10 23:00:06,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:06,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2020-02-10 23:00:06,431 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9323671497584541 [2020-02-10 23:00:06,432 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2020-02-10 23:00:06,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2020-02-10 23:00:06,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:06,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2020-02-10 23:00:06,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:06,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:06,447 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:06,449 INFO L178 Difference]: Start difference. First operand has 38 places, 49 transitions. Second operand 3 states and 193 transitions. [2020-02-10 23:00:06,450 INFO L206 Difference]: Finished difference. Result has 40 places, 48 transitions [2020-02-10 23:00:06,453 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=40, PETRI_TRANSITIONS=48} [2020-02-10 23:00:06,454 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 40 places, 48 transitions [2020-02-10 23:00:06,476 INFO L129 PetriNetUnfolder]: 124/199 cut-off events. [2020-02-10 23:00:06,476 INFO L130 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2020-02-10 23:00:06,477 INFO L76 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 199 events. 124/199 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 578 event pairs. 0/199 useless extension candidates. Maximal degree in co-relation 391. Up to 60 conditions per place. [2020-02-10 23:00:06,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 48 transitions [2020-02-10 23:00:06,481 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 48 transitions [2020-02-10 23:00:06,482 INFO L479 AbstractCegarLoop]: Abstraction has has 40 places, 48 transitions [2020-02-10 23:00:06,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:06,505 INFO L129 PetriNetUnfolder]: 124/198 cut-off events. [2020-02-10 23:00:06,505 INFO L130 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2020-02-10 23:00:06,506 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:06,506 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:06,506 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:06,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:06,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1482893416, now seen corresponding path program 1 times [2020-02-10 23:00:06,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:06,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085699761] [2020-02-10 23:00:06,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:06,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:06,540 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085699761] [2020-02-10 23:00:06,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:06,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:06,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112934332] [2020-02-10 23:00:06,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:06,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:06,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:06,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:06,544 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 69 [2020-02-10 23:00:06,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 48 transitions. Second operand 3 states. [2020-02-10 23:00:06,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:06,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 69 [2020-02-10 23:00:06,545 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:06,584 INFO L129 PetriNetUnfolder]: 50/99 cut-off events. [2020-02-10 23:00:06,584 INFO L130 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2020-02-10 23:00:06,586 INFO L76 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 99 events. 50/99 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 292 event pairs. 25/124 useless extension candidates. Maximal degree in co-relation 198. Up to 30 conditions per place. [2020-02-10 23:00:06,589 INFO L145 encePairwiseOnDemand]: 64/69 looper letters, 2 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2020-02-10 23:00:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2020-02-10 23:00:06,593 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9323671497584541 [2020-02-10 23:00:06,593 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2020-02-10 23:00:06,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2020-02-10 23:00:06,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:06,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2020-02-10 23:00:06,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:06,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:06,597 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:06,597 INFO L178 Difference]: Start difference. First operand has 40 places, 48 transitions. Second operand 3 states and 193 transitions. [2020-02-10 23:00:06,598 INFO L206 Difference]: Finished difference. Result has 42 places, 44 transitions [2020-02-10 23:00:06,599 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2020-02-10 23:00:06,600 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 42 places, 44 transitions [2020-02-10 23:00:06,614 INFO L129 PetriNetUnfolder]: 50/99 cut-off events. [2020-02-10 23:00:06,614 INFO L130 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2020-02-10 23:00:06,615 INFO L76 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 99 events. 50/99 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 249 event pairs. 0/99 useless extension candidates. Maximal degree in co-relation 192. Up to 30 conditions per place. [2020-02-10 23:00:06,616 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 44 transitions [2020-02-10 23:00:06,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 44 transitions [2020-02-10 23:00:06,619 INFO L479 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions [2020-02-10 23:00:06,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:06,634 INFO L129 PetriNetUnfolder]: 50/98 cut-off events. [2020-02-10 23:00:06,634 INFO L130 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2020-02-10 23:00:06,634 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:06,634 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:06,635 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:06,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:06,635 INFO L82 PathProgramCache]: Analyzing trace with hash -651423530, now seen corresponding path program 1 times [2020-02-10 23:00:06,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:06,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399424197] [2020-02-10 23:00:06,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:06,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399424197] [2020-02-10 23:00:06,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:06,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:06,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878264956] [2020-02-10 23:00:06,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:06,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:06,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:06,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:06,694 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 69 [2020-02-10 23:00:06,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions. Second operand 3 states. [2020-02-10 23:00:06,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:06,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 69 [2020-02-10 23:00:06,707 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:06,740 INFO L129 PetriNetUnfolder]: 35/79 cut-off events. [2020-02-10 23:00:06,740 INFO L130 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2020-02-10 23:00:06,741 INFO L76 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 79 events. 35/79 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 209 event pairs. 4/83 useless extension candidates. Maximal degree in co-relation 165. Up to 20 conditions per place. [2020-02-10 23:00:06,743 INFO L145 encePairwiseOnDemand]: 66/69 looper letters, 4 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2020-02-10 23:00:06,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:06,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:06,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2020-02-10 23:00:06,748 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9323671497584541 [2020-02-10 23:00:06,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2020-02-10 23:00:06,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2020-02-10 23:00:06,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:06,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2020-02-10 23:00:06,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:06,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:06,753 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:06,754 INFO L178 Difference]: Start difference. First operand has 42 places, 44 transitions. Second operand 3 states and 193 transitions. [2020-02-10 23:00:06,755 INFO L206 Difference]: Finished difference. Result has 44 places, 42 transitions [2020-02-10 23:00:06,755 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2020-02-10 23:00:06,756 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions [2020-02-10 23:00:06,766 INFO L129 PetriNetUnfolder]: 35/79 cut-off events. [2020-02-10 23:00:06,767 INFO L130 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2020-02-10 23:00:06,767 INFO L76 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 79 events. 35/79 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 188 event pairs. 0/79 useless extension candidates. Maximal degree in co-relation 153. Up to 20 conditions per place. [2020-02-10 23:00:06,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 42 transitions [2020-02-10 23:00:06,769 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 42 transitions [2020-02-10 23:00:06,769 INFO L479 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions [2020-02-10 23:00:06,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:06,781 INFO L129 PetriNetUnfolder]: 35/78 cut-off events. [2020-02-10 23:00:06,782 INFO L130 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2020-02-10 23:00:06,783 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:06,783 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:06,784 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:06,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:06,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1855751296, now seen corresponding path program 1 times [2020-02-10 23:00:06,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:06,785 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035269243] [2020-02-10 23:00:06,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:06,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035269243] [2020-02-10 23:00:06,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:06,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:06,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395982117] [2020-02-10 23:00:06,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:06,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:06,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:06,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:06,853 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 69 [2020-02-10 23:00:06,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions. Second operand 3 states. [2020-02-10 23:00:06,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:06,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 69 [2020-02-10 23:00:06,854 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:06,873 INFO L129 PetriNetUnfolder]: 6/31 cut-off events. [2020-02-10 23:00:06,873 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2020-02-10 23:00:06,874 INFO L76 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 31 events. 6/31 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs. 11/42 useless extension candidates. Maximal degree in co-relation 59. Up to 6 conditions per place. [2020-02-10 23:00:06,875 INFO L145 encePairwiseOnDemand]: 63/69 looper letters, 1 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2020-02-10 23:00:06,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:06,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2020-02-10 23:00:06,879 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9323671497584541 [2020-02-10 23:00:06,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2020-02-10 23:00:06,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2020-02-10 23:00:06,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:06,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2020-02-10 23:00:06,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:06,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:06,884 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:06,884 INFO L178 Difference]: Start difference. First operand has 44 places, 42 transitions. Second operand 3 states and 193 transitions. [2020-02-10 23:00:06,885 INFO L206 Difference]: Finished difference. Result has 46 places, 28 transitions [2020-02-10 23:00:06,886 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=46, PETRI_TRANSITIONS=28} [2020-02-10 23:00:06,886 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 46 places, 28 transitions [2020-02-10 23:00:06,892 INFO L129 PetriNetUnfolder]: 6/31 cut-off events. [2020-02-10 23:00:06,892 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-02-10 23:00:06,894 INFO L76 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 31 events. 6/31 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs. 0/31 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2020-02-10 23:00:06,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 28 transitions [2020-02-10 23:00:06,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 28 transitions [2020-02-10 23:00:06,896 INFO L479 AbstractCegarLoop]: Abstraction has has 46 places, 28 transitions [2020-02-10 23:00:06,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:06,902 INFO L129 PetriNetUnfolder]: 6/30 cut-off events. [2020-02-10 23:00:06,902 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-02-10 23:00:06,903 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:06,903 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:06,903 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:06,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:06,904 INFO L82 PathProgramCache]: Analyzing trace with hash 2129609428, now seen corresponding path program 1 times [2020-02-10 23:00:06,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:06,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845403384] [2020-02-10 23:00:06,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:06,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845403384] [2020-02-10 23:00:06,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:06,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:06,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465102175] [2020-02-10 23:00:06,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:06,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:06,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:06,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:06,954 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 69 [2020-02-10 23:00:06,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 28 transitions. Second operand 3 states. [2020-02-10 23:00:06,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:06,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 69 [2020-02-10 23:00:06,955 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:06,971 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2020-02-10 23:00:06,971 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-02-10 23:00:06,972 INFO L76 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 19 events. 0/19 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs. 3/22 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2020-02-10 23:00:06,974 INFO L145 encePairwiseOnDemand]: 65/69 looper letters, 1 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2020-02-10 23:00:06,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:06,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:06,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2020-02-10 23:00:06,977 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2020-02-10 23:00:06,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 191 transitions. [2020-02-10 23:00:06,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 191 transitions. [2020-02-10 23:00:06,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:06,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 191 transitions. [2020-02-10 23:00:06,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:06,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:06,979 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:06,979 INFO L178 Difference]: Start difference. First operand has 46 places, 28 transitions. Second operand 3 states and 191 transitions. [2020-02-10 23:00:06,980 INFO L206 Difference]: Finished difference. Result has 48 places, 19 transitions [2020-02-10 23:00:06,980 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=48, PETRI_TRANSITIONS=19} [2020-02-10 23:00:06,981 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 48 places, 19 transitions [2020-02-10 23:00:06,984 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2020-02-10 23:00:06,985 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-02-10 23:00:06,985 INFO L76 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 19 events. 0/19 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs. 0/19 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2020-02-10 23:00:06,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 19 transitions [2020-02-10 23:00:06,986 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 19 transitions [2020-02-10 23:00:06,986 INFO L479 AbstractCegarLoop]: Abstraction has has 48 places, 19 transitions [2020-02-10 23:00:06,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:06,989 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2020-02-10 23:00:06,990 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-02-10 23:00:06,990 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:06,990 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:06,991 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:06,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:06,991 INFO L82 PathProgramCache]: Analyzing trace with hash 455935654, now seen corresponding path program 1 times [2020-02-10 23:00:06,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:06,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216878317] [2020-02-10 23:00:06,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:07,326 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2020-02-10 23:00:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:07,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216878317] [2020-02-10 23:00:07,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:07,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:07,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741735453] [2020-02-10 23:00:07,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:07,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:07,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:07,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:07,596 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:07,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 19 transitions. Second operand 8 states. [2020-02-10 23:00:07,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:07,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:07,597 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:07,801 INFO L129 PetriNetUnfolder]: 147/326 cut-off events. [2020-02-10 23:00:07,801 INFO L130 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2020-02-10 23:00:07,804 INFO L76 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 326 events. 147/326 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1663 event pairs. 1/301 useless extension candidates. Maximal degree in co-relation 656. Up to 97 conditions per place. [2020-02-10 23:00:07,810 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 20 selfloop transitions, 5 changer transitions 1/38 dead transitions. [2020-02-10 23:00:07,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:07,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:07,813 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:07,813 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:07,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:07,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:07,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:07,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:07,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:07,818 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:07,818 INFO L178 Difference]: Start difference. First operand has 48 places, 19 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:07,818 INFO L206 Difference]: Finished difference. Result has 61 places, 23 transitions [2020-02-10 23:00:07,819 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=123, PETRI_PLACES=61, PETRI_TRANSITIONS=23} [2020-02-10 23:00:07,819 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 61 places, 23 transitions [2020-02-10 23:00:07,828 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2020-02-10 23:00:07,829 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2020-02-10 23:00:07,830 INFO L76 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 55 events. 0/55 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 193 event pairs. 0/48 useless extension candidates. Maximal degree in co-relation 122. Up to 7 conditions per place. [2020-02-10 23:00:07,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 23 transitions [2020-02-10 23:00:07,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 23 transitions [2020-02-10 23:00:07,832 INFO L479 AbstractCegarLoop]: Abstraction has has 60 places, 23 transitions [2020-02-10 23:00:07,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:07,841 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2020-02-10 23:00:07,842 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2020-02-10 23:00:07,842 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:07,842 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:07,842 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:07,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:07,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1734129776, now seen corresponding path program 2 times [2020-02-10 23:00:07,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:07,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676399209] [2020-02-10 23:00:07,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:08,254 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676399209] [2020-02-10 23:00:08,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:08,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:08,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723115004] [2020-02-10 23:00:08,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:08,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:08,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:08,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:08,258 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:08,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 23 transitions. Second operand 8 states. [2020-02-10 23:00:08,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:08,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:08,259 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:08,458 INFO L129 PetriNetUnfolder]: 167/474 cut-off events. [2020-02-10 23:00:08,458 INFO L130 PetriNetUnfolder]: For 560/574 co-relation queries the response was YES. [2020-02-10 23:00:08,461 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1356 conditions, 474 events. 167/474 cut-off events. For 560/574 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3172 event pairs. 1/448 useless extension candidates. Maximal degree in co-relation 1329. Up to 134 conditions per place. [2020-02-10 23:00:08,469 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 23 selfloop transitions, 8 changer transitions 1/44 dead transitions. [2020-02-10 23:00:08,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:08,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:08,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:08,473 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:08,474 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:08,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:08,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:08,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:08,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:08,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:08,479 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:08,481 INFO L178 Difference]: Start difference. First operand has 60 places, 23 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:08,484 INFO L206 Difference]: Finished difference. Result has 73 places, 29 transitions [2020-02-10 23:00:08,484 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=200, PETRI_PLACES=73, PETRI_TRANSITIONS=29} [2020-02-10 23:00:08,484 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 73 places, 29 transitions [2020-02-10 23:00:08,504 INFO L129 PetriNetUnfolder]: 0/134 cut-off events. [2020-02-10 23:00:08,504 INFO L130 PetriNetUnfolder]: For 200/204 co-relation queries the response was YES. [2020-02-10 23:00:08,505 INFO L76 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 134 events. 0/134 cut-off events. For 200/204 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 843 event pairs. 0/118 useless extension candidates. Maximal degree in co-relation 352. Up to 17 conditions per place. [2020-02-10 23:00:08,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 29 transitions [2020-02-10 23:00:08,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 29 transitions [2020-02-10 23:00:08,509 INFO L479 AbstractCegarLoop]: Abstraction has has 72 places, 29 transitions [2020-02-10 23:00:08,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:08,529 INFO L129 PetriNetUnfolder]: 0/120 cut-off events. [2020-02-10 23:00:08,529 INFO L130 PetriNetUnfolder]: For 200/204 co-relation queries the response was YES. [2020-02-10 23:00:08,529 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:08,530 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:08,530 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:08,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:08,530 INFO L82 PathProgramCache]: Analyzing trace with hash -2033581502, now seen corresponding path program 3 times [2020-02-10 23:00:08,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:08,532 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341915890] [2020-02-10 23:00:08,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:08,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341915890] [2020-02-10 23:00:08,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:08,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:08,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844831279] [2020-02-10 23:00:08,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:08,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:08,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:08,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:08,867 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:08,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 29 transitions. Second operand 8 states. [2020-02-10 23:00:08,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:08,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:08,868 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:09,213 INFO L129 PetriNetUnfolder]: 179/578 cut-off events. [2020-02-10 23:00:09,213 INFO L130 PetriNetUnfolder]: For 1806/1830 co-relation queries the response was YES. [2020-02-10 23:00:09,219 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2103 conditions, 578 events. 179/578 cut-off events. For 1806/1830 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4060 event pairs. 1/550 useless extension candidates. Maximal degree in co-relation 2069. Up to 180 conditions per place. [2020-02-10 23:00:09,236 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 45 selfloop transitions, 7 changer transitions 1/65 dead transitions. [2020-02-10 23:00:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:09,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:09,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:09,239 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:09,239 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:09,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:09,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:09,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:09,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:09,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:09,244 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:09,244 INFO L178 Difference]: Start difference. First operand has 72 places, 29 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:09,245 INFO L206 Difference]: Finished difference. Result has 85 places, 35 transitions [2020-02-10 23:00:09,245 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=289, PETRI_PLACES=85, PETRI_TRANSITIONS=35} [2020-02-10 23:00:09,246 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 85 places, 35 transitions [2020-02-10 23:00:09,297 INFO L129 PetriNetUnfolder]: 0/231 cut-off events. [2020-02-10 23:00:09,297 INFO L130 PetriNetUnfolder]: For 553/577 co-relation queries the response was YES. [2020-02-10 23:00:09,300 INFO L76 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 231 events. 0/231 cut-off events. For 553/577 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1859 event pairs. 0/206 useless extension candidates. Maximal degree in co-relation 678. Up to 29 conditions per place. [2020-02-10 23:00:09,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 35 transitions [2020-02-10 23:00:09,306 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 35 transitions [2020-02-10 23:00:09,306 INFO L479 AbstractCegarLoop]: Abstraction has has 84 places, 35 transitions [2020-02-10 23:00:09,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:09,363 INFO L129 PetriNetUnfolder]: 0/205 cut-off events. [2020-02-10 23:00:09,363 INFO L130 PetriNetUnfolder]: For 553/577 co-relation queries the response was YES. [2020-02-10 23:00:09,363 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:09,364 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:09,364 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:09,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:09,364 INFO L82 PathProgramCache]: Analyzing trace with hash 376307292, now seen corresponding path program 4 times [2020-02-10 23:00:09,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:09,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959444314] [2020-02-10 23:00:09,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:09,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959444314] [2020-02-10 23:00:09,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:09,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:09,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788869089] [2020-02-10 23:00:09,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:09,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:09,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:09,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:09,642 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:09,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 35 transitions. Second operand 8 states. [2020-02-10 23:00:09,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:09,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:09,643 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:09,979 INFO L129 PetriNetUnfolder]: 182/795 cut-off events. [2020-02-10 23:00:09,980 INFO L130 PetriNetUnfolder]: For 3659/3722 co-relation queries the response was YES. [2020-02-10 23:00:09,990 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 795 events. 182/795 cut-off events. For 3659/3722 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6962 event pairs. 1/768 useless extension candidates. Maximal degree in co-relation 3071. Up to 197 conditions per place. [2020-02-10 23:00:10,010 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 45 selfloop transitions, 13 changer transitions 1/71 dead transitions. [2020-02-10 23:00:10,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:10,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:10,013 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:10,013 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:10,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:10,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:10,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:10,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:10,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:10,017 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:10,018 INFO L178 Difference]: Start difference. First operand has 84 places, 35 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:10,019 INFO L206 Difference]: Finished difference. Result has 97 places, 41 transitions [2020-02-10 23:00:10,019 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=97, PETRI_TRANSITIONS=41} [2020-02-10 23:00:10,019 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 97 places, 41 transitions [2020-02-10 23:00:10,131 INFO L129 PetriNetUnfolder]: 0/422 cut-off events. [2020-02-10 23:00:10,132 INFO L130 PetriNetUnfolder]: For 1836/1946 co-relation queries the response was YES. [2020-02-10 23:00:10,136 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1479 conditions, 422 events. 0/422 cut-off events. For 1836/1946 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4182 event pairs. 5/385 useless extension candidates. Maximal degree in co-relation 1432. Up to 52 conditions per place. [2020-02-10 23:00:10,137 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 41 transitions [2020-02-10 23:00:10,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 41 transitions [2020-02-10 23:00:10,146 INFO L479 AbstractCegarLoop]: Abstraction has has 96 places, 41 transitions [2020-02-10 23:00:10,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:10,221 INFO L129 PetriNetUnfolder]: 0/373 cut-off events. [2020-02-10 23:00:10,221 INFO L130 PetriNetUnfolder]: For 1837/1947 co-relation queries the response was YES. [2020-02-10 23:00:10,221 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:10,221 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:10,221 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:10,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:10,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1813429344, now seen corresponding path program 5 times [2020-02-10 23:00:10,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:10,222 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631221260] [2020-02-10 23:00:10,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:10,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631221260] [2020-02-10 23:00:10,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:10,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:10,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497231306] [2020-02-10 23:00:10,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:10,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:10,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:10,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:10,512 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:10,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 41 transitions. Second operand 8 states. [2020-02-10 23:00:10,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:10,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:10,513 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:10,899 INFO L129 PetriNetUnfolder]: 179/809 cut-off events. [2020-02-10 23:00:10,899 INFO L130 PetriNetUnfolder]: For 5699/5749 co-relation queries the response was YES. [2020-02-10 23:00:10,908 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3606 conditions, 809 events. 179/809 cut-off events. For 5699/5749 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7167 event pairs. 1/782 useless extension candidates. Maximal degree in co-relation 3558. Up to 197 conditions per place. [2020-02-10 23:00:10,928 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 45 selfloop transitions, 13 changer transitions 1/71 dead transitions. [2020-02-10 23:00:10,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:10,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:10,931 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:10,931 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:10,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:10,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:10,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:10,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:10,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:10,935 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:10,936 INFO L178 Difference]: Start difference. First operand has 96 places, 41 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:10,936 INFO L206 Difference]: Finished difference. Result has 106 places, 42 transitions [2020-02-10 23:00:10,937 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=452, PETRI_PLACES=106, PETRI_TRANSITIONS=42} [2020-02-10 23:00:10,937 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 106 places, 42 transitions [2020-02-10 23:00:11,031 INFO L129 PetriNetUnfolder]: 0/443 cut-off events. [2020-02-10 23:00:11,031 INFO L130 PetriNetUnfolder]: For 2382/2507 co-relation queries the response was YES. [2020-02-10 23:00:11,036 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 443 events. 0/443 cut-off events. For 2382/2507 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4461 event pairs. 5/407 useless extension candidates. Maximal degree in co-relation 1610. Up to 54 conditions per place. [2020-02-10 23:00:11,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 42 transitions [2020-02-10 23:00:11,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 42 transitions [2020-02-10 23:00:11,046 INFO L479 AbstractCegarLoop]: Abstraction has has 105 places, 42 transitions [2020-02-10 23:00:11,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:11,118 INFO L129 PetriNetUnfolder]: 0/392 cut-off events. [2020-02-10 23:00:11,119 INFO L130 PetriNetUnfolder]: For 2382/2507 co-relation queries the response was YES. [2020-02-10 23:00:11,119 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:11,119 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:11,119 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:11,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:11,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1449392672, now seen corresponding path program 6 times [2020-02-10 23:00:11,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:11,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099683383] [2020-02-10 23:00:11,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:11,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:11,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099683383] [2020-02-10 23:00:11,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:11,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:11,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090906219] [2020-02-10 23:00:11,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:11,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:11,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:11,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:11,407 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:11,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 42 transitions. Second operand 8 states. [2020-02-10 23:00:11,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:11,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:11,408 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:11,814 INFO L129 PetriNetUnfolder]: 179/799 cut-off events. [2020-02-10 23:00:11,814 INFO L130 PetriNetUnfolder]: For 6606/6656 co-relation queries the response was YES. [2020-02-10 23:00:11,825 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3839 conditions, 799 events. 179/799 cut-off events. For 6606/6656 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7159 event pairs. 1/768 useless extension candidates. Maximal degree in co-relation 3787. Up to 197 conditions per place. [2020-02-10 23:00:11,846 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 46 selfloop transitions, 15 changer transitions 1/74 dead transitions. [2020-02-10 23:00:11,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:11,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:11,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:11,848 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:11,848 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:11,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:11,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:11,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:11,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:11,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:11,852 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:11,852 INFO L178 Difference]: Start difference. First operand has 105 places, 42 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:11,852 INFO L206 Difference]: Finished difference. Result has 115 places, 45 transitions [2020-02-10 23:00:11,853 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=534, PETRI_PLACES=115, PETRI_TRANSITIONS=45} [2020-02-10 23:00:11,853 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 115 places, 45 transitions [2020-02-10 23:00:11,945 INFO L129 PetriNetUnfolder]: 0/435 cut-off events. [2020-02-10 23:00:11,945 INFO L130 PetriNetUnfolder]: For 2981/3114 co-relation queries the response was YES. [2020-02-10 23:00:11,951 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1768 conditions, 435 events. 0/435 cut-off events. For 2981/3114 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4375 event pairs. 5/399 useless extension candidates. Maximal degree in co-relation 1713. Up to 53 conditions per place. [2020-02-10 23:00:11,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 45 transitions [2020-02-10 23:00:11,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 45 transitions [2020-02-10 23:00:11,963 INFO L479 AbstractCegarLoop]: Abstraction has has 114 places, 45 transitions [2020-02-10 23:00:11,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:12,087 INFO L129 PetriNetUnfolder]: 0/385 cut-off events. [2020-02-10 23:00:12,088 INFO L130 PetriNetUnfolder]: For 2981/3114 co-relation queries the response was YES. [2020-02-10 23:00:12,088 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:12,088 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:12,088 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:12,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:12,089 INFO L82 PathProgramCache]: Analyzing trace with hash 869847050, now seen corresponding path program 7 times [2020-02-10 23:00:12,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:12,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658098885] [2020-02-10 23:00:12,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:12,350 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658098885] [2020-02-10 23:00:12,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:12,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:12,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828472108] [2020-02-10 23:00:12,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:12,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:12,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:12,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:12,352 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:12,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 45 transitions. Second operand 8 states. [2020-02-10 23:00:12,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:12,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:12,353 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:12,784 INFO L129 PetriNetUnfolder]: 178/799 cut-off events. [2020-02-10 23:00:12,784 INFO L130 PetriNetUnfolder]: For 7855/7905 co-relation queries the response was YES. [2020-02-10 23:00:12,796 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4077 conditions, 799 events. 178/799 cut-off events. For 7855/7905 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7163 event pairs. 1/768 useless extension candidates. Maximal degree in co-relation 4021. Up to 197 conditions per place. [2020-02-10 23:00:12,864 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 44 selfloop transitions, 16 changer transitions 2/74 dead transitions. [2020-02-10 23:00:12,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:12,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:12,866 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:12,866 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:12,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:12,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:12,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:12,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:12,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:12,870 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:12,870 INFO L178 Difference]: Start difference. First operand has 114 places, 45 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:12,871 INFO L206 Difference]: Finished difference. Result has 124 places, 47 transitions [2020-02-10 23:00:12,871 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=604, PETRI_PLACES=124, PETRI_TRANSITIONS=47} [2020-02-10 23:00:12,871 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 124 places, 47 transitions [2020-02-10 23:00:12,965 INFO L129 PetriNetUnfolder]: 0/436 cut-off events. [2020-02-10 23:00:12,965 INFO L130 PetriNetUnfolder]: For 3711/3874 co-relation queries the response was YES. [2020-02-10 23:00:12,969 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1906 conditions, 436 events. 0/436 cut-off events. For 3711/3874 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4364 event pairs. 5/400 useless extension candidates. Maximal degree in co-relation 1847. Up to 53 conditions per place. [2020-02-10 23:00:12,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 47 transitions [2020-02-10 23:00:12,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 47 transitions [2020-02-10 23:00:12,979 INFO L479 AbstractCegarLoop]: Abstraction has has 123 places, 47 transitions [2020-02-10 23:00:12,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:13,056 INFO L129 PetriNetUnfolder]: 0/386 cut-off events. [2020-02-10 23:00:13,057 INFO L130 PetriNetUnfolder]: For 3711/3874 co-relation queries the response was YES. [2020-02-10 23:00:13,057 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:13,057 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:13,057 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:13,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:13,057 INFO L82 PathProgramCache]: Analyzing trace with hash 78094052, now seen corresponding path program 8 times [2020-02-10 23:00:13,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:13,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226075744] [2020-02-10 23:00:13,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:13,284 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226075744] [2020-02-10 23:00:13,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:13,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:13,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519239931] [2020-02-10 23:00:13,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:13,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:13,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:13,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:13,286 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:13,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 47 transitions. Second operand 8 states. [2020-02-10 23:00:13,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:13,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:13,287 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:13,685 INFO L129 PetriNetUnfolder]: 170/859 cut-off events. [2020-02-10 23:00:13,686 INFO L130 PetriNetUnfolder]: For 9798/9877 co-relation queries the response was YES. [2020-02-10 23:00:13,692 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4588 conditions, 859 events. 170/859 cut-off events. For 9798/9877 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8055 event pairs. 4/832 useless extension candidates. Maximal degree in co-relation 4528. Up to 197 conditions per place. [2020-02-10 23:00:13,712 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 46 selfloop transitions, 20 changer transitions 0/78 dead transitions. [2020-02-10 23:00:13,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:13,714 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:13,714 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:13,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:13,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:13,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:13,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:13,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:13,717 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:13,717 INFO L178 Difference]: Start difference. First operand has 123 places, 47 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:13,718 INFO L206 Difference]: Finished difference. Result has 134 places, 54 transitions [2020-02-10 23:00:13,719 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=790, PETRI_PLACES=134, PETRI_TRANSITIONS=54} [2020-02-10 23:00:13,719 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 134 places, 54 transitions [2020-02-10 23:00:13,863 INFO L129 PetriNetUnfolder]: 0/520 cut-off events. [2020-02-10 23:00:13,863 INFO L130 PetriNetUnfolder]: For 5684/5861 co-relation queries the response was YES. [2020-02-10 23:00:13,869 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 520 events. 0/520 cut-off events. For 5684/5861 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5494 event pairs. 5/484 useless extension candidates. Maximal degree in co-relation 2367. Up to 62 conditions per place. [2020-02-10 23:00:13,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 54 transitions [2020-02-10 23:00:13,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 54 transitions [2020-02-10 23:00:13,881 INFO L479 AbstractCegarLoop]: Abstraction has has 134 places, 54 transitions [2020-02-10 23:00:13,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:13,957 INFO L129 PetriNetUnfolder]: 0/462 cut-off events. [2020-02-10 23:00:13,957 INFO L130 PetriNetUnfolder]: For 5648/5797 co-relation queries the response was YES. [2020-02-10 23:00:13,958 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:13,958 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:13,958 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:13,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:13,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1641751494, now seen corresponding path program 9 times [2020-02-10 23:00:13,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:13,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29328520] [2020-02-10 23:00:13,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:14,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29328520] [2020-02-10 23:00:14,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:14,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:14,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303025925] [2020-02-10 23:00:14,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:14,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:14,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:14,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:14,229 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:14,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 54 transitions. Second operand 8 states. [2020-02-10 23:00:14,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:14,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:14,230 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:14,760 INFO L129 PetriNetUnfolder]: 184/1033 cut-off events. [2020-02-10 23:00:14,760 INFO L130 PetriNetUnfolder]: For 14999/15061 co-relation queries the response was YES. [2020-02-10 23:00:14,769 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5917 conditions, 1033 events. 184/1033 cut-off events. For 14999/15061 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10191 event pairs. 1/999 useless extension candidates. Maximal degree in co-relation 5852. Up to 299 conditions per place. [2020-02-10 23:00:14,798 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 61 selfloop transitions, 16 changer transitions 1/90 dead transitions. [2020-02-10 23:00:14,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:14,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:14,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:14,801 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:14,801 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:14,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:14,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:14,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:14,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:14,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:14,805 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:14,805 INFO L178 Difference]: Start difference. First operand has 134 places, 54 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:14,806 INFO L206 Difference]: Finished difference. Result has 147 places, 61 transitions [2020-02-10 23:00:14,807 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=994, PETRI_PLACES=147, PETRI_TRANSITIONS=61} [2020-02-10 23:00:14,807 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 147 places, 61 transitions [2020-02-10 23:00:15,021 INFO L129 PetriNetUnfolder]: 0/655 cut-off events. [2020-02-10 23:00:15,021 INFO L130 PetriNetUnfolder]: For 8742/8884 co-relation queries the response was YES. [2020-02-10 23:00:15,026 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3254 conditions, 655 events. 0/655 cut-off events. For 8742/8884 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7337 event pairs. 9/598 useless extension candidates. Maximal degree in co-relation 3183. Up to 78 conditions per place. [2020-02-10 23:00:15,027 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 61 transitions [2020-02-10 23:00:15,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 61 transitions [2020-02-10 23:00:15,041 INFO L479 AbstractCegarLoop]: Abstraction has has 146 places, 61 transitions [2020-02-10 23:00:15,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:15,200 INFO L129 PetriNetUnfolder]: 0/581 cut-off events. [2020-02-10 23:00:15,200 INFO L130 PetriNetUnfolder]: For 8658/8766 co-relation queries the response was YES. [2020-02-10 23:00:15,200 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:15,200 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:15,200 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:15,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:15,201 INFO L82 PathProgramCache]: Analyzing trace with hash -113713534, now seen corresponding path program 10 times [2020-02-10 23:00:15,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:15,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377282237] [2020-02-10 23:00:15,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:15,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377282237] [2020-02-10 23:00:15,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:15,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:15,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423035828] [2020-02-10 23:00:15,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:15,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:15,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:15,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:15,462 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:15,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 61 transitions. Second operand 8 states. [2020-02-10 23:00:15,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:15,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:15,462 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:16,048 INFO L129 PetriNetUnfolder]: 180/1082 cut-off events. [2020-02-10 23:00:16,048 INFO L130 PetriNetUnfolder]: For 18906/18968 co-relation queries the response was YES. [2020-02-10 23:00:16,057 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6482 conditions, 1082 events. 180/1082 cut-off events. For 18906/18968 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 10956 event pairs. 1/1051 useless extension candidates. Maximal degree in co-relation 6410. Up to 248 conditions per place. [2020-02-10 23:00:16,073 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 57 selfloop transitions, 23 changer transitions 2/94 dead transitions. [2020-02-10 23:00:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:16,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:16,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:16,075 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:16,075 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:16,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:16,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:16,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:16,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:16,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:16,078 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:16,078 INFO L178 Difference]: Start difference. First operand has 146 places, 61 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:16,079 INFO L206 Difference]: Finished difference. Result has 158 places, 67 transitions [2020-02-10 23:00:16,080 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1196, PETRI_PLACES=158, PETRI_TRANSITIONS=67} [2020-02-10 23:00:16,080 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 158 places, 67 transitions [2020-02-10 23:00:16,249 INFO L129 PetriNetUnfolder]: 0/693 cut-off events. [2020-02-10 23:00:16,249 INFO L130 PetriNetUnfolder]: For 11048/11157 co-relation queries the response was YES. [2020-02-10 23:00:16,256 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3662 conditions, 693 events. 0/693 cut-off events. For 11048/11157 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7867 event pairs. 12/641 useless extension candidates. Maximal degree in co-relation 3585. Up to 82 conditions per place. [2020-02-10 23:00:16,256 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 67 transitions [2020-02-10 23:00:16,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 67 transitions [2020-02-10 23:00:16,267 INFO L479 AbstractCegarLoop]: Abstraction has has 157 places, 67 transitions [2020-02-10 23:00:16,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:16,375 INFO L129 PetriNetUnfolder]: 0/615 cut-off events. [2020-02-10 23:00:16,376 INFO L130 PetriNetUnfolder]: For 11132/11275 co-relation queries the response was YES. [2020-02-10 23:00:16,376 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:16,376 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:16,376 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:16,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:16,376 INFO L82 PathProgramCache]: Analyzing trace with hash -426016186, now seen corresponding path program 11 times [2020-02-10 23:00:16,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:16,377 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081458277] [2020-02-10 23:00:16,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:16,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081458277] [2020-02-10 23:00:16,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:16,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:16,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660829909] [2020-02-10 23:00:16,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:16,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:16,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:16,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:16,637 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:16,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 67 transitions. Second operand 8 states. [2020-02-10 23:00:16,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:16,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:16,638 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:17,516 INFO L129 PetriNetUnfolder]: 192/1295 cut-off events. [2020-02-10 23:00:17,517 INFO L130 PetriNetUnfolder]: For 25518/25597 co-relation queries the response was YES. [2020-02-10 23:00:17,530 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8204 conditions, 1295 events. 192/1295 cut-off events. For 25518/25597 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14015 event pairs. 1/1259 useless extension candidates. Maximal degree in co-relation 8126. Up to 376 conditions per place. [2020-02-10 23:00:17,552 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 78 selfloop transitions, 14 changer transitions 1/105 dead transitions. [2020-02-10 23:00:17,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:17,554 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:17,554 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:17,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:17,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:17,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:17,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:17,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:17,558 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:17,558 INFO L178 Difference]: Start difference. First operand has 157 places, 67 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:17,559 INFO L206 Difference]: Finished difference. Result has 170 places, 74 transitions [2020-02-10 23:00:17,560 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1404, PETRI_PLACES=170, PETRI_TRANSITIONS=74} [2020-02-10 23:00:17,560 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 170 places, 74 transitions [2020-02-10 23:00:17,873 INFO L129 PetriNetUnfolder]: 0/904 cut-off events. [2020-02-10 23:00:17,873 INFO L130 PetriNetUnfolder]: For 17101/17173 co-relation queries the response was YES. [2020-02-10 23:00:17,882 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5063 conditions, 904 events. 0/904 cut-off events. For 17101/17173 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10961 event pairs. 5/825 useless extension candidates. Maximal degree in co-relation 4979. Up to 106 conditions per place. [2020-02-10 23:00:17,882 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 74 transitions [2020-02-10 23:00:17,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 74 transitions [2020-02-10 23:00:17,897 INFO L479 AbstractCegarLoop]: Abstraction has has 169 places, 74 transitions [2020-02-10 23:00:17,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:18,062 INFO L129 PetriNetUnfolder]: 0/802 cut-off events. [2020-02-10 23:00:18,062 INFO L130 PetriNetUnfolder]: For 17149/17217 co-relation queries the response was YES. [2020-02-10 23:00:18,062 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:18,062 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:18,062 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:18,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:18,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1926057022, now seen corresponding path program 12 times [2020-02-10 23:00:18,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:18,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538292277] [2020-02-10 23:00:18,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:18,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538292277] [2020-02-10 23:00:18,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:18,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:18,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256156283] [2020-02-10 23:00:18,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:18,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:18,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:18,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:18,320 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:18,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 74 transitions. Second operand 8 states. [2020-02-10 23:00:18,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:18,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:18,321 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:19,261 INFO L129 PetriNetUnfolder]: 176/1483 cut-off events. [2020-02-10 23:00:19,261 INFO L130 PetriNetUnfolder]: For 34098/34216 co-relation queries the response was YES. [2020-02-10 23:00:19,277 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9645 conditions, 1483 events. 176/1483 cut-off events. For 34098/34216 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 17174 event pairs. 1/1446 useless extension candidates. Maximal degree in co-relation 9560. Up to 299 conditions per place. [2020-02-10 23:00:19,303 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 73 selfloop transitions, 34 changer transitions 1/120 dead transitions. [2020-02-10 23:00:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:19,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:19,305 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:19,305 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:19,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:19,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:19,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:19,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:19,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:19,308 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:19,308 INFO L178 Difference]: Start difference. First operand has 169 places, 74 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:19,309 INFO L206 Difference]: Finished difference. Result has 181 places, 83 transitions [2020-02-10 23:00:19,310 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1724, PETRI_PLACES=181, PETRI_TRANSITIONS=83} [2020-02-10 23:00:19,310 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 181 places, 83 transitions [2020-02-10 23:00:19,832 INFO L129 PetriNetUnfolder]: 0/1123 cut-off events. [2020-02-10 23:00:19,832 INFO L130 PetriNetUnfolder]: For 25295/25372 co-relation queries the response was YES. [2020-02-10 23:00:19,843 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6651 conditions, 1123 events. 0/1123 cut-off events. For 25295/25372 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14299 event pairs. 12/1048 useless extension candidates. Maximal degree in co-relation 6561. Up to 130 conditions per place. [2020-02-10 23:00:19,844 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 83 transitions [2020-02-10 23:00:19,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 83 transitions [2020-02-10 23:00:19,862 INFO L479 AbstractCegarLoop]: Abstraction has has 180 places, 83 transitions [2020-02-10 23:00:19,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:20,102 INFO L129 PetriNetUnfolder]: 0/997 cut-off events. [2020-02-10 23:00:20,102 INFO L130 PetriNetUnfolder]: For 25295/25372 co-relation queries the response was YES. [2020-02-10 23:00:20,102 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:20,103 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:20,103 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:20,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:20,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1832232914, now seen corresponding path program 13 times [2020-02-10 23:00:20,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:20,103 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430871037] [2020-02-10 23:00:20,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:20,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:20,400 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430871037] [2020-02-10 23:00:20,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:20,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:20,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778651174] [2020-02-10 23:00:20,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:20,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:20,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:20,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:20,405 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:20,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 83 transitions. Second operand 8 states. [2020-02-10 23:00:20,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:20,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:20,405 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:21,806 INFO L129 PetriNetUnfolder]: 156/1707 cut-off events. [2020-02-10 23:00:21,806 INFO L130 PetriNetUnfolder]: For 44516/44621 co-relation queries the response was YES. [2020-02-10 23:00:21,827 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11399 conditions, 1707 events. 156/1707 cut-off events. For 44516/44621 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 21166 event pairs. 1/1667 useless extension candidates. Maximal degree in co-relation 11308. Up to 319 conditions per place. [2020-02-10 23:00:21,860 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 69 selfloop transitions, 39 changer transitions 0/120 dead transitions. [2020-02-10 23:00:21,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:21,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:21,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:21,862 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:21,862 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:21,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:21,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:21,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:21,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:21,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:21,865 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:21,865 INFO L178 Difference]: Start difference. First operand has 180 places, 83 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:21,866 INFO L206 Difference]: Finished difference. Result has 192 places, 96 transitions [2020-02-10 23:00:21,866 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2197, PETRI_PLACES=192, PETRI_TRANSITIONS=96} [2020-02-10 23:00:21,866 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 192 places, 96 transitions [2020-02-10 23:00:22,581 INFO L129 PetriNetUnfolder]: 0/1404 cut-off events. [2020-02-10 23:00:22,582 INFO L130 PetriNetUnfolder]: For 37275/37320 co-relation queries the response was YES. [2020-02-10 23:00:22,596 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8796 conditions, 1404 events. 0/1404 cut-off events. For 37275/37320 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 18879 event pairs. 0/1308 useless extension candidates. Maximal degree in co-relation 8700. Up to 160 conditions per place. [2020-02-10 23:00:22,596 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 96 transitions [2020-02-10 23:00:22,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 96 transitions [2020-02-10 23:00:22,623 INFO L479 AbstractCegarLoop]: Abstraction has has 192 places, 96 transitions [2020-02-10 23:00:22,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:22,962 INFO L129 PetriNetUnfolder]: 0/1249 cut-off events. [2020-02-10 23:00:22,963 INFO L130 PetriNetUnfolder]: For 37348/37396 co-relation queries the response was YES. [2020-02-10 23:00:22,963 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:22,963 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:22,963 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:22,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:22,963 INFO L82 PathProgramCache]: Analyzing trace with hash 2051063500, now seen corresponding path program 14 times [2020-02-10 23:00:22,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:22,964 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907742895] [2020-02-10 23:00:22,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:23,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907742895] [2020-02-10 23:00:23,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:23,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:23,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713230942] [2020-02-10 23:00:23,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:23,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:23,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:23,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:23,218 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:23,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 96 transitions. Second operand 8 states. [2020-02-10 23:00:23,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:23,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:23,219 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:24,942 INFO L129 PetriNetUnfolder]: 156/1706 cut-off events. [2020-02-10 23:00:24,943 INFO L130 PetriNetUnfolder]: For 50150/50236 co-relation queries the response was YES. [2020-02-10 23:00:24,964 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11902 conditions, 1706 events. 156/1706 cut-off events. For 50150/50236 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 21158 event pairs. 1/1666 useless extension candidates. Maximal degree in co-relation 11805. Up to 459 conditions per place. [2020-02-10 23:00:24,998 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 81 selfloop transitions, 33 changer transitions 0/126 dead transitions. [2020-02-10 23:00:24,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:24,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:25,000 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:25,000 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:25,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:25,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:25,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:25,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:25,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:25,002 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:25,002 INFO L178 Difference]: Start difference. First operand has 192 places, 96 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:25,004 INFO L206 Difference]: Finished difference. Result has 203 places, 102 transitions [2020-02-10 23:00:25,004 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2449, PETRI_PLACES=203, PETRI_TRANSITIONS=102} [2020-02-10 23:00:25,004 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 203 places, 102 transitions [2020-02-10 23:00:25,856 INFO L129 PetriNetUnfolder]: 0/1403 cut-off events. [2020-02-10 23:00:25,857 INFO L130 PetriNetUnfolder]: For 42069/42121 co-relation queries the response was YES. [2020-02-10 23:00:25,871 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9185 conditions, 1403 events. 0/1403 cut-off events. For 42069/42121 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 18810 event pairs. 1/1310 useless extension candidates. Maximal degree in co-relation 9084. Up to 160 conditions per place. [2020-02-10 23:00:25,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 102 transitions [2020-02-10 23:00:25,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 102 transitions [2020-02-10 23:00:25,896 INFO L479 AbstractCegarLoop]: Abstraction has has 203 places, 102 transitions [2020-02-10 23:00:25,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:26,256 INFO L129 PetriNetUnfolder]: 0/1249 cut-off events. [2020-02-10 23:00:26,256 INFO L130 PetriNetUnfolder]: For 41760/41808 co-relation queries the response was YES. [2020-02-10 23:00:26,256 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:26,257 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:26,257 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:26,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:26,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1733719474, now seen corresponding path program 15 times [2020-02-10 23:00:26,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:26,257 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772477383] [2020-02-10 23:00:26,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:26,527 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772477383] [2020-02-10 23:00:26,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:26,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:26,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525752336] [2020-02-10 23:00:26,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:26,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:26,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:26,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:26,530 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:26,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 102 transitions. Second operand 8 states. [2020-02-10 23:00:26,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:26,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:26,530 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:27,992 INFO L129 PetriNetUnfolder]: 156/1704 cut-off events. [2020-02-10 23:00:27,992 INFO L130 PetriNetUnfolder]: For 56217/56303 co-relation queries the response was YES. [2020-02-10 23:00:28,012 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12356 conditions, 1704 events. 156/1704 cut-off events. For 56217/56303 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 21089 event pairs. 1/1665 useless extension candidates. Maximal degree in co-relation 12254. Up to 319 conditions per place. [2020-02-10 23:00:28,044 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 86 selfloop transitions, 33 changer transitions 1/132 dead transitions. [2020-02-10 23:00:28,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:28,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:28,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:28,045 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:28,045 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:28,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:28,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:28,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:28,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:28,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:28,048 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:28,048 INFO L178 Difference]: Start difference. First operand has 203 places, 102 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:28,050 INFO L206 Difference]: Finished difference. Result has 214 places, 106 transitions [2020-02-10 23:00:28,050 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2653, PETRI_PLACES=214, PETRI_TRANSITIONS=106} [2020-02-10 23:00:28,050 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 214 places, 106 transitions [2020-02-10 23:00:28,851 INFO L129 PetriNetUnfolder]: 0/1397 cut-off events. [2020-02-10 23:00:28,851 INFO L130 PetriNetUnfolder]: For 46151/46199 co-relation queries the response was YES. [2020-02-10 23:00:28,869 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9484 conditions, 1397 events. 0/1397 cut-off events. For 46151/46199 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 18768 event pairs. 0/1296 useless extension candidates. Maximal degree in co-relation 9378. Up to 159 conditions per place. [2020-02-10 23:00:28,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 106 transitions [2020-02-10 23:00:28,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 106 transitions [2020-02-10 23:00:28,898 INFO L479 AbstractCegarLoop]: Abstraction has has 213 places, 106 transitions [2020-02-10 23:00:28,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:29,270 INFO L129 PetriNetUnfolder]: 0/1244 cut-off events. [2020-02-10 23:00:29,271 INFO L130 PetriNetUnfolder]: For 46342/46401 co-relation queries the response was YES. [2020-02-10 23:00:29,271 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:29,271 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:29,271 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:29,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:29,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1937284794, now seen corresponding path program 16 times [2020-02-10 23:00:29,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:29,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538326594] [2020-02-10 23:00:29,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:29,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538326594] [2020-02-10 23:00:29,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:29,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:29,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734812929] [2020-02-10 23:00:29,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:29,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:29,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:29,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:29,550 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:29,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 106 transitions. Second operand 8 states. [2020-02-10 23:00:29,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:29,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:29,551 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:31,389 INFO L129 PetriNetUnfolder]: 153/1730 cut-off events. [2020-02-10 23:00:31,390 INFO L130 PetriNetUnfolder]: For 62335/62421 co-relation queries the response was YES. [2020-02-10 23:00:31,414 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12893 conditions, 1730 events. 153/1730 cut-off events. For 62335/62421 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 21596 event pairs. 1/1690 useless extension candidates. Maximal degree in co-relation 12786. Up to 452 conditions per place. [2020-02-10 23:00:31,453 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 112 selfloop transitions, 21 changer transitions 1/146 dead transitions. [2020-02-10 23:00:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:31,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:31,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:31,455 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:31,455 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:31,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:31,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:31,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:31,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:31,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:31,456 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:31,457 INFO L178 Difference]: Start difference. First operand has 213 places, 106 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:31,458 INFO L206 Difference]: Finished difference. Result has 224 places, 108 transitions [2020-02-10 23:00:31,458 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=2653, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2766, PETRI_PLACES=224, PETRI_TRANSITIONS=108} [2020-02-10 23:00:31,458 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 224 places, 108 transitions [2020-02-10 23:00:32,217 INFO L129 PetriNetUnfolder]: 0/1421 cut-off events. [2020-02-10 23:00:32,218 INFO L130 PetriNetUnfolder]: For 51652/51700 co-relation queries the response was YES. [2020-02-10 23:00:32,236 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9985 conditions, 1421 events. 0/1421 cut-off events. For 51652/51700 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 19245 event pairs. 0/1321 useless extension candidates. Maximal degree in co-relation 9874. Up to 162 conditions per place. [2020-02-10 23:00:32,237 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 108 transitions [2020-02-10 23:00:32,266 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 108 transitions [2020-02-10 23:00:32,267 INFO L479 AbstractCegarLoop]: Abstraction has has 223 places, 108 transitions [2020-02-10 23:00:32,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:32,641 INFO L129 PetriNetUnfolder]: 0/1265 cut-off events. [2020-02-10 23:00:32,641 INFO L130 PetriNetUnfolder]: For 51652/51700 co-relation queries the response was YES. [2020-02-10 23:00:32,641 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:32,641 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:32,642 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:32,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:32,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1688035910, now seen corresponding path program 17 times [2020-02-10 23:00:32,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:32,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291203121] [2020-02-10 23:00:32,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:32,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:32,868 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291203121] [2020-02-10 23:00:32,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:32,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:32,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43869045] [2020-02-10 23:00:32,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:32,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:32,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:32,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:32,870 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:32,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 108 transitions. Second operand 8 states. [2020-02-10 23:00:32,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:32,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:32,870 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:34,757 INFO L129 PetriNetUnfolder]: 171/1864 cut-off events. [2020-02-10 23:00:34,757 INFO L130 PetriNetUnfolder]: For 73549/73647 co-relation queries the response was YES. [2020-02-10 23:00:34,783 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14375 conditions, 1864 events. 171/1864 cut-off events. For 73549/73647 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 23591 event pairs. 1/1826 useless extension candidates. Maximal degree in co-relation 14263. Up to 415 conditions per place. [2020-02-10 23:00:34,824 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 98 selfloop transitions, 48 changer transitions 1/159 dead transitions. [2020-02-10 23:00:34,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:34,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:34,825 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:34,825 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:34,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:34,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:34,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:34,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:34,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:34,827 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:34,827 INFO L178 Difference]: Start difference. First operand has 223 places, 108 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:34,829 INFO L206 Difference]: Finished difference. Result has 236 places, 124 transitions [2020-02-10 23:00:34,829 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=2766, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3435, PETRI_PLACES=236, PETRI_TRANSITIONS=124} [2020-02-10 23:00:34,830 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 236 places, 124 transitions [2020-02-10 23:00:35,869 INFO L129 PetriNetUnfolder]: 0/1513 cut-off events. [2020-02-10 23:00:35,870 INFO L130 PetriNetUnfolder]: For 62614/62676 co-relation queries the response was YES. [2020-02-10 23:00:35,892 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11199 conditions, 1513 events. 0/1513 cut-off events. For 62614/62676 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 20701 event pairs. 1/1413 useless extension candidates. Maximal degree in co-relation 11081. Up to 173 conditions per place. [2020-02-10 23:00:35,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 124 transitions [2020-02-10 23:00:35,931 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 124 transitions [2020-02-10 23:00:35,932 INFO L479 AbstractCegarLoop]: Abstraction has has 235 places, 124 transitions [2020-02-10 23:00:35,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:36,366 INFO L129 PetriNetUnfolder]: 0/1346 cut-off events. [2020-02-10 23:00:36,366 INFO L130 PetriNetUnfolder]: For 62848/62913 co-relation queries the response was YES. [2020-02-10 23:00:36,366 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:36,367 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:36,367 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:36,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:36,367 INFO L82 PathProgramCache]: Analyzing trace with hash 869934560, now seen corresponding path program 18 times [2020-02-10 23:00:36,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:36,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862875718] [2020-02-10 23:00:36,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:36,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:36,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862875718] [2020-02-10 23:00:36,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:36,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:36,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085244222] [2020-02-10 23:00:36,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:36,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:36,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:36,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:36,635 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:36,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 124 transitions. Second operand 8 states. [2020-02-10 23:00:36,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:36,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:36,636 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:39,187 INFO L129 PetriNetUnfolder]: 156/2056 cut-off events. [2020-02-10 23:00:39,187 INFO L130 PetriNetUnfolder]: For 90430/90633 co-relation queries the response was YES. [2020-02-10 23:00:39,213 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16300 conditions, 2056 events. 156/2056 cut-off events. For 90430/90633 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 27005 event pairs. 1/2012 useless extension candidates. Maximal degree in co-relation 16181. Up to 411 conditions per place. [2020-02-10 23:00:39,255 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 113 selfloop transitions, 50 changer transitions 0/175 dead transitions. [2020-02-10 23:00:39,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:39,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:39,256 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:39,256 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:39,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:39,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:39,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:39,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:39,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:39,258 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:39,258 INFO L178 Difference]: Start difference. First operand has 235 places, 124 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:39,260 INFO L206 Difference]: Finished difference. Result has 248 places, 142 transitions [2020-02-10 23:00:39,261 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=3435, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4177, PETRI_PLACES=248, PETRI_TRANSITIONS=142} [2020-02-10 23:00:39,261 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 248 places, 142 transitions [2020-02-10 23:00:40,755 INFO L129 PetriNetUnfolder]: 0/1735 cut-off events. [2020-02-10 23:00:40,755 INFO L130 PetriNetUnfolder]: For 79733/79826 co-relation queries the response was YES. [2020-02-10 23:00:40,782 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13347 conditions, 1735 events. 0/1735 cut-off events. For 79733/79826 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24387 event pairs. 3/1627 useless extension candidates. Maximal degree in co-relation 13222. Up to 197 conditions per place. [2020-02-10 23:00:40,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 142 transitions [2020-02-10 23:00:40,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 142 transitions [2020-02-10 23:00:40,826 INFO L479 AbstractCegarLoop]: Abstraction has has 248 places, 142 transitions [2020-02-10 23:00:40,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:41,392 INFO L129 PetriNetUnfolder]: 0/1545 cut-off events. [2020-02-10 23:00:41,392 INFO L130 PetriNetUnfolder]: For 79733/79826 co-relation queries the response was YES. [2020-02-10 23:00:41,393 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:41,393 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:41,393 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:41,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:41,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1902347194, now seen corresponding path program 19 times [2020-02-10 23:00:41,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:41,394 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262692643] [2020-02-10 23:00:41,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:41,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262692643] [2020-02-10 23:00:41,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:41,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:41,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745347581] [2020-02-10 23:00:41,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:41,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:41,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:41,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:41,668 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:41,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 142 transitions. Second operand 8 states. [2020-02-10 23:00:41,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:41,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:41,668 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:44,565 INFO L129 PetriNetUnfolder]: 156/2050 cut-off events. [2020-02-10 23:00:44,565 INFO L130 PetriNetUnfolder]: For 102102/102492 co-relation queries the response was YES. [2020-02-10 23:00:44,605 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17141 conditions, 2050 events. 156/2050 cut-off events. For 102102/102492 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 26897 event pairs. 6/2009 useless extension candidates. Maximal degree in co-relation 17015. Up to 411 conditions per place. [2020-02-10 23:00:44,670 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 123 selfloop transitions, 37 changer transitions 1/173 dead transitions. [2020-02-10 23:00:44,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:44,672 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:44,672 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:44,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:44,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:44,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:44,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:44,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:44,673 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:44,673 INFO L178 Difference]: Start difference. First operand has 248 places, 142 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:44,675 INFO L206 Difference]: Finished difference. Result has 259 places, 147 transitions [2020-02-10 23:00:44,675 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=4177, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4461, PETRI_PLACES=259, PETRI_TRANSITIONS=147} [2020-02-10 23:00:44,675 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 259 places, 147 transitions [2020-02-10 23:00:46,080 INFO L129 PetriNetUnfolder]: 0/1727 cut-off events. [2020-02-10 23:00:46,080 INFO L130 PetriNetUnfolder]: For 87247/87344 co-relation queries the response was YES. [2020-02-10 23:00:46,106 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13726 conditions, 1727 events. 0/1727 cut-off events. For 87247/87344 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 24280 event pairs. 3/1621 useless extension candidates. Maximal degree in co-relation 13596. Up to 196 conditions per place. [2020-02-10 23:00:46,107 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 147 transitions [2020-02-10 23:00:46,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 147 transitions [2020-02-10 23:00:46,148 INFO L479 AbstractCegarLoop]: Abstraction has has 258 places, 147 transitions [2020-02-10 23:00:46,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:46,732 INFO L129 PetriNetUnfolder]: 0/1538 cut-off events. [2020-02-10 23:00:46,733 INFO L130 PetriNetUnfolder]: For 87121/87198 co-relation queries the response was YES. [2020-02-10 23:00:46,733 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:46,733 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:46,733 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:46,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:46,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1170851420, now seen corresponding path program 20 times [2020-02-10 23:00:46,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:46,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994195179] [2020-02-10 23:00:46,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:46,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994195179] [2020-02-10 23:00:46,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:46,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:46,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124802110] [2020-02-10 23:00:46,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:46,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:46,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:46,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:46,975 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:46,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 147 transitions. Second operand 8 states. [2020-02-10 23:00:46,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:46,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:46,976 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:50,274 INFO L129 PetriNetUnfolder]: 138/2310 cut-off events. [2020-02-10 23:00:50,274 INFO L130 PetriNetUnfolder]: For 121898/122115 co-relation queries the response was YES. [2020-02-10 23:00:50,312 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19224 conditions, 2310 events. 138/2310 cut-off events. For 121898/122115 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 31826 event pairs. 4/2270 useless extension candidates. Maximal degree in co-relation 19093. Up to 386 conditions per place. [2020-02-10 23:00:50,371 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 109 selfloop transitions, 85 changer transitions 0/206 dead transitions. [2020-02-10 23:00:50,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:50,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:50,372 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:50,372 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:50,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:50,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:50,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:50,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:50,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:50,374 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:50,374 INFO L178 Difference]: Start difference. First operand has 258 places, 147 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:50,376 INFO L206 Difference]: Finished difference. Result has 270 places, 168 transitions [2020-02-10 23:00:50,376 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=4461, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5572, PETRI_PLACES=270, PETRI_TRANSITIONS=168} [2020-02-10 23:00:50,376 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 270 places, 168 transitions [2020-02-10 23:00:52,103 INFO L129 PetriNetUnfolder]: 0/1965 cut-off events. [2020-02-10 23:00:52,103 INFO L130 PetriNetUnfolder]: For 109924/110164 co-relation queries the response was YES. [2020-02-10 23:00:52,131 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16104 conditions, 1965 events. 0/1965 cut-off events. For 109924/110164 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 28309 event pairs. 22/1871 useless extension candidates. Maximal degree in co-relation 15968. Up to 223 conditions per place. [2020-02-10 23:00:52,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 168 transitions [2020-02-10 23:00:52,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 168 transitions [2020-02-10 23:00:52,174 INFO L479 AbstractCegarLoop]: Abstraction has has 270 places, 168 transitions [2020-02-10 23:00:52,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:52,911 INFO L129 PetriNetUnfolder]: 0/1750 cut-off events. [2020-02-10 23:00:52,911 INFO L130 PetriNetUnfolder]: For 109782/110016 co-relation queries the response was YES. [2020-02-10 23:00:52,911 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:52,911 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:52,911 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:52,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:52,912 INFO L82 PathProgramCache]: Analyzing trace with hash 2087130494, now seen corresponding path program 21 times [2020-02-10 23:00:52,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:52,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101633813] [2020-02-10 23:00:52,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:53,152 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101633813] [2020-02-10 23:00:53,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:53,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:00:53,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799897989] [2020-02-10 23:00:53,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:00:53,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:53,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:00:53,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:00:53,154 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:00:53,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 168 transitions. Second operand 8 states. [2020-02-10 23:00:53,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:53,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:00:53,155 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:56,623 INFO L129 PetriNetUnfolder]: 138/2270 cut-off events. [2020-02-10 23:00:56,624 INFO L130 PetriNetUnfolder]: For 132970/133083 co-relation queries the response was YES. [2020-02-10 23:00:56,661 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19940 conditions, 2270 events. 138/2270 cut-off events. For 132970/133083 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 31029 event pairs. 1/2232 useless extension candidates. Maximal degree in co-relation 19803. Up to 511 conditions per place. [2020-02-10 23:00:56,720 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 157 selfloop transitions, 61 changer transitions 3/233 dead transitions. [2020-02-10 23:00:56,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:00:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:00:56,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:00:56,721 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:00:56,721 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:00:56,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:00:56,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:56,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:00:56,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:00:56,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:00:56,723 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:00:56,723 INFO L178 Difference]: Start difference. First operand has 270 places, 168 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:00:56,725 INFO L206 Difference]: Finished difference. Result has 283 places, 180 transitions [2020-02-10 23:00:56,725 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=5572, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6277, PETRI_PLACES=283, PETRI_TRANSITIONS=180} [2020-02-10 23:00:56,725 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 283 places, 180 transitions [2020-02-10 23:00:58,974 INFO L129 PetriNetUnfolder]: 0/1957 cut-off events. [2020-02-10 23:00:58,974 INFO L130 PetriNetUnfolder]: For 121621/121865 co-relation queries the response was YES. [2020-02-10 23:00:59,015 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16664 conditions, 1957 events. 0/1957 cut-off events. For 121621/121865 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 28195 event pairs. 22/1869 useless extension candidates. Maximal degree in co-relation 16521. Up to 222 conditions per place. [2020-02-10 23:00:59,015 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 180 transitions [2020-02-10 23:00:59,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 180 transitions [2020-02-10 23:00:59,081 INFO L479 AbstractCegarLoop]: Abstraction has has 282 places, 180 transitions [2020-02-10 23:00:59,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:00:59,849 INFO L129 PetriNetUnfolder]: 0/1743 cut-off events. [2020-02-10 23:00:59,850 INFO L130 PetriNetUnfolder]: For 121236/121463 co-relation queries the response was YES. [2020-02-10 23:00:59,850 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:59,850 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:59,850 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:00:59,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:59,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1213394152, now seen corresponding path program 22 times [2020-02-10 23:00:59,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:59,850 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366007225] [2020-02-10 23:00:59,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:00,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366007225] [2020-02-10 23:01:00,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:00,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:01:00,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540562194] [2020-02-10 23:01:00,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:01:00,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:00,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:01:00,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:01:00,066 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:01:00,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 180 transitions. Second operand 8 states. [2020-02-10 23:01:00,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:00,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:01:00,067 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:03,504 INFO L129 PetriNetUnfolder]: 138/2264 cut-off events. [2020-02-10 23:01:03,504 INFO L130 PetriNetUnfolder]: For 146244/146466 co-relation queries the response was YES. [2020-02-10 23:01:03,540 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20594 conditions, 2264 events. 138/2264 cut-off events. For 146244/146466 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 30937 event pairs. 1/2229 useless extension candidates. Maximal degree in co-relation 20450. Up to 459 conditions per place. [2020-02-10 23:01:03,596 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 144 selfloop transitions, 68 changer transitions 2/226 dead transitions. [2020-02-10 23:01:03,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:01:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:01:03,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:01:03,597 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:01:03,597 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:01:03,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:01:03,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:03,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:01:03,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:01:03,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:01:03,598 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:01:03,598 INFO L178 Difference]: Start difference. First operand has 282 places, 180 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:01:03,600 INFO L206 Difference]: Finished difference. Result has 291 places, 182 transitions [2020-02-10 23:01:03,601 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=6277, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6467, PETRI_PLACES=291, PETRI_TRANSITIONS=182} [2020-02-10 23:01:03,601 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 291 places, 182 transitions [2020-02-10 23:01:05,852 INFO L129 PetriNetUnfolder]: 0/1948 cut-off events. [2020-02-10 23:01:05,852 INFO L130 PetriNetUnfolder]: For 128902/129133 co-relation queries the response was YES. [2020-02-10 23:01:05,887 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17054 conditions, 1948 events. 0/1948 cut-off events. For 128902/129133 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 28050 event pairs. 7/1844 useless extension candidates. Maximal degree in co-relation 16908. Up to 221 conditions per place. [2020-02-10 23:01:05,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 182 transitions [2020-02-10 23:01:05,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 182 transitions [2020-02-10 23:01:05,942 INFO L479 AbstractCegarLoop]: Abstraction has has 290 places, 182 transitions [2020-02-10 23:01:05,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:01:06,746 INFO L129 PetriNetUnfolder]: 0/1735 cut-off events. [2020-02-10 23:01:06,746 INFO L130 PetriNetUnfolder]: For 129410/129643 co-relation queries the response was YES. [2020-02-10 23:01:06,747 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:06,747 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:06,747 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:01:06,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:06,747 INFO L82 PathProgramCache]: Analyzing trace with hash -908330078, now seen corresponding path program 23 times [2020-02-10 23:01:06,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:06,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706956234] [2020-02-10 23:01:06,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:07,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:07,015 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706956234] [2020-02-10 23:01:07,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:07,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:01:07,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921927504] [2020-02-10 23:01:07,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:01:07,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:07,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:01:07,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:01:07,016 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:01:07,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 182 transitions. Second operand 8 states. [2020-02-10 23:01:07,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:07,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:01:07,016 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:11,269 INFO L129 PetriNetUnfolder]: 124/2358 cut-off events. [2020-02-10 23:01:11,269 INFO L130 PetriNetUnfolder]: For 160789/161011 co-relation queries the response was YES. [2020-02-10 23:01:11,314 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21740 conditions, 2358 events. 124/2358 cut-off events. For 160789/161011 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 32808 event pairs. 1/2320 useless extension candidates. Maximal degree in co-relation 21593. Up to 386 conditions per place. [2020-02-10 23:01:11,385 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 119 selfloop transitions, 99 changer transitions 0/230 dead transitions. [2020-02-10 23:01:11,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:01:11,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:01:11,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:01:11,388 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:01:11,388 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:01:11,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:01:11,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:11,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:01:11,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:01:11,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:01:11,390 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:01:11,390 INFO L178 Difference]: Start difference. First operand has 290 places, 182 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:01:11,398 INFO L206 Difference]: Finished difference. Result has 301 places, 193 transitions [2020-02-10 23:01:11,399 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=6467, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7190, PETRI_PLACES=301, PETRI_TRANSITIONS=193} [2020-02-10 23:01:11,399 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 301 places, 193 transitions [2020-02-10 23:01:14,050 INFO L129 PetriNetUnfolder]: 0/2088 cut-off events. [2020-02-10 23:01:14,050 INFO L130 PetriNetUnfolder]: For 147162/147370 co-relation queries the response was YES. [2020-02-10 23:01:14,089 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18712 conditions, 2088 events. 0/2088 cut-off events. For 147162/147370 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 30392 event pairs. 4/1982 useless extension candidates. Maximal degree in co-relation 18561. Up to 236 conditions per place. [2020-02-10 23:01:14,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 301 places, 193 transitions [2020-02-10 23:01:14,149 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 301 places, 193 transitions [2020-02-10 23:01:14,149 INFO L479 AbstractCegarLoop]: Abstraction has has 301 places, 193 transitions [2020-02-10 23:01:14,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:01:15,045 INFO L129 PetriNetUnfolder]: 0/1861 cut-off events. [2020-02-10 23:01:15,045 INFO L130 PetriNetUnfolder]: For 147019/147149 co-relation queries the response was YES. [2020-02-10 23:01:15,045 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:15,045 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:15,045 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:01:15,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:15,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1778279122, now seen corresponding path program 24 times [2020-02-10 23:01:15,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:15,046 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587083392] [2020-02-10 23:01:15,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:15,312 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587083392] [2020-02-10 23:01:15,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:15,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:01:15,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557737928] [2020-02-10 23:01:15,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:01:15,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:15,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:01:15,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:01:15,313 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:01:15,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 193 transitions. Second operand 8 states. [2020-02-10 23:01:15,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:15,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:01:15,314 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:20,105 INFO L129 PetriNetUnfolder]: 110/2529 cut-off events. [2020-02-10 23:01:20,105 INFO L130 PetriNetUnfolder]: For 185844/186066 co-relation queries the response was YES. [2020-02-10 23:01:20,154 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23939 conditions, 2529 events. 110/2529 cut-off events. For 185844/186066 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 35888 event pairs. 1/2489 useless extension candidates. Maximal degree in co-relation 23787. Up to 511 conditions per place. [2020-02-10 23:01:20,248 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 181 selfloop transitions, 70 changer transitions 0/263 dead transitions. [2020-02-10 23:01:20,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:01:20,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:01:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:01:20,250 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:01:20,250 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:01:20,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:01:20,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:20,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:01:20,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:01:20,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:01:20,252 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:01:20,252 INFO L178 Difference]: Start difference. First operand has 301 places, 193 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:01:20,255 INFO L206 Difference]: Finished difference. Result has 314 places, 212 transitions [2020-02-10 23:01:20,256 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=7190, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8215, PETRI_PLACES=314, PETRI_TRANSITIONS=212} [2020-02-10 23:01:20,256 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 314 places, 212 transitions [2020-02-10 23:01:23,452 INFO L129 PetriNetUnfolder]: 0/2299 cut-off events. [2020-02-10 23:01:23,452 INFO L130 PetriNetUnfolder]: For 176186/176269 co-relation queries the response was YES. [2020-02-10 23:01:23,495 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21302 conditions, 2299 events. 0/2299 cut-off events. For 176186/176269 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 34032 event pairs. 2/2183 useless extension candidates. Maximal degree in co-relation 21144. Up to 259 conditions per place. [2020-02-10 23:01:23,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 212 transitions [2020-02-10 23:01:23,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 212 transitions [2020-02-10 23:01:23,560 INFO L479 AbstractCegarLoop]: Abstraction has has 314 places, 212 transitions [2020-02-10 23:01:23,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:01:24,646 INFO L129 PetriNetUnfolder]: 0/2050 cut-off events. [2020-02-10 23:01:24,646 INFO L130 PetriNetUnfolder]: For 175388/175453 co-relation queries the response was YES. [2020-02-10 23:01:24,647 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:24,647 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:24,647 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:01:24,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:24,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1035662118, now seen corresponding path program 25 times [2020-02-10 23:01:24,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:24,647 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647166441] [2020-02-10 23:01:24,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:24,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647166441] [2020-02-10 23:01:24,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:24,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:01:24,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181414871] [2020-02-10 23:01:24,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:01:24,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:24,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:01:24,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:01:24,905 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:01:24,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 212 transitions. Second operand 8 states. [2020-02-10 23:01:24,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:24,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:01:24,906 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:29,881 INFO L129 PetriNetUnfolder]: 110/2531 cut-off events. [2020-02-10 23:01:29,882 INFO L130 PetriNetUnfolder]: For 201450/201648 co-relation queries the response was YES. [2020-02-10 23:01:29,925 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24731 conditions, 2531 events. 110/2531 cut-off events. For 201450/201648 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 35949 event pairs. 1/2488 useless extension candidates. Maximal degree in co-relation 24572. Up to 596 conditions per place. [2020-02-10 23:01:29,989 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 162 selfloop transitions, 71 changer transitions 1/246 dead transitions. [2020-02-10 23:01:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:01:29,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:01:29,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:01:29,990 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:01:29,991 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:01:29,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:01:29,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:29,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:01:29,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:01:29,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:01:29,993 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:01:29,993 INFO L178 Difference]: Start difference. First operand has 314 places, 212 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:01:29,996 INFO L206 Difference]: Finished difference. Result has 324 places, 221 transitions [2020-02-10 23:01:29,997 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=8215, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8729, PETRI_PLACES=324, PETRI_TRANSITIONS=221} [2020-02-10 23:01:29,997 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 324 places, 221 transitions [2020-02-10 23:01:33,406 INFO L129 PetriNetUnfolder]: 0/2296 cut-off events. [2020-02-10 23:01:33,406 INFO L130 PetriNetUnfolder]: For 186762/186827 co-relation queries the response was YES. [2020-02-10 23:01:33,452 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21789 conditions, 2296 events. 0/2296 cut-off events. For 186762/186827 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 33972 event pairs. 0/2178 useless extension candidates. Maximal degree in co-relation 21627. Up to 259 conditions per place. [2020-02-10 23:01:33,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 221 transitions [2020-02-10 23:01:33,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 323 places, 221 transitions [2020-02-10 23:01:33,522 INFO L479 AbstractCegarLoop]: Abstraction has has 323 places, 221 transitions [2020-02-10 23:01:33,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:01:34,730 INFO L129 PetriNetUnfolder]: 0/2048 cut-off events. [2020-02-10 23:01:34,730 INFO L130 PetriNetUnfolder]: For 186762/186827 co-relation queries the response was YES. [2020-02-10 23:01:34,730 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:34,730 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:34,730 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:01:34,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:34,730 INFO L82 PathProgramCache]: Analyzing trace with hash 614219612, now seen corresponding path program 26 times [2020-02-10 23:01:34,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:34,731 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387837347] [2020-02-10 23:01:34,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:34,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387837347] [2020-02-10 23:01:34,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:34,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:01:34,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566040825] [2020-02-10 23:01:34,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:01:34,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:34,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:01:34,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:01:34,969 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:01:34,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 221 transitions. Second operand 8 states. [2020-02-10 23:01:34,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:34,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:01:34,969 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:40,143 INFO L129 PetriNetUnfolder]: 110/2526 cut-off events. [2020-02-10 23:01:40,143 INFO L130 PetriNetUnfolder]: For 214021/214373 co-relation queries the response was YES. [2020-02-10 23:01:40,190 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25258 conditions, 2526 events. 110/2526 cut-off events. For 214021/214373 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 35833 event pairs. 2/2481 useless extension candidates. Maximal degree in co-relation 25095. Up to 612 conditions per place. [2020-02-10 23:01:40,258 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 168 selfloop transitions, 66 changer transitions 1/247 dead transitions. [2020-02-10 23:01:40,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:01:40,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:01:40,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:01:40,259 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:01:40,259 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:01:40,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:01:40,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:40,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:01:40,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:01:40,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:01:40,261 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:01:40,261 INFO L178 Difference]: Start difference. First operand has 323 places, 221 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:01:40,265 INFO L206 Difference]: Finished difference. Result has 332 places, 221 transitions [2020-02-10 23:01:40,266 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=8729, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8848, PETRI_PLACES=332, PETRI_TRANSITIONS=221} [2020-02-10 23:01:40,266 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 332 places, 221 transitions [2020-02-10 23:01:43,546 INFO L129 PetriNetUnfolder]: 0/2290 cut-off events. [2020-02-10 23:01:43,546 INFO L130 PetriNetUnfolder]: For 196295/196360 co-relation queries the response was YES. [2020-02-10 23:01:43,584 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22204 conditions, 2290 events. 0/2290 cut-off events. For 196295/196360 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 33909 event pairs. 0/2172 useless extension candidates. Maximal degree in co-relation 22039. Up to 258 conditions per place. [2020-02-10 23:01:43,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 221 transitions [2020-02-10 23:01:43,641 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 221 transitions [2020-02-10 23:01:43,641 INFO L479 AbstractCegarLoop]: Abstraction has has 331 places, 221 transitions [2020-02-10 23:01:43,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:01:44,813 INFO L129 PetriNetUnfolder]: 0/2043 cut-off events. [2020-02-10 23:01:44,813 INFO L130 PetriNetUnfolder]: For 196295/196360 co-relation queries the response was YES. [2020-02-10 23:01:44,813 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:44,813 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:44,813 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:01:44,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:44,814 INFO L82 PathProgramCache]: Analyzing trace with hash -231795060, now seen corresponding path program 27 times [2020-02-10 23:01:44,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:44,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343959158] [2020-02-10 23:01:44,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:45,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343959158] [2020-02-10 23:01:45,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:45,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:01:45,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241945672] [2020-02-10 23:01:45,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:01:45,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:45,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:01:45,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:01:45,055 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:01:45,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 221 transitions. Second operand 8 states. [2020-02-10 23:01:45,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:45,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:01:45,056 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:50,308 INFO L129 PetriNetUnfolder]: 110/2522 cut-off events. [2020-02-10 23:01:50,308 INFO L130 PetriNetUnfolder]: For 225037/225389 co-relation queries the response was YES. [2020-02-10 23:01:50,360 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25724 conditions, 2522 events. 110/2522 cut-off events. For 225037/225389 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 35765 event pairs. 6/2483 useless extension candidates. Maximal degree in co-relation 25558. Up to 494 conditions per place. [2020-02-10 23:01:50,436 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 135 selfloop transitions, 87 changer transitions 1/235 dead transitions. [2020-02-10 23:01:50,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:01:50,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:01:50,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:01:50,438 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:01:50,438 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:01:50,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:01:50,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:50,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:01:50,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:01:50,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:01:50,440 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:01:50,440 INFO L178 Difference]: Start difference. First operand has 331 places, 221 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:01:50,444 INFO L206 Difference]: Finished difference. Result has 340 places, 223 transitions [2020-02-10 23:01:50,444 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=8848, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9098, PETRI_PLACES=340, PETRI_TRANSITIONS=223} [2020-02-10 23:01:50,444 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 340 places, 223 transitions [2020-02-10 23:01:53,700 INFO L129 PetriNetUnfolder]: 0/2287 cut-off events. [2020-02-10 23:01:53,700 INFO L130 PetriNetUnfolder]: For 207254/207319 co-relation queries the response was YES. [2020-02-10 23:01:53,746 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22691 conditions, 2287 events. 0/2287 cut-off events. For 207254/207319 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 33783 event pairs. 0/2169 useless extension candidates. Maximal degree in co-relation 22523. Up to 258 conditions per place. [2020-02-10 23:01:53,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 223 transitions [2020-02-10 23:01:53,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 223 transitions [2020-02-10 23:01:53,814 INFO L479 AbstractCegarLoop]: Abstraction has has 339 places, 223 transitions [2020-02-10 23:01:53,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:01:55,000 INFO L129 PetriNetUnfolder]: 0/2041 cut-off events. [2020-02-10 23:01:55,000 INFO L130 PetriNetUnfolder]: For 207254/207319 co-relation queries the response was YES. [2020-02-10 23:01:55,000 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:55,001 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:55,001 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:01:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:55,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1178438940, now seen corresponding path program 28 times [2020-02-10 23:01:55,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:55,001 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380322731] [2020-02-10 23:01:55,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:55,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380322731] [2020-02-10 23:01:55,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:55,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:01:55,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248457228] [2020-02-10 23:01:55,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:01:55,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:55,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:01:55,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:01:55,252 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:01:55,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 223 transitions. Second operand 8 states. [2020-02-10 23:01:55,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:55,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:01:55,253 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:00,340 INFO L129 PetriNetUnfolder]: 110/2519 cut-off events. [2020-02-10 23:02:00,340 INFO L130 PetriNetUnfolder]: For 236979/237331 co-relation queries the response was YES. [2020-02-10 23:02:00,389 INFO L76 FinitePrefix]: Finished finitePrefix Result has 26252 conditions, 2519 events. 110/2519 cut-off events. For 236979/237331 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 35723 event pairs. 6/2480 useless extension candidates. Maximal degree in co-relation 26083. Up to 596 conditions per place. [2020-02-10 23:02:00,457 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 173 selfloop transitions, 69 changer transitions 1/255 dead transitions. [2020-02-10 23:02:00,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:02:00,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:02:00,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:02:00,458 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:02:00,459 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:02:00,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:02:00,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:00,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:02:00,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:02:00,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:02:00,461 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:02:00,461 INFO L178 Difference]: Start difference. First operand has 339 places, 223 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:02:00,464 INFO L206 Difference]: Finished difference. Result has 350 places, 240 transitions [2020-02-10 23:02:00,464 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=9098, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10115, PETRI_PLACES=350, PETRI_TRANSITIONS=240} [2020-02-10 23:02:00,465 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 350 places, 240 transitions [2020-02-10 23:02:04,128 INFO L129 PetriNetUnfolder]: 0/2280 cut-off events. [2020-02-10 23:02:04,128 INFO L130 PetriNetUnfolder]: For 220504/220569 co-relation queries the response was YES. [2020-02-10 23:02:04,168 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23222 conditions, 2280 events. 0/2280 cut-off events. For 220504/220569 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 33709 event pairs. 0/2161 useless extension candidates. Maximal degree in co-relation 23049. Up to 257 conditions per place. [2020-02-10 23:02:04,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 240 transitions [2020-02-10 23:02:04,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 240 transitions [2020-02-10 23:02:04,227 INFO L479 AbstractCegarLoop]: Abstraction has has 349 places, 240 transitions [2020-02-10 23:02:04,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:02:05,452 INFO L129 PetriNetUnfolder]: 0/2035 cut-off events. [2020-02-10 23:02:05,452 INFO L130 PetriNetUnfolder]: For 220504/220569 co-relation queries the response was YES. [2020-02-10 23:02:05,452 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:05,452 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:05,452 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:02:05,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:05,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1506821822, now seen corresponding path program 29 times [2020-02-10 23:02:05,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:05,453 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255109737] [2020-02-10 23:02:05,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:05,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:05,694 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255109737] [2020-02-10 23:02:05,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:05,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:02:05,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240315882] [2020-02-10 23:02:05,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:02:05,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:05,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:02:05,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:02:05,695 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:02:05,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 240 transitions. Second operand 8 states. [2020-02-10 23:02:05,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:05,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:02:05,696 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:11,231 INFO L129 PetriNetUnfolder]: 110/2512 cut-off events. [2020-02-10 23:02:11,231 INFO L130 PetriNetUnfolder]: For 251840/252192 co-relation queries the response was YES. [2020-02-10 23:02:11,285 INFO L76 FinitePrefix]: Finished finitePrefix Result has 26834 conditions, 2512 events. 110/2512 cut-off events. For 251840/252192 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 35627 event pairs. 6/2473 useless extension candidates. Maximal degree in co-relation 26660. Up to 596 conditions per place. [2020-02-10 23:02:11,364 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 181 selfloop transitions, 62 changer transitions 1/256 dead transitions. [2020-02-10 23:02:11,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:02:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:02:11,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:02:11,365 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:02:11,365 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:02:11,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:02:11,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:11,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:02:11,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:02:11,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:02:11,366 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:02:11,366 INFO L178 Difference]: Start difference. First operand has 349 places, 240 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:02:11,369 INFO L206 Difference]: Finished difference. Result has 358 places, 241 transitions [2020-02-10 23:02:11,370 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=10115, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10312, PETRI_PLACES=358, PETRI_TRANSITIONS=241} [2020-02-10 23:02:11,370 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 358 places, 241 transitions [2020-02-10 23:02:14,937 INFO L129 PetriNetUnfolder]: 0/2272 cut-off events. [2020-02-10 23:02:14,938 INFO L130 PetriNetUnfolder]: For 231385/231450 co-relation queries the response was YES. [2020-02-10 23:02:14,986 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23612 conditions, 2272 events. 0/2272 cut-off events. For 231385/231450 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 33594 event pairs. 0/2154 useless extension candidates. Maximal degree in co-relation 23436. Up to 256 conditions per place. [2020-02-10 23:02:14,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 358 places, 241 transitions [2020-02-10 23:02:15,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 357 places, 241 transitions [2020-02-10 23:02:15,059 INFO L479 AbstractCegarLoop]: Abstraction has has 357 places, 241 transitions [2020-02-10 23:02:15,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:02:16,373 INFO L129 PetriNetUnfolder]: 0/2028 cut-off events. [2020-02-10 23:02:16,373 INFO L130 PetriNetUnfolder]: For 231385/231450 co-relation queries the response was YES. [2020-02-10 23:02:16,373 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:16,373 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:16,373 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:02:16,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:16,373 INFO L82 PathProgramCache]: Analyzing trace with hash 2008189464, now seen corresponding path program 30 times [2020-02-10 23:02:16,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:16,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566891033] [2020-02-10 23:02:16,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:16,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:16,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566891033] [2020-02-10 23:02:16,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:16,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:02:16,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816529289] [2020-02-10 23:02:16,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:02:16,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:16,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:02:16,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:02:16,590 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:02:16,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 241 transitions. Second operand 8 states. [2020-02-10 23:02:16,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:16,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:02:16,591 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:21,642 INFO L129 PetriNetUnfolder]: 110/2496 cut-off events. [2020-02-10 23:02:21,642 INFO L130 PetriNetUnfolder]: For 263483/263728 co-relation queries the response was YES. [2020-02-10 23:02:21,691 INFO L76 FinitePrefix]: Finished finitePrefix Result has 27252 conditions, 2496 events. 110/2496 cut-off events. For 263483/263728 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 35342 event pairs. 3/2456 useless extension candidates. Maximal degree in co-relation 27075. Up to 541 conditions per place. [2020-02-10 23:02:21,762 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 189 selfloop transitions, 92 changer transitions 4/297 dead transitions. [2020-02-10 23:02:21,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:02:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:02:21,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:02:21,763 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:02:21,763 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:02:21,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:02:21,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:21,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:02:21,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:02:21,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:02:21,764 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:02:21,764 INFO L178 Difference]: Start difference. First operand has 357 places, 241 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:02:21,767 INFO L206 Difference]: Finished difference. Result has 367 places, 248 transitions [2020-02-10 23:02:21,768 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=10312, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10770, PETRI_PLACES=367, PETRI_TRANSITIONS=248} [2020-02-10 23:02:21,768 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 367 places, 248 transitions [2020-02-10 23:02:24,727 INFO L129 PetriNetUnfolder]: 0/2266 cut-off events. [2020-02-10 23:02:24,727 INFO L130 PetriNetUnfolder]: For 242782/242847 co-relation queries the response was YES. [2020-02-10 23:02:24,771 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24109 conditions, 2266 events. 0/2266 cut-off events. For 242782/242847 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 33464 event pairs. 0/2148 useless extension candidates. Maximal degree in co-relation 23929. Up to 255 conditions per place. [2020-02-10 23:02:24,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 248 transitions [2020-02-10 23:02:24,833 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 366 places, 248 transitions [2020-02-10 23:02:24,833 INFO L479 AbstractCegarLoop]: Abstraction has has 366 places, 248 transitions [2020-02-10 23:02:24,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:02:26,108 INFO L129 PetriNetUnfolder]: 0/2023 cut-off events. [2020-02-10 23:02:26,109 INFO L130 PetriNetUnfolder]: For 243016/243104 co-relation queries the response was YES. [2020-02-10 23:02:26,109 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:26,109 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:26,109 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:02:26,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:26,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1910128712, now seen corresponding path program 31 times [2020-02-10 23:02:26,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:26,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222565768] [2020-02-10 23:02:26,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:26,351 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222565768] [2020-02-10 23:02:26,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:26,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:02:26,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457783440] [2020-02-10 23:02:26,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:02:26,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:26,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:02:26,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:02:26,353 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:02:26,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 248 transitions. Second operand 8 states. [2020-02-10 23:02:26,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:26,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:02:26,353 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:32,024 INFO L129 PetriNetUnfolder]: 110/2496 cut-off events. [2020-02-10 23:02:32,024 INFO L130 PetriNetUnfolder]: For 275773/275981 co-relation queries the response was YES. [2020-02-10 23:02:32,075 INFO L76 FinitePrefix]: Finished finitePrefix Result has 27798 conditions, 2496 events. 110/2496 cut-off events. For 275773/275981 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 35340 event pairs. 1/2452 useless extension candidates. Maximal degree in co-relation 27617. Up to 481 conditions per place. [2020-02-10 23:02:32,148 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 166 selfloop transitions, 85 changer transitions 3/266 dead transitions. [2020-02-10 23:02:32,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:02:32,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:02:32,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:02:32,149 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:02:32,150 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:02:32,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:02:32,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:32,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:02:32,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:02:32,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:02:32,152 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:02:32,152 INFO L178 Difference]: Start difference. First operand has 366 places, 248 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:02:32,155 INFO L206 Difference]: Finished difference. Result has 375 places, 249 transitions [2020-02-10 23:02:32,156 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=10770, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11021, PETRI_PLACES=375, PETRI_TRANSITIONS=249} [2020-02-10 23:02:32,156 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 375 places, 249 transitions [2020-02-10 23:02:36,592 INFO L129 PetriNetUnfolder]: 0/2257 cut-off events. [2020-02-10 23:02:36,593 INFO L130 PetriNetUnfolder]: For 255346/255434 co-relation queries the response was YES. [2020-02-10 23:02:36,640 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24547 conditions, 2257 events. 0/2257 cut-off events. For 255346/255434 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 33306 event pairs. 1/2139 useless extension candidates. Maximal degree in co-relation 24364. Up to 254 conditions per place. [2020-02-10 23:02:36,640 INFO L82 GeneralOperation]: Start removeDead. Operand has 375 places, 249 transitions [2020-02-10 23:02:36,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 249 transitions [2020-02-10 23:02:36,709 INFO L479 AbstractCegarLoop]: Abstraction has has 374 places, 249 transitions [2020-02-10 23:02:36,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:02:38,020 INFO L129 PetriNetUnfolder]: 0/2015 cut-off events. [2020-02-10 23:02:38,020 INFO L130 PetriNetUnfolder]: For 255346/255434 co-relation queries the response was YES. [2020-02-10 23:02:38,021 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:38,021 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:38,021 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:02:38,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:38,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1646023494, now seen corresponding path program 32 times [2020-02-10 23:02:38,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:38,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438720477] [2020-02-10 23:02:38,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:38,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:38,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438720477] [2020-02-10 23:02:38,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:38,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:02:38,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172888657] [2020-02-10 23:02:38,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:02:38,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:38,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:02:38,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:02:38,294 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:02:38,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 249 transitions. Second operand 8 states. [2020-02-10 23:02:38,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:38,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:02:38,294 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:44,498 INFO L129 PetriNetUnfolder]: 110/2485 cut-off events. [2020-02-10 23:02:44,498 INFO L130 PetriNetUnfolder]: For 289766/289998 co-relation queries the response was YES. [2020-02-10 23:02:44,549 INFO L76 FinitePrefix]: Finished finitePrefix Result has 28272 conditions, 2485 events. 110/2485 cut-off events. For 289766/289998 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 35120 event pairs. 1/2446 useless extension candidates. Maximal degree in co-relation 28088. Up to 476 conditions per place. [2020-02-10 23:02:44,622 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 193 selfloop transitions, 79 changer transitions 1/285 dead transitions. [2020-02-10 23:02:44,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:02:44,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:02:44,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:02:44,624 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:02:44,624 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:02:44,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:02:44,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:44,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:02:44,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:02:44,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:02:44,626 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:02:44,626 INFO L178 Difference]: Start difference. First operand has 374 places, 249 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:02:44,631 INFO L206 Difference]: Finished difference. Result has 386 places, 257 transitions [2020-02-10 23:02:44,631 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11021, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11661, PETRI_PLACES=386, PETRI_TRANSITIONS=257} [2020-02-10 23:02:44,632 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 386 places, 257 transitions [2020-02-10 23:02:48,834 INFO L129 PetriNetUnfolder]: 0/2249 cut-off events. [2020-02-10 23:02:48,835 INFO L130 PetriNetUnfolder]: For 271060/271148 co-relation queries the response was YES. [2020-02-10 23:02:48,889 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25075 conditions, 2249 events. 0/2249 cut-off events. For 271060/271148 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 33187 event pairs. 1/2129 useless extension candidates. Maximal degree in co-relation 24886. Up to 253 conditions per place. [2020-02-10 23:02:48,889 INFO L82 GeneralOperation]: Start removeDead. Operand has 386 places, 257 transitions [2020-02-10 23:02:48,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 385 places, 257 transitions [2020-02-10 23:02:48,968 INFO L479 AbstractCegarLoop]: Abstraction has has 385 places, 257 transitions [2020-02-10 23:02:48,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:02:50,426 INFO L129 PetriNetUnfolder]: 0/2008 cut-off events. [2020-02-10 23:02:50,426 INFO L130 PetriNetUnfolder]: For 271188/271264 co-relation queries the response was YES. [2020-02-10 23:02:50,426 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:50,426 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:50,427 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:02:50,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:50,427 INFO L82 PathProgramCache]: Analyzing trace with hash -88501686, now seen corresponding path program 33 times [2020-02-10 23:02:50,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:50,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557592981] [2020-02-10 23:02:50,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:50,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:50,657 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557592981] [2020-02-10 23:02:50,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:50,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:02:50,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530921322] [2020-02-10 23:02:50,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:02:50,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:50,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:02:50,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:02:50,659 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:02:50,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 257 transitions. Second operand 8 states. [2020-02-10 23:02:50,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:50,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:02:50,660 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:59,490 INFO L129 PetriNetUnfolder]: 90/3122 cut-off events. [2020-02-10 23:02:59,490 INFO L130 PetriNetUnfolder]: For 386150/386382 co-relation queries the response was YES. [2020-02-10 23:02:59,560 INFO L76 FinitePrefix]: Finished finitePrefix Result has 35639 conditions, 3122 events. 90/3122 cut-off events. For 386150/386382 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 47371 event pairs. 1/3079 useless extension candidates. Maximal degree in co-relation 35449. Up to 547 conditions per place. [2020-02-10 23:02:59,665 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 228 selfloop transitions, 132 changer transitions 0/372 dead transitions. [2020-02-10 23:02:59,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:02:59,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:02:59,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:02:59,666 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:02:59,666 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:02:59,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:02:59,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:59,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:02:59,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:02:59,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:02:59,668 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:02:59,668 INFO L178 Difference]: Start difference. First operand has 385 places, 257 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:02:59,672 INFO L206 Difference]: Finished difference. Result has 398 places, 303 transitions [2020-02-10 23:02:59,672 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11661, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14403, PETRI_PLACES=398, PETRI_TRANSITIONS=303} [2020-02-10 23:02:59,672 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 398 places, 303 transitions [2020-02-10 23:03:04,420 INFO L129 PetriNetUnfolder]: 0/2856 cut-off events. [2020-02-10 23:03:04,420 INFO L130 PetriNetUnfolder]: For 370359/370458 co-relation queries the response was YES. [2020-02-10 23:03:04,484 INFO L76 FinitePrefix]: Finished finitePrefix Result has 33094 conditions, 2856 events. 0/2856 cut-off events. For 370359/370458 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 44369 event pairs. 4/2743 useless extension candidates. Maximal degree in co-relation 32898. Up to 323 conditions per place. [2020-02-10 23:03:04,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 398 places, 303 transitions [2020-02-10 23:03:04,573 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 303 transitions [2020-02-10 23:03:04,573 INFO L479 AbstractCegarLoop]: Abstraction has has 398 places, 303 transitions [2020-02-10 23:03:04,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:03:06,454 INFO L129 PetriNetUnfolder]: 0/2546 cut-off events. [2020-02-10 23:03:06,455 INFO L130 PetriNetUnfolder]: For 370681/370779 co-relation queries the response was YES. [2020-02-10 23:03:06,455 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:06,455 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:06,455 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:03:06,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:06,455 INFO L82 PathProgramCache]: Analyzing trace with hash -7699552, now seen corresponding path program 34 times [2020-02-10 23:03:06,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:06,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877621499] [2020-02-10 23:03:06,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:06,766 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877621499] [2020-02-10 23:03:06,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:06,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:03:06,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738137249] [2020-02-10 23:03:06,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:03:06,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:06,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:03:06,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:03:06,770 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:03:06,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 303 transitions. Second operand 8 states. [2020-02-10 23:03:06,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:06,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:03:06,770 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:14,763 INFO L129 PetriNetUnfolder]: 90/3046 cut-off events. [2020-02-10 23:03:14,763 INFO L130 PetriNetUnfolder]: For 407135/407375 co-relation queries the response was YES. [2020-02-10 23:03:14,830 INFO L76 FinitePrefix]: Finished finitePrefix Result has 36594 conditions, 3046 events. 90/3046 cut-off events. For 407135/407375 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 45928 event pairs. 1/2996 useless extension candidates. Maximal degree in co-relation 36397. Up to 550 conditions per place. [2020-02-10 23:03:14,924 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 220 selfloop transitions, 103 changer transitions 1/336 dead transitions. [2020-02-10 23:03:14,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:03:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:03:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:03:14,925 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:03:14,925 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:03:14,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:03:14,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:14,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:03:14,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:03:14,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:03:14,926 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:03:14,927 INFO L178 Difference]: Start difference. First operand has 398 places, 303 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:03:14,931 INFO L206 Difference]: Finished difference. Result has 410 places, 313 transitions [2020-02-10 23:03:14,931 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=14403, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15122, PETRI_PLACES=410, PETRI_TRANSITIONS=313} [2020-02-10 23:03:14,931 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 410 places, 313 transitions [2020-02-10 23:03:20,899 INFO L129 PetriNetUnfolder]: 0/2849 cut-off events. [2020-02-10 23:03:20,899 INFO L130 PetriNetUnfolder]: For 391318/391432 co-relation queries the response was YES. [2020-02-10 23:03:20,968 INFO L76 FinitePrefix]: Finished finitePrefix Result has 33878 conditions, 2849 events. 0/2849 cut-off events. For 391318/391432 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 44233 event pairs. 3/2735 useless extension candidates. Maximal degree in co-relation 33676. Up to 322 conditions per place. [2020-02-10 23:03:20,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 410 places, 313 transitions [2020-02-10 23:03:21,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 313 transitions [2020-02-10 23:03:21,067 INFO L479 AbstractCegarLoop]: Abstraction has has 409 places, 313 transitions [2020-02-10 23:03:21,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:03:23,054 INFO L129 PetriNetUnfolder]: 0/2540 cut-off events. [2020-02-10 23:03:23,054 INFO L130 PetriNetUnfolder]: For 391318/391432 co-relation queries the response was YES. [2020-02-10 23:03:23,054 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:23,054 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:23,055 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:03:23,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:23,055 INFO L82 PathProgramCache]: Analyzing trace with hash 2140703426, now seen corresponding path program 35 times [2020-02-10 23:03:23,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:23,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034722171] [2020-02-10 23:03:23,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:23,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034722171] [2020-02-10 23:03:23,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:23,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:03:23,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639457204] [2020-02-10 23:03:23,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:03:23,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:23,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:03:23,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:03:23,291 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:03:23,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 313 transitions. Second operand 8 states. [2020-02-10 23:03:23,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:23,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:03:23,292 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:31,188 INFO L129 PetriNetUnfolder]: 90/3038 cut-off events. [2020-02-10 23:03:31,188 INFO L130 PetriNetUnfolder]: For 431158/432053 co-relation queries the response was YES. [2020-02-10 23:03:31,258 INFO L76 FinitePrefix]: Finished finitePrefix Result has 37406 conditions, 3038 events. 90/3038 cut-off events. For 431158/432053 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 45746 event pairs. 2/2986 useless extension candidates. Maximal degree in co-relation 37203. Up to 599 conditions per place. [2020-02-10 23:03:31,355 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 222 selfloop transitions, 98 changer transitions 2/334 dead transitions. [2020-02-10 23:03:31,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:03:31,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:03:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:03:31,357 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:03:31,357 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:03:31,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:03:31,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:31,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:03:31,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:03:31,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:03:31,358 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:03:31,358 INFO L178 Difference]: Start difference. First operand has 409 places, 313 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:03:31,362 INFO L206 Difference]: Finished difference. Result has 417 places, 312 transitions [2020-02-10 23:03:31,363 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=15122, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15270, PETRI_PLACES=417, PETRI_TRANSITIONS=312} [2020-02-10 23:03:31,363 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 417 places, 312 transitions [2020-02-10 23:03:37,749 INFO L129 PetriNetUnfolder]: 0/2843 cut-off events. [2020-02-10 23:03:37,750 INFO L130 PetriNetUnfolder]: For 408342/408456 co-relation queries the response was YES. [2020-02-10 23:03:37,812 INFO L76 FinitePrefix]: Finished finitePrefix Result has 34446 conditions, 2843 events. 0/2843 cut-off events. For 408342/408456 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 44103 event pairs. 3/2726 useless extension candidates. Maximal degree in co-relation 34242. Up to 321 conditions per place. [2020-02-10 23:03:37,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 417 places, 312 transitions [2020-02-10 23:03:37,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 416 places, 312 transitions [2020-02-10 23:03:37,899 INFO L479 AbstractCegarLoop]: Abstraction has has 416 places, 312 transitions [2020-02-10 23:03:37,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:03:40,015 INFO L129 PetriNetUnfolder]: 0/2535 cut-off events. [2020-02-10 23:03:40,016 INFO L130 PetriNetUnfolder]: For 408342/408456 co-relation queries the response was YES. [2020-02-10 23:03:40,016 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:40,016 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:40,016 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:03:40,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:40,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1015234046, now seen corresponding path program 36 times [2020-02-10 23:03:40,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:40,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521866613] [2020-02-10 23:03:40,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:40,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:40,254 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521866613] [2020-02-10 23:03:40,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:40,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:03:40,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877928346] [2020-02-10 23:03:40,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:03:40,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:40,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:03:40,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:03:40,256 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:03:40,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 312 transitions. Second operand 8 states. [2020-02-10 23:03:40,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:40,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:03:40,257 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:49,787 INFO L129 PetriNetUnfolder]: 90/3030 cut-off events. [2020-02-10 23:03:49,787 INFO L130 PetriNetUnfolder]: For 449894/450928 co-relation queries the response was YES. [2020-02-10 23:03:49,855 INFO L76 FinitePrefix]: Finished finitePrefix Result has 38014 conditions, 3030 events. 90/3030 cut-off events. For 449894/450928 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 45697 event pairs. 9/2987 useless extension candidates. Maximal degree in co-relation 37809. Up to 691 conditions per place. [2020-02-10 23:03:49,953 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 259 selfloop transitions, 93 changer transitions 5/369 dead transitions. [2020-02-10 23:03:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:03:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:03:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:03:49,954 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:03:49,954 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:03:49,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:03:49,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:49,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:03:49,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:03:49,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:03:49,956 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:03:49,956 INFO L178 Difference]: Start difference. First operand has 416 places, 312 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:03:49,962 INFO L206 Difference]: Finished difference. Result has 428 places, 326 transitions [2020-02-10 23:03:49,962 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=15270, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16358, PETRI_PLACES=428, PETRI_TRANSITIONS=326} [2020-02-10 23:03:49,962 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 428 places, 326 transitions [2020-02-10 23:03:54,825 INFO L129 PetriNetUnfolder]: 0/2835 cut-off events. [2020-02-10 23:03:54,825 INFO L130 PetriNetUnfolder]: For 431476/431594 co-relation queries the response was YES. [2020-02-10 23:03:54,891 INFO L76 FinitePrefix]: Finished finitePrefix Result has 35156 conditions, 2835 events. 0/2835 cut-off events. For 431476/431594 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 44002 event pairs. 5/2720 useless extension candidates. Maximal degree in co-relation 34946. Up to 320 conditions per place. [2020-02-10 23:03:54,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 428 places, 326 transitions [2020-02-10 23:03:54,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 427 places, 326 transitions [2020-02-10 23:03:54,983 INFO L479 AbstractCegarLoop]: Abstraction has has 427 places, 326 transitions [2020-02-10 23:03:54,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:03:56,973 INFO L129 PetriNetUnfolder]: 0/2528 cut-off events. [2020-02-10 23:03:56,973 INFO L130 PetriNetUnfolder]: For 432624/432765 co-relation queries the response was YES. [2020-02-10 23:03:56,973 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:56,973 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:56,974 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:03:56,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:56,974 INFO L82 PathProgramCache]: Analyzing trace with hash -128867478, now seen corresponding path program 37 times [2020-02-10 23:03:56,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:56,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847534361] [2020-02-10 23:03:56,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:57,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847534361] [2020-02-10 23:03:57,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:57,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:03:57,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633890528] [2020-02-10 23:03:57,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:03:57,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:57,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:03:57,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:03:57,209 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:03:57,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 326 transitions. Second operand 8 states. [2020-02-10 23:03:57,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:57,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:03:57,210 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:06,030 INFO L129 PetriNetUnfolder]: 90/3024 cut-off events. [2020-02-10 23:04:06,030 INFO L130 PetriNetUnfolder]: For 475506/476434 co-relation queries the response was YES. [2020-02-10 23:04:06,100 INFO L76 FinitePrefix]: Finished finitePrefix Result has 38807 conditions, 3024 events. 90/3024 cut-off events. For 475506/476434 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 45564 event pairs. 3/2972 useless extension candidates. Maximal degree in co-relation 38596. Up to 599 conditions per place. [2020-02-10 23:04:06,198 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 228 selfloop transitions, 102 changer transitions 2/344 dead transitions. [2020-02-10 23:04:06,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:04:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:04:06,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:04:06,200 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:04:06,200 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:04:06,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:04:06,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:06,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:04:06,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:04:06,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:04:06,201 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:04:06,202 INFO L178 Difference]: Start difference. First operand has 427 places, 326 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:04:06,207 INFO L206 Difference]: Finished difference. Result has 436 places, 326 transitions [2020-02-10 23:04:06,208 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16358, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16547, PETRI_PLACES=436, PETRI_TRANSITIONS=326} [2020-02-10 23:04:06,208 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 436 places, 326 transitions [2020-02-10 23:04:11,781 INFO L129 PetriNetUnfolder]: 0/2829 cut-off events. [2020-02-10 23:04:11,782 INFO L130 PetriNetUnfolder]: For 449862/450003 co-relation queries the response was YES. [2020-02-10 23:04:11,847 INFO L76 FinitePrefix]: Finished finitePrefix Result has 35703 conditions, 2829 events. 0/2829 cut-off events. For 449862/450003 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 43813 event pairs. 9/2713 useless extension candidates. Maximal degree in co-relation 35490. Up to 319 conditions per place. [2020-02-10 23:04:11,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 326 transitions [2020-02-10 23:04:11,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 435 places, 326 transitions [2020-02-10 23:04:11,938 INFO L479 AbstractCegarLoop]: Abstraction has has 435 places, 326 transitions [2020-02-10 23:04:11,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:04:14,153 INFO L129 PetriNetUnfolder]: 0/2523 cut-off events. [2020-02-10 23:04:14,153 INFO L130 PetriNetUnfolder]: For 448611/448718 co-relation queries the response was YES. [2020-02-10 23:04:14,153 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:14,153 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:14,153 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:04:14,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:14,154 INFO L82 PathProgramCache]: Analyzing trace with hash 921807188, now seen corresponding path program 38 times [2020-02-10 23:04:14,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:14,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598341892] [2020-02-10 23:04:14,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:14,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:14,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598341892] [2020-02-10 23:04:14,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:14,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:04:14,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032352800] [2020-02-10 23:04:14,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:04:14,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:14,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:04:14,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:04:14,385 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:04:14,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 326 transitions. Second operand 8 states. [2020-02-10 23:04:14,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:14,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:04:14,386 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:25,028 INFO L129 PetriNetUnfolder]: 68/3278 cut-off events. [2020-02-10 23:04:25,028 INFO L130 PetriNetUnfolder]: For 531355/532273 co-relation queries the response was YES. [2020-02-10 23:04:25,104 INFO L76 FinitePrefix]: Finished finitePrefix Result has 42129 conditions, 3278 events. 68/3278 cut-off events. For 531355/532273 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 50711 event pairs. 13/3236 useless extension candidates. Maximal degree in co-relation 41915. Up to 571 conditions per place. [2020-02-10 23:04:25,214 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 251 selfloop transitions, 113 changer transitions 1/377 dead transitions. [2020-02-10 23:04:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:04:25,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:04:25,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:04:25,215 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:04:25,216 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:04:25,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:04:25,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:25,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:04:25,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:04:25,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:04:25,217 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:04:25,217 INFO L178 Difference]: Start difference. First operand has 435 places, 326 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:04:25,222 INFO L206 Difference]: Finished difference. Result has 447 places, 350 transitions [2020-02-10 23:04:25,222 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16547, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18272, PETRI_PLACES=447, PETRI_TRANSITIONS=350} [2020-02-10 23:04:25,222 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 447 places, 350 transitions [2020-02-10 23:04:32,686 INFO L129 PetriNetUnfolder]: 0/3123 cut-off events. [2020-02-10 23:04:32,686 INFO L130 PetriNetUnfolder]: For 517228/517313 co-relation queries the response was YES. [2020-02-10 23:04:32,765 INFO L76 FinitePrefix]: Finished finitePrefix Result has 40064 conditions, 3123 events. 0/3123 cut-off events. For 517228/517313 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 49388 event pairs. 6/3003 useless extension candidates. Maximal degree in co-relation 39845. Up to 351 conditions per place. [2020-02-10 23:04:32,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 447 places, 350 transitions [2020-02-10 23:04:32,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 447 places, 350 transitions [2020-02-10 23:04:32,871 INFO L479 AbstractCegarLoop]: Abstraction has has 447 places, 350 transitions [2020-02-10 23:04:32,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:04:35,527 INFO L129 PetriNetUnfolder]: 0/2786 cut-off events. [2020-02-10 23:04:35,527 INFO L130 PetriNetUnfolder]: For 518402/518496 co-relation queries the response was YES. [2020-02-10 23:04:35,527 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:35,528 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:35,528 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:04:35,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:35,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1611095776, now seen corresponding path program 39 times [2020-02-10 23:04:35,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:35,528 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140372711] [2020-02-10 23:04:35,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:35,784 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140372711] [2020-02-10 23:04:35,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:35,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:04:35,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117552277] [2020-02-10 23:04:35,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:04:35,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:35,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:04:35,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:04:35,787 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:04:35,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 350 transitions. Second operand 8 states. [2020-02-10 23:04:35,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:35,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:04:35,788 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:46,154 INFO L129 PetriNetUnfolder]: 68/3263 cut-off events. [2020-02-10 23:04:46,154 INFO L130 PetriNetUnfolder]: For 557234/557840 co-relation queries the response was YES. [2020-02-10 23:04:46,234 INFO L76 FinitePrefix]: Finished finitePrefix Result has 42991 conditions, 3263 events. 68/3263 cut-off events. For 557234/557840 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 50369 event pairs. 7/3219 useless extension candidates. Maximal degree in co-relation 42771. Up to 680 conditions per place. [2020-02-10 23:04:46,346 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 266 selfloop transitions, 122 changer transitions 4/404 dead transitions. [2020-02-10 23:04:46,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:04:46,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:04:46,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:04:46,347 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:04:46,347 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:04:46,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:04:46,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:46,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:04:46,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:04:46,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:04:46,348 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:04:46,348 INFO L178 Difference]: Start difference. First operand has 447 places, 350 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:04:46,353 INFO L206 Difference]: Finished difference. Result has 455 places, 349 transitions [2020-02-10 23:04:46,354 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18272, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18488, PETRI_PLACES=455, PETRI_TRANSITIONS=349} [2020-02-10 23:04:46,354 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 455 places, 349 transitions [2020-02-10 23:04:53,842 INFO L129 PetriNetUnfolder]: 0/3115 cut-off events. [2020-02-10 23:04:53,842 INFO L130 PetriNetUnfolder]: For 537662/537754 co-relation queries the response was YES. [2020-02-10 23:04:53,913 INFO L76 FinitePrefix]: Finished finitePrefix Result has 40690 conditions, 3115 events. 0/3115 cut-off events. For 537662/537754 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 49197 event pairs. 6/2999 useless extension candidates. Maximal degree in co-relation 40469. Up to 350 conditions per place. [2020-02-10 23:04:53,914 INFO L82 GeneralOperation]: Start removeDead. Operand has 455 places, 349 transitions [2020-02-10 23:04:54,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 454 places, 349 transitions [2020-02-10 23:04:54,013 INFO L479 AbstractCegarLoop]: Abstraction has has 454 places, 349 transitions [2020-02-10 23:04:54,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:04:56,796 INFO L129 PetriNetUnfolder]: 0/2779 cut-off events. [2020-02-10 23:04:56,797 INFO L130 PetriNetUnfolder]: For 536484/536588 co-relation queries the response was YES. [2020-02-10 23:04:56,797 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:56,797 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:56,797 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:04:56,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:56,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1415424898, now seen corresponding path program 40 times [2020-02-10 23:04:56,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:56,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912063370] [2020-02-10 23:04:56,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:57,021 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912063370] [2020-02-10 23:04:57,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:57,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:04:57,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7051640] [2020-02-10 23:04:57,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:04:57,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:57,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:04:57,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:04:57,022 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:04:57,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 349 transitions. Second operand 8 states. [2020-02-10 23:04:57,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:57,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:04:57,023 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:08,186 INFO L129 PetriNetUnfolder]: 68/3258 cut-off events. [2020-02-10 23:05:08,187 INFO L130 PetriNetUnfolder]: For 577943/578576 co-relation queries the response was YES. [2020-02-10 23:05:08,267 INFO L76 FinitePrefix]: Finished finitePrefix Result has 43657 conditions, 3258 events. 68/3258 cut-off events. For 577943/578576 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 50321 event pairs. 11/3222 useless extension candidates. Maximal degree in co-relation 43435. Up to 800 conditions per place. [2020-02-10 23:05:08,382 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 256 selfloop transitions, 123 changer transitions 5/396 dead transitions. [2020-02-10 23:05:08,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:05:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:05:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:05:08,383 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:05:08,383 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:05:08,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:05:08,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:08,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:05:08,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:05:08,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:05:08,385 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:05:08,385 INFO L178 Difference]: Start difference. First operand has 454 places, 349 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:05:08,391 INFO L206 Difference]: Finished difference. Result has 465 places, 360 transitions [2020-02-10 23:05:08,391 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18488, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19308, PETRI_PLACES=465, PETRI_TRANSITIONS=360} [2020-02-10 23:05:08,391 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 465 places, 360 transitions [2020-02-10 23:05:15,815 INFO L129 PetriNetUnfolder]: 0/3104 cut-off events. [2020-02-10 23:05:15,816 INFO L130 PetriNetUnfolder]: For 561974/562082 co-relation queries the response was YES. [2020-02-10 23:05:15,892 INFO L76 FinitePrefix]: Finished finitePrefix Result has 41413 conditions, 3104 events. 0/3104 cut-off events. For 561974/562082 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 48871 event pairs. 2/2986 useless extension candidates. Maximal degree in co-relation 41187. Up to 349 conditions per place. [2020-02-10 23:05:15,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 465 places, 360 transitions [2020-02-10 23:05:15,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 464 places, 360 transitions [2020-02-10 23:05:15,997 INFO L479 AbstractCegarLoop]: Abstraction has has 464 places, 360 transitions [2020-02-10 23:05:15,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:05:18,705 INFO L129 PetriNetUnfolder]: 0/2769 cut-off events. [2020-02-10 23:05:18,706 INFO L130 PetriNetUnfolder]: For 563719/563822 co-relation queries the response was YES. [2020-02-10 23:05:18,706 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:05:18,706 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:05:18,706 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:05:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:05:18,706 INFO L82 PathProgramCache]: Analyzing trace with hash -574828414, now seen corresponding path program 41 times [2020-02-10 23:05:18,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:05:18,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194499395] [2020-02-10 23:05:18,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:05:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:05:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:05:18,911 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194499395] [2020-02-10 23:05:18,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:05:18,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:05:18,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059362364] [2020-02-10 23:05:18,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:05:18,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:05:18,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:05:18,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:05:18,912 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:05:18,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 360 transitions. Second operand 8 states. [2020-02-10 23:05:18,913 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:05:18,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:05:18,913 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:30,545 INFO L129 PetriNetUnfolder]: 68/3246 cut-off events. [2020-02-10 23:05:30,546 INFO L130 PetriNetUnfolder]: For 604439/604973 co-relation queries the response was YES. [2020-02-10 23:05:30,626 INFO L76 FinitePrefix]: Finished finitePrefix Result has 44395 conditions, 3246 events. 68/3246 cut-off events. For 604439/604973 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 50038 event pairs. 1/3198 useless extension candidates. Maximal degree in co-relation 44168. Up to 683 conditions per place. [2020-02-10 23:05:30,742 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 266 selfloop transitions, 132 changer transitions 0/410 dead transitions. [2020-02-10 23:05:30,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:05:30,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:05:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:05:30,743 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:05:30,743 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:05:30,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:05:30,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:30,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:05:30,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:05:30,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:05:30,745 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:05:30,745 INFO L178 Difference]: Start difference. First operand has 464 places, 360 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:05:30,751 INFO L206 Difference]: Finished difference. Result has 475 places, 367 transitions [2020-02-10 23:05:30,751 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=19308, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19885, PETRI_PLACES=475, PETRI_TRANSITIONS=367} [2020-02-10 23:05:30,752 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 475 places, 367 transitions [2020-02-10 23:05:37,575 INFO L129 PetriNetUnfolder]: 0/3103 cut-off events. [2020-02-10 23:05:37,575 INFO L130 PetriNetUnfolder]: For 586383/586485 co-relation queries the response was YES. [2020-02-10 23:05:37,654 INFO L76 FinitePrefix]: Finished finitePrefix Result has 42148 conditions, 3103 events. 0/3103 cut-off events. For 586383/586485 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 49010 event pairs. 7/2990 useless extension candidates. Maximal degree in co-relation 41917. Up to 349 conditions per place. [2020-02-10 23:05:37,654 INFO L82 GeneralOperation]: Start removeDead. Operand has 475 places, 367 transitions [2020-02-10 23:05:37,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 475 places, 367 transitions [2020-02-10 23:05:37,921 INFO L479 AbstractCegarLoop]: Abstraction has has 475 places, 367 transitions [2020-02-10 23:05:37,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:05:40,789 INFO L129 PetriNetUnfolder]: 0/2769 cut-off events. [2020-02-10 23:05:40,789 INFO L130 PetriNetUnfolder]: For 585123/585219 co-relation queries the response was YES. [2020-02-10 23:05:40,789 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:05:40,789 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:05:40,789 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:05:40,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:05:40,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1439545282, now seen corresponding path program 42 times [2020-02-10 23:05:40,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:05:40,790 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409310660] [2020-02-10 23:05:40,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:05:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:05:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:05:41,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409310660] [2020-02-10 23:05:41,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:05:41,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:05:41,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733789980] [2020-02-10 23:05:41,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:05:41,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:05:41,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:05:41,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:05:41,013 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:05:41,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 367 transitions. Second operand 8 states. [2020-02-10 23:05:41,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:05:41,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:05:41,014 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:52,233 INFO L129 PetriNetUnfolder]: 68/3249 cut-off events. [2020-02-10 23:05:52,233 INFO L130 PetriNetUnfolder]: For 628690/629224 co-relation queries the response was YES. [2020-02-10 23:05:52,317 INFO L76 FinitePrefix]: Finished finitePrefix Result has 45184 conditions, 3249 events. 68/3249 cut-off events. For 628690/629224 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 50113 event pairs. 1/3202 useless extension candidates. Maximal degree in co-relation 44952. Up to 641 conditions per place. [2020-02-10 23:05:52,436 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 261 selfloop transitions, 109 changer transitions 1/383 dead transitions. [2020-02-10 23:05:52,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:05:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:05:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:05:52,438 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:05:52,438 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:05:52,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:05:52,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:52,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:05:52,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:05:52,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:05:52,440 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:05:52,440 INFO L178 Difference]: Start difference. First operand has 475 places, 367 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:05:52,447 INFO L206 Difference]: Finished difference. Result has 483 places, 366 transitions [2020-02-10 23:05:52,448 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=19885, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=20061, PETRI_PLACES=483, PETRI_TRANSITIONS=366} [2020-02-10 23:05:52,448 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 483 places, 366 transitions [2020-02-10 23:06:00,399 INFO L129 PetriNetUnfolder]: 0/3095 cut-off events. [2020-02-10 23:06:00,399 INFO L130 PetriNetUnfolder]: For 606582/606679 co-relation queries the response was YES. [2020-02-10 23:06:00,476 INFO L76 FinitePrefix]: Finished finitePrefix Result has 42754 conditions, 3095 events. 0/3095 cut-off events. For 606582/606679 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 48845 event pairs. 5/2980 useless extension candidates. Maximal degree in co-relation 42521. Up to 348 conditions per place. [2020-02-10 23:06:00,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 483 places, 366 transitions [2020-02-10 23:06:00,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 482 places, 366 transitions [2020-02-10 23:06:00,586 INFO L479 AbstractCegarLoop]: Abstraction has has 482 places, 366 transitions [2020-02-10 23:06:00,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:06:03,311 INFO L129 PetriNetUnfolder]: 0/2762 cut-off events. [2020-02-10 23:06:03,312 INFO L130 PetriNetUnfolder]: For 606582/606679 co-relation queries the response was YES. [2020-02-10 23:06:03,312 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:03,312 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:03,312 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:06:03,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:03,312 INFO L82 PathProgramCache]: Analyzing trace with hash -344362794, now seen corresponding path program 43 times [2020-02-10 23:06:03,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:03,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287406695] [2020-02-10 23:06:03,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:03,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:06:03,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287406695] [2020-02-10 23:06:03,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:03,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:06:03,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048367605] [2020-02-10 23:06:03,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:06:03,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:03,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:06:03,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:06:03,535 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:06:03,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 366 transitions. Second operand 8 states. [2020-02-10 23:06:03,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:03,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:06:03,536 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:06:16,276 INFO L129 PetriNetUnfolder]: 59/3386 cut-off events. [2020-02-10 23:06:16,276 INFO L130 PetriNetUnfolder]: For 684732/685260 co-relation queries the response was YES. [2020-02-10 23:06:16,367 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47831 conditions, 3386 events. 59/3386 cut-off events. For 684732/685260 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 52867 event pairs. 5/3342 useless extension candidates. Maximal degree in co-relation 47597. Up to 573 conditions per place. [2020-02-10 23:06:16,499 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 271 selfloop transitions, 129 changer transitions 0/412 dead transitions. [2020-02-10 23:06:16,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:06:16,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:06:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:06:16,500 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:06:16,500 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:06:16,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:06:16,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:06:16,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:06:16,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:06:16,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:06:16,501 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:06:16,501 INFO L178 Difference]: Start difference. First operand has 482 places, 366 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:06:16,507 INFO L206 Difference]: Finished difference. Result has 494 places, 386 transitions [2020-02-10 23:06:16,507 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=20061, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21492, PETRI_PLACES=494, PETRI_TRANSITIONS=386} [2020-02-10 23:06:16,508 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 494 places, 386 transitions [2020-02-10 23:06:26,061 INFO L129 PetriNetUnfolder]: 0/3249 cut-off events. [2020-02-10 23:06:26,061 INFO L130 PetriNetUnfolder]: For 671559/671636 co-relation queries the response was YES. [2020-02-10 23:06:26,151 INFO L76 FinitePrefix]: Finished finitePrefix Result has 45889 conditions, 3249 events. 0/3249 cut-off events. For 671559/671636 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 51721 event pairs. 3/3136 useless extension candidates. Maximal degree in co-relation 45650. Up to 366 conditions per place. [2020-02-10 23:06:26,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 494 places, 386 transitions [2020-02-10 23:06:26,276 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 494 places, 386 transitions [2020-02-10 23:06:26,276 INFO L479 AbstractCegarLoop]: Abstraction has has 494 places, 386 transitions [2020-02-10 23:06:26,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:06:29,253 INFO L129 PetriNetUnfolder]: 0/2899 cut-off events. [2020-02-10 23:06:29,253 INFO L130 PetriNetUnfolder]: For 671559/671636 co-relation queries the response was YES. [2020-02-10 23:06:29,253 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:29,253 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:29,253 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:06:29,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:29,254 INFO L82 PathProgramCache]: Analyzing trace with hash -9150522, now seen corresponding path program 44 times [2020-02-10 23:06:29,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:29,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505585450] [2020-02-10 23:06:29,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:29,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:06:29,477 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505585450] [2020-02-10 23:06:29,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:29,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:06:29,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465825297] [2020-02-10 23:06:29,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:06:29,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:29,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:06:29,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:06:29,479 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:06:29,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 386 transitions. Second operand 8 states. [2020-02-10 23:06:29,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:29,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:06:29,479 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:06:43,469 INFO L129 PetriNetUnfolder]: 58/3387 cut-off events. [2020-02-10 23:06:43,469 INFO L130 PetriNetUnfolder]: For 718682/719314 co-relation queries the response was YES. [2020-02-10 23:06:43,565 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48944 conditions, 3387 events. 58/3387 cut-off events. For 718682/719314 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 52929 event pairs. 9/3341 useless extension candidates. Maximal degree in co-relation 48704. Up to 705 conditions per place. [2020-02-10 23:06:43,701 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 288 selfloop transitions, 132 changer transitions 3/435 dead transitions. [2020-02-10 23:06:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:06:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:06:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:06:43,702 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:06:43,702 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:06:43,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:06:43,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:06:43,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:06:43,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:06:43,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:06:43,703 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:06:43,704 INFO L178 Difference]: Start difference. First operand has 494 places, 386 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:06:43,710 INFO L206 Difference]: Finished difference. Result has 505 places, 391 transitions [2020-02-10 23:06:43,711 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=21492, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22049, PETRI_PLACES=505, PETRI_TRANSITIONS=391} [2020-02-10 23:06:43,711 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 505 places, 391 transitions [2020-02-10 23:06:52,172 INFO L129 PetriNetUnfolder]: 0/3258 cut-off events. [2020-02-10 23:06:52,172 INFO L130 PetriNetUnfolder]: For 701093/701166 co-relation queries the response was YES. [2020-02-10 23:06:52,260 INFO L76 FinitePrefix]: Finished finitePrefix Result has 46845 conditions, 3258 events. 0/3258 cut-off events. For 701093/701166 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 51826 event pairs. 3/3136 useless extension candidates. Maximal degree in co-relation 46601. Up to 367 conditions per place. [2020-02-10 23:06:52,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 505 places, 391 transitions [2020-02-10 23:06:52,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 504 places, 391 transitions [2020-02-10 23:06:52,382 INFO L479 AbstractCegarLoop]: Abstraction has has 504 places, 391 transitions [2020-02-10 23:06:52,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:06:55,479 INFO L129 PetriNetUnfolder]: 0/2907 cut-off events. [2020-02-10 23:06:55,479 INFO L130 PetriNetUnfolder]: For 701147/701229 co-relation queries the response was YES. [2020-02-10 23:06:55,479 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:55,480 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:55,480 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:06:55,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:55,480 INFO L82 PathProgramCache]: Analyzing trace with hash -590654096, now seen corresponding path program 45 times [2020-02-10 23:06:55,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:55,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291482449] [2020-02-10 23:06:55,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:06:55,772 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291482449] [2020-02-10 23:06:55,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:55,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:06:55,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283988719] [2020-02-10 23:06:55,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:06:55,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:55,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:06:55,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:06:55,774 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:06:55,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 391 transitions. Second operand 8 states. [2020-02-10 23:06:55,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:55,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:06:55,775 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:08,822 INFO L129 PetriNetUnfolder]: 58/3393 cut-off events. [2020-02-10 23:07:08,822 INFO L130 PetriNetUnfolder]: For 746954/747452 co-relation queries the response was YES. [2020-02-10 23:07:08,917 INFO L76 FinitePrefix]: Finished finitePrefix Result has 49759 conditions, 3393 events. 58/3393 cut-off events. For 746954/747452 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 52984 event pairs. 5/3347 useless extension candidates. Maximal degree in co-relation 49514. Up to 576 conditions per place. [2020-02-10 23:07:10,129 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 279 selfloop transitions, 132 changer transitions 0/423 dead transitions. [2020-02-10 23:07:10,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:07:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:07:10,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:07:10,130 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:07:10,130 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:07:10,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:07:10,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:10,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:07:10,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:07:10,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:07:10,132 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:07:10,132 INFO L178 Difference]: Start difference. First operand has 504 places, 391 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:07:10,141 INFO L206 Difference]: Finished difference. Result has 513 places, 405 transitions [2020-02-10 23:07:10,142 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=22049, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=23089, PETRI_PLACES=513, PETRI_TRANSITIONS=405} [2020-02-10 23:07:10,142 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 513 places, 405 transitions [2020-02-10 23:07:18,347 INFO L129 PetriNetUnfolder]: 0/3257 cut-off events. [2020-02-10 23:07:18,347 INFO L130 PetriNetUnfolder]: For 727223/727305 co-relation queries the response was YES. [2020-02-10 23:07:18,439 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47572 conditions, 3257 events. 0/3257 cut-off events. For 727223/727305 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 51767 event pairs. 2/3132 useless extension candidates. Maximal degree in co-relation 47325. Up to 367 conditions per place. [2020-02-10 23:07:18,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 513 places, 405 transitions [2020-02-10 23:07:18,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 513 places, 405 transitions [2020-02-10 23:07:18,563 INFO L479 AbstractCegarLoop]: Abstraction has has 513 places, 405 transitions [2020-02-10 23:07:18,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:07:22,031 INFO L129 PetriNetUnfolder]: 0/2907 cut-off events. [2020-02-10 23:07:22,031 INFO L130 PetriNetUnfolder]: For 727566/727723 co-relation queries the response was YES. [2020-02-10 23:07:22,031 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:22,032 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:07:22,032 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:07:22,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:22,032 INFO L82 PathProgramCache]: Analyzing trace with hash -314011066, now seen corresponding path program 46 times [2020-02-10 23:07:22,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:22,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236775546] [2020-02-10 23:07:22,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:07:22,253 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236775546] [2020-02-10 23:07:22,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:22,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:07:22,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172010827] [2020-02-10 23:07:22,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:07:22,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:22,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:07:22,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:07:22,254 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:07:22,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 405 transitions. Second operand 8 states. [2020-02-10 23:07:22,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:22,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:07:22,255 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:36,269 INFO L129 PetriNetUnfolder]: 58/3381 cut-off events. [2020-02-10 23:07:36,270 INFO L130 PetriNetUnfolder]: For 773202/774201 co-relation queries the response was YES. [2020-02-10 23:07:36,366 INFO L76 FinitePrefix]: Finished finitePrefix Result has 50462 conditions, 3381 events. 58/3381 cut-off events. For 773202/774201 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 52778 event pairs. 17/3342 useless extension candidates. Maximal degree in co-relation 50214. Up to 852 conditions per place. [2020-02-10 23:07:36,504 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 325 selfloop transitions, 89 changer transitions 3/429 dead transitions. [2020-02-10 23:07:36,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:07:36,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:07:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:07:36,506 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:07:36,506 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:07:36,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:07:36,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:36,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:07:36,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:07:36,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:07:36,508 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:07:36,508 INFO L178 Difference]: Start difference. First operand has 513 places, 405 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:07:36,515 INFO L206 Difference]: Finished difference. Result has 523 places, 407 transitions [2020-02-10 23:07:36,515 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=23089, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=23362, PETRI_PLACES=523, PETRI_TRANSITIONS=407} [2020-02-10 23:07:36,515 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 523 places, 407 transitions [2020-02-10 23:07:45,271 INFO L129 PetriNetUnfolder]: 0/3251 cut-off events. [2020-02-10 23:07:45,272 INFO L130 PetriNetUnfolder]: For 750812/750967 co-relation queries the response was YES. [2020-02-10 23:07:45,363 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48166 conditions, 3251 events. 0/3251 cut-off events. For 750812/750967 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 51545 event pairs. 1/3119 useless extension candidates. Maximal degree in co-relation 47915. Up to 366 conditions per place. [2020-02-10 23:07:45,364 INFO L82 GeneralOperation]: Start removeDead. Operand has 523 places, 407 transitions [2020-02-10 23:07:45,490 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 522 places, 407 transitions [2020-02-10 23:07:45,490 INFO L479 AbstractCegarLoop]: Abstraction has has 522 places, 407 transitions [2020-02-10 23:07:45,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:07:48,874 INFO L129 PetriNetUnfolder]: 0/2902 cut-off events. [2020-02-10 23:07:48,874 INFO L130 PetriNetUnfolder]: For 750758/750890 co-relation queries the response was YES. [2020-02-10 23:07:48,874 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:48,875 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:07:48,875 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:07:48,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:48,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1912850298, now seen corresponding path program 47 times [2020-02-10 23:07:48,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:48,875 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416417832] [2020-02-10 23:07:48,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:07:49,108 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416417832] [2020-02-10 23:07:49,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:49,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:07:49,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404604774] [2020-02-10 23:07:49,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:07:49,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:49,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:07:49,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:07:49,109 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:07:49,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 407 transitions. Second operand 8 states. [2020-02-10 23:07:49,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:49,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:07:49,110 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:08:06,385 INFO L129 PetriNetUnfolder]: 48/3529 cut-off events. [2020-02-10 23:08:06,385 INFO L130 PetriNetUnfolder]: For 843299/844132 co-relation queries the response was YES. [2020-02-10 23:08:06,489 INFO L76 FinitePrefix]: Finished finitePrefix Result has 53355 conditions, 3529 events. 48/3529 cut-off events. For 843299/844132 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 55669 event pairs. 1/3472 useless extension candidates. Maximal degree in co-relation 53103. Up to 672 conditions per place. [2020-02-10 23:08:06,640 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 274 selfloop transitions, 163 changer transitions 1/450 dead transitions. [2020-02-10 23:08:06,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:08:06,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:08:06,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:08:06,642 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:08:06,642 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:08:06,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:08:06,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:08:06,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:08:06,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:08:06,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:08:06,644 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:08:06,644 INFO L178 Difference]: Start difference. First operand has 522 places, 407 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:08:06,652 INFO L206 Difference]: Finished difference. Result has 534 places, 423 transitions [2020-02-10 23:08:06,653 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=23362, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=24719, PETRI_PLACES=534, PETRI_TRANSITIONS=423} [2020-02-10 23:08:06,653 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 534 places, 423 transitions [2020-02-10 23:08:15,729 INFO L129 PetriNetUnfolder]: 0/3421 cut-off events. [2020-02-10 23:08:15,730 INFO L130 PetriNetUnfolder]: For 833270/833380 co-relation queries the response was YES. [2020-02-10 23:08:15,828 INFO L76 FinitePrefix]: Finished finitePrefix Result has 51589 conditions, 3421 events. 0/3421 cut-off events. For 833270/833380 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 54844 event pairs. 1/3295 useless extension candidates. Maximal degree in co-relation 51332. Up to 384 conditions per place. [2020-02-10 23:08:15,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 534 places, 423 transitions [2020-02-10 23:08:15,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 533 places, 423 transitions [2020-02-10 23:08:15,965 INFO L479 AbstractCegarLoop]: Abstraction has has 533 places, 423 transitions [2020-02-10 23:08:15,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:08:19,700 INFO L129 PetriNetUnfolder]: 0/3054 cut-off events. [2020-02-10 23:08:19,700 INFO L130 PetriNetUnfolder]: For 832762/832870 co-relation queries the response was YES. [2020-02-10 23:08:19,700 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:08:19,700 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:08:19,701 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:08:19,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:08:19,701 INFO L82 PathProgramCache]: Analyzing trace with hash 496734910, now seen corresponding path program 48 times [2020-02-10 23:08:19,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:08:19,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302611966] [2020-02-10 23:08:19,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:08:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:08:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:08:19,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302611966] [2020-02-10 23:08:19,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:08:19,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:08:19,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621272749] [2020-02-10 23:08:19,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:08:19,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:08:19,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:08:19,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:08:19,951 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:08:19,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 423 transitions. Second operand 8 states. [2020-02-10 23:08:19,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:08:19,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:08:19,951 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:08:37,521 INFO L129 PetriNetUnfolder]: 48/3524 cut-off events. [2020-02-10 23:08:37,521 INFO L130 PetriNetUnfolder]: For 879988/881434 co-relation queries the response was YES. [2020-02-10 23:08:37,631 INFO L76 FinitePrefix]: Finished finitePrefix Result has 54273 conditions, 3524 events. 48/3524 cut-off events. For 879988/881434 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 55634 event pairs. 13/3477 useless extension candidates. Maximal degree in co-relation 54015. Up to 859 conditions per place. [2020-02-10 23:08:37,785 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 317 selfloop transitions, 116 changer transitions 0/445 dead transitions. [2020-02-10 23:08:37,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:08:37,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:08:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:08:37,786 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:08:37,786 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:08:37,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:08:37,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:08:37,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:08:37,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:08:37,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:08:37,788 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:08:37,788 INFO L178 Difference]: Start difference. First operand has 533 places, 423 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:08:37,797 INFO L206 Difference]: Finished difference. Result has 544 places, 436 transitions [2020-02-10 23:08:37,798 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=24719, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=25977, PETRI_PLACES=544, PETRI_TRANSITIONS=436} [2020-02-10 23:08:37,798 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 544 places, 436 transitions [2020-02-10 23:08:47,750 INFO L129 PetriNetUnfolder]: 0/3420 cut-off events. [2020-02-10 23:08:47,750 INFO L130 PetriNetUnfolder]: For 865330/865438 co-relation queries the response was YES. [2020-02-10 23:08:47,855 INFO L76 FinitePrefix]: Finished finitePrefix Result has 52394 conditions, 3420 events. 0/3420 cut-off events. For 865330/865438 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 54771 event pairs. 1/3291 useless extension candidates. Maximal degree in co-relation 52132. Up to 384 conditions per place. [2020-02-10 23:08:47,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 544 places, 436 transitions [2020-02-10 23:08:47,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 544 places, 436 transitions [2020-02-10 23:08:47,992 INFO L479 AbstractCegarLoop]: Abstraction has has 544 places, 436 transitions [2020-02-10 23:08:47,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:08:52,133 INFO L129 PetriNetUnfolder]: 0/3054 cut-off events. [2020-02-10 23:08:52,133 INFO L130 PetriNetUnfolder]: For 865330/865438 co-relation queries the response was YES. [2020-02-10 23:08:52,134 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:08:52,134 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:08:52,134 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:08:52,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:08:52,134 INFO L82 PathProgramCache]: Analyzing trace with hash -915637608, now seen corresponding path program 49 times [2020-02-10 23:08:52,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:08:52,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343314115] [2020-02-10 23:08:52,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:08:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:08:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:08:52,333 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343314115] [2020-02-10 23:08:52,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:08:52,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:08:52,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734411991] [2020-02-10 23:08:52,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:08:52,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:08:52,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:08:52,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:08:52,334 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:08:52,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 436 transitions. Second operand 8 states. [2020-02-10 23:08:52,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:08:52,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:08:52,335 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:09:10,003 INFO L129 PetriNetUnfolder]: 46/3550 cut-off events. [2020-02-10 23:09:10,003 INFO L130 PetriNetUnfolder]: For 922209/923655 co-relation queries the response was YES. [2020-02-10 23:09:10,112 INFO L76 FinitePrefix]: Finished finitePrefix Result has 55451 conditions, 3550 events. 46/3550 cut-off events. For 922209/923655 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 56145 event pairs. 24/3516 useless extension candidates. Maximal degree in co-relation 55188. Up to 610 conditions per place. [2020-02-10 23:09:10,266 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 301 selfloop transitions, 146 changer transitions 0/459 dead transitions. [2020-02-10 23:09:10,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:09:10,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:09:10,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:09:10,267 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:09:10,267 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:09:10,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:09:10,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:09:10,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:09:10,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:09:10,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:09:10,268 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:09:10,268 INFO L178 Difference]: Start difference. First operand has 544 places, 436 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:09:10,276 INFO L206 Difference]: Finished difference. Result has 556 places, 447 transitions [2020-02-10 23:09:10,276 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=25977, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27022, PETRI_PLACES=556, PETRI_TRANSITIONS=447} [2020-02-10 23:09:10,277 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 556 places, 447 transitions [2020-02-10 23:09:21,447 INFO L129 PetriNetUnfolder]: 0/3447 cut-off events. [2020-02-10 23:09:21,447 INFO L130 PetriNetUnfolder]: For 911893/912020 co-relation queries the response was YES. [2020-02-10 23:09:21,552 INFO L76 FinitePrefix]: Finished finitePrefix Result has 53693 conditions, 3447 events. 0/3447 cut-off events. For 911893/912020 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 55335 event pairs. 1/3319 useless extension candidates. Maximal degree in co-relation 53425. Up to 387 conditions per place. [2020-02-10 23:09:21,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 556 places, 447 transitions [2020-02-10 23:09:21,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 556 places, 447 transitions [2020-02-10 23:09:21,702 INFO L479 AbstractCegarLoop]: Abstraction has has 556 places, 447 transitions [2020-02-10 23:09:21,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:09:25,540 INFO L129 PetriNetUnfolder]: 0/3079 cut-off events. [2020-02-10 23:09:25,541 INFO L130 PetriNetUnfolder]: For 911728/911827 co-relation queries the response was YES. [2020-02-10 23:09:25,541 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:09:25,541 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:09:25,541 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:09:25,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:09:25,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1770843984, now seen corresponding path program 50 times [2020-02-10 23:09:25,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:09:25,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985537252] [2020-02-10 23:09:25,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:09:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:09:25,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:09:25,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985537252] [2020-02-10 23:09:25,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:09:25,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:09:25,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827393810] [2020-02-10 23:09:25,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:09:25,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:09:25,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:09:25,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:09:25,770 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:09:25,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 447 transitions. Second operand 8 states. [2020-02-10 23:09:25,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:09:25,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:09:25,771 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:09:44,494 INFO L129 PetriNetUnfolder]: 46/3549 cut-off events. [2020-02-10 23:09:44,494 INFO L130 PetriNetUnfolder]: For 959105/959989 co-relation queries the response was YES. [2020-02-10 23:09:44,624 INFO L76 FinitePrefix]: Finished finitePrefix Result has 56339 conditions, 3549 events. 46/3549 cut-off events. For 959105/959989 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 56055 event pairs. 10/3507 useless extension candidates. Maximal degree in co-relation 56070. Up to 621 conditions per place. [2020-02-10 23:09:44,782 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 307 selfloop transitions, 146 changer transitions 0/465 dead transitions. [2020-02-10 23:09:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:09:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:09:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:09:44,783 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:09:44,783 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:09:44,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:09:44,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:09:44,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:09:44,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:09:44,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:09:44,784 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:09:44,784 INFO L178 Difference]: Start difference. First operand has 556 places, 447 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:09:44,796 INFO L206 Difference]: Finished difference. Result has 565 places, 451 transitions [2020-02-10 23:09:44,796 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=27022, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27657, PETRI_PLACES=565, PETRI_TRANSITIONS=451} [2020-02-10 23:09:44,797 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 565 places, 451 transitions [2020-02-10 23:09:55,809 INFO L129 PetriNetUnfolder]: 0/3446 cut-off events. [2020-02-10 23:09:55,809 INFO L130 PetriNetUnfolder]: For 940718/940817 co-relation queries the response was YES. [2020-02-10 23:09:55,917 INFO L76 FinitePrefix]: Finished finitePrefix Result has 54432 conditions, 3446 events. 0/3446 cut-off events. For 940718/940817 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 55307 event pairs. 1/3320 useless extension candidates. Maximal degree in co-relation 54161. Up to 387 conditions per place. [2020-02-10 23:09:55,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 565 places, 451 transitions [2020-02-10 23:09:56,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 565 places, 451 transitions [2020-02-10 23:09:56,066 INFO L479 AbstractCegarLoop]: Abstraction has has 565 places, 451 transitions [2020-02-10 23:09:56,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:10:00,175 INFO L129 PetriNetUnfolder]: 0/3079 cut-off events. [2020-02-10 23:10:00,175 INFO L130 PetriNetUnfolder]: For 940718/940817 co-relation queries the response was YES. [2020-02-10 23:10:00,175 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:10:00,175 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:10:00,176 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:10:00,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:10:00,176 INFO L82 PathProgramCache]: Analyzing trace with hash 275879784, now seen corresponding path program 51 times [2020-02-10 23:10:00,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:10:00,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236713093] [2020-02-10 23:10:00,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:10:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:10:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:10:00,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236713093] [2020-02-10 23:10:00,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:10:00,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:10:00,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801595999] [2020-02-10 23:10:00,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:10:00,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:10:00,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:10:00,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:10:00,368 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:10:00,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 451 transitions. Second operand 8 states. [2020-02-10 23:10:00,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:10:00,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:10:00,369 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:10:18,865 INFO L129 PetriNetUnfolder]: 46/3544 cut-off events. [2020-02-10 23:10:18,865 INFO L130 PetriNetUnfolder]: For 988576/989460 co-relation queries the response was YES. [2020-02-10 23:10:18,980 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57068 conditions, 3544 events. 46/3544 cut-off events. For 988576/989460 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 56019 event pairs. 10/3501 useless extension candidates. Maximal degree in co-relation 56796. Up to 630 conditions per place. [2020-02-10 23:10:19,146 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 319 selfloop transitions, 153 changer transitions 2/486 dead transitions. [2020-02-10 23:10:19,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:10:19,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:10:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:10:19,147 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:10:19,147 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:10:19,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:10:19,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:10:19,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:10:19,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:10:19,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:10:19,148 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:10:19,149 INFO L178 Difference]: Start difference. First operand has 565 places, 451 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:10:19,156 INFO L206 Difference]: Finished difference. Result has 577 places, 463 transitions [2020-02-10 23:10:19,157 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=27657, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=28774, PETRI_PLACES=577, PETRI_TRANSITIONS=463} [2020-02-10 23:10:19,157 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 577 places, 463 transitions [2020-02-10 23:10:29,652 INFO L129 PetriNetUnfolder]: 0/3437 cut-off events. [2020-02-10 23:10:29,652 INFO L130 PetriNetUnfolder]: For 977711/977808 co-relation queries the response was YES. [2020-02-10 23:10:29,758 INFO L76 FinitePrefix]: Finished finitePrefix Result has 55224 conditions, 3437 events. 0/3437 cut-off events. For 977711/977808 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 55110 event pairs. 1/3311 useless extension candidates. Maximal degree in co-relation 54947. Up to 386 conditions per place. [2020-02-10 23:10:29,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 577 places, 463 transitions [2020-02-10 23:10:29,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 576 places, 463 transitions [2020-02-10 23:10:29,930 INFO L479 AbstractCegarLoop]: Abstraction has has 576 places, 463 transitions [2020-02-10 23:10:29,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:10:34,033 INFO L129 PetriNetUnfolder]: 0/3071 cut-off events. [2020-02-10 23:10:34,034 INFO L130 PetriNetUnfolder]: For 977711/977808 co-relation queries the response was YES. [2020-02-10 23:10:34,034 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:10:34,034 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:10:34,034 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:10:34,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:10:34,034 INFO L82 PathProgramCache]: Analyzing trace with hash 178784088, now seen corresponding path program 52 times [2020-02-10 23:10:34,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:10:34,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136617509] [2020-02-10 23:10:34,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:10:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:10:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:10:34,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136617509] [2020-02-10 23:10:34,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:10:34,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:10:34,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099729923] [2020-02-10 23:10:34,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:10:34,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:10:34,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:10:34,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:10:34,255 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:10:34,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 463 transitions. Second operand 8 states. [2020-02-10 23:10:34,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:10:34,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:10:34,255 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:10:53,579 INFO L129 PetriNetUnfolder]: 46/3539 cut-off events. [2020-02-10 23:10:53,579 INFO L130 PetriNetUnfolder]: For 1026270/1027109 co-relation queries the response was YES. [2020-02-10 23:10:53,692 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57868 conditions, 3539 events. 46/3539 cut-off events. For 1026270/1027109 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 55962 event pairs. 10/3497 useless extension candidates. Maximal degree in co-relation 57590. Up to 620 conditions per place. [2020-02-10 23:10:53,855 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 337 selfloop transitions, 124 changer transitions 1/474 dead transitions. [2020-02-10 23:10:53,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:10:53,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:10:53,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:10:53,856 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:10:53,856 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:10:53,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:10:53,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:10:53,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:10:53,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:10:53,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:10:53,858 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:10:53,858 INFO L178 Difference]: Start difference. First operand has 576 places, 463 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:10:53,865 INFO L206 Difference]: Finished difference. Result has 586 places, 469 transitions [2020-02-10 23:10:53,865 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=28774, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=29364, PETRI_PLACES=586, PETRI_TRANSITIONS=469} [2020-02-10 23:10:53,866 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 586 places, 469 transitions [2020-02-10 23:11:04,844 INFO L129 PetriNetUnfolder]: 0/3434 cut-off events. [2020-02-10 23:11:04,844 INFO L130 PetriNetUnfolder]: For 1009721/1009818 co-relation queries the response was YES. [2020-02-10 23:11:04,951 INFO L76 FinitePrefix]: Finished finitePrefix Result has 55919 conditions, 3434 events. 0/3434 cut-off events. For 1009721/1009818 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 55104 event pairs. 1/3309 useless extension candidates. Maximal degree in co-relation 55638. Up to 386 conditions per place. [2020-02-10 23:11:04,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 586 places, 469 transitions [2020-02-10 23:11:05,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 585 places, 469 transitions [2020-02-10 23:11:05,097 INFO L479 AbstractCegarLoop]: Abstraction has has 585 places, 469 transitions [2020-02-10 23:11:05,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:11:09,557 INFO L129 PetriNetUnfolder]: 0/3069 cut-off events. [2020-02-10 23:11:09,558 INFO L130 PetriNetUnfolder]: For 1009874/1010011 co-relation queries the response was YES. [2020-02-10 23:11:09,558 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:11:09,558 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:11:09,558 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:11:09,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:11:09,558 INFO L82 PathProgramCache]: Analyzing trace with hash -645773950, now seen corresponding path program 53 times [2020-02-10 23:11:09,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:11:09,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739295091] [2020-02-10 23:11:09,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:11:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:11:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:11:09,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739295091] [2020-02-10 23:11:09,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:11:09,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:11:09,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305726774] [2020-02-10 23:11:09,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:11:09,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:11:09,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:11:09,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:11:09,802 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:11:09,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 469 transitions. Second operand 8 states. [2020-02-10 23:11:09,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:11:09,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:11:09,803 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:11:30,046 INFO L129 PetriNetUnfolder]: 46/3531 cut-off events. [2020-02-10 23:11:30,046 INFO L130 PetriNetUnfolder]: For 1060674/1062562 co-relation queries the response was YES. [2020-02-10 23:11:30,160 INFO L76 FinitePrefix]: Finished finitePrefix Result has 58550 conditions, 3531 events. 46/3531 cut-off events. For 1060674/1062562 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 55804 event pairs. 29/3503 useless extension candidates. Maximal degree in co-relation 58268. Up to 868 conditions per place. [2020-02-10 23:11:30,327 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 358 selfloop transitions, 116 changer transitions 3/489 dead transitions. [2020-02-10 23:11:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:11:30,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:11:30,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:11:30,328 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:11:30,329 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:11:30,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:11:30,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:11:30,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:11:30,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:11:30,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:11:30,330 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:11:30,330 INFO L178 Difference]: Start difference. First operand has 585 places, 469 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:11:30,337 INFO L206 Difference]: Finished difference. Result has 594 places, 469 transitions [2020-02-10 23:11:30,338 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=29364, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=29574, PETRI_PLACES=594, PETRI_TRANSITIONS=469} [2020-02-10 23:11:30,338 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 594 places, 469 transitions [2020-02-10 23:11:41,934 INFO L129 PetriNetUnfolder]: 0/3429 cut-off events. [2020-02-10 23:11:41,934 INFO L130 PetriNetUnfolder]: For 1037241/1037378 co-relation queries the response was YES. [2020-02-10 23:11:42,049 INFO L76 FinitePrefix]: Finished finitePrefix Result has 56507 conditions, 3429 events. 0/3429 cut-off events. For 1037241/1037378 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 55010 event pairs. 0/3302 useless extension candidates. Maximal degree in co-relation 56223. Up to 386 conditions per place. [2020-02-10 23:11:42,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 594 places, 469 transitions [2020-02-10 23:11:42,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 593 places, 469 transitions [2020-02-10 23:11:42,203 INFO L479 AbstractCegarLoop]: Abstraction has has 593 places, 469 transitions [2020-02-10 23:11:42,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:11:46,739 INFO L129 PetriNetUnfolder]: 0/3065 cut-off events. [2020-02-10 23:11:46,739 INFO L130 PetriNetUnfolder]: For 1036788/1036847 co-relation queries the response was YES. [2020-02-10 23:11:46,739 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:11:46,739 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:11:46,739 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:11:46,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:11:46,739 INFO L82 PathProgramCache]: Analyzing trace with hash -422640544, now seen corresponding path program 54 times [2020-02-10 23:11:46,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:11:46,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105825654] [2020-02-10 23:11:46,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:11:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:11:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:11:47,033 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105825654] [2020-02-10 23:11:47,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:11:47,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:11:47,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060052475] [2020-02-10 23:11:47,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:11:47,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:11:47,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:11:47,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:11:47,035 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:11:47,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 469 transitions. Second operand 8 states. [2020-02-10 23:11:47,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:11:47,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:11:47,037 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:12:06,713 INFO L129 PetriNetUnfolder]: 45/3540 cut-off events. [2020-02-10 23:12:06,714 INFO L130 PetriNetUnfolder]: For 1093465/1095131 co-relation queries the response was YES. [2020-02-10 23:12:06,832 INFO L76 FinitePrefix]: Finished finitePrefix Result has 59386 conditions, 3540 events. 45/3540 cut-off events. For 1093465/1095131 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 55966 event pairs. 4/3486 useless extension candidates. Maximal degree in co-relation 59101. Up to 732 conditions per place. [2020-02-10 23:12:07,002 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 335 selfloop transitions, 159 changer transitions 1/507 dead transitions. [2020-02-10 23:12:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:12:07,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:12:07,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:12:07,003 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:12:07,003 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:12:07,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:12:07,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:12:07,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:12:07,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:12:07,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:12:07,005 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:12:07,005 INFO L178 Difference]: Start difference. First operand has 593 places, 469 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:12:07,017 INFO L206 Difference]: Finished difference. Result has 604 places, 471 transitions [2020-02-10 23:12:07,017 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=29574, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30053, PETRI_PLACES=604, PETRI_TRANSITIONS=471} [2020-02-10 23:12:07,018 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 604 places, 471 transitions [2020-02-10 23:12:19,636 INFO L129 PetriNetUnfolder]: 0/3438 cut-off events. [2020-02-10 23:12:19,637 INFO L130 PetriNetUnfolder]: For 1074231/1074286 co-relation queries the response was YES. [2020-02-10 23:12:19,751 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57498 conditions, 3438 events. 0/3438 cut-off events. For 1074231/1074286 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 55257 event pairs. 1/3311 useless extension candidates. Maximal degree in co-relation 57209. Up to 387 conditions per place. [2020-02-10 23:12:19,751 INFO L82 GeneralOperation]: Start removeDead. Operand has 604 places, 471 transitions [2020-02-10 23:12:19,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 603 places, 471 transitions [2020-02-10 23:12:19,908 INFO L479 AbstractCegarLoop]: Abstraction has has 603 places, 471 transitions [2020-02-10 23:12:19,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:12:23,975 INFO L129 PetriNetUnfolder]: 0/3073 cut-off events. [2020-02-10 23:12:23,975 INFO L130 PetriNetUnfolder]: For 1074717/1074760 co-relation queries the response was YES. [2020-02-10 23:12:23,976 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:12:23,976 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:12:23,976 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:12:23,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:12:23,976 INFO L82 PathProgramCache]: Analyzing trace with hash 201379586, now seen corresponding path program 55 times [2020-02-10 23:12:23,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:12:23,976 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150209174] [2020-02-10 23:12:23,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:12:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:12:24,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:12:24,187 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150209174] [2020-02-10 23:12:24,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:12:24,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:12:24,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28473050] [2020-02-10 23:12:24,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:12:24,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:12:24,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:12:24,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:12:24,188 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:12:24,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 471 transitions. Second operand 8 states. [2020-02-10 23:12:24,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:12:24,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:12:24,192 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:12:43,810 INFO L129 PetriNetUnfolder]: 45/3536 cut-off events. [2020-02-10 23:12:43,810 INFO L130 PetriNetUnfolder]: For 1126782/1128448 co-relation queries the response was YES. [2020-02-10 23:12:43,927 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60153 conditions, 3536 events. 45/3536 cut-off events. For 1126782/1128448 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 55954 event pairs. 14/3492 useless extension candidates. Maximal degree in co-relation 59863. Up to 679 conditions per place. [2020-02-10 23:12:44,152 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 316 selfloop transitions, 154 changer transitions 2/484 dead transitions. [2020-02-10 23:12:44,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:12:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:12:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:12:44,153 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:12:44,153 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:12:44,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:12:44,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:12:44,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:12:44,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:12:44,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:12:44,155 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:12:44,155 INFO L178 Difference]: Start difference. First operand has 603 places, 471 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:12:44,162 INFO L206 Difference]: Finished difference. Result has 614 places, 474 transitions [2020-02-10 23:12:44,163 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=30053, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30514, PETRI_PLACES=614, PETRI_TRANSITIONS=474} [2020-02-10 23:12:44,163 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 614 places, 474 transitions [2020-02-10 23:12:55,242 INFO L129 PetriNetUnfolder]: 0/3429 cut-off events. [2020-02-10 23:12:55,242 INFO L130 PetriNetUnfolder]: For 1107445/1107490 co-relation queries the response was YES. [2020-02-10 23:12:55,358 INFO L76 FinitePrefix]: Finished finitePrefix Result has 58196 conditions, 3429 events. 0/3429 cut-off events. For 1107445/1107490 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 54957 event pairs. 1/3306 useless extension candidates. Maximal degree in co-relation 57902. Up to 386 conditions per place. [2020-02-10 23:12:55,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 614 places, 474 transitions [2020-02-10 23:12:55,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 613 places, 474 transitions [2020-02-10 23:12:55,512 INFO L479 AbstractCegarLoop]: Abstraction has has 613 places, 474 transitions [2020-02-10 23:12:55,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:12:59,780 INFO L129 PetriNetUnfolder]: 0/3065 cut-off events. [2020-02-10 23:12:59,781 INFO L130 PetriNetUnfolder]: For 1108256/1108315 co-relation queries the response was YES. [2020-02-10 23:12:59,781 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:12:59,781 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:12:59,781 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:12:59,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:12:59,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1372629692, now seen corresponding path program 56 times [2020-02-10 23:12:59,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:12:59,782 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444059668] [2020-02-10 23:12:59,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:12:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:12:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:12:59,998 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444059668] [2020-02-10 23:12:59,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:12:59,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:12:59,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992366033] [2020-02-10 23:12:59,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:12:59,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:12:59,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:12:59,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:13:00,000 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:13:00,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 474 transitions. Second operand 8 states. [2020-02-10 23:13:00,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:13:00,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:13:00,001 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:13:20,803 INFO L129 PetriNetUnfolder]: 45/3527 cut-off events. [2020-02-10 23:13:20,803 INFO L130 PetriNetUnfolder]: For 1159488/1160492 co-relation queries the response was YES. [2020-02-10 23:13:20,924 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60862 conditions, 3527 events. 45/3527 cut-off events. For 1159488/1160492 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 55766 event pairs. 1/3472 useless extension candidates. Maximal degree in co-relation 60567. Up to 857 conditions per place. [2020-02-10 23:13:21,099 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 341 selfloop transitions, 131 changer transitions 0/484 dead transitions. [2020-02-10 23:13:21,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:13:21,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:13:21,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:13:21,100 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:13:21,100 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:13:21,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:13:21,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:13:21,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:13:21,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:13:21,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:13:21,102 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:13:21,102 INFO L178 Difference]: Start difference. First operand has 613 places, 474 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:13:21,114 INFO L206 Difference]: Finished difference. Result has 621 places, 474 transitions [2020-02-10 23:13:21,115 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=30514, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30779, PETRI_PLACES=621, PETRI_TRANSITIONS=474} [2020-02-10 23:13:21,115 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 621 places, 474 transitions [2020-02-10 23:13:33,282 INFO L129 PetriNetUnfolder]: 0/3428 cut-off events. [2020-02-10 23:13:33,282 INFO L130 PetriNetUnfolder]: For 1137978/1138037 co-relation queries the response was YES. [2020-02-10 23:13:33,397 INFO L76 FinitePrefix]: Finished finitePrefix Result has 58856 conditions, 3428 events. 0/3428 cut-off events. For 1137978/1138037 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 54932 event pairs. 3/3306 useless extension candidates. Maximal degree in co-relation 58560. Up to 386 conditions per place. [2020-02-10 23:13:33,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 621 places, 474 transitions [2020-02-10 23:13:33,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 621 places, 474 transitions [2020-02-10 23:13:33,557 INFO L479 AbstractCegarLoop]: Abstraction has has 621 places, 474 transitions [2020-02-10 23:13:33,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:13:38,383 INFO L129 PetriNetUnfolder]: 0/3065 cut-off events. [2020-02-10 23:13:38,383 INFO L130 PetriNetUnfolder]: For 1137167/1137212 co-relation queries the response was YES. [2020-02-10 23:13:38,383 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:13:38,383 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:13:38,383 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:13:38,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:13:38,383 INFO L82 PathProgramCache]: Analyzing trace with hash -323970756, now seen corresponding path program 57 times [2020-02-10 23:13:38,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:13:38,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047354202] [2020-02-10 23:13:38,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:13:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:13:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:13:38,627 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047354202] [2020-02-10 23:13:38,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:13:38,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:13:38,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950413480] [2020-02-10 23:13:38,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:13:38,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:13:38,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:13:38,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:13:38,628 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:13:38,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 474 transitions. Second operand 8 states. [2020-02-10 23:13:38,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:13:38,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:13:38,629 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:13:59,947 INFO L129 PetriNetUnfolder]: 45/3526 cut-off events. [2020-02-10 23:13:59,947 INFO L130 PetriNetUnfolder]: For 1190084/1191088 co-relation queries the response was YES. Received shutdown request... [2020-02-10 23:14:00,074 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61533 conditions, 3526 events. 45/3526 cut-off events. For 1190084/1191088 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 55698 event pairs. 1/3468 useless extension candidates. Maximal degree in co-relation 61236. Up to 679 conditions per place. [2020-02-10 23:14:00,255 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 312 selfloop transitions, 175 changer transitions 0/499 dead transitions. [2020-02-10 23:14:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:14:00,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:14:00,257 WARN L544 AbstractCegarLoop]: Verification canceled [2020-02-10 23:14:00,261 WARN L227 ceAbstractionStarter]: Timeout [2020-02-10 23:14:00,262 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:14:00 BasicIcfg [2020-02-10 23:14:00,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 23:14:00,263 INFO L168 Benchmark]: Toolchain (without parser) took 835229.01 ms. Allocated memory was 145.2 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 120.4 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2020-02-10 23:14:00,264 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-10 23:14:00,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.87 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 118.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-02-10 23:14:00,265 INFO L168 Benchmark]: Boogie Preprocessor took 20.80 ms. Allocated memory is still 145.2 MB. Free memory was 118.4 MB in the beginning and 117.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-02-10 23:14:00,265 INFO L168 Benchmark]: RCFGBuilder took 313.04 ms. Allocated memory is still 145.2 MB. Free memory was 117.2 MB in the beginning and 105.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-02-10 23:14:00,265 INFO L168 Benchmark]: TraceAbstraction took 834852.81 ms. Allocated memory was 145.2 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 104.6 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2020-02-10 23:14:00,268 INFO L336 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 0.25 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 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 35.87 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 118.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.80 ms. Allocated memory is still 145.2 MB. Free memory was 118.4 MB in the beginning and 117.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 313.04 ms. Allocated memory is still 145.2 MB. Free memory was 117.2 MB in the beginning and 105.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 834852.81 ms. Allocated memory was 145.2 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 104.6 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.2s, 44 ProgramPointsBefore, 38 ProgramPointsAfterwards, 55 TransitionsBefore, 49 TransitionsAfterwards, 780 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 210 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 225 CheckedPairsTotal, 6 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 25). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type AutomatonWithImplicitSelfloops). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 834.6s, OverallIterations: 62, TraceHistogramMax: 1, AutomataDifference: 454.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 1179 SDtfs, 1194 SDslu, 920 SDs, 0 SdLazy, 2219 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 471 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 404 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=474occurred in iteration=60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 266.8s AutomataMinimizationTime, 61 MinimizatonAttempts, 40 StatesRemovedByMinimization, 61 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 14.4s InterpolantComputationTime, 1178 NumberOfCodeBlocks, 1178 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 1116 ConstructedInterpolants, 0 QuantifiedInterpolants, 358038 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 62 InterpolantComputations, 62 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