/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-VariableLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-10 23:28:36,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 23:28:36,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 23:28:36,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 23:28:36,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 23:28:36,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 23:28:36,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 23:28:36,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 23:28:36,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 23:28:36,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 23:28:36,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 23:28:36,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 23:28:36,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 23:28:36,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 23:28:36,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 23:28:36,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 23:28:36,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 23:28:36,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 23:28:36,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 23:28:36,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 23:28:36,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 23:28:36,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 23:28:36,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 23:28:36,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 23:28:36,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-10 23:28:36,704 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-VariableLbe.epf [2020-02-10 23:28:36,717 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 23:28:36,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 23:28:36,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 23:28:36,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 23:28:36,719 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 23:28:36,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 23:28:36,719 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 23:28:36,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 23:28:36,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 23:28:36,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 23:28:36,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 23:28:36,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 23:28:36,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 23:28:36,720 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 23:28:36,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 23:28:36,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 23:28:36,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 23:28:36,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 23:28:36,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 23:28:36,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 23:28:36,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 23:28:36,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:28:36,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 23:28:36,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 23:28:36,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 23:28:36,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 23:28:36,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 23:28:36,723 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-02-10 23:28:36,723 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-10 23:28:36,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 23:28:37,013 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 23:28:37,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 23:28:37,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 23:28:37,030 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 23:28:37,031 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 23:28:37,031 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl [2020-02-10 23:28:37,032 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl' [2020-02-10 23:28:37,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 23:28:37,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 23:28:37,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 23:28:37,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 23:28:37,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 23:28:37,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:37" (1/1) ... [2020-02-10 23:28:37,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:37" (1/1) ... [2020-02-10 23:28:37,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 23:28:37,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 23:28:37,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 23:28:37,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 23:28:37,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:37" (1/1) ... [2020-02-10 23:28:37,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:37" (1/1) ... [2020-02-10 23:28:37,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:37" (1/1) ... [2020-02-10 23:28:37,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:37" (1/1) ... [2020-02-10 23:28:37,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:37" (1/1) ... [2020-02-10 23:28:37,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:37" (1/1) ... [2020-02-10 23:28:37,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:37" (1/1) ... [2020-02-10 23:28:37,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 23:28:37,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 23:28:37,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 23:28:37,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 23:28:37,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:37" (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 23:28:37,193 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 23:28:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 23:28:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 23:28:37,194 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 23:28:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 23:28:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 23:28:37,195 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-10 23:28:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-10 23:28:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-10 23:28:37,196 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-02-10 23:28:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-02-10 23:28:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-02-10 23:28:37,196 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 23:28:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 23:28:37,197 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 23:28:37,197 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 23:28:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 23:28:37,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 23:28:37,198 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 23:28:37,374 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 23:28:37,375 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 23:28:37,378 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:28:37 BoogieIcfgContainer [2020-02-10 23:28:37,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 23:28:37,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 23:28:37,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 23:28:37,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 23:28:37,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:37" (1/2) ... [2020-02-10 23:28:37,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7b687d and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:28:37, skipping insertion in model container [2020-02-10 23:28:37,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:28:37" (2/2) ... [2020-02-10 23:28:37,397 INFO L109 eAbstractionObserver]: Analyzing ICFG example_5.bpl [2020-02-10 23:28:37,411 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 23:28:37,421 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 23:28:37,425 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 23:28:37,552 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-02-10 23:28:37,569 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 23:28:37,570 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-10 23:28:37,570 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 23:28:37,570 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-02-10 23:28:37,570 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 23:28:37,570 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 23:28:37,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 23:28:37,571 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 23:28:37,583 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions [2020-02-10 23:28:37,666 INFO L129 PetriNetUnfolder]: 49/98 cut-off events. [2020-02-10 23:28:37,666 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-02-10 23:28:37,677 INFO L76 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 98 events. 49/98 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 321 event pairs. 0/97 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2020-02-10 23:28:37,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 48 transitions [2020-02-10 23:28:37,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 41 transitions [2020-02-10 23:28:37,692 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 41 transitions [2020-02-10 23:28:37,693 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 37 places, 41 transitions [2020-02-10 23:28:37,756 INFO L129 PetriNetUnfolder]: 49/96 cut-off events. [2020-02-10 23:28:37,756 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-02-10 23:28:37,758 INFO L76 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 96 events. 49/96 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 264 event pairs. 0/96 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2020-02-10 23:28:37,763 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 37 places, 41 transitions [2020-02-10 23:28:37,802 INFO L129 PetriNetUnfolder]: 49/96 cut-off events. [2020-02-10 23:28:37,802 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-02-10 23:28:37,807 INFO L76 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 96 events. 49/96 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 264 event pairs. 0/96 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2020-02-10 23:28:37,810 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 440 [2020-02-10 23:28:37,812 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-02-10 23:28:37,883 INFO L206 etLargeBlockEncoding]: Checked pairs total: 130 [2020-02-10 23:28:37,883 INFO L214 etLargeBlockEncoding]: Total number of compositions: 5 [2020-02-10 23:28:37,884 INFO L160 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 196 [2020-02-10 23:28:37,907 INFO L129 PetriNetUnfolder]: 49/90 cut-off events. [2020-02-10 23:28:37,907 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-02-10 23:28:37,907 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:37,909 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:37,909 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:37,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:37,916 INFO L82 PathProgramCache]: Analyzing trace with hash 51321556, now seen corresponding path program 1 times [2020-02-10 23:28:37,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:37,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595493497] [2020-02-10 23:28:37,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:38,073 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 23:28:38,074 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595493497] [2020-02-10 23:28:38,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:38,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:38,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150988194] [2020-02-10 23:28:38,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:38,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:38,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:38,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:38,110 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2020-02-10 23:28:38,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 36 transitions. Second operand 3 states. [2020-02-10 23:28:38,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:38,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2020-02-10 23:28:38,115 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:38,178 INFO L129 PetriNetUnfolder]: 33/70 cut-off events. [2020-02-10 23:28:38,178 INFO L130 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2020-02-10 23:28:38,180 INFO L76 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 70 events. 33/70 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 193 event pairs. 5/75 useless extension candidates. Maximal degree in co-relation 75. Up to 20 conditions per place. [2020-02-10 23:28:38,182 INFO L145 encePairwiseOnDemand]: 50/53 looper letters, 3 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2020-02-10 23:28:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2020-02-10 23:28:38,196 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9245283018867925 [2020-02-10 23:28:38,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2020-02-10 23:28:38,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2020-02-10 23:28:38,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:38,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2020-02-10 23:28:38,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:38,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:38,209 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:38,211 INFO L178 Difference]: Start difference. First operand has 32 places, 36 transitions. Second operand 3 states and 147 transitions. [2020-02-10 23:28:38,213 INFO L206 Difference]: Finished difference. Result has 34 places, 34 transitions [2020-02-10 23:28:38,215 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2020-02-10 23:28:38,216 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 34 places, 34 transitions [2020-02-10 23:28:38,228 INFO L129 PetriNetUnfolder]: 33/70 cut-off events. [2020-02-10 23:28:38,228 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2020-02-10 23:28:38,229 INFO L76 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 70 events. 33/70 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 170 event pairs. 0/70 useless extension candidates. Maximal degree in co-relation 130. Up to 20 conditions per place. [2020-02-10 23:28:38,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 34 transitions [2020-02-10 23:28:38,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 34 transitions [2020-02-10 23:28:38,232 INFO L479 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions [2020-02-10 23:28:38,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:38,250 INFO L129 PetriNetUnfolder]: 33/69 cut-off events. [2020-02-10 23:28:38,250 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2020-02-10 23:28:38,250 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:38,250 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:38,252 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:38,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:38,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1807199878, now seen corresponding path program 1 times [2020-02-10 23:28:38,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:38,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976077982] [2020-02-10 23:28:38,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:38,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976077982] [2020-02-10 23:28:38,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:38,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:38,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524030600] [2020-02-10 23:28:38,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:38,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:38,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:38,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:38,300 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2020-02-10 23:28:38,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions. Second operand 3 states. [2020-02-10 23:28:38,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:38,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2020-02-10 23:28:38,301 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:38,326 INFO L129 PetriNetUnfolder]: 8/31 cut-off events. [2020-02-10 23:28:38,326 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2020-02-10 23:28:38,327 INFO L76 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 31 events. 8/31 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs. 11/42 useless extension candidates. Maximal degree in co-relation 54. Up to 6 conditions per place. [2020-02-10 23:28:38,328 INFO L145 encePairwiseOnDemand]: 48/53 looper letters, 1 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2020-02-10 23:28:38,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:38,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:38,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2020-02-10 23:28:38,331 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9245283018867925 [2020-02-10 23:28:38,331 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2020-02-10 23:28:38,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2020-02-10 23:28:38,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:38,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2020-02-10 23:28:38,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:38,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:38,335 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:38,335 INFO L178 Difference]: Start difference. First operand has 34 places, 34 transitions. Second operand 3 states and 147 transitions. [2020-02-10 23:28:38,335 INFO L206 Difference]: Finished difference. Result has 36 places, 26 transitions [2020-02-10 23:28:38,336 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2020-02-10 23:28:38,337 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 36 places, 26 transitions [2020-02-10 23:28:38,341 INFO L129 PetriNetUnfolder]: 8/31 cut-off events. [2020-02-10 23:28:38,342 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-02-10 23:28:38,342 INFO L76 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 31 events. 8/31 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs. 0/31 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2020-02-10 23:28:38,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 26 transitions [2020-02-10 23:28:38,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 26 transitions [2020-02-10 23:28:38,343 INFO L479 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions [2020-02-10 23:28:38,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:38,348 INFO L129 PetriNetUnfolder]: 8/30 cut-off events. [2020-02-10 23:28:38,348 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-02-10 23:28:38,348 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:38,348 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:38,349 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:38,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:38,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1632527448, now seen corresponding path program 1 times [2020-02-10 23:28:38,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:38,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161148376] [2020-02-10 23:28:38,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:38,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161148376] [2020-02-10 23:28:38,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:38,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:38,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125874826] [2020-02-10 23:28:38,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:38,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:38,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:38,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:38,401 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2020-02-10 23:28:38,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions. Second operand 3 states. [2020-02-10 23:28:38,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:38,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2020-02-10 23:28:38,402 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:38,412 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2020-02-10 23:28:38,412 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-02-10 23:28:38,413 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 18 events. 1/18 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 15 event pairs. 4/22 useless extension candidates. Maximal degree in co-relation 29. Up to 3 conditions per place. [2020-02-10 23:28:38,413 INFO L145 encePairwiseOnDemand]: 49/53 looper letters, 1 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2020-02-10 23:28:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2020-02-10 23:28:38,416 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9182389937106918 [2020-02-10 23:28:38,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2020-02-10 23:28:38,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2020-02-10 23:28:38,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:38,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2020-02-10 23:28:38,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:38,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:38,418 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:38,419 INFO L178 Difference]: Start difference. First operand has 36 places, 26 transitions. Second operand 3 states and 146 transitions. [2020-02-10 23:28:38,419 INFO L206 Difference]: Finished difference. Result has 38 places, 18 transitions [2020-02-10 23:28:38,419 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=18} [2020-02-10 23:28:38,420 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 38 places, 18 transitions [2020-02-10 23:28:38,423 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2020-02-10 23:28:38,423 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2020-02-10 23:28:38,424 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 18 events. 1/18 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 14 event pairs. 0/18 useless extension candidates. Maximal degree in co-relation 28. Up to 3 conditions per place. [2020-02-10 23:28:38,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 18 transitions [2020-02-10 23:28:38,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 18 transitions [2020-02-10 23:28:38,425 INFO L479 AbstractCegarLoop]: Abstraction has has 38 places, 18 transitions [2020-02-10 23:28:38,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:38,429 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2020-02-10 23:28:38,429 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2020-02-10 23:28:38,429 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:38,429 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:38,431 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:38,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:38,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1749919668, now seen corresponding path program 1 times [2020-02-10 23:28:38,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:38,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794810947] [2020-02-10 23:28:38,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:38,847 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 23:28:38,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794810947] [2020-02-10 23:28:38,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:38,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:38,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94296901] [2020-02-10 23:28:38,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:38,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:38,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:38,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:38,851 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:38,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 18 transitions. Second operand 7 states. [2020-02-10 23:28:38,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:38,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:38,852 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:39,001 INFO L129 PetriNetUnfolder]: 62/167 cut-off events. [2020-02-10 23:28:39,002 INFO L130 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2020-02-10 23:28:39,003 INFO L76 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 167 events. 62/167 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 775 event pairs. 1/153 useless extension candidates. Maximal degree in co-relation 332. Up to 41 conditions per place. [2020-02-10 23:28:39,006 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 14 selfloop transitions, 4 changer transitions 1/31 dead transitions. [2020-02-10 23:28:39,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:39,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:39,010 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:39,010 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:39,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:39,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:39,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:39,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:39,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:39,015 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:39,015 INFO L178 Difference]: Start difference. First operand has 38 places, 18 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:39,016 INFO L206 Difference]: Finished difference. Result has 49 places, 21 transitions [2020-02-10 23:28:39,016 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=109, PETRI_PLACES=49, PETRI_TRANSITIONS=21} [2020-02-10 23:28:39,016 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 21 transitions [2020-02-10 23:28:39,025 INFO L129 PetriNetUnfolder]: 4/48 cut-off events. [2020-02-10 23:28:39,025 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2020-02-10 23:28:39,026 INFO L76 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 48 events. 4/48 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 152 event pairs. 0/44 useless extension candidates. Maximal degree in co-relation 102. Up to 8 conditions per place. [2020-02-10 23:28:39,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 21 transitions [2020-02-10 23:28:39,037 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 21 transitions [2020-02-10 23:28:39,038 INFO L479 AbstractCegarLoop]: Abstraction has has 48 places, 21 transitions [2020-02-10 23:28:39,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:39,049 INFO L129 PetriNetUnfolder]: 4/44 cut-off events. [2020-02-10 23:28:39,049 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2020-02-10 23:28:39,049 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:39,050 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:39,050 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:39,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:39,050 INFO L82 PathProgramCache]: Analyzing trace with hash -922308548, now seen corresponding path program 2 times [2020-02-10 23:28:39,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:39,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095907770] [2020-02-10 23:28:39,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:39,349 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 23:28:39,350 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095907770] [2020-02-10 23:28:39,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:39,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:39,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731534216] [2020-02-10 23:28:39,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:39,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:39,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:39,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:39,353 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:39,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 21 transitions. Second operand 7 states. [2020-02-10 23:28:39,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:39,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:39,354 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:39,463 INFO L129 PetriNetUnfolder]: 67/227 cut-off events. [2020-02-10 23:28:39,463 INFO L130 PetriNetUnfolder]: For 278/294 co-relation queries the response was YES. [2020-02-10 23:28:39,466 INFO L76 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 227 events. 67/227 cut-off events. For 278/294 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1370 event pairs. 1/212 useless extension candidates. Maximal degree in co-relation 591. Up to 51 conditions per place. [2020-02-10 23:28:39,471 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 17 selfloop transitions, 8 changer transitions 0/37 dead transitions. [2020-02-10 23:28:39,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:39,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:39,473 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:39,473 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:39,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:39,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:39,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:39,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:39,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:39,478 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:39,479 INFO L178 Difference]: Start difference. First operand has 48 places, 21 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:39,479 INFO L206 Difference]: Finished difference. Result has 59 places, 27 transitions [2020-02-10 23:28:39,480 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=182, PETRI_PLACES=59, PETRI_TRANSITIONS=27} [2020-02-10 23:28:39,480 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 59 places, 27 transitions [2020-02-10 23:28:39,502 INFO L129 PetriNetUnfolder]: 9/99 cut-off events. [2020-02-10 23:28:39,503 INFO L130 PetriNetUnfolder]: For 146/151 co-relation queries the response was YES. [2020-02-10 23:28:39,504 INFO L76 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 99 events. 9/99 cut-off events. For 146/151 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 522 event pairs. 0/89 useless extension candidates. Maximal degree in co-relation 249. Up to 18 conditions per place. [2020-02-10 23:28:39,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 27 transitions [2020-02-10 23:28:39,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 27 transitions [2020-02-10 23:28:39,508 INFO L479 AbstractCegarLoop]: Abstraction has has 59 places, 27 transitions [2020-02-10 23:28:39,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:39,528 INFO L129 PetriNetUnfolder]: 9/90 cut-off events. [2020-02-10 23:28:39,528 INFO L130 PetriNetUnfolder]: For 147/153 co-relation queries the response was YES. [2020-02-10 23:28:39,528 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:39,528 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:39,528 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:39,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:39,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1166928160, now seen corresponding path program 3 times [2020-02-10 23:28:39,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:39,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843537240] [2020-02-10 23:28:39,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:39,794 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 23:28:39,795 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843537240] [2020-02-10 23:28:39,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:39,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:39,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116391640] [2020-02-10 23:28:39,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:39,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:39,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:39,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:39,798 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:39,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 27 transitions. Second operand 7 states. [2020-02-10 23:28:39,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:39,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:39,801 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:39,956 INFO L129 PetriNetUnfolder]: 65/228 cut-off events. [2020-02-10 23:28:39,957 INFO L130 PetriNetUnfolder]: For 614/638 co-relation queries the response was YES. [2020-02-10 23:28:39,959 INFO L76 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 228 events. 65/228 cut-off events. For 614/638 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1337 event pairs. 1/213 useless extension candidates. Maximal degree in co-relation 739. Up to 54 conditions per place. [2020-02-10 23:28:39,963 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 20 selfloop transitions, 7 changer transitions 1/40 dead transitions. [2020-02-10 23:28:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:39,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:39,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:39,965 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:39,966 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:39,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:39,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:39,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:39,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:39,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:39,968 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:39,968 INFO L178 Difference]: Start difference. First operand has 59 places, 27 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:39,969 INFO L206 Difference]: Finished difference. Result has 68 places, 28 transitions [2020-02-10 23:28:39,969 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=212, PETRI_PLACES=68, PETRI_TRANSITIONS=28} [2020-02-10 23:28:39,970 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 68 places, 28 transitions [2020-02-10 23:28:39,985 INFO L129 PetriNetUnfolder]: 11/113 cut-off events. [2020-02-10 23:28:39,985 INFO L130 PetriNetUnfolder]: For 228/234 co-relation queries the response was YES. [2020-02-10 23:28:39,987 INFO L76 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 113 events. 11/113 cut-off events. For 228/234 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 639 event pairs. 0/103 useless extension candidates. Maximal degree in co-relation 315. Up to 22 conditions per place. [2020-02-10 23:28:39,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 28 transitions [2020-02-10 23:28:39,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 28 transitions [2020-02-10 23:28:39,989 INFO L479 AbstractCegarLoop]: Abstraction has has 67 places, 28 transitions [2020-02-10 23:28:39,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:40,004 INFO L129 PetriNetUnfolder]: 11/103 cut-off events. [2020-02-10 23:28:40,004 INFO L130 PetriNetUnfolder]: For 228/234 co-relation queries the response was YES. [2020-02-10 23:28:40,004 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:40,005 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:40,005 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:40,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:40,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1878276478, now seen corresponding path program 4 times [2020-02-10 23:28:40,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:40,006 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938019889] [2020-02-10 23:28:40,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:40,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938019889] [2020-02-10 23:28:40,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:40,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:40,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671773662] [2020-02-10 23:28:40,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:40,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:40,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:40,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:40,174 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:40,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 28 transitions. Second operand 7 states. [2020-02-10 23:28:40,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:40,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:40,175 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:40,316 INFO L129 PetriNetUnfolder]: 65/247 cut-off events. [2020-02-10 23:28:40,317 INFO L130 PetriNetUnfolder]: For 889/913 co-relation queries the response was YES. [2020-02-10 23:28:40,319 INFO L76 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 247 events. 65/247 cut-off events. For 889/913 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1530 event pairs. 1/232 useless extension candidates. Maximal degree in co-relation 877. Up to 54 conditions per place. [2020-02-10 23:28:40,324 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 22 selfloop transitions, 7 changer transitions 1/42 dead transitions. [2020-02-10 23:28:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:40,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:40,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:40,326 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:40,326 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:40,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:40,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:40,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:40,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:40,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:40,329 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:40,329 INFO L178 Difference]: Start difference. First operand has 67 places, 28 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:40,330 INFO L206 Difference]: Finished difference. Result has 77 places, 30 transitions [2020-02-10 23:28:40,330 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=262, PETRI_PLACES=77, PETRI_TRANSITIONS=30} [2020-02-10 23:28:40,330 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 77 places, 30 transitions [2020-02-10 23:28:40,351 INFO L129 PetriNetUnfolder]: 14/138 cut-off events. [2020-02-10 23:28:40,352 INFO L130 PetriNetUnfolder]: For 415/425 co-relation queries the response was YES. [2020-02-10 23:28:40,353 INFO L76 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 138 events. 14/138 cut-off events. For 415/425 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 859 event pairs. 0/125 useless extension candidates. Maximal degree in co-relation 426. Up to 28 conditions per place. [2020-02-10 23:28:40,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 30 transitions [2020-02-10 23:28:40,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 30 transitions [2020-02-10 23:28:40,357 INFO L479 AbstractCegarLoop]: Abstraction has has 76 places, 30 transitions [2020-02-10 23:28:40,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:40,376 INFO L129 PetriNetUnfolder]: 14/126 cut-off events. [2020-02-10 23:28:40,376 INFO L130 PetriNetUnfolder]: For 415/425 co-relation queries the response was YES. [2020-02-10 23:28:40,376 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:40,376 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:40,377 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:40,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:40,377 INFO L82 PathProgramCache]: Analyzing trace with hash 283512164, now seen corresponding path program 5 times [2020-02-10 23:28:40,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:40,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034616537] [2020-02-10 23:28:40,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:40,588 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 23:28:40,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034616537] [2020-02-10 23:28:40,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:40,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:40,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715131538] [2020-02-10 23:28:40,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:40,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:40,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:40,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:40,595 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:40,595 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 30 transitions. Second operand 7 states. [2020-02-10 23:28:40,595 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:40,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:40,596 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:40,828 INFO L129 PetriNetUnfolder]: 72/335 cut-off events. [2020-02-10 23:28:40,828 INFO L130 PetriNetUnfolder]: For 1578/1595 co-relation queries the response was YES. [2020-02-10 23:28:40,832 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 335 events. 72/335 cut-off events. For 1578/1595 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2474 event pairs. 1/320 useless extension candidates. Maximal degree in co-relation 1256. Up to 75 conditions per place. [2020-02-10 23:28:40,840 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 24 selfloop transitions, 11 changer transitions 1/48 dead transitions. [2020-02-10 23:28:40,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:40,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:40,843 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:40,843 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:40,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:40,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:40,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:40,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:40,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:40,846 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:40,847 INFO L178 Difference]: Start difference. First operand has 76 places, 30 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:40,847 INFO L206 Difference]: Finished difference. Result has 87 places, 37 transitions [2020-02-10 23:28:40,848 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=87, PETRI_TRANSITIONS=37} [2020-02-10 23:28:40,848 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 37 transitions [2020-02-10 23:28:40,897 INFO L129 PetriNetUnfolder]: 22/223 cut-off events. [2020-02-10 23:28:40,897 INFO L130 PetriNetUnfolder]: For 1066/1071 co-relation queries the response was YES. [2020-02-10 23:28:40,900 INFO L76 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 223 events. 22/223 cut-off events. For 1066/1071 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1686 event pairs. 0/203 useless extension candidates. Maximal degree in co-relation 779. Up to 44 conditions per place. [2020-02-10 23:28:40,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 37 transitions [2020-02-10 23:28:40,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 37 transitions [2020-02-10 23:28:40,905 INFO L479 AbstractCegarLoop]: Abstraction has has 87 places, 37 transitions [2020-02-10 23:28:40,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:40,942 INFO L129 PetriNetUnfolder]: 22/203 cut-off events. [2020-02-10 23:28:40,942 INFO L130 PetriNetUnfolder]: For 1086/1090 co-relation queries the response was YES. [2020-02-10 23:28:40,942 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:40,942 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:40,942 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:40,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:40,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1746237412, now seen corresponding path program 6 times [2020-02-10 23:28:40,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:40,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201170088] [2020-02-10 23:28:40,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:41,136 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201170088] [2020-02-10 23:28:41,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:41,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:41,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823646281] [2020-02-10 23:28:41,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:41,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:41,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:41,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:41,141 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:41,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 37 transitions. Second operand 7 states. [2020-02-10 23:28:41,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:41,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:41,143 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:41,341 INFO L129 PetriNetUnfolder]: 74/366 cut-off events. [2020-02-10 23:28:41,341 INFO L130 PetriNetUnfolder]: For 2592/2638 co-relation queries the response was YES. [2020-02-10 23:28:41,345 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 366 events. 74/366 cut-off events. For 2592/2638 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2817 event pairs. 3/353 useless extension candidates. Maximal degree in co-relation 1510. Up to 75 conditions per place. [2020-02-10 23:28:41,353 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 28 selfloop transitions, 9 changer transitions 2/51 dead transitions. [2020-02-10 23:28:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:41,356 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:41,356 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:41,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:41,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:41,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:41,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:41,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:41,359 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:41,359 INFO L178 Difference]: Start difference. First operand has 87 places, 37 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:41,362 INFO L206 Difference]: Finished difference. Result has 97 places, 40 transitions [2020-02-10 23:28:41,363 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=483, PETRI_PLACES=97, PETRI_TRANSITIONS=40} [2020-02-10 23:28:41,363 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 97 places, 40 transitions [2020-02-10 23:28:41,417 INFO L129 PetriNetUnfolder]: 25/248 cut-off events. [2020-02-10 23:28:41,417 INFO L130 PetriNetUnfolder]: For 1627/1631 co-relation queries the response was YES. [2020-02-10 23:28:41,420 INFO L76 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 248 events. 25/248 cut-off events. For 1627/1631 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1958 event pairs. 0/229 useless extension candidates. Maximal degree in co-relation 929. Up to 50 conditions per place. [2020-02-10 23:28:41,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 40 transitions [2020-02-10 23:28:41,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 40 transitions [2020-02-10 23:28:41,426 INFO L479 AbstractCegarLoop]: Abstraction has has 96 places, 40 transitions [2020-02-10 23:28:41,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:41,463 INFO L129 PetriNetUnfolder]: 25/226 cut-off events. [2020-02-10 23:28:41,463 INFO L130 PetriNetUnfolder]: For 1627/1631 co-relation queries the response was YES. [2020-02-10 23:28:41,464 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:41,464 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:41,464 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:41,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:41,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1693423230, now seen corresponding path program 7 times [2020-02-10 23:28:41,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:41,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652592643] [2020-02-10 23:28:41,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:41,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652592643] [2020-02-10 23:28:41,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:41,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:41,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648815805] [2020-02-10 23:28:41,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:41,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:41,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:41,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:41,656 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:41,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 40 transitions. Second operand 7 states. [2020-02-10 23:28:41,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:41,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:41,659 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:41,850 INFO L129 PetriNetUnfolder]: 73/373 cut-off events. [2020-02-10 23:28:41,850 INFO L130 PetriNetUnfolder]: For 3264/3316 co-relation queries the response was YES. [2020-02-10 23:28:41,856 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 373 events. 73/373 cut-off events. For 3264/3316 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2924 event pairs. 3/360 useless extension candidates. Maximal degree in co-relation 1625. Up to 75 conditions per place. [2020-02-10 23:28:41,866 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 27 selfloop transitions, 10 changer transitions 2/51 dead transitions. [2020-02-10 23:28:41,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:41,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:41,868 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:41,868 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:41,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:41,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:41,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:41,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:41,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:41,871 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:41,871 INFO L178 Difference]: Start difference. First operand has 96 places, 40 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:41,874 INFO L206 Difference]: Finished difference. Result has 105 places, 41 transitions [2020-02-10 23:28:41,875 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=526, PETRI_PLACES=105, PETRI_TRANSITIONS=41} [2020-02-10 23:28:41,876 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 105 places, 41 transitions [2020-02-10 23:28:41,949 INFO L129 PetriNetUnfolder]: 26/260 cut-off events. [2020-02-10 23:28:41,950 INFO L130 PetriNetUnfolder]: For 2076/2078 co-relation queries the response was YES. [2020-02-10 23:28:41,953 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 260 events. 26/260 cut-off events. For 2076/2078 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2087 event pairs. 0/240 useless extension candidates. Maximal degree in co-relation 1030. Up to 52 conditions per place. [2020-02-10 23:28:41,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 41 transitions [2020-02-10 23:28:41,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 41 transitions [2020-02-10 23:28:41,959 INFO L479 AbstractCegarLoop]: Abstraction has has 104 places, 41 transitions [2020-02-10 23:28:41,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:42,001 INFO L129 PetriNetUnfolder]: 26/237 cut-off events. [2020-02-10 23:28:42,003 INFO L130 PetriNetUnfolder]: For 2076/2078 co-relation queries the response was YES. [2020-02-10 23:28:42,003 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:42,003 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:42,003 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:42,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:42,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1155567652, now seen corresponding path program 8 times [2020-02-10 23:28:42,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:42,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304499969] [2020-02-10 23:28:42,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:42,187 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 23:28:42,187 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304499969] [2020-02-10 23:28:42,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:42,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:42,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616677215] [2020-02-10 23:28:42,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:42,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:42,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:42,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:42,190 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:42,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 41 transitions. Second operand 7 states. [2020-02-10 23:28:42,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:42,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:42,191 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:42,374 INFO L129 PetriNetUnfolder]: 71/376 cut-off events. [2020-02-10 23:28:42,374 INFO L130 PetriNetUnfolder]: For 3986/4044 co-relation queries the response was YES. [2020-02-10 23:28:42,380 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1800 conditions, 376 events. 71/376 cut-off events. For 3986/4044 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2973 event pairs. 3/363 useless extension candidates. Maximal degree in co-relation 1744. Up to 67 conditions per place. [2020-02-10 23:28:42,390 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 25 selfloop transitions, 15 changer transitions 1/53 dead transitions. [2020-02-10 23:28:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:42,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:42,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:42,392 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:42,392 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:42,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:42,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:42,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:42,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:42,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:42,395 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:42,395 INFO L178 Difference]: Start difference. First operand has 104 places, 41 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:42,397 INFO L206 Difference]: Finished difference. Result has 114 places, 45 transitions [2020-02-10 23:28:42,397 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=647, PETRI_PLACES=114, PETRI_TRANSITIONS=45} [2020-02-10 23:28:42,397 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 114 places, 45 transitions [2020-02-10 23:28:42,454 INFO L129 PetriNetUnfolder]: 27/274 cut-off events. [2020-02-10 23:28:42,454 INFO L130 PetriNetUnfolder]: For 2792/2792 co-relation queries the response was YES. [2020-02-10 23:28:42,457 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 274 events. 27/274 cut-off events. For 2792/2792 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2239 event pairs. 0/252 useless extension candidates. Maximal degree in co-relation 1176. Up to 54 conditions per place. [2020-02-10 23:28:42,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 45 transitions [2020-02-10 23:28:42,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 45 transitions [2020-02-10 23:28:42,464 INFO L479 AbstractCegarLoop]: Abstraction has has 114 places, 45 transitions [2020-02-10 23:28:42,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:42,512 INFO L129 PetriNetUnfolder]: 27/250 cut-off events. [2020-02-10 23:28:42,513 INFO L130 PetriNetUnfolder]: For 2792/2792 co-relation queries the response was YES. [2020-02-10 23:28:42,513 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:42,513 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:42,513 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:42,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:42,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1409714770, now seen corresponding path program 9 times [2020-02-10 23:28:42,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:42,514 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787090977] [2020-02-10 23:28:42,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:42,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787090977] [2020-02-10 23:28:42,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:42,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:42,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213821736] [2020-02-10 23:28:42,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:42,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:42,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:42,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:42,693 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:42,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 45 transitions. Second operand 7 states. [2020-02-10 23:28:42,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:42,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:42,694 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:42,933 INFO L129 PetriNetUnfolder]: 78/433 cut-off events. [2020-02-10 23:28:42,933 INFO L130 PetriNetUnfolder]: For 5771/5859 co-relation queries the response was YES. [2020-02-10 23:28:42,939 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2205 conditions, 433 events. 78/433 cut-off events. For 5771/5859 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3649 event pairs. 2/421 useless extension candidates. Maximal degree in co-relation 2144. Up to 100 conditions per place. [2020-02-10 23:28:42,951 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 37 selfloop transitions, 16 changer transitions 1/66 dead transitions. [2020-02-10 23:28:42,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:42,953 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:42,953 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:42,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:42,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:42,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:42,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:42,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:42,957 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:42,957 INFO L178 Difference]: Start difference. First operand has 114 places, 45 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:42,958 INFO L206 Difference]: Finished difference. Result has 125 places, 50 transitions [2020-02-10 23:28:42,958 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=804, PETRI_PLACES=125, PETRI_TRANSITIONS=50} [2020-02-10 23:28:42,958 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 125 places, 50 transitions [2020-02-10 23:28:43,030 INFO L129 PetriNetUnfolder]: 31/318 cut-off events. [2020-02-10 23:28:43,031 INFO L130 PetriNetUnfolder]: For 4113/4114 co-relation queries the response was YES. [2020-02-10 23:28:43,035 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1534 conditions, 318 events. 31/318 cut-off events. For 4113/4114 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2748 event pairs. 0/295 useless extension candidates. Maximal degree in co-relation 1468. Up to 62 conditions per place. [2020-02-10 23:28:43,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 50 transitions [2020-02-10 23:28:43,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 50 transitions [2020-02-10 23:28:43,044 INFO L479 AbstractCegarLoop]: Abstraction has has 125 places, 50 transitions [2020-02-10 23:28:43,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:43,104 INFO L129 PetriNetUnfolder]: 31/290 cut-off events. [2020-02-10 23:28:43,105 INFO L130 PetriNetUnfolder]: For 4117/4123 co-relation queries the response was YES. [2020-02-10 23:28:43,105 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:43,105 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:43,105 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:43,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:43,106 INFO L82 PathProgramCache]: Analyzing trace with hash -519590378, now seen corresponding path program 10 times [2020-02-10 23:28:43,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:43,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16039368] [2020-02-10 23:28:43,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:43,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:43,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16039368] [2020-02-10 23:28:43,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:43,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:43,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062494820] [2020-02-10 23:28:43,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:43,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:43,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:43,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:43,357 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:43,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 50 transitions. Second operand 7 states. [2020-02-10 23:28:43,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:43,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:43,358 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:43,638 INFO L129 PetriNetUnfolder]: 78/432 cut-off events. [2020-02-10 23:28:43,638 INFO L130 PetriNetUnfolder]: For 6807/6875 co-relation queries the response was YES. [2020-02-10 23:28:43,645 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2333 conditions, 432 events. 78/432 cut-off events. For 6807/6875 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3645 event pairs. 3/418 useless extension candidates. Maximal degree in co-relation 2266. Up to 76 conditions per place. [2020-02-10 23:28:43,657 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 26 selfloop transitions, 20 changer transitions 1/59 dead transitions. [2020-02-10 23:28:43,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:43,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:43,659 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:43,659 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:43,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:43,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:43,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:43,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:43,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:43,661 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:43,661 INFO L178 Difference]: Start difference. First operand has 125 places, 50 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:43,662 INFO L206 Difference]: Finished difference. Result has 133 places, 51 transitions [2020-02-10 23:28:43,663 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=882, PETRI_PLACES=133, PETRI_TRANSITIONS=51} [2020-02-10 23:28:43,663 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 133 places, 51 transitions [2020-02-10 23:28:43,737 INFO L129 PetriNetUnfolder]: 31/317 cut-off events. [2020-02-10 23:28:43,737 INFO L130 PetriNetUnfolder]: For 4738/4744 co-relation queries the response was YES. [2020-02-10 23:28:43,742 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 317 events. 31/317 cut-off events. For 4738/4744 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2722 event pairs. 0/291 useless extension candidates. Maximal degree in co-relation 1535. Up to 62 conditions per place. [2020-02-10 23:28:43,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 51 transitions [2020-02-10 23:28:43,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 51 transitions [2020-02-10 23:28:43,750 INFO L479 AbstractCegarLoop]: Abstraction has has 133 places, 51 transitions [2020-02-10 23:28:43,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:43,810 INFO L129 PetriNetUnfolder]: 31/290 cut-off events. [2020-02-10 23:28:43,811 INFO L130 PetriNetUnfolder]: For 5346/5400 co-relation queries the response was YES. [2020-02-10 23:28:43,811 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:43,811 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:43,811 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:43,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:43,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1911630658, now seen corresponding path program 11 times [2020-02-10 23:28:43,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:43,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029385982] [2020-02-10 23:28:43,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:43,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029385982] [2020-02-10 23:28:43,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:43,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:43,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178803682] [2020-02-10 23:28:43,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:43,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:43,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:43,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:43,958 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:43,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 51 transitions. Second operand 7 states. [2020-02-10 23:28:43,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:43,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:43,958 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:44,219 INFO L129 PetriNetUnfolder]: 77/463 cut-off events. [2020-02-10 23:28:44,220 INFO L130 PetriNetUnfolder]: For 8277/8370 co-relation queries the response was YES. [2020-02-10 23:28:44,226 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2590 conditions, 463 events. 77/463 cut-off events. For 8277/8370 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4030 event pairs. 1/447 useless extension candidates. Maximal degree in co-relation 2520. Up to 86 conditions per place. [2020-02-10 23:28:44,245 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 32 selfloop transitions, 23 changer transitions 0/67 dead transitions. [2020-02-10 23:28:44,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:44,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:44,247 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:44,248 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:44,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:44,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:44,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:44,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:44,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:44,250 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:44,250 INFO L178 Difference]: Start difference. First operand has 133 places, 51 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:44,251 INFO L206 Difference]: Finished difference. Result has 143 places, 57 transitions [2020-02-10 23:28:44,252 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1087, PETRI_PLACES=143, PETRI_TRANSITIONS=57} [2020-02-10 23:28:44,252 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 143 places, 57 transitions [2020-02-10 23:28:44,346 INFO L129 PetriNetUnfolder]: 36/367 cut-off events. [2020-02-10 23:28:44,346 INFO L130 PetriNetUnfolder]: For 7130/7194 co-relation queries the response was YES. [2020-02-10 23:28:44,351 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1952 conditions, 367 events. 36/367 cut-off events. For 7130/7194 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3298 event pairs. 0/338 useless extension candidates. Maximal degree in co-relation 1878. Up to 72 conditions per place. [2020-02-10 23:28:44,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 57 transitions [2020-02-10 23:28:44,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 57 transitions [2020-02-10 23:28:44,360 INFO L479 AbstractCegarLoop]: Abstraction has has 143 places, 57 transitions [2020-02-10 23:28:44,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:44,424 INFO L129 PetriNetUnfolder]: 36/336 cut-off events. [2020-02-10 23:28:44,424 INFO L130 PetriNetUnfolder]: For 7139/7207 co-relation queries the response was YES. [2020-02-10 23:28:44,424 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:44,425 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:44,425 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:44,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:44,425 INFO L82 PathProgramCache]: Analyzing trace with hash -330089334, now seen corresponding path program 12 times [2020-02-10 23:28:44,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:44,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840691954] [2020-02-10 23:28:44,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:44,602 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840691954] [2020-02-10 23:28:44,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:44,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:44,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683865093] [2020-02-10 23:28:44,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:44,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:44,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:44,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:44,604 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:44,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 57 transitions. Second operand 7 states. [2020-02-10 23:28:44,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:44,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:44,605 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:44,980 INFO L129 PetriNetUnfolder]: 76/562 cut-off events. [2020-02-10 23:28:44,980 INFO L130 PetriNetUnfolder]: For 12327/12405 co-relation queries the response was YES. [2020-02-10 23:28:44,985 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3335 conditions, 562 events. 76/562 cut-off events. For 12327/12405 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5323 event pairs. 2/543 useless extension candidates. Maximal degree in co-relation 3260. Up to 125 conditions per place. [2020-02-10 23:28:44,997 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 61 selfloop transitions, 28 changer transitions 1/102 dead transitions. [2020-02-10 23:28:44,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:44,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:44,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:44,999 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:44,999 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:44,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:45,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:45,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:45,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:45,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:45,002 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:45,002 INFO L178 Difference]: Start difference. First operand has 143 places, 57 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:45,004 INFO L206 Difference]: Finished difference. Result has 154 places, 72 transitions [2020-02-10 23:28:45,004 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1613, PETRI_PLACES=154, PETRI_TRANSITIONS=72} [2020-02-10 23:28:45,004 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 154 places, 72 transitions [2020-02-10 23:28:45,170 INFO L129 PetriNetUnfolder]: 48/505 cut-off events. [2020-02-10 23:28:45,170 INFO L130 PetriNetUnfolder]: For 12113/12215 co-relation queries the response was YES. [2020-02-10 23:28:45,175 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2859 conditions, 505 events. 48/505 cut-off events. For 12113/12215 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5017 event pairs. 0/479 useless extension candidates. Maximal degree in co-relation 2779. Up to 96 conditions per place. [2020-02-10 23:28:45,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 72 transitions [2020-02-10 23:28:45,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 72 transitions [2020-02-10 23:28:45,184 INFO L479 AbstractCegarLoop]: Abstraction has has 154 places, 72 transitions [2020-02-10 23:28:45,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:45,265 INFO L129 PetriNetUnfolder]: 48/460 cut-off events. [2020-02-10 23:28:45,266 INFO L130 PetriNetUnfolder]: For 12113/12215 co-relation queries the response was YES. [2020-02-10 23:28:45,266 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:45,266 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:45,266 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:45,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:45,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1564863456, now seen corresponding path program 13 times [2020-02-10 23:28:45,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:45,267 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129565714] [2020-02-10 23:28:45,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:45,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129565714] [2020-02-10 23:28:45,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:45,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:45,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088043701] [2020-02-10 23:28:45,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:45,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:45,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:45,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:45,458 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:45,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 72 transitions. Second operand 7 states. [2020-02-10 23:28:45,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:45,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:45,459 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:45,865 INFO L129 PetriNetUnfolder]: 76/561 cut-off events. [2020-02-10 23:28:45,865 INFO L130 PetriNetUnfolder]: For 14376/14448 co-relation queries the response was YES. [2020-02-10 23:28:45,876 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 561 events. 76/561 cut-off events. For 14376/14448 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5304 event pairs. 1/542 useless extension candidates. Maximal degree in co-relation 3440. Up to 125 conditions per place. [2020-02-10 23:28:45,891 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 62 selfloop transitions, 24 changer transitions 4/102 dead transitions. [2020-02-10 23:28:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:45,893 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:45,893 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:45,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:45,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:45,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:45,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:45,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:45,896 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:45,896 INFO L178 Difference]: Start difference. First operand has 154 places, 72 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:45,897 INFO L206 Difference]: Finished difference. Result has 162 places, 70 transitions [2020-02-10 23:28:45,898 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1612, PETRI_PLACES=162, PETRI_TRANSITIONS=70} [2020-02-10 23:28:45,898 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 162 places, 70 transitions [2020-02-10 23:28:46,034 INFO L129 PetriNetUnfolder]: 46/489 cut-off events. [2020-02-10 23:28:46,035 INFO L130 PetriNetUnfolder]: For 13036/13138 co-relation queries the response was YES. [2020-02-10 23:28:46,039 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2887 conditions, 489 events. 46/489 cut-off events. For 13036/13138 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4803 event pairs. 0/463 useless extension candidates. Maximal degree in co-relation 2804. Up to 92 conditions per place. [2020-02-10 23:28:46,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 70 transitions [2020-02-10 23:28:46,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 70 transitions [2020-02-10 23:28:46,051 INFO L479 AbstractCegarLoop]: Abstraction has has 160 places, 70 transitions [2020-02-10 23:28:46,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:46,194 INFO L129 PetriNetUnfolder]: 46/445 cut-off events. [2020-02-10 23:28:46,194 INFO L130 PetriNetUnfolder]: For 13088/13191 co-relation queries the response was YES. [2020-02-10 23:28:46,194 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:46,194 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:46,195 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:46,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:46,195 INFO L82 PathProgramCache]: Analyzing trace with hash -2054953756, now seen corresponding path program 14 times [2020-02-10 23:28:46,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:46,196 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947294274] [2020-02-10 23:28:46,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:46,357 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 23:28:46,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947294274] [2020-02-10 23:28:46,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:46,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:46,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369094235] [2020-02-10 23:28:46,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:46,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:46,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:46,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:46,361 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:46,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 70 transitions. Second operand 7 states. [2020-02-10 23:28:46,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:46,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:46,362 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:46,764 INFO L129 PetriNetUnfolder]: 86/661 cut-off events. [2020-02-10 23:28:46,764 INFO L130 PetriNetUnfolder]: For 17596/17668 co-relation queries the response was YES. [2020-02-10 23:28:46,771 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4149 conditions, 661 events. 86/661 cut-off events. For 17596/17668 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6630 event pairs. 1/646 useless extension candidates. Maximal degree in co-relation 4065. Up to 120 conditions per place. [2020-02-10 23:28:46,788 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 41 selfloop transitions, 35 changer transitions 0/88 dead transitions. [2020-02-10 23:28:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:46,791 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:46,791 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:46,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:46,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:46,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:46,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:46,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:46,793 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:46,793 INFO L178 Difference]: Start difference. First operand has 160 places, 70 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:46,795 INFO L206 Difference]: Finished difference. Result has 171 places, 77 transitions [2020-02-10 23:28:46,795 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1901, PETRI_PLACES=171, PETRI_TRANSITIONS=77} [2020-02-10 23:28:46,795 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 171 places, 77 transitions [2020-02-10 23:28:47,014 INFO L129 PetriNetUnfolder]: 54/577 cut-off events. [2020-02-10 23:28:47,015 INFO L130 PetriNetUnfolder]: For 17945/18088 co-relation queries the response was YES. [2020-02-10 23:28:47,020 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3574 conditions, 577 events. 54/577 cut-off events. For 17945/18088 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5922 event pairs. 1/553 useless extension candidates. Maximal degree in co-relation 3485. Up to 108 conditions per place. [2020-02-10 23:28:47,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 77 transitions [2020-02-10 23:28:47,029 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 77 transitions [2020-02-10 23:28:47,030 INFO L479 AbstractCegarLoop]: Abstraction has has 171 places, 77 transitions [2020-02-10 23:28:47,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:47,127 INFO L129 PetriNetUnfolder]: 54/525 cut-off events. [2020-02-10 23:28:47,127 INFO L130 PetriNetUnfolder]: For 17945/18088 co-relation queries the response was YES. [2020-02-10 23:28:47,128 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:47,128 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:47,128 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:47,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:47,128 INFO L82 PathProgramCache]: Analyzing trace with hash -400291626, now seen corresponding path program 15 times [2020-02-10 23:28:47,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:47,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507620907] [2020-02-10 23:28:47,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:47,275 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507620907] [2020-02-10 23:28:47,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:47,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:47,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717769832] [2020-02-10 23:28:47,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:47,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:47,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:47,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:47,276 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:47,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 77 transitions. Second operand 7 states. [2020-02-10 23:28:47,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:47,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:47,277 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:47,677 INFO L129 PetriNetUnfolder]: 85/710 cut-off events. [2020-02-10 23:28:47,677 INFO L130 PetriNetUnfolder]: For 22749/22827 co-relation queries the response was YES. [2020-02-10 23:28:47,688 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4803 conditions, 710 events. 85/710 cut-off events. For 22749/22827 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7287 event pairs. 1/692 useless extension candidates. Maximal degree in co-relation 4713. Up to 144 conditions per place. [2020-02-10 23:28:47,705 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 68 selfloop transitions, 36 changer transitions 1/117 dead transitions. [2020-02-10 23:28:47,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:47,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:47,745 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:47,745 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:47,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:47,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:47,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:47,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:47,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:47,748 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:47,748 INFO L178 Difference]: Start difference. First operand has 171 places, 77 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:47,750 INFO L206 Difference]: Finished difference. Result has 182 places, 91 transitions [2020-02-10 23:28:47,750 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2427, PETRI_PLACES=182, PETRI_TRANSITIONS=91} [2020-02-10 23:28:47,750 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 182 places, 91 transitions [2020-02-10 23:28:47,939 INFO L129 PetriNetUnfolder]: 61/657 cut-off events. [2020-02-10 23:28:47,939 INFO L130 PetriNetUnfolder]: For 23648/23825 co-relation queries the response was YES. [2020-02-10 23:28:47,947 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4268 conditions, 657 events. 61/657 cut-off events. For 23648/23825 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6974 event pairs. 2/634 useless extension candidates. Maximal degree in co-relation 4173. Up to 122 conditions per place. [2020-02-10 23:28:47,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 91 transitions [2020-02-10 23:28:47,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 91 transitions [2020-02-10 23:28:47,959 INFO L479 AbstractCegarLoop]: Abstraction has has 182 places, 91 transitions [2020-02-10 23:28:47,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:48,082 INFO L129 PetriNetUnfolder]: 61/597 cut-off events. [2020-02-10 23:28:48,082 INFO L130 PetriNetUnfolder]: For 23395/23559 co-relation queries the response was YES. [2020-02-10 23:28:48,082 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:48,082 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:48,083 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:48,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:48,083 INFO L82 PathProgramCache]: Analyzing trace with hash -794259292, now seen corresponding path program 16 times [2020-02-10 23:28:48,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:48,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030881936] [2020-02-10 23:28:48,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:48,236 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 23:28:48,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030881936] [2020-02-10 23:28:48,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:48,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:48,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776211352] [2020-02-10 23:28:48,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:48,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:48,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:48,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:48,239 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:48,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 91 transitions. Second operand 7 states. [2020-02-10 23:28:48,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:48,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:48,240 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:48,706 INFO L129 PetriNetUnfolder]: 84/778 cut-off events. [2020-02-10 23:28:48,706 INFO L130 PetriNetUnfolder]: For 27677/27801 co-relation queries the response was YES. [2020-02-10 23:28:48,716 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5397 conditions, 778 events. 84/778 cut-off events. For 27677/27801 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8327 event pairs. 2/763 useless extension candidates. Maximal degree in co-relation 5301. Up to 138 conditions per place. [2020-02-10 23:28:48,732 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 67 selfloop transitions, 35 changer transitions 2/116 dead transitions. [2020-02-10 23:28:48,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:48,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:48,733 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:48,734 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:48,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:48,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:48,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:48,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:48,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:48,736 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:48,736 INFO L178 Difference]: Start difference. First operand has 182 places, 91 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:48,737 INFO L206 Difference]: Finished difference. Result has 193 places, 98 transitions [2020-02-10 23:28:48,738 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2427, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2770, PETRI_PLACES=193, PETRI_TRANSITIONS=98} [2020-02-10 23:28:48,738 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 193 places, 98 transitions [2020-02-10 23:28:48,959 INFO L129 PetriNetUnfolder]: 66/727 cut-off events. [2020-02-10 23:28:48,959 INFO L130 PetriNetUnfolder]: For 29572/29744 co-relation queries the response was YES. [2020-02-10 23:28:48,968 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5003 conditions, 727 events. 66/727 cut-off events. For 29572/29744 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7863 event pairs. 1/702 useless extension candidates. Maximal degree in co-relation 4902. Up to 132 conditions per place. [2020-02-10 23:28:48,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 98 transitions [2020-02-10 23:28:48,981 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 98 transitions [2020-02-10 23:28:48,982 INFO L479 AbstractCegarLoop]: Abstraction has has 192 places, 98 transitions [2020-02-10 23:28:48,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:49,146 INFO L129 PetriNetUnfolder]: 66/659 cut-off events. [2020-02-10 23:28:49,146 INFO L130 PetriNetUnfolder]: For 28555/28625 co-relation queries the response was YES. [2020-02-10 23:28:49,146 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:49,146 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:49,146 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:49,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:49,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1922503392, now seen corresponding path program 17 times [2020-02-10 23:28:49,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:49,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865245689] [2020-02-10 23:28:49,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:49,298 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 23:28:49,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865245689] [2020-02-10 23:28:49,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:49,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:49,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018645565] [2020-02-10 23:28:49,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:49,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:49,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:49,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:49,300 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:49,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 98 transitions. Second operand 7 states. [2020-02-10 23:28:49,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:49,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:49,301 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:49,789 INFO L129 PetriNetUnfolder]: 84/773 cut-off events. [2020-02-10 23:28:49,790 INFO L130 PetriNetUnfolder]: For 31046/31114 co-relation queries the response was YES. [2020-02-10 23:28:49,800 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5626 conditions, 773 events. 84/773 cut-off events. For 31046/31114 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8279 event pairs. 3/760 useless extension candidates. Maximal degree in co-relation 5524. Up to 157 conditions per place. [2020-02-10 23:28:49,815 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 68 selfloop transitions, 33 changer transitions 2/115 dead transitions. [2020-02-10 23:28:49,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:49,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:49,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:49,817 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:49,817 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:49,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:49,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:49,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:49,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:49,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:49,819 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:49,819 INFO L178 Difference]: Start difference. First operand has 192 places, 98 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:49,820 INFO L206 Difference]: Finished difference. Result has 199 places, 96 transitions [2020-02-10 23:28:49,821 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2770, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2763, PETRI_PLACES=199, PETRI_TRANSITIONS=96} [2020-02-10 23:28:49,821 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 199 places, 96 transitions [2020-02-10 23:28:50,071 INFO L129 PetriNetUnfolder]: 65/716 cut-off events. [2020-02-10 23:28:50,071 INFO L130 PetriNetUnfolder]: For 31317/31522 co-relation queries the response was YES. [2020-02-10 23:28:50,080 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5087 conditions, 716 events. 65/716 cut-off events. For 31317/31522 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7724 event pairs. 1/689 useless extension candidates. Maximal degree in co-relation 4984. Up to 130 conditions per place. [2020-02-10 23:28:50,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 96 transitions [2020-02-10 23:28:50,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 96 transitions [2020-02-10 23:28:50,093 INFO L479 AbstractCegarLoop]: Abstraction has has 197 places, 96 transitions [2020-02-10 23:28:50,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:50,243 INFO L129 PetriNetUnfolder]: 65/649 cut-off events. [2020-02-10 23:28:50,244 INFO L130 PetriNetUnfolder]: For 31317/31522 co-relation queries the response was YES. [2020-02-10 23:28:50,244 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:50,244 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:50,244 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:50,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:50,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1013760902, now seen corresponding path program 18 times [2020-02-10 23:28:50,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:50,245 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352956507] [2020-02-10 23:28:50,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:50,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:50,412 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352956507] [2020-02-10 23:28:50,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:50,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:50,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100341172] [2020-02-10 23:28:50,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:50,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:50,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:50,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:50,414 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:50,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 96 transitions. Second operand 7 states. [2020-02-10 23:28:50,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:50,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:50,414 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:51,041 INFO L129 PetriNetUnfolder]: 80/751 cut-off events. [2020-02-10 23:28:51,042 INFO L130 PetriNetUnfolder]: For 32863/32953 co-relation queries the response was YES. [2020-02-10 23:28:51,054 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5688 conditions, 751 events. 80/751 cut-off events. For 32863/32953 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7989 event pairs. 3/738 useless extension candidates. Maximal degree in co-relation 5584. Up to 142 conditions per place. [2020-02-10 23:28:51,131 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 41 changer transitions 1/129 dead transitions. [2020-02-10 23:28:51,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:51,132 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:51,132 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:51,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:51,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:51,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:51,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:51,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:51,134 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:51,134 INFO L178 Difference]: Start difference. First operand has 197 places, 96 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:51,135 INFO L206 Difference]: Finished difference. Result has 208 places, 104 transitions [2020-02-10 23:28:51,135 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3174, PETRI_PLACES=208, PETRI_TRANSITIONS=104} [2020-02-10 23:28:51,135 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 208 places, 104 transitions [2020-02-10 23:28:51,386 INFO L129 PetriNetUnfolder]: 65/714 cut-off events. [2020-02-10 23:28:51,387 INFO L130 PetriNetUnfolder]: For 34315/34511 co-relation queries the response was YES. [2020-02-10 23:28:51,396 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5291 conditions, 714 events. 65/714 cut-off events. For 34315/34511 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7670 event pairs. 2/689 useless extension candidates. Maximal degree in co-relation 5182. Up to 130 conditions per place. [2020-02-10 23:28:51,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 104 transitions [2020-02-10 23:28:51,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 104 transitions [2020-02-10 23:28:51,411 INFO L479 AbstractCegarLoop]: Abstraction has has 208 places, 104 transitions [2020-02-10 23:28:51,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:51,572 INFO L129 PetriNetUnfolder]: 65/648 cut-off events. [2020-02-10 23:28:51,573 INFO L130 PetriNetUnfolder]: For 33121/33170 co-relation queries the response was YES. [2020-02-10 23:28:51,573 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:51,573 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:51,573 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:51,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:51,573 INFO L82 PathProgramCache]: Analyzing trace with hash 757726374, now seen corresponding path program 19 times [2020-02-10 23:28:51,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:51,574 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871225416] [2020-02-10 23:28:51,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:51,729 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 23:28:51,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871225416] [2020-02-10 23:28:51,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:51,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:51,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131270323] [2020-02-10 23:28:51,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:51,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:51,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:51,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:51,732 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:51,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 104 transitions. Second operand 7 states. [2020-02-10 23:28:51,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:51,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:51,732 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:52,616 INFO L129 PetriNetUnfolder]: 86/847 cut-off events. [2020-02-10 23:28:52,616 INFO L130 PetriNetUnfolder]: For 41721/41819 co-relation queries the response was YES. [2020-02-10 23:28:52,629 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6667 conditions, 847 events. 86/847 cut-off events. For 41721/41819 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9319 event pairs. 1/829 useless extension candidates. Maximal degree in co-relation 6557. Up to 167 conditions per place. [2020-02-10 23:28:52,647 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 87 selfloop transitions, 44 changer transitions 1/144 dead transitions. [2020-02-10 23:28:52,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:52,648 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:52,648 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:52,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:52,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:52,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:52,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:52,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:52,650 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:52,650 INFO L178 Difference]: Start difference. First operand has 208 places, 104 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:52,652 INFO L206 Difference]: Finished difference. Result has 219 places, 119 transitions [2020-02-10 23:28:52,652 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3174, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3874, PETRI_PLACES=219, PETRI_TRANSITIONS=119} [2020-02-10 23:28:52,652 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 219 places, 119 transitions [2020-02-10 23:28:52,991 INFO L129 PetriNetUnfolder]: 75/823 cut-off events. [2020-02-10 23:28:52,992 INFO L130 PetriNetUnfolder]: For 43030/43067 co-relation queries the response was YES. [2020-02-10 23:28:53,005 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6381 conditions, 823 events. 75/823 cut-off events. For 43030/43067 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9187 event pairs. 3/803 useless extension candidates. Maximal degree in co-relation 6266. Up to 150 conditions per place. [2020-02-10 23:28:53,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 119 transitions [2020-02-10 23:28:53,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 119 transitions [2020-02-10 23:28:53,023 INFO L479 AbstractCegarLoop]: Abstraction has has 219 places, 119 transitions [2020-02-10 23:28:53,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:53,242 INFO L129 PetriNetUnfolder]: 75/747 cut-off events. [2020-02-10 23:28:53,243 INFO L130 PetriNetUnfolder]: For 42989/43030 co-relation queries the response was YES. [2020-02-10 23:28:53,243 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:53,243 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:53,243 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:53,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:53,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1474304834, now seen corresponding path program 20 times [2020-02-10 23:28:53,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:53,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130899143] [2020-02-10 23:28:53,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:53,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:53,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130899143] [2020-02-10 23:28:53,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:53,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:53,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057888418] [2020-02-10 23:28:53,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:53,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:53,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:53,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:53,419 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:53,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 119 transitions. Second operand 7 states. [2020-02-10 23:28:53,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:53,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:53,420 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:54,448 INFO L129 PetriNetUnfolder]: 92/994 cut-off events. [2020-02-10 23:28:54,448 INFO L130 PetriNetUnfolder]: For 54159/54257 co-relation queries the response was YES. [2020-02-10 23:28:54,463 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8043 conditions, 994 events. 92/994 cut-off events. For 54159/54257 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11561 event pairs. 1/974 useless extension candidates. Maximal degree in co-relation 7927. Up to 180 conditions per place. [2020-02-10 23:28:54,491 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 91 selfloop transitions, 59 changer transitions 1/163 dead transitions. [2020-02-10 23:28:54,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:54,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:54,492 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:54,493 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:54,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:54,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:54,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:54,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:54,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:54,494 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:54,494 INFO L178 Difference]: Start difference. First operand has 219 places, 119 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:54,497 INFO L206 Difference]: Finished difference. Result has 230 places, 142 transitions [2020-02-10 23:28:54,497 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3874, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4912, PETRI_PLACES=230, PETRI_TRANSITIONS=142} [2020-02-10 23:28:54,497 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 230 places, 142 transitions [2020-02-10 23:28:55,039 INFO L129 PetriNetUnfolder]: 89/983 cut-off events. [2020-02-10 23:28:55,039 INFO L130 PetriNetUnfolder]: For 56962/56981 co-relation queries the response was YES. [2020-02-10 23:28:55,054 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7943 conditions, 983 events. 89/983 cut-off events. For 56962/56981 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11512 event pairs. 2/966 useless extension candidates. Maximal degree in co-relation 7822. Up to 178 conditions per place. [2020-02-10 23:28:55,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 142 transitions [2020-02-10 23:28:55,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 142 transitions [2020-02-10 23:28:55,076 INFO L479 AbstractCegarLoop]: Abstraction has has 230 places, 142 transitions [2020-02-10 23:28:55,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:55,365 INFO L129 PetriNetUnfolder]: 89/891 cut-off events. [2020-02-10 23:28:55,365 INFO L130 PetriNetUnfolder]: For 56912/56921 co-relation queries the response was YES. [2020-02-10 23:28:55,365 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:55,365 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:55,366 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:55,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:55,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1340903844, now seen corresponding path program 21 times [2020-02-10 23:28:55,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:55,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254656810] [2020-02-10 23:28:55,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:55,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:55,537 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254656810] [2020-02-10 23:28:55,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:55,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:55,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039715774] [2020-02-10 23:28:55,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:55,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:55,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:55,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:55,539 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:55,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 142 transitions. Second operand 7 states. [2020-02-10 23:28:55,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:55,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:55,540 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:56,619 INFO L129 PetriNetUnfolder]: 91/988 cut-off events. [2020-02-10 23:28:56,620 INFO L130 PetriNetUnfolder]: For 59490/59594 co-relation queries the response was YES. [2020-02-10 23:28:56,637 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8334 conditions, 988 events. 91/988 cut-off events. For 59490/59594 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11446 event pairs. 1/970 useless extension candidates. Maximal degree in co-relation 8212. Up to 186 conditions per place. [2020-02-10 23:28:56,660 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 99 selfloop transitions, 44 changer transitions 2/157 dead transitions. [2020-02-10 23:28:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:56,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:56,662 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:56,662 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:56,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:56,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:56,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:56,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:56,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:56,663 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:56,664 INFO L178 Difference]: Start difference. First operand has 230 places, 142 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:56,666 INFO L206 Difference]: Finished difference. Result has 238 places, 143 transitions [2020-02-10 23:28:56,667 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4912, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5070, PETRI_PLACES=238, PETRI_TRANSITIONS=143} [2020-02-10 23:28:56,667 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 238 places, 143 transitions [2020-02-10 23:28:57,208 INFO L129 PetriNetUnfolder]: 88/973 cut-off events. [2020-02-10 23:28:57,208 INFO L130 PetriNetUnfolder]: For 60337/60346 co-relation queries the response was YES. [2020-02-10 23:28:57,224 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8095 conditions, 973 events. 88/973 cut-off events. For 60337/60346 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11361 event pairs. 1/957 useless extension candidates. Maximal degree in co-relation 7971. Up to 176 conditions per place. [2020-02-10 23:28:57,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 143 transitions [2020-02-10 23:28:57,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 143 transitions [2020-02-10 23:28:57,247 INFO L479 AbstractCegarLoop]: Abstraction has has 236 places, 143 transitions [2020-02-10 23:28:57,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:57,615 INFO L129 PetriNetUnfolder]: 88/882 cut-off events. [2020-02-10 23:28:57,615 INFO L130 PetriNetUnfolder]: For 60337/60346 co-relation queries the response was YES. [2020-02-10 23:28:57,615 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:57,615 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:57,615 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:57,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:57,616 INFO L82 PathProgramCache]: Analyzing trace with hash -375332914, now seen corresponding path program 22 times [2020-02-10 23:28:57,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:57,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209088234] [2020-02-10 23:28:57,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:57,772 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 23:28:57,773 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209088234] [2020-02-10 23:28:57,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:57,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:28:57,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281633731] [2020-02-10 23:28:57,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:28:57,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:57,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:28:57,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:28:57,775 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:28:57,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 143 transitions. Second operand 7 states. [2020-02-10 23:28:57,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:57,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:28:57,775 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:58,816 INFO L129 PetriNetUnfolder]: 90/978 cut-off events. [2020-02-10 23:28:58,817 INFO L130 PetriNetUnfolder]: For 63313/63483 co-relation queries the response was YES. [2020-02-10 23:28:58,833 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8482 conditions, 978 events. 90/978 cut-off events. For 63313/63483 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11290 event pairs. 2/960 useless extension candidates. Maximal degree in co-relation 8357. Up to 181 conditions per place. [2020-02-10 23:28:58,858 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 90 selfloop transitions, 59 changer transitions 0/161 dead transitions. [2020-02-10 23:28:58,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:28:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:28:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:28:58,859 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:28:58,859 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:28:58,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:28:58,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:58,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:28:58,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:28:58,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:28:58,861 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:28:58,861 INFO L178 Difference]: Start difference. First operand has 236 places, 143 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:28:58,864 INFO L206 Difference]: Finished difference. Result has 246 places, 154 transitions [2020-02-10 23:28:58,865 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=5070, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5693, PETRI_PLACES=246, PETRI_TRANSITIONS=154} [2020-02-10 23:28:58,865 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 246 places, 154 transitions [2020-02-10 23:28:59,628 INFO L129 PetriNetUnfolder]: 88/972 cut-off events. [2020-02-10 23:28:59,628 INFO L130 PetriNetUnfolder]: For 66195/66207 co-relation queries the response was YES. [2020-02-10 23:28:59,642 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8382 conditions, 972 events. 88/972 cut-off events. For 66195/66207 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11327 event pairs. 1/956 useless extension candidates. Maximal degree in co-relation 8253. Up to 176 conditions per place. [2020-02-10 23:28:59,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 154 transitions [2020-02-10 23:28:59,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 154 transitions [2020-02-10 23:28:59,664 INFO L479 AbstractCegarLoop]: Abstraction has has 246 places, 154 transitions [2020-02-10 23:28:59,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:28:59,983 INFO L129 PetriNetUnfolder]: 88/882 cut-off events. [2020-02-10 23:28:59,983 INFO L130 PetriNetUnfolder]: For 66810/66882 co-relation queries the response was YES. [2020-02-10 23:28:59,983 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:59,983 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:59,983 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:59,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:59,983 INFO L82 PathProgramCache]: Analyzing trace with hash 697752466, now seen corresponding path program 23 times [2020-02-10 23:28:59,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:59,984 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577552334] [2020-02-10 23:28:59,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:00,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:00,140 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577552334] [2020-02-10 23:29:00,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:00,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:00,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328330896] [2020-02-10 23:29:00,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:00,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:00,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:00,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:00,142 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:00,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 154 transitions. Second operand 7 states. [2020-02-10 23:29:00,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:00,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:00,143 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:01,185 INFO L129 PetriNetUnfolder]: 90/977 cut-off events. [2020-02-10 23:29:01,186 INFO L130 PetriNetUnfolder]: For 70930/71383 co-relation queries the response was YES. [2020-02-10 23:29:01,200 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8767 conditions, 977 events. 90/977 cut-off events. For 70930/71383 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11269 event pairs. 3/958 useless extension candidates. Maximal degree in co-relation 8637. Up to 182 conditions per place. [2020-02-10 23:29:01,222 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 77 selfloop transitions, 70 changer transitions 0/159 dead transitions. [2020-02-10 23:29:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:01,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:01,223 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:01,224 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:01,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:01,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:01,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:01,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:01,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:01,225 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:01,225 INFO L178 Difference]: Start difference. First operand has 246 places, 154 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:01,227 INFO L206 Difference]: Finished difference. Result has 254 places, 156 transitions [2020-02-10 23:29:01,227 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=5693, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5945, PETRI_PLACES=254, PETRI_TRANSITIONS=156} [2020-02-10 23:29:01,227 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 254 places, 156 transitions [2020-02-10 23:29:01,838 INFO L129 PetriNetUnfolder]: 88/971 cut-off events. [2020-02-10 23:29:01,839 INFO L130 PetriNetUnfolder]: For 70371/70430 co-relation queries the response was YES. [2020-02-10 23:29:01,855 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8581 conditions, 971 events. 88/971 cut-off events. For 70371/70430 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11310 event pairs. 1/951 useless extension candidates. Maximal degree in co-relation 8449. Up to 176 conditions per place. [2020-02-10 23:29:01,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 156 transitions [2020-02-10 23:29:01,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 156 transitions [2020-02-10 23:29:01,880 INFO L479 AbstractCegarLoop]: Abstraction has has 254 places, 156 transitions [2020-02-10 23:29:01,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:02,201 INFO L129 PetriNetUnfolder]: 88/882 cut-off events. [2020-02-10 23:29:02,202 INFO L130 PetriNetUnfolder]: For 70371/70430 co-relation queries the response was YES. [2020-02-10 23:29:02,202 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:02,202 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:02,202 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:02,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:02,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1584908990, now seen corresponding path program 24 times [2020-02-10 23:29:02,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:02,203 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449754394] [2020-02-10 23:29:02,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:02,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449754394] [2020-02-10 23:29:02,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:02,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:02,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436248052] [2020-02-10 23:29:02,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:02,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:02,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:02,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:02,369 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:02,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 156 transitions. Second operand 7 states. [2020-02-10 23:29:02,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:02,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:02,370 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:03,466 INFO L129 PetriNetUnfolder]: 90/991 cut-off events. [2020-02-10 23:29:03,466 INFO L130 PetriNetUnfolder]: For 75834/76255 co-relation queries the response was YES. [2020-02-10 23:29:03,484 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9113 conditions, 991 events. 90/991 cut-off events. For 75834/76255 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11511 event pairs. 9/978 useless extension candidates. Maximal degree in co-relation 8980. Up to 180 conditions per place. [2020-02-10 23:29:03,510 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 96 selfloop transitions, 71 changer transitions 0/179 dead transitions. [2020-02-10 23:29:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:03,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:03,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:03,511 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:03,512 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:03,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:03,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:03,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:03,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:03,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:03,513 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:03,513 INFO L178 Difference]: Start difference. First operand has 254 places, 156 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:03,517 INFO L206 Difference]: Finished difference. Result has 264 places, 167 transitions [2020-02-10 23:29:03,517 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=5945, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6615, PETRI_PLACES=264, PETRI_TRANSITIONS=167} [2020-02-10 23:29:03,517 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 264 places, 167 transitions [2020-02-10 23:29:04,198 INFO L129 PetriNetUnfolder]: 89/988 cut-off events. [2020-02-10 23:29:04,198 INFO L130 PetriNetUnfolder]: For 76504/76560 co-relation queries the response was YES. [2020-02-10 23:29:04,216 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8982 conditions, 988 events. 89/988 cut-off events. For 76504/76560 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11562 event pairs. 0/968 useless extension candidates. Maximal degree in co-relation 8845. Up to 178 conditions per place. [2020-02-10 23:29:04,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 167 transitions [2020-02-10 23:29:04,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 167 transitions [2020-02-10 23:29:04,242 INFO L479 AbstractCegarLoop]: Abstraction has has 264 places, 167 transitions [2020-02-10 23:29:04,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:04,594 INFO L129 PetriNetUnfolder]: 89/898 cut-off events. [2020-02-10 23:29:04,594 INFO L130 PetriNetUnfolder]: For 76926/77026 co-relation queries the response was YES. [2020-02-10 23:29:04,594 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:04,594 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:04,595 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:04,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:04,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1819494330, now seen corresponding path program 25 times [2020-02-10 23:29:04,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:04,595 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845328221] [2020-02-10 23:29:04,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:04,757 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 23:29:04,758 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845328221] [2020-02-10 23:29:04,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:04,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:04,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306451601] [2020-02-10 23:29:04,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:04,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:04,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:04,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:04,759 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:04,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 167 transitions. Second operand 7 states. [2020-02-10 23:29:04,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:04,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:04,760 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:05,913 INFO L129 PetriNetUnfolder]: 90/990 cut-off events. [2020-02-10 23:29:05,913 INFO L130 PetriNetUnfolder]: For 80026/80260 co-relation queries the response was YES. [2020-02-10 23:29:05,931 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9353 conditions, 990 events. 90/990 cut-off events. For 80026/80260 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11495 event pairs. 1/971 useless extension candidates. Maximal degree in co-relation 9215. Up to 180 conditions per place. [2020-02-10 23:29:05,958 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 106 selfloop transitions, 59 changer transitions 0/177 dead transitions. [2020-02-10 23:29:05,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:05,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:05,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:05,959 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:05,959 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:05,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:05,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:05,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:05,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:05,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:05,960 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:05,961 INFO L178 Difference]: Start difference. First operand has 264 places, 167 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:05,964 INFO L206 Difference]: Finished difference. Result has 272 places, 171 transitions [2020-02-10 23:29:05,964 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=6615, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6895, PETRI_PLACES=272, PETRI_TRANSITIONS=171} [2020-02-10 23:29:05,964 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 272 places, 171 transitions [2020-02-10 23:29:06,658 INFO L129 PetriNetUnfolder]: 89/987 cut-off events. [2020-02-10 23:29:06,658 INFO L130 PetriNetUnfolder]: For 81988/82088 co-relation queries the response was YES. [2020-02-10 23:29:06,676 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9193 conditions, 987 events. 89/987 cut-off events. For 81988/82088 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11587 event pairs. 2/969 useless extension candidates. Maximal degree in co-relation 9053. Up to 178 conditions per place. [2020-02-10 23:29:06,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 171 transitions [2020-02-10 23:29:06,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 171 transitions [2020-02-10 23:29:06,702 INFO L479 AbstractCegarLoop]: Abstraction has has 272 places, 171 transitions [2020-02-10 23:29:06,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:07,099 INFO L129 PetriNetUnfolder]: 89/898 cut-off events. [2020-02-10 23:29:07,099 INFO L130 PetriNetUnfolder]: For 81544/81600 co-relation queries the response was YES. [2020-02-10 23:29:07,099 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:07,100 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:07,100 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:07,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:07,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1517526880, now seen corresponding path program 26 times [2020-02-10 23:29:07,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:07,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108533703] [2020-02-10 23:29:07,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:07,290 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 23:29:07,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108533703] [2020-02-10 23:29:07,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:07,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:07,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063312073] [2020-02-10 23:29:07,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:07,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:07,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:07,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:07,292 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:07,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 171 transitions. Second operand 7 states. [2020-02-10 23:29:07,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:07,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:07,293 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:08,503 INFO L129 PetriNetUnfolder]: 90/989 cut-off events. [2020-02-10 23:29:08,503 INFO L130 PetriNetUnfolder]: For 85992/86413 co-relation queries the response was YES. [2020-02-10 23:29:08,521 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9562 conditions, 989 events. 90/989 cut-off events. For 85992/86413 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11510 event pairs. 15/984 useless extension candidates. Maximal degree in co-relation 9421. Up to 178 conditions per place. [2020-02-10 23:29:08,549 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 102 selfloop transitions, 79 changer transitions 1/194 dead transitions. [2020-02-10 23:29:08,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:08,550 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:08,550 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:08,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:08,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:08,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:08,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:08,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:08,551 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:08,551 INFO L178 Difference]: Start difference. First operand has 272 places, 171 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:08,554 INFO L206 Difference]: Finished difference. Result has 282 places, 179 transitions [2020-02-10 23:29:08,554 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=6895, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7443, PETRI_PLACES=282, PETRI_TRANSITIONS=179} [2020-02-10 23:29:08,555 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 282 places, 179 transitions [2020-02-10 23:29:09,270 INFO L129 PetriNetUnfolder]: 89/984 cut-off events. [2020-02-10 23:29:09,270 INFO L130 PetriNetUnfolder]: For 87783/87843 co-relation queries the response was YES. [2020-02-10 23:29:09,289 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9452 conditions, 984 events. 89/984 cut-off events. For 87783/87843 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11498 event pairs. 0/966 useless extension candidates. Maximal degree in co-relation 9307. Up to 178 conditions per place. [2020-02-10 23:29:09,289 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 179 transitions [2020-02-10 23:29:09,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 179 transitions [2020-02-10 23:29:09,316 INFO L479 AbstractCegarLoop]: Abstraction has has 282 places, 179 transitions [2020-02-10 23:29:09,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:09,706 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:29:09,707 INFO L130 PetriNetUnfolder]: For 87748/87775 co-relation queries the response was YES. [2020-02-10 23:29:09,707 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:09,707 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:09,707 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:09,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:09,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1902876912, now seen corresponding path program 27 times [2020-02-10 23:29:09,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:09,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480184241] [2020-02-10 23:29:09,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:09,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:09,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480184241] [2020-02-10 23:29:09,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:09,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:09,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082706299] [2020-02-10 23:29:09,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:09,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:09,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:09,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:09,907 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:09,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 179 transitions. Second operand 7 states. [2020-02-10 23:29:09,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:09,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:09,908 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:11,171 INFO L129 PetriNetUnfolder]: 90/986 cut-off events. [2020-02-10 23:29:11,171 INFO L130 PetriNetUnfolder]: For 91075/91256 co-relation queries the response was YES. [2020-02-10 23:29:11,190 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9819 conditions, 986 events. 90/986 cut-off events. For 91075/91256 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11405 event pairs. 6/974 useless extension candidates. Maximal degree in co-relation 9673. Up to 182 conditions per place. [2020-02-10 23:29:11,232 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 122 selfloop transitions, 64 changer transitions 0/198 dead transitions. [2020-02-10 23:29:11,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:11,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:11,233 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:11,233 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:11,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:11,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:11,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:11,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:11,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:11,235 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:11,235 INFO L178 Difference]: Start difference. First operand has 282 places, 179 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:11,238 INFO L206 Difference]: Finished difference. Result has 292 places, 186 transitions [2020-02-10 23:29:11,239 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=7443, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7980, PETRI_PLACES=292, PETRI_TRANSITIONS=186} [2020-02-10 23:29:11,239 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 292 places, 186 transitions [2020-02-10 23:29:12,042 INFO L129 PetriNetUnfolder]: 89/983 cut-off events. [2020-02-10 23:29:12,042 INFO L130 PetriNetUnfolder]: For 93624/93651 co-relation queries the response was YES. [2020-02-10 23:29:12,066 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9706 conditions, 983 events. 89/983 cut-off events. For 93624/93651 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11519 event pairs. 0/965 useless extension candidates. Maximal degree in co-relation 9556. Up to 178 conditions per place. [2020-02-10 23:29:12,066 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 186 transitions [2020-02-10 23:29:12,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 186 transitions [2020-02-10 23:29:12,101 INFO L479 AbstractCegarLoop]: Abstraction has has 292 places, 186 transitions [2020-02-10 23:29:12,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:12,563 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:29:12,564 INFO L130 PetriNetUnfolder]: For 94285/94386 co-relation queries the response was YES. [2020-02-10 23:29:12,564 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:12,564 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:12,564 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:12,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:12,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1110049154, now seen corresponding path program 28 times [2020-02-10 23:29:12,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:12,564 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61876071] [2020-02-10 23:29:12,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:12,723 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 23:29:12,723 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61876071] [2020-02-10 23:29:12,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:12,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:12,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681311926] [2020-02-10 23:29:12,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:12,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:12,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:12,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:12,725 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:12,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 186 transitions. Second operand 7 states. [2020-02-10 23:29:12,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:12,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:12,725 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:14,023 INFO L129 PetriNetUnfolder]: 90/985 cut-off events. [2020-02-10 23:29:14,024 INFO L130 PetriNetUnfolder]: For 97020/97199 co-relation queries the response was YES. [2020-02-10 23:29:14,044 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10071 conditions, 985 events. 90/985 cut-off events. For 97020/97199 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11433 event pairs. 6/974 useless extension candidates. Maximal degree in co-relation 9920. Up to 179 conditions per place. [2020-02-10 23:29:14,073 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 108 selfloop transitions, 80 changer transitions 0/200 dead transitions. [2020-02-10 23:29:14,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:14,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:14,074 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:14,074 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:14,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:14,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:14,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:14,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:14,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:14,076 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:14,076 INFO L178 Difference]: Start difference. First operand has 292 places, 186 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:14,078 INFO L206 Difference]: Finished difference. Result has 300 places, 189 transitions [2020-02-10 23:29:14,078 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=7980, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8307, PETRI_PLACES=300, PETRI_TRANSITIONS=189} [2020-02-10 23:29:14,079 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 300 places, 189 transitions [2020-02-10 23:29:14,846 INFO L129 PetriNetUnfolder]: 89/982 cut-off events. [2020-02-10 23:29:14,846 INFO L130 PetriNetUnfolder]: For 98888/98989 co-relation queries the response was YES. [2020-02-10 23:29:14,866 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9904 conditions, 982 events. 89/982 cut-off events. For 98888/98989 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11483 event pairs. 2/966 useless extension candidates. Maximal degree in co-relation 9751. Up to 178 conditions per place. [2020-02-10 23:29:14,866 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 189 transitions [2020-02-10 23:29:14,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 189 transitions [2020-02-10 23:29:14,894 INFO L479 AbstractCegarLoop]: Abstraction has has 300 places, 189 transitions [2020-02-10 23:29:14,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:15,295 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:29:15,295 INFO L130 PetriNetUnfolder]: For 98888/98989 co-relation queries the response was YES. [2020-02-10 23:29:15,295 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:15,296 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:15,296 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:15,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:15,296 INFO L82 PathProgramCache]: Analyzing trace with hash 839613698, now seen corresponding path program 29 times [2020-02-10 23:29:15,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:15,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454716108] [2020-02-10 23:29:15,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:15,490 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 23:29:15,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454716108] [2020-02-10 23:29:15,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:15,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:15,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466130335] [2020-02-10 23:29:15,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:15,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:15,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:15,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:15,493 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:15,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 189 transitions. Second operand 7 states. [2020-02-10 23:29:15,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:15,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:15,493 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:16,854 INFO L129 PetriNetUnfolder]: 90/984 cut-off events. [2020-02-10 23:29:16,854 INFO L130 PetriNetUnfolder]: For 101724/101903 co-relation queries the response was YES. [2020-02-10 23:29:16,874 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10267 conditions, 984 events. 90/984 cut-off events. For 101724/101903 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11423 event pairs. 8/978 useless extension candidates. Maximal degree in co-relation 10113. Up to 189 conditions per place. [2020-02-10 23:29:16,904 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 108 selfloop transitions, 90 changer transitions 0/210 dead transitions. [2020-02-10 23:29:16,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:16,906 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:16,906 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:16,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:16,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:16,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:16,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:16,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:16,907 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:16,907 INFO L178 Difference]: Start difference. First operand has 300 places, 189 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:16,911 INFO L206 Difference]: Finished difference. Result has 309 places, 196 transitions [2020-02-10 23:29:16,912 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=8307, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8801, PETRI_PLACES=309, PETRI_TRANSITIONS=196} [2020-02-10 23:29:16,912 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 309 places, 196 transitions [2020-02-10 23:29:17,747 INFO L129 PetriNetUnfolder]: 89/981 cut-off events. [2020-02-10 23:29:17,747 INFO L130 PetriNetUnfolder]: For 104289/104390 co-relation queries the response was YES. [2020-02-10 23:29:17,767 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10125 conditions, 981 events. 89/981 cut-off events. For 104289/104390 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11457 event pairs. 2/965 useless extension candidates. Maximal degree in co-relation 9968. Up to 178 conditions per place. [2020-02-10 23:29:17,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 196 transitions [2020-02-10 23:29:17,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 196 transitions [2020-02-10 23:29:17,797 INFO L479 AbstractCegarLoop]: Abstraction has has 309 places, 196 transitions [2020-02-10 23:29:17,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:18,306 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:29:18,306 INFO L130 PetriNetUnfolder]: For 103840/103884 co-relation queries the response was YES. [2020-02-10 23:29:18,306 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:18,306 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:18,306 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:18,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:18,307 INFO L82 PathProgramCache]: Analyzing trace with hash -145799558, now seen corresponding path program 30 times [2020-02-10 23:29:18,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:18,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278270667] [2020-02-10 23:29:18,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:18,478 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 23:29:18,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278270667] [2020-02-10 23:29:18,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:18,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:18,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634058750] [2020-02-10 23:29:18,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:18,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:18,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:18,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:18,480 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:18,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 196 transitions. Second operand 7 states. [2020-02-10 23:29:18,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:18,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:18,480 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:19,884 INFO L129 PetriNetUnfolder]: 90/983 cut-off events. [2020-02-10 23:29:19,884 INFO L130 PetriNetUnfolder]: For 107184/107365 co-relation queries the response was YES. [2020-02-10 23:29:19,905 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10487 conditions, 983 events. 90/983 cut-off events. For 107184/107365 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11366 event pairs. 2/967 useless extension candidates. Maximal degree in co-relation 10329. Up to 179 conditions per place. [2020-02-10 23:29:19,935 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 116 selfloop transitions, 75 changer transitions 0/203 dead transitions. [2020-02-10 23:29:19,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:19,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:19,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:19,936 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:19,936 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:19,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:19,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:19,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:19,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:19,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:19,937 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:19,937 INFO L178 Difference]: Start difference. First operand has 309 places, 196 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:19,940 INFO L206 Difference]: Finished difference. Result has 316 places, 196 transitions [2020-02-10 23:29:19,940 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=8801, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8954, PETRI_PLACES=316, PETRI_TRANSITIONS=196} [2020-02-10 23:29:19,940 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 316 places, 196 transitions [2020-02-10 23:29:20,767 INFO L129 PetriNetUnfolder]: 89/980 cut-off events. [2020-02-10 23:29:20,767 INFO L130 PetriNetUnfolder]: For 108230/108274 co-relation queries the response was YES. [2020-02-10 23:29:20,790 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10306 conditions, 980 events. 89/980 cut-off events. For 108230/108274 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11487 event pairs. 1/962 useless extension candidates. Maximal degree in co-relation 10147. Up to 178 conditions per place. [2020-02-10 23:29:20,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 196 transitions [2020-02-10 23:29:20,821 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 316 places, 196 transitions [2020-02-10 23:29:20,822 INFO L479 AbstractCegarLoop]: Abstraction has has 316 places, 196 transitions [2020-02-10 23:29:20,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:21,290 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:29:21,290 INFO L130 PetriNetUnfolder]: For 108230/108274 co-relation queries the response was YES. [2020-02-10 23:29:21,290 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:21,290 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:21,290 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:21,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:21,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1041369948, now seen corresponding path program 31 times [2020-02-10 23:29:21,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:21,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843437316] [2020-02-10 23:29:21,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:21,459 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 23:29:21,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843437316] [2020-02-10 23:29:21,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:21,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:21,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308858452] [2020-02-10 23:29:21,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:21,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:21,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:21,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:21,461 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:21,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 196 transitions. Second operand 7 states. [2020-02-10 23:29:21,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:21,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:21,462 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:22,934 INFO L129 PetriNetUnfolder]: 90/982 cut-off events. [2020-02-10 23:29:22,935 INFO L130 PetriNetUnfolder]: For 111663/111844 co-relation queries the response was YES. [2020-02-10 23:29:22,956 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10666 conditions, 982 events. 90/982 cut-off events. For 111663/111844 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11394 event pairs. 6/970 useless extension candidates. Maximal degree in co-relation 10506. Up to 178 conditions per place. [2020-02-10 23:29:22,987 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 103 selfloop transitions, 89 changer transitions 0/204 dead transitions. [2020-02-10 23:29:22,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:22,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:22,988 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:22,988 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:22,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:22,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:22,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:22,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:22,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:22,990 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:22,990 INFO L178 Difference]: Start difference. First operand has 316 places, 196 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:22,994 INFO L206 Difference]: Finished difference. Result has 324 places, 201 transitions [2020-02-10 23:29:22,995 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=8954, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9431, PETRI_PLACES=324, PETRI_TRANSITIONS=201} [2020-02-10 23:29:22,995 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 324 places, 201 transitions [2020-02-10 23:29:23,865 INFO L129 PetriNetUnfolder]: 89/979 cut-off events. [2020-02-10 23:29:23,866 INFO L130 PetriNetUnfolder]: For 113211/113255 co-relation queries the response was YES. [2020-02-10 23:29:23,887 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10513 conditions, 979 events. 89/979 cut-off events. For 113211/113255 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11461 event pairs. 1/960 useless extension candidates. Maximal degree in co-relation 10351. Up to 178 conditions per place. [2020-02-10 23:29:23,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 201 transitions [2020-02-10 23:29:23,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 201 transitions [2020-02-10 23:29:23,917 INFO L479 AbstractCegarLoop]: Abstraction has has 324 places, 201 transitions [2020-02-10 23:29:23,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:24,369 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:29:24,369 INFO L130 PetriNetUnfolder]: For 112987/113013 co-relation queries the response was YES. [2020-02-10 23:29:24,370 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:24,370 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:24,370 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:24,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:24,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1777861626, now seen corresponding path program 32 times [2020-02-10 23:29:24,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:24,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51789907] [2020-02-10 23:29:24,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:24,527 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 23:29:24,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51789907] [2020-02-10 23:29:24,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:24,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:24,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901820886] [2020-02-10 23:29:24,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:24,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:24,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:24,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:24,529 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:24,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 201 transitions. Second operand 7 states. [2020-02-10 23:29:24,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:24,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:24,530 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:26,018 INFO L129 PetriNetUnfolder]: 90/981 cut-off events. [2020-02-10 23:29:26,018 INFO L130 PetriNetUnfolder]: For 116330/116439 co-relation queries the response was YES. [2020-02-10 23:29:26,042 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10871 conditions, 981 events. 90/981 cut-off events. For 116330/116439 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11364 event pairs. 1/966 useless extension candidates. Maximal degree in co-relation 10708. Up to 178 conditions per place. [2020-02-10 23:29:26,076 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 104 selfloop transitions, 89 changer transitions 0/205 dead transitions. [2020-02-10 23:29:26,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:26,077 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:26,077 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:26,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:26,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:26,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:26,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:26,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:26,078 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:26,078 INFO L178 Difference]: Start difference. First operand has 324 places, 201 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:26,081 INFO L206 Difference]: Finished difference. Result has 332 places, 202 transitions [2020-02-10 23:29:26,082 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=9431, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9683, PETRI_PLACES=332, PETRI_TRANSITIONS=202} [2020-02-10 23:29:26,082 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 332 places, 202 transitions [2020-02-10 23:29:26,944 INFO L129 PetriNetUnfolder]: 89/978 cut-off events. [2020-02-10 23:29:26,944 INFO L130 PetriNetUnfolder]: For 117721/117747 co-relation queries the response was YES. [2020-02-10 23:29:26,965 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10696 conditions, 978 events. 89/978 cut-off events. For 117721/117747 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11411 event pairs. 0/959 useless extension candidates. Maximal degree in co-relation 10531. Up to 178 conditions per place. [2020-02-10 23:29:26,965 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 202 transitions [2020-02-10 23:29:26,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 202 transitions [2020-02-10 23:29:26,995 INFO L479 AbstractCegarLoop]: Abstraction has has 332 places, 202 transitions [2020-02-10 23:29:26,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:27,454 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:29:27,455 INFO L130 PetriNetUnfolder]: For 117721/117747 co-relation queries the response was YES. [2020-02-10 23:29:27,455 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:27,455 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:27,455 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:27,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:27,455 INFO L82 PathProgramCache]: Analyzing trace with hash 510966206, now seen corresponding path program 33 times [2020-02-10 23:29:27,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:27,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141758940] [2020-02-10 23:29:27,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:27,598 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 23:29:27,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141758940] [2020-02-10 23:29:27,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:27,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:27,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103683556] [2020-02-10 23:29:27,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:27,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:27,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:27,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:27,601 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:27,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 202 transitions. Second operand 7 states. [2020-02-10 23:29:27,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:27,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:27,601 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:29,081 INFO L129 PetriNetUnfolder]: 90/980 cut-off events. [2020-02-10 23:29:29,082 INFO L130 PetriNetUnfolder]: For 121156/121265 co-relation queries the response was YES. [2020-02-10 23:29:29,107 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11052 conditions, 980 events. 90/980 cut-off events. For 121156/121265 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11356 event pairs. 1/965 useless extension candidates. Maximal degree in co-relation 10886. Up to 184 conditions per place. [2020-02-10 23:29:29,138 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 113 selfloop transitions, 90 changer transitions 0/215 dead transitions. [2020-02-10 23:29:29,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:29,142 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:29,142 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:29,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:29,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:29,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:29,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:29,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:29,143 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:29,144 INFO L178 Difference]: Start difference. First operand has 332 places, 202 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:29,148 INFO L206 Difference]: Finished difference. Result has 340 places, 204 transitions [2020-02-10 23:29:29,148 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=9683, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10005, PETRI_PLACES=340, PETRI_TRANSITIONS=204} [2020-02-10 23:29:29,148 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 340 places, 204 transitions [2020-02-10 23:29:30,070 INFO L129 PetriNetUnfolder]: 89/977 cut-off events. [2020-02-10 23:29:30,070 INFO L130 PetriNetUnfolder]: For 122577/122603 co-relation queries the response was YES. [2020-02-10 23:29:30,092 INFO L76 FinitePrefix]: Finished finitePrefix Result has 10879 conditions, 977 events. 89/977 cut-off events. For 122577/122603 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11409 event pairs. 0/959 useless extension candidates. Maximal degree in co-relation 10711. Up to 178 conditions per place. [2020-02-10 23:29:30,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 204 transitions [2020-02-10 23:29:30,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 204 transitions [2020-02-10 23:29:30,122 INFO L479 AbstractCegarLoop]: Abstraction has has 340 places, 204 transitions [2020-02-10 23:29:30,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:30,600 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:29:30,600 INFO L130 PetriNetUnfolder]: For 122577/122603 co-relation queries the response was YES. [2020-02-10 23:29:30,600 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:30,600 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:30,600 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:30,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:30,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1016883770, now seen corresponding path program 34 times [2020-02-10 23:29:30,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:30,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558594513] [2020-02-10 23:29:30,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:30,789 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 23:29:30,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558594513] [2020-02-10 23:29:30,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:30,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:30,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788854450] [2020-02-10 23:29:30,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:30,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:30,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:30,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:30,791 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:30,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 204 transitions. Second operand 7 states. [2020-02-10 23:29:30,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:30,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:30,791 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:32,357 INFO L129 PetriNetUnfolder]: 90/979 cut-off events. [2020-02-10 23:29:32,358 INFO L130 PetriNetUnfolder]: For 126096/126205 co-relation queries the response was YES. [2020-02-10 23:29:32,379 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11233 conditions, 979 events. 90/979 cut-off events. For 126096/126205 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11316 event pairs. 1/964 useless extension candidates. Maximal degree in co-relation 11064. Up to 178 conditions per place. [2020-02-10 23:29:32,410 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 119 selfloop transitions, 82 changer transitions 0/213 dead transitions. [2020-02-10 23:29:32,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:32,414 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:32,414 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:32,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:32,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:32,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:32,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:32,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:32,415 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:32,415 INFO L178 Difference]: Start difference. First operand has 340 places, 204 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:32,419 INFO L206 Difference]: Finished difference. Result has 348 places, 208 transitions [2020-02-10 23:29:32,420 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=10005, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10444, PETRI_PLACES=348, PETRI_TRANSITIONS=208} [2020-02-10 23:29:32,420 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 348 places, 208 transitions [2020-02-10 23:29:33,346 INFO L129 PetriNetUnfolder]: 89/976 cut-off events. [2020-02-10 23:29:33,346 INFO L130 PetriNetUnfolder]: For 128274/128300 co-relation queries the response was YES. [2020-02-10 23:29:33,370 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11080 conditions, 976 events. 89/976 cut-off events. For 128274/128300 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11449 event pairs. 0/958 useless extension candidates. Maximal degree in co-relation 10909. Up to 178 conditions per place. [2020-02-10 23:29:33,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 348 places, 208 transitions [2020-02-10 23:29:33,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 348 places, 208 transitions [2020-02-10 23:29:33,404 INFO L479 AbstractCegarLoop]: Abstraction has has 348 places, 208 transitions [2020-02-10 23:29:33,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:33,902 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:29:33,903 INFO L130 PetriNetUnfolder]: For 128548/128593 co-relation queries the response was YES. [2020-02-10 23:29:33,903 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:33,903 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:33,903 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:33,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:33,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1018956826, now seen corresponding path program 35 times [2020-02-10 23:29:33,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:33,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710265143] [2020-02-10 23:29:33,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:34,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710265143] [2020-02-10 23:29:34,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:34,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:34,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883986000] [2020-02-10 23:29:34,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:34,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:34,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:34,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:34,065 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:34,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 208 transitions. Second operand 7 states. [2020-02-10 23:29:34,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:34,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:34,066 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:35,613 INFO L129 PetriNetUnfolder]: 90/978 cut-off events. [2020-02-10 23:29:35,613 INFO L130 PetriNetUnfolder]: For 132444/132639 co-relation queries the response was YES. [2020-02-10 23:29:35,635 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11432 conditions, 978 events. 90/978 cut-off events. For 132444/132639 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11321 event pairs. 4/968 useless extension candidates. Maximal degree in co-relation 11260. Up to 180 conditions per place. [2020-02-10 23:29:35,666 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 154 selfloop transitions, 96 changer transitions 5/267 dead transitions. [2020-02-10 23:29:35,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:35,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:35,667 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:35,667 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:35,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:35,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:35,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:35,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:35,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:35,668 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:35,668 INFO L178 Difference]: Start difference. First operand has 348 places, 208 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:35,673 INFO L206 Difference]: Finished difference. Result has 358 places, 233 transitions [2020-02-10 23:29:35,673 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=10444, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12183, PETRI_PLACES=358, PETRI_TRANSITIONS=233} [2020-02-10 23:29:35,673 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 358 places, 233 transitions [2020-02-10 23:29:36,684 INFO L129 PetriNetUnfolder]: 89/972 cut-off events. [2020-02-10 23:29:36,684 INFO L130 PetriNetUnfolder]: For 135344/135395 co-relation queries the response was YES. [2020-02-10 23:29:36,707 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11251 conditions, 972 events. 89/972 cut-off events. For 135344/135395 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11351 event pairs. 1/957 useless extension candidates. Maximal degree in co-relation 11075. Up to 178 conditions per place. [2020-02-10 23:29:36,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 358 places, 233 transitions [2020-02-10 23:29:36,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 358 places, 233 transitions [2020-02-10 23:29:36,740 INFO L479 AbstractCegarLoop]: Abstraction has has 358 places, 233 transitions [2020-02-10 23:29:36,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:37,244 INFO L129 PetriNetUnfolder]: 89/893 cut-off events. [2020-02-10 23:29:37,245 INFO L130 PetriNetUnfolder]: For 135244/135294 co-relation queries the response was YES. [2020-02-10 23:29:37,245 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:37,245 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:37,245 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:37,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:37,245 INFO L82 PathProgramCache]: Analyzing trace with hash -256403714, now seen corresponding path program 36 times [2020-02-10 23:29:37,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:37,245 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019837493] [2020-02-10 23:29:37,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:37,404 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 23:29:37,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019837493] [2020-02-10 23:29:37,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:37,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:37,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570774457] [2020-02-10 23:29:37,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:37,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:37,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:37,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:37,406 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:37,406 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 233 transitions. Second operand 7 states. [2020-02-10 23:29:37,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:37,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:37,407 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:39,145 INFO L129 PetriNetUnfolder]: 90/974 cut-off events. [2020-02-10 23:29:39,145 INFO L130 PetriNetUnfolder]: For 139713/139924 co-relation queries the response was YES. [2020-02-10 23:29:39,166 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11599 conditions, 974 events. 90/974 cut-off events. For 139713/139924 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11253 event pairs. 2/961 useless extension candidates. Maximal degree in co-relation 11422. Up to 178 conditions per place. [2020-02-10 23:29:39,195 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 140 selfloop transitions, 86 changer transitions 2/240 dead transitions. [2020-02-10 23:29:39,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:39,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:39,196 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:39,196 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:39,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:39,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:39,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:39,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:39,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:39,198 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:39,198 INFO L178 Difference]: Start difference. First operand has 358 places, 233 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:39,202 INFO L206 Difference]: Finished difference. Result has 366 places, 235 transitions [2020-02-10 23:29:39,202 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=12183, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12530, PETRI_PLACES=366, PETRI_TRANSITIONS=235} [2020-02-10 23:29:39,203 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 366 places, 235 transitions [2020-02-10 23:29:40,214 INFO L129 PetriNetUnfolder]: 88/962 cut-off events. [2020-02-10 23:29:40,214 INFO L130 PetriNetUnfolder]: For 140575/140625 co-relation queries the response was YES. [2020-02-10 23:29:40,238 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11373 conditions, 962 events. 88/962 cut-off events. For 140575/140625 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 11209 event pairs. 1/943 useless extension candidates. Maximal degree in co-relation 11194. Up to 176 conditions per place. [2020-02-10 23:29:40,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 366 places, 235 transitions [2020-02-10 23:29:40,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 365 places, 235 transitions [2020-02-10 23:29:40,272 INFO L479 AbstractCegarLoop]: Abstraction has has 365 places, 235 transitions [2020-02-10 23:29:40,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:40,779 INFO L129 PetriNetUnfolder]: 88/884 cut-off events. [2020-02-10 23:29:40,779 INFO L130 PetriNetUnfolder]: For 140575/140625 co-relation queries the response was YES. [2020-02-10 23:29:40,779 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:40,779 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:40,779 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:40,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:40,780 INFO L82 PathProgramCache]: Analyzing trace with hash -207926228, now seen corresponding path program 37 times [2020-02-10 23:29:40,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:40,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064190717] [2020-02-10 23:29:40,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:40,926 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 23:29:40,927 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064190717] [2020-02-10 23:29:40,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:40,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:40,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550479116] [2020-02-10 23:29:40,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:40,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:40,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:40,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:40,928 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:40,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 235 transitions. Second operand 7 states. [2020-02-10 23:29:40,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:40,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:40,929 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:42,640 INFO L129 PetriNetUnfolder]: 89/964 cut-off events. [2020-02-10 23:29:42,640 INFO L130 PetriNetUnfolder]: For 145125/145343 co-relation queries the response was YES. [2020-02-10 23:29:42,664 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11717 conditions, 964 events. 89/964 cut-off events. For 145125/145343 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11125 event pairs. 6/955 useless extension candidates. Maximal degree in co-relation 11537. Up to 176 conditions per place. [2020-02-10 23:29:42,699 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 125 selfloop transitions, 103 changer transitions 0/240 dead transitions. [2020-02-10 23:29:42,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:42,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:42,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:42,700 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:42,700 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:42,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:42,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:42,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:42,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:42,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:42,701 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:42,701 INFO L178 Difference]: Start difference. First operand has 365 places, 235 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:42,705 INFO L206 Difference]: Finished difference. Result has 372 places, 235 transitions [2020-02-10 23:29:42,705 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=12530, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12739, PETRI_PLACES=372, PETRI_TRANSITIONS=235} [2020-02-10 23:29:42,705 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 372 places, 235 transitions [2020-02-10 23:29:43,642 INFO L129 PetriNetUnfolder]: 88/961 cut-off events. [2020-02-10 23:29:43,643 INFO L130 PetriNetUnfolder]: For 145393/145443 co-relation queries the response was YES. [2020-02-10 23:29:43,668 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11538 conditions, 961 events. 88/961 cut-off events. For 145393/145443 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11182 event pairs. 1/943 useless extension candidates. Maximal degree in co-relation 11357. Up to 176 conditions per place. [2020-02-10 23:29:43,668 INFO L82 GeneralOperation]: Start removeDead. Operand has 372 places, 235 transitions [2020-02-10 23:29:43,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 372 places, 235 transitions [2020-02-10 23:29:43,700 INFO L479 AbstractCegarLoop]: Abstraction has has 372 places, 235 transitions [2020-02-10 23:29:43,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:44,208 INFO L129 PetriNetUnfolder]: 88/884 cut-off events. [2020-02-10 23:29:44,208 INFO L130 PetriNetUnfolder]: For 145393/145443 co-relation queries the response was YES. [2020-02-10 23:29:44,208 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:44,208 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:44,208 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:44,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:44,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1775124158, now seen corresponding path program 38 times [2020-02-10 23:29:44,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:44,209 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999107839] [2020-02-10 23:29:44,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:44,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999107839] [2020-02-10 23:29:44,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:44,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:44,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972297796] [2020-02-10 23:29:44,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:44,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:44,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:44,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:44,356 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:44,357 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 235 transitions. Second operand 7 states. [2020-02-10 23:29:44,357 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:44,357 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:44,357 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:46,070 INFO L129 PetriNetUnfolder]: 89/963 cut-off events. [2020-02-10 23:29:46,071 INFO L130 PetriNetUnfolder]: For 149526/149661 co-relation queries the response was YES. [2020-02-10 23:29:46,095 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11880 conditions, 963 events. 89/963 cut-off events. For 149526/149661 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11121 event pairs. 1/949 useless extension candidates. Maximal degree in co-relation 11698. Up to 176 conditions per place. [2020-02-10 23:29:46,129 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 119 selfloop transitions, 96 changer transitions 11/238 dead transitions. [2020-02-10 23:29:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:46,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:46,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:46,130 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:46,130 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:46,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:46,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:46,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:46,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:46,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:46,132 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:46,132 INFO L178 Difference]: Start difference. First operand has 372 places, 235 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:46,137 INFO L206 Difference]: Finished difference. Result has 379 places, 224 transitions [2020-02-10 23:29:46,137 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=12739, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12204, PETRI_PLACES=379, PETRI_TRANSITIONS=224} [2020-02-10 23:29:46,138 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 379 places, 224 transitions [2020-02-10 23:29:47,031 INFO L129 PetriNetUnfolder]: 85/926 cut-off events. [2020-02-10 23:29:47,032 INFO L130 PetriNetUnfolder]: For 145371/145421 co-relation queries the response was YES. [2020-02-10 23:29:47,051 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11312 conditions, 926 events. 85/926 cut-off events. For 145371/145421 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10638 event pairs. 1/910 useless extension candidates. Maximal degree in co-relation 11129. Up to 170 conditions per place. [2020-02-10 23:29:47,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 379 places, 224 transitions [2020-02-10 23:29:47,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 373 places, 224 transitions [2020-02-10 23:29:47,080 INFO L479 AbstractCegarLoop]: Abstraction has has 373 places, 224 transitions [2020-02-10 23:29:47,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:47,568 INFO L129 PetriNetUnfolder]: 85/850 cut-off events. [2020-02-10 23:29:47,568 INFO L130 PetriNetUnfolder]: For 145371/145421 co-relation queries the response was YES. [2020-02-10 23:29:47,568 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:47,568 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:47,568 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:47,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:47,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1872278270, now seen corresponding path program 39 times [2020-02-10 23:29:47,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:47,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794022850] [2020-02-10 23:29:47,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:47,747 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 23:29:47,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794022850] [2020-02-10 23:29:47,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:47,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:47,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170557271] [2020-02-10 23:29:47,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:47,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:47,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:47,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:47,749 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:47,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 224 transitions. Second operand 7 states. [2020-02-10 23:29:47,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:47,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:47,749 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:49,471 INFO L129 PetriNetUnfolder]: 86/928 cut-off events. [2020-02-10 23:29:49,471 INFO L130 PetriNetUnfolder]: For 149633/149768 co-relation queries the response was YES. [2020-02-10 23:29:49,495 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11641 conditions, 928 events. 86/928 cut-off events. For 149633/149768 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10628 event pairs. 3/916 useless extension candidates. Maximal degree in co-relation 11457. Up to 170 conditions per place. [2020-02-10 23:29:49,528 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 120 selfloop transitions, 102 changer transitions 0/234 dead transitions. [2020-02-10 23:29:49,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:49,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:49,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:49,529 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:49,530 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:49,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:49,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:49,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:49,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:49,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:49,531 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:49,531 INFO L178 Difference]: Start difference. First operand has 373 places, 224 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:49,535 INFO L206 Difference]: Finished difference. Result has 382 places, 229 transitions [2020-02-10 23:29:49,535 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=12204, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12815, PETRI_PLACES=382, PETRI_TRANSITIONS=229} [2020-02-10 23:29:49,535 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 382 places, 229 transitions [2020-02-10 23:29:50,486 INFO L129 PetriNetUnfolder]: 85/925 cut-off events. [2020-02-10 23:29:50,486 INFO L130 PetriNetUnfolder]: For 151750/151800 co-relation queries the response was YES. [2020-02-10 23:29:50,510 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11501 conditions, 925 events. 85/925 cut-off events. For 151750/151800 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10615 event pairs. 1/908 useless extension candidates. Maximal degree in co-relation 11314. Up to 170 conditions per place. [2020-02-10 23:29:50,510 INFO L82 GeneralOperation]: Start removeDead. Operand has 382 places, 229 transitions [2020-02-10 23:29:50,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 382 places, 229 transitions [2020-02-10 23:29:50,543 INFO L479 AbstractCegarLoop]: Abstraction has has 382 places, 229 transitions [2020-02-10 23:29:50,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:51,054 INFO L129 PetriNetUnfolder]: 85/850 cut-off events. [2020-02-10 23:29:51,054 INFO L130 PetriNetUnfolder]: For 151553/151582 co-relation queries the response was YES. [2020-02-10 23:29:51,054 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:51,054 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:51,054 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:51,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:51,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1017312472, now seen corresponding path program 40 times [2020-02-10 23:29:51,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:51,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512633177] [2020-02-10 23:29:51,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:51,233 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 23:29:51,234 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512633177] [2020-02-10 23:29:51,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:51,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:51,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337599583] [2020-02-10 23:29:51,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:51,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:51,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:51,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:51,237 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:51,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 229 transitions. Second operand 7 states. [2020-02-10 23:29:51,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:51,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:51,238 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:53,053 INFO L129 PetriNetUnfolder]: 86/927 cut-off events. [2020-02-10 23:29:53,053 INFO L130 PetriNetUnfolder]: For 156060/156193 co-relation queries the response was YES. [2020-02-10 23:29:53,078 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11828 conditions, 927 events. 86/927 cut-off events. For 156060/156193 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10591 event pairs. 5/919 useless extension candidates. Maximal degree in co-relation 11640. Up to 170 conditions per place. [2020-02-10 23:29:53,113 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 153 selfloop transitions, 100 changer transitions 2/267 dead transitions. [2020-02-10 23:29:53,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:53,115 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:53,115 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:53,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:53,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:53,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:53,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:53,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:53,116 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:53,116 INFO L178 Difference]: Start difference. First operand has 382 places, 229 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:53,120 INFO L206 Difference]: Finished difference. Result has 392 places, 246 transitions [2020-02-10 23:29:53,120 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=12815, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14085, PETRI_PLACES=392, PETRI_TRANSITIONS=246} [2020-02-10 23:29:53,120 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 392 places, 246 transitions [2020-02-10 23:29:54,113 INFO L129 PetriNetUnfolder]: 85/920 cut-off events. [2020-02-10 23:29:54,113 INFO L130 PetriNetUnfolder]: For 159307/159356 co-relation queries the response was YES. [2020-02-10 23:29:54,138 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11690 conditions, 920 events. 85/920 cut-off events. For 159307/159356 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10548 event pairs. 4/908 useless extension candidates. Maximal degree in co-relation 11498. Up to 170 conditions per place. [2020-02-10 23:29:54,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 392 places, 246 transitions [2020-02-10 23:29:54,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 392 places, 246 transitions [2020-02-10 23:29:54,176 INFO L479 AbstractCegarLoop]: Abstraction has has 392 places, 246 transitions [2020-02-10 23:29:54,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:54,708 INFO L129 PetriNetUnfolder]: 85/846 cut-off events. [2020-02-10 23:29:54,708 INFO L130 PetriNetUnfolder]: For 159785/159874 co-relation queries the response was YES. [2020-02-10 23:29:54,708 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:54,708 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:54,708 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:54,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:54,708 INFO L82 PathProgramCache]: Analyzing trace with hash -277838624, now seen corresponding path program 41 times [2020-02-10 23:29:54,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:54,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679806870] [2020-02-10 23:29:54,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:54,834 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 23:29:54,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679806870] [2020-02-10 23:29:54,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:54,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:54,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572664670] [2020-02-10 23:29:54,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:54,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:54,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:54,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:54,836 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:54,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 246 transitions. Second operand 7 states. [2020-02-10 23:29:54,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:54,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:54,837 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:56,553 INFO L129 PetriNetUnfolder]: 86/922 cut-off events. [2020-02-10 23:29:56,553 INFO L130 PetriNetUnfolder]: For 164229/164442 co-relation queries the response was YES. [2020-02-10 23:29:56,577 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12014 conditions, 922 events. 86/922 cut-off events. For 164229/164442 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10559 event pairs. 8/921 useless extension candidates. Maximal degree in co-relation 11821. Up to 170 conditions per place. [2020-02-10 23:29:56,613 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 143 selfloop transitions, 104 changer transitions 0/259 dead transitions. [2020-02-10 23:29:56,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:29:56,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:29:56,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:29:56,614 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:29:56,614 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:29:56,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:29:56,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:56,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:29:56,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:29:56,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:29:56,615 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:29:56,615 INFO L178 Difference]: Start difference. First operand has 392 places, 246 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:29:56,621 INFO L206 Difference]: Finished difference. Result has 401 places, 252 transitions [2020-02-10 23:29:56,622 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=14085, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14694, PETRI_PLACES=401, PETRI_TRANSITIONS=252} [2020-02-10 23:29:56,622 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 401 places, 252 transitions [2020-02-10 23:29:57,636 INFO L129 PetriNetUnfolder]: 85/919 cut-off events. [2020-02-10 23:29:57,636 INFO L130 PetriNetUnfolder]: For 167112/167246 co-relation queries the response was YES. [2020-02-10 23:29:57,661 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11888 conditions, 919 events. 85/919 cut-off events. For 167112/167246 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10555 event pairs. 5/909 useless extension candidates. Maximal degree in co-relation 11692. Up to 170 conditions per place. [2020-02-10 23:29:57,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 401 places, 252 transitions [2020-02-10 23:29:57,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 401 places, 252 transitions [2020-02-10 23:29:57,696 INFO L479 AbstractCegarLoop]: Abstraction has has 401 places, 252 transitions [2020-02-10 23:29:57,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:29:58,240 INFO L129 PetriNetUnfolder]: 85/846 cut-off events. [2020-02-10 23:29:58,240 INFO L130 PetriNetUnfolder]: For 167112/167246 co-relation queries the response was YES. [2020-02-10 23:29:58,240 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:58,240 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:58,240 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:58,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:58,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1242264040, now seen corresponding path program 42 times [2020-02-10 23:29:58,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:58,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182761246] [2020-02-10 23:29:58,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:58,387 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182761246] [2020-02-10 23:29:58,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:58,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:29:58,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494626365] [2020-02-10 23:29:58,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:29:58,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:58,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:29:58,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:29:58,389 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:29:58,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 252 transitions. Second operand 7 states. [2020-02-10 23:29:58,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:58,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:29:58,390 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:00,170 INFO L129 PetriNetUnfolder]: 86/921 cut-off events. [2020-02-10 23:30:00,170 INFO L130 PetriNetUnfolder]: For 171654/171993 co-relation queries the response was YES. [2020-02-10 23:30:00,196 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12211 conditions, 921 events. 86/921 cut-off events. For 171654/171993 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10516 event pairs. 16/928 useless extension candidates. Maximal degree in co-relation 12014. Up to 170 conditions per place. [2020-02-10 23:30:00,231 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 138 selfloop transitions, 109 changer transitions 0/259 dead transitions. [2020-02-10 23:30:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:30:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:30:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:30:00,232 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:30:00,232 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:30:00,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:30:00,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:00,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:30:00,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:30:00,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:30:00,234 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:30:00,234 INFO L178 Difference]: Start difference. First operand has 401 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:30:00,238 INFO L206 Difference]: Finished difference. Result has 408 places, 252 transitions [2020-02-10 23:30:00,238 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=14694, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14915, PETRI_PLACES=408, PETRI_TRANSITIONS=252} [2020-02-10 23:30:00,238 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 408 places, 252 transitions [2020-02-10 23:30:01,288 INFO L129 PetriNetUnfolder]: 85/918 cut-off events. [2020-02-10 23:30:01,288 INFO L130 PetriNetUnfolder]: For 171862/171996 co-relation queries the response was YES. [2020-02-10 23:30:01,314 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12038 conditions, 918 events. 85/918 cut-off events. For 171862/171996 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10511 event pairs. 5/908 useless extension candidates. Maximal degree in co-relation 11840. Up to 170 conditions per place. [2020-02-10 23:30:01,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 408 places, 252 transitions [2020-02-10 23:30:01,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 408 places, 252 transitions [2020-02-10 23:30:01,349 INFO L479 AbstractCegarLoop]: Abstraction has has 408 places, 252 transitions [2020-02-10 23:30:01,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:30:01,900 INFO L129 PetriNetUnfolder]: 85/846 cut-off events. [2020-02-10 23:30:01,901 INFO L130 PetriNetUnfolder]: For 171862/171996 co-relation queries the response was YES. [2020-02-10 23:30:01,901 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:01,901 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:01,901 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:01,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:01,901 INFO L82 PathProgramCache]: Analyzing trace with hash -333837344, now seen corresponding path program 43 times [2020-02-10 23:30:01,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:01,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331095111] [2020-02-10 23:30:01,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:02,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331095111] [2020-02-10 23:30:02,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:02,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:30:02,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069571613] [2020-02-10 23:30:02,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:30:02,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:02,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:30:02,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:30:02,066 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:30:02,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 252 transitions. Second operand 7 states. [2020-02-10 23:30:02,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:02,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:30:02,067 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:03,866 INFO L129 PetriNetUnfolder]: 86/920 cut-off events. [2020-02-10 23:30:03,866 INFO L130 PetriNetUnfolder]: For 176498/176841 co-relation queries the response was YES. [2020-02-10 23:30:03,891 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12360 conditions, 920 events. 86/920 cut-off events. For 176498/176841 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10490 event pairs. 10/920 useless extension candidates. Maximal degree in co-relation 12161. Up to 170 conditions per place. [2020-02-10 23:30:03,925 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 141 selfloop transitions, 105 changer transitions 0/258 dead transitions. [2020-02-10 23:30:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:30:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:30:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:30:03,927 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:30:03,927 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:30:03,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:30:03,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:03,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:30:03,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:30:03,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:30:03,928 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:30:03,928 INFO L178 Difference]: Start difference. First operand has 408 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:30:03,932 INFO L206 Difference]: Finished difference. Result has 416 places, 255 transitions [2020-02-10 23:30:03,932 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=14915, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15380, PETRI_PLACES=416, PETRI_TRANSITIONS=255} [2020-02-10 23:30:03,932 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 416 places, 255 transitions [2020-02-10 23:30:04,990 INFO L129 PetriNetUnfolder]: 85/917 cut-off events. [2020-02-10 23:30:04,990 INFO L130 PetriNetUnfolder]: For 177374/177507 co-relation queries the response was YES. [2020-02-10 23:30:05,020 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12205 conditions, 917 events. 85/917 cut-off events. For 177374/177507 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10526 event pairs. 5/906 useless extension candidates. Maximal degree in co-relation 12004. Up to 170 conditions per place. [2020-02-10 23:30:05,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 416 places, 255 transitions [2020-02-10 23:30:05,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 416 places, 255 transitions [2020-02-10 23:30:05,058 INFO L479 AbstractCegarLoop]: Abstraction has has 416 places, 255 transitions [2020-02-10 23:30:05,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:30:05,679 INFO L129 PetriNetUnfolder]: 85/846 cut-off events. [2020-02-10 23:30:05,679 INFO L130 PetriNetUnfolder]: For 177374/177507 co-relation queries the response was YES. [2020-02-10 23:30:05,679 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:05,679 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:05,679 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:05,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:05,680 INFO L82 PathProgramCache]: Analyzing trace with hash -470598144, now seen corresponding path program 44 times [2020-02-10 23:30:05,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:05,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546782767] [2020-02-10 23:30:05,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:05,842 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 23:30:05,843 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546782767] [2020-02-10 23:30:05,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:05,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:30:05,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545833861] [2020-02-10 23:30:05,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:30:05,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:05,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:30:05,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:30:05,844 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:30:05,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 255 transitions. Second operand 7 states. [2020-02-10 23:30:05,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:05,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:30:05,845 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:07,716 INFO L129 PetriNetUnfolder]: 86/919 cut-off events. [2020-02-10 23:30:07,717 INFO L130 PetriNetUnfolder]: For 184840/185546 co-relation queries the response was YES. [2020-02-10 23:30:07,742 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12525 conditions, 919 events. 86/919 cut-off events. For 184840/185546 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10480 event pairs. 6/912 useless extension candidates. Maximal degree in co-relation 12323. Up to 170 conditions per place. [2020-02-10 23:30:07,777 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 147 selfloop transitions, 109 changer transitions 0/268 dead transitions. [2020-02-10 23:30:07,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:30:07,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:30:07,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:30:07,778 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:30:07,778 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:30:07,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:30:07,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:07,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:30:07,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:30:07,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:30:07,779 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:30:07,779 INFO L178 Difference]: Start difference. First operand has 416 places, 255 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:30:07,783 INFO L206 Difference]: Finished difference. Result has 424 places, 259 transitions [2020-02-10 23:30:07,783 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=15380, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15891, PETRI_PLACES=424, PETRI_TRANSITIONS=259} [2020-02-10 23:30:07,783 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 424 places, 259 transitions [2020-02-10 23:30:08,883 INFO L129 PetriNetUnfolder]: 85/916 cut-off events. [2020-02-10 23:30:08,883 INFO L130 PetriNetUnfolder]: For 183702/183835 co-relation queries the response was YES. [2020-02-10 23:30:08,910 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12369 conditions, 916 events. 85/916 cut-off events. For 183702/183835 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10518 event pairs. 5/906 useless extension candidates. Maximal degree in co-relation 12165. Up to 170 conditions per place. [2020-02-10 23:30:08,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 424 places, 259 transitions [2020-02-10 23:30:08,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 424 places, 259 transitions [2020-02-10 23:30:08,946 INFO L479 AbstractCegarLoop]: Abstraction has has 424 places, 259 transitions [2020-02-10 23:30:08,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:30:09,534 INFO L129 PetriNetUnfolder]: 85/846 cut-off events. [2020-02-10 23:30:09,534 INFO L130 PetriNetUnfolder]: For 183702/183835 co-relation queries the response was YES. [2020-02-10 23:30:09,535 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:09,535 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:09,535 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:09,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:09,535 INFO L82 PathProgramCache]: Analyzing trace with hash -923032864, now seen corresponding path program 45 times [2020-02-10 23:30:09,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:09,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089701341] [2020-02-10 23:30:09,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:09,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089701341] [2020-02-10 23:30:09,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:09,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:30:09,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091108415] [2020-02-10 23:30:09,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:30:09,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:09,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:30:09,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:30:09,677 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:30:09,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 259 transitions. Second operand 7 states. [2020-02-10 23:30:09,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:09,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:30:09,677 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:11,524 INFO L129 PetriNetUnfolder]: 86/918 cut-off events. [2020-02-10 23:30:11,525 INFO L130 PetriNetUnfolder]: For 191461/192167 co-relation queries the response was YES. [2020-02-10 23:30:11,550 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12687 conditions, 918 events. 86/918 cut-off events. For 191461/192167 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10475 event pairs. 26/933 useless extension candidates. Maximal degree in co-relation 12482. Up to 170 conditions per place. [2020-02-10 23:30:11,584 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 149 selfloop transitions, 108 changer transitions 0/269 dead transitions. [2020-02-10 23:30:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:30:11,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:30:11,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:30:11,585 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:30:11,585 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:30:11,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:30:11,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:11,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:30:11,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:30:11,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:30:11,587 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:30:11,587 INFO L178 Difference]: Start difference. First operand has 424 places, 259 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:30:11,591 INFO L206 Difference]: Finished difference. Result has 432 places, 262 transitions [2020-02-10 23:30:11,591 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=15891, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16346, PETRI_PLACES=432, PETRI_TRANSITIONS=262} [2020-02-10 23:30:11,591 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 432 places, 262 transitions [2020-02-10 23:30:12,668 INFO L129 PetriNetUnfolder]: 85/915 cut-off events. [2020-02-10 23:30:12,668 INFO L130 PetriNetUnfolder]: For 189127/189260 co-relation queries the response was YES. [2020-02-10 23:30:12,694 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12517 conditions, 915 events. 85/915 cut-off events. For 189127/189260 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10502 event pairs. 5/906 useless extension candidates. Maximal degree in co-relation 12310. Up to 170 conditions per place. [2020-02-10 23:30:12,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 432 places, 262 transitions [2020-02-10 23:30:12,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 432 places, 262 transitions [2020-02-10 23:30:12,731 INFO L479 AbstractCegarLoop]: Abstraction has has 432 places, 262 transitions [2020-02-10 23:30:12,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:30:13,325 INFO L129 PetriNetUnfolder]: 85/846 cut-off events. [2020-02-10 23:30:13,325 INFO L130 PetriNetUnfolder]: For 189127/189260 co-relation queries the response was YES. [2020-02-10 23:30:13,325 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:13,325 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:13,325 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:13,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:13,326 INFO L82 PathProgramCache]: Analyzing trace with hash 413059018, now seen corresponding path program 46 times [2020-02-10 23:30:13,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:13,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363764201] [2020-02-10 23:30:13,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:13,488 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 23:30:13,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363764201] [2020-02-10 23:30:13,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:13,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:30:13,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103935996] [2020-02-10 23:30:13,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:30:13,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:13,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:30:13,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:30:13,489 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:30:13,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 262 transitions. Second operand 7 states. [2020-02-10 23:30:13,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:13,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:30:13,490 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:15,386 INFO L129 PetriNetUnfolder]: 86/917 cut-off events. [2020-02-10 23:30:15,387 INFO L130 PetriNetUnfolder]: For 196927/197635 co-relation queries the response was YES. [2020-02-10 23:30:15,412 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12834 conditions, 917 events. 86/917 cut-off events. For 196927/197635 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10466 event pairs. 6/910 useless extension candidates. Maximal degree in co-relation 12626. Up to 170 conditions per place. [2020-02-10 23:30:15,449 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 147 selfloop transitions, 106 changer transitions 3/268 dead transitions. [2020-02-10 23:30:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:30:15,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:30:15,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:30:15,450 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:30:15,450 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:30:15,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:30:15,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:15,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:30:15,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:30:15,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:30:15,452 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:30:15,452 INFO L178 Difference]: Start difference. First operand has 432 places, 262 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:30:15,456 INFO L206 Difference]: Finished difference. Result has 440 places, 260 transitions [2020-02-10 23:30:15,456 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=16346, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16400, PETRI_PLACES=440, PETRI_TRANSITIONS=260} [2020-02-10 23:30:15,456 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 440 places, 260 transitions [2020-02-10 23:30:16,542 INFO L129 PetriNetUnfolder]: 84/904 cut-off events. [2020-02-10 23:30:16,542 INFO L130 PetriNetUnfolder]: For 192635/192768 co-relation queries the response was YES. [2020-02-10 23:30:16,569 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12526 conditions, 904 events. 84/904 cut-off events. For 192635/192768 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10309 event pairs. 5/896 useless extension candidates. Maximal degree in co-relation 12316. Up to 168 conditions per place. [2020-02-10 23:30:16,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 440 places, 260 transitions [2020-02-10 23:30:16,605 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 438 places, 260 transitions [2020-02-10 23:30:16,605 INFO L479 AbstractCegarLoop]: Abstraction has has 438 places, 260 transitions [2020-02-10 23:30:16,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:30:17,191 INFO L129 PetriNetUnfolder]: 84/836 cut-off events. [2020-02-10 23:30:17,192 INFO L130 PetriNetUnfolder]: For 192635/192768 co-relation queries the response was YES. [2020-02-10 23:30:17,192 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:17,192 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:17,192 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:17,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1128020576, now seen corresponding path program 47 times [2020-02-10 23:30:17,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:17,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430954697] [2020-02-10 23:30:17,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:17,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430954697] [2020-02-10 23:30:17,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:17,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:30:17,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711998154] [2020-02-10 23:30:17,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:30:17,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:17,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:30:17,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:30:17,348 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:30:17,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 260 transitions. Second operand 7 states. [2020-02-10 23:30:17,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:17,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:30:17,348 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:19,269 INFO L129 PetriNetUnfolder]: 85/906 cut-off events. [2020-02-10 23:30:19,269 INFO L130 PetriNetUnfolder]: For 200494/201202 co-relation queries the response was YES. [2020-02-10 23:30:19,299 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12838 conditions, 906 events. 85/906 cut-off events. For 200494/201202 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10312 event pairs. 6/899 useless extension candidates. Maximal degree in co-relation 12627. Up to 169 conditions per place. [2020-02-10 23:30:19,335 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 101 changer transitions 2/265 dead transitions. [2020-02-10 23:30:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:30:19,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:30:19,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:30:19,336 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:30:19,336 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:30:19,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:30:19,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:19,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:30:19,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:30:19,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:30:19,337 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:30:19,337 INFO L178 Difference]: Start difference. First operand has 438 places, 260 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:30:19,342 INFO L206 Difference]: Finished difference. Result has 446 places, 260 transitions [2020-02-10 23:30:19,342 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=16400, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16631, PETRI_PLACES=446, PETRI_TRANSITIONS=260} [2020-02-10 23:30:19,342 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 446 places, 260 transitions [2020-02-10 23:30:20,420 INFO L129 PetriNetUnfolder]: 83/894 cut-off events. [2020-02-10 23:30:20,420 INFO L130 PetriNetUnfolder]: For 197937/198070 co-relation queries the response was YES. [2020-02-10 23:30:20,448 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12585 conditions, 894 events. 83/894 cut-off events. For 197937/198070 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10187 event pairs. 5/886 useless extension candidates. Maximal degree in co-relation 12372. Up to 166 conditions per place. [2020-02-10 23:30:20,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 446 places, 260 transitions [2020-02-10 23:30:20,485 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 445 places, 260 transitions [2020-02-10 23:30:20,485 INFO L479 AbstractCegarLoop]: Abstraction has has 445 places, 260 transitions [2020-02-10 23:30:20,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:30:21,083 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:30:21,083 INFO L130 PetriNetUnfolder]: For 197937/198070 co-relation queries the response was YES. [2020-02-10 23:30:21,083 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:21,083 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:21,083 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:21,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:21,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1606447848, now seen corresponding path program 48 times [2020-02-10 23:30:21,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:21,084 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74636104] [2020-02-10 23:30:21,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:21,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74636104] [2020-02-10 23:30:21,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:21,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:30:21,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689039420] [2020-02-10 23:30:21,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:30:21,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:21,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:30:21,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:30:21,231 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:30:21,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 260 transitions. Second operand 7 states. [2020-02-10 23:30:21,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:21,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:30:21,231 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:23,234 INFO L129 PetriNetUnfolder]: 84/896 cut-off events. [2020-02-10 23:30:23,234 INFO L130 PetriNetUnfolder]: For 207595/208581 co-relation queries the response was YES. [2020-02-10 23:30:23,262 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12893 conditions, 896 events. 84/896 cut-off events. For 207595/208581 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10192 event pairs. 33/917 useless extension candidates. Maximal degree in co-relation 12679. Up to 166 conditions per place. [2020-02-10 23:30:23,298 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 149 selfloop transitions, 106 changer transitions 0/267 dead transitions. [2020-02-10 23:30:23,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:30:23,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:30:23,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:30:23,299 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:30:23,300 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:30:23,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:30:23,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:23,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:30:23,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:30:23,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:30:23,301 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:30:23,301 INFO L178 Difference]: Start difference. First operand has 445 places, 260 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:30:23,307 INFO L206 Difference]: Finished difference. Result has 452 places, 260 transitions [2020-02-10 23:30:23,308 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=16631, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16846, PETRI_PLACES=452, PETRI_TRANSITIONS=260} [2020-02-10 23:30:23,308 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 452 places, 260 transitions [2020-02-10 23:30:24,407 INFO L129 PetriNetUnfolder]: 83/893 cut-off events. [2020-02-10 23:30:24,407 INFO L130 PetriNetUnfolder]: For 202163/202284 co-relation queries the response was YES. [2020-02-10 23:30:24,434 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12718 conditions, 893 events. 83/893 cut-off events. For 202163/202284 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10169 event pairs. 5/885 useless extension candidates. Maximal degree in co-relation 12503. Up to 166 conditions per place. [2020-02-10 23:30:24,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 452 places, 260 transitions [2020-02-10 23:30:24,471 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 452 places, 260 transitions [2020-02-10 23:30:24,471 INFO L479 AbstractCegarLoop]: Abstraction has has 452 places, 260 transitions [2020-02-10 23:30:24,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:30:25,078 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:30:25,078 INFO L130 PetriNetUnfolder]: For 203072/203275 co-relation queries the response was YES. [2020-02-10 23:30:25,078 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:25,078 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:25,079 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:25,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:25,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1147671310, now seen corresponding path program 49 times [2020-02-10 23:30:25,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:25,079 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496560739] [2020-02-10 23:30:25,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:25,229 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 23:30:25,230 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496560739] [2020-02-10 23:30:25,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:25,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:30:25,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230047163] [2020-02-10 23:30:25,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:30:25,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:25,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:30:25,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:30:25,231 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:30:25,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 260 transitions. Second operand 7 states. [2020-02-10 23:30:25,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:25,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:30:25,232 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:27,236 INFO L129 PetriNetUnfolder]: 84/895 cut-off events. [2020-02-10 23:30:27,236 INFO L130 PetriNetUnfolder]: For 211818/212801 co-relation queries the response was YES. [2020-02-10 23:30:27,263 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13025 conditions, 895 events. 84/895 cut-off events. For 211818/212801 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10153 event pairs. 9/891 useless extension candidates. Maximal degree in co-relation 12809. Up to 166 conditions per place. [2020-02-10 23:30:27,299 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 144 selfloop transitions, 107 changer transitions 0/263 dead transitions. [2020-02-10 23:30:27,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:30:27,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:30:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:30:27,301 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:30:27,301 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:30:27,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:30:27,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:27,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:30:27,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:30:27,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:30:27,302 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:30:27,303 INFO L178 Difference]: Start difference. First operand has 452 places, 260 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:30:27,309 INFO L206 Difference]: Finished difference. Result has 459 places, 260 transitions [2020-02-10 23:30:27,310 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=16846, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17063, PETRI_PLACES=459, PETRI_TRANSITIONS=260} [2020-02-10 23:30:27,310 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 459 places, 260 transitions [2020-02-10 23:30:28,498 INFO L129 PetriNetUnfolder]: 83/892 cut-off events. [2020-02-10 23:30:28,498 INFO L130 PetriNetUnfolder]: For 208182/208385 co-relation queries the response was YES. [2020-02-10 23:30:28,526 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12849 conditions, 892 events. 83/892 cut-off events. For 208182/208385 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10141 event pairs. 4/884 useless extension candidates. Maximal degree in co-relation 12632. Up to 166 conditions per place. [2020-02-10 23:30:28,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 459 places, 260 transitions [2020-02-10 23:30:28,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 260 transitions [2020-02-10 23:30:28,563 INFO L479 AbstractCegarLoop]: Abstraction has has 459 places, 260 transitions [2020-02-10 23:30:28,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:30:29,180 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:30:29,180 INFO L130 PetriNetUnfolder]: For 208182/208385 co-relation queries the response was YES. [2020-02-10 23:30:29,180 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:29,180 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:29,180 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:29,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:29,181 INFO L82 PathProgramCache]: Analyzing trace with hash -2106558308, now seen corresponding path program 50 times [2020-02-10 23:30:29,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:29,181 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015898344] [2020-02-10 23:30:29,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:29,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015898344] [2020-02-10 23:30:29,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:29,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:30:29,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229322243] [2020-02-10 23:30:29,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:30:29,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:29,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:30:29,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:30:29,315 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:30:29,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 260 transitions. Second operand 7 states. [2020-02-10 23:30:29,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:29,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:30:29,315 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:31,362 INFO L129 PetriNetUnfolder]: 84/894 cut-off events. [2020-02-10 23:30:31,362 INFO L130 PetriNetUnfolder]: For 217288/218271 co-relation queries the response was YES. [2020-02-10 23:30:31,390 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13154 conditions, 894 events. 84/894 cut-off events. For 217288/218271 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10143 event pairs. 46/929 useless extension candidates. Maximal degree in co-relation 12936. Up to 166 conditions per place. [2020-02-10 23:30:31,427 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 152 selfloop transitions, 105 changer transitions 0/269 dead transitions. [2020-02-10 23:30:31,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:30:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:30:31,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:30:31,428 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:30:31,428 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:30:31,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:30:31,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:31,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:30:31,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:30:31,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:30:31,429 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:30:31,429 INFO L178 Difference]: Start difference. First operand has 459 places, 260 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:30:31,434 INFO L206 Difference]: Finished difference. Result has 467 places, 262 transitions [2020-02-10 23:30:31,434 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=17063, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17440, PETRI_PLACES=467, PETRI_TRANSITIONS=262} [2020-02-10 23:30:31,434 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 467 places, 262 transitions [2020-02-10 23:30:32,555 INFO L129 PetriNetUnfolder]: 83/891 cut-off events. [2020-02-10 23:30:32,556 INFO L130 PetriNetUnfolder]: For 215054/215283 co-relation queries the response was YES. [2020-02-10 23:30:32,584 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12995 conditions, 891 events. 83/891 cut-off events. For 215054/215283 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10127 event pairs. 6/884 useless extension candidates. Maximal degree in co-relation 12775. Up to 166 conditions per place. [2020-02-10 23:30:32,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 467 places, 262 transitions [2020-02-10 23:30:32,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 467 places, 262 transitions [2020-02-10 23:30:32,621 INFO L479 AbstractCegarLoop]: Abstraction has has 467 places, 262 transitions [2020-02-10 23:30:32,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:30:33,254 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:30:33,254 INFO L130 PetriNetUnfolder]: For 213735/213891 co-relation queries the response was YES. [2020-02-10 23:30:33,254 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:33,254 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:33,254 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:33,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:33,254 INFO L82 PathProgramCache]: Analyzing trace with hash -2031973388, now seen corresponding path program 51 times [2020-02-10 23:30:33,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:33,255 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713148941] [2020-02-10 23:30:33,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:33,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713148941] [2020-02-10 23:30:33,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:33,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:30:33,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081184227] [2020-02-10 23:30:33,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:30:33,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:33,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:30:33,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:30:33,438 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:30:33,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 262 transitions. Second operand 7 states. [2020-02-10 23:30:33,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:33,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:30:33,439 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:35,623 INFO L129 PetriNetUnfolder]: 84/893 cut-off events. [2020-02-10 23:30:35,624 INFO L130 PetriNetUnfolder]: For 224294/225374 co-relation queries the response was YES. [2020-02-10 23:30:35,652 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13299 conditions, 893 events. 84/893 cut-off events. For 224294/225374 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10127 event pairs. 50/931 useless extension candidates. Maximal degree in co-relation 13078. Up to 166 conditions per place. [2020-02-10 23:30:35,691 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 156 selfloop transitions, 105 changer transitions 0/273 dead transitions. [2020-02-10 23:30:35,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:30:35,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:30:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:30:35,693 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:30:35,693 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:30:35,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:30:35,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:35,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:30:35,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:30:35,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:30:35,696 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:30:35,696 INFO L178 Difference]: Start difference. First operand has 467 places, 262 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:30:35,702 INFO L206 Difference]: Finished difference. Result has 475 places, 266 transitions [2020-02-10 23:30:35,702 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=17440, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17942, PETRI_PLACES=475, PETRI_TRANSITIONS=266} [2020-02-10 23:30:35,702 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 475 places, 266 transitions [2020-02-10 23:30:36,851 INFO L129 PetriNetUnfolder]: 83/890 cut-off events. [2020-02-10 23:30:36,851 INFO L130 PetriNetUnfolder]: For 219773/219929 co-relation queries the response was YES. [2020-02-10 23:30:36,880 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13165 conditions, 890 events. 83/890 cut-off events. For 219773/219929 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10091 event pairs. 4/882 useless extension candidates. Maximal degree in co-relation 12942. Up to 166 conditions per place. [2020-02-10 23:30:36,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 475 places, 266 transitions [2020-02-10 23:30:36,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 475 places, 266 transitions [2020-02-10 23:30:36,917 INFO L479 AbstractCegarLoop]: Abstraction has has 475 places, 266 transitions [2020-02-10 23:30:36,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:30:37,551 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:30:37,552 INFO L130 PetriNetUnfolder]: For 219508/219642 co-relation queries the response was YES. [2020-02-10 23:30:37,552 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:37,552 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:37,552 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:37,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:37,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1772946776, now seen corresponding path program 52 times [2020-02-10 23:30:37,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:37,552 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19114574] [2020-02-10 23:30:37,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:37,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19114574] [2020-02-10 23:30:37,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:37,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:30:37,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645836521] [2020-02-10 23:30:37,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:30:37,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:37,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:30:37,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:30:37,693 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:30:37,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 266 transitions. Second operand 7 states. [2020-02-10 23:30:37,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:37,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:30:37,694 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:39,867 INFO L129 PetriNetUnfolder]: 84/892 cut-off events. [2020-02-10 23:30:39,867 INFO L130 PetriNetUnfolder]: For 230236/231314 co-relation queries the response was YES. [2020-02-10 23:30:39,896 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13468 conditions, 892 events. 84/892 cut-off events. For 230236/231314 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10099 event pairs. 55/935 useless extension candidates. Maximal degree in co-relation 13244. Up to 166 conditions per place. [2020-02-10 23:30:39,935 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 156 selfloop transitions, 105 changer transitions 0/273 dead transitions. [2020-02-10 23:30:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:30:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:30:39,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:30:39,936 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:30:39,936 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:30:39,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:30:39,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:39,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:30:39,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:30:39,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:30:39,937 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:30:39,937 INFO L178 Difference]: Start difference. First operand has 475 places, 266 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:30:39,941 INFO L206 Difference]: Finished difference. Result has 482 places, 266 transitions [2020-02-10 23:30:39,942 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=17942, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18155, PETRI_PLACES=482, PETRI_TRANSITIONS=266} [2020-02-10 23:30:39,942 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 482 places, 266 transitions [2020-02-10 23:30:41,073 INFO L129 PetriNetUnfolder]: 83/889 cut-off events. [2020-02-10 23:30:41,073 INFO L130 PetriNetUnfolder]: For 223291/223421 co-relation queries the response was YES. [2020-02-10 23:30:41,098 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13291 conditions, 889 events. 83/889 cut-off events. For 223291/223421 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10073 event pairs. 4/880 useless extension candidates. Maximal degree in co-relation 13066. Up to 166 conditions per place. [2020-02-10 23:30:41,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 482 places, 266 transitions [2020-02-10 23:30:41,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 482 places, 266 transitions [2020-02-10 23:30:41,131 INFO L479 AbstractCegarLoop]: Abstraction has has 482 places, 266 transitions [2020-02-10 23:30:41,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:30:41,785 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:30:41,785 INFO L130 PetriNetUnfolder]: For 223291/223421 co-relation queries the response was YES. [2020-02-10 23:30:41,785 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:41,785 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:41,785 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:41,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:41,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1032615524, now seen corresponding path program 53 times [2020-02-10 23:30:41,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:41,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386357224] [2020-02-10 23:30:41,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:41,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386357224] [2020-02-10 23:30:41,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:41,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:30:41,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134098688] [2020-02-10 23:30:41,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:30:41,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:41,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:30:41,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:30:41,932 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:30:41,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 266 transitions. Second operand 7 states. [2020-02-10 23:30:41,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:41,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:30:41,933 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:44,163 INFO L129 PetriNetUnfolder]: 84/891 cut-off events. [2020-02-10 23:30:44,163 INFO L130 PetriNetUnfolder]: For 233279/234268 co-relation queries the response was YES. [2020-02-10 23:30:44,192 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13593 conditions, 891 events. 84/891 cut-off events. For 233279/234268 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10060 event pairs. 48/927 useless extension candidates. Maximal degree in co-relation 13367. Up to 166 conditions per place. [2020-02-10 23:30:44,231 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 156 selfloop transitions, 105 changer transitions 0/273 dead transitions. [2020-02-10 23:30:44,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:30:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:30:44,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:30:44,232 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:30:44,232 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:30:44,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:30:44,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:44,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:30:44,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:30:44,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:30:44,233 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:30:44,233 INFO L178 Difference]: Start difference. First operand has 482 places, 266 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:30:44,238 INFO L206 Difference]: Finished difference. Result has 489 places, 266 transitions [2020-02-10 23:30:44,238 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=18155, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18368, PETRI_PLACES=489, PETRI_TRANSITIONS=266} [2020-02-10 23:30:44,239 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 489 places, 266 transitions [2020-02-10 23:30:45,391 INFO L129 PetriNetUnfolder]: 83/888 cut-off events. [2020-02-10 23:30:45,391 INFO L130 PetriNetUnfolder]: For 227669/227799 co-relation queries the response was YES. [2020-02-10 23:30:45,419 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13413 conditions, 888 events. 83/888 cut-off events. For 227669/227799 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10079 event pairs. 4/878 useless extension candidates. Maximal degree in co-relation 13186. Up to 166 conditions per place. [2020-02-10 23:30:45,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 489 places, 266 transitions [2020-02-10 23:30:45,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 489 places, 266 transitions [2020-02-10 23:30:45,457 INFO L479 AbstractCegarLoop]: Abstraction has has 489 places, 266 transitions [2020-02-10 23:30:45,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:30:46,122 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:30:46,122 INFO L130 PetriNetUnfolder]: For 228763/228988 co-relation queries the response was YES. [2020-02-10 23:30:46,122 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:46,122 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:46,122 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:46,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:46,123 INFO L82 PathProgramCache]: Analyzing trace with hash -867301984, now seen corresponding path program 54 times [2020-02-10 23:30:46,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:46,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443014920] [2020-02-10 23:30:46,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:46,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443014920] [2020-02-10 23:30:46,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:46,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:30:46,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750330816] [2020-02-10 23:30:46,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:30:46,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:46,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:30:46,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:30:46,259 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:30:46,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 266 transitions. Second operand 7 states. [2020-02-10 23:30:46,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:46,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:30:46,259 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:48,516 INFO L129 PetriNetUnfolder]: 84/890 cut-off events. [2020-02-10 23:30:48,516 INFO L130 PetriNetUnfolder]: For 236696/237614 co-relation queries the response was YES. [2020-02-10 23:30:48,543 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13714 conditions, 890 events. 84/890 cut-off events. For 236696/237614 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10089 event pairs. 33/912 useless extension candidates. Maximal degree in co-relation 13486. Up to 166 conditions per place. [2020-02-10 23:30:48,578 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 153 selfloop transitions, 112 changer transitions 0/277 dead transitions. [2020-02-10 23:30:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:30:48,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:30:48,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:30:48,579 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:30:48,579 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:30:48,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:30:48,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:48,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:30:48,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:30:48,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:30:48,581 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:30:48,581 INFO L178 Difference]: Start difference. First operand has 489 places, 266 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:30:48,586 INFO L206 Difference]: Finished difference. Result has 499 places, 271 transitions [2020-02-10 23:30:48,587 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=18368, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19001, PETRI_PLACES=499, PETRI_TRANSITIONS=271} [2020-02-10 23:30:48,587 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 499 places, 271 transitions [2020-02-10 23:30:49,799 INFO L129 PetriNetUnfolder]: 83/887 cut-off events. [2020-02-10 23:30:49,799 INFO L130 PetriNetUnfolder]: For 235715/235950 co-relation queries the response was YES. [2020-02-10 23:30:49,828 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13568 conditions, 887 events. 83/887 cut-off events. For 235715/235950 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10037 event pairs. 5/877 useless extension candidates. Maximal degree in co-relation 13336. Up to 166 conditions per place. [2020-02-10 23:30:49,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 499 places, 271 transitions [2020-02-10 23:30:49,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 499 places, 271 transitions [2020-02-10 23:30:49,867 INFO L479 AbstractCegarLoop]: Abstraction has has 499 places, 271 transitions [2020-02-10 23:30:49,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:30:50,564 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:30:50,564 INFO L130 PetriNetUnfolder]: For 235715/235950 co-relation queries the response was YES. [2020-02-10 23:30:50,565 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:50,565 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:50,565 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:50,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:50,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1235091198, now seen corresponding path program 55 times [2020-02-10 23:30:50,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:50,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469980051] [2020-02-10 23:30:50,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:50,702 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 23:30:50,703 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469980051] [2020-02-10 23:30:50,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:50,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:30:50,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670740483] [2020-02-10 23:30:50,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:30:50,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:50,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:30:50,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:30:50,704 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:30:50,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 271 transitions. Second operand 7 states. [2020-02-10 23:30:50,705 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:50,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:30:50,705 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:53,080 INFO L129 PetriNetUnfolder]: 84/889 cut-off events. [2020-02-10 23:30:53,081 INFO L130 PetriNetUnfolder]: For 243887/244879 co-relation queries the response was YES. [2020-02-10 23:30:53,112 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13868 conditions, 889 events. 84/889 cut-off events. For 243887/244879 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10047 event pairs. 33/910 useless extension candidates. Maximal degree in co-relation 13635. Up to 166 conditions per place. [2020-02-10 23:30:53,151 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 157 selfloop transitions, 109 changer transitions 0/278 dead transitions. [2020-02-10 23:30:53,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:30:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:30:53,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:30:53,152 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:30:53,152 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:30:53,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:30:53,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:53,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:30:53,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:30:53,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:30:53,153 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:30:53,153 INFO L178 Difference]: Start difference. First operand has 499 places, 271 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:30:53,158 INFO L206 Difference]: Finished difference. Result has 506 places, 271 transitions [2020-02-10 23:30:53,158 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=19001, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19222, PETRI_PLACES=506, PETRI_TRANSITIONS=271} [2020-02-10 23:30:53,159 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 506 places, 271 transitions [2020-02-10 23:30:54,373 INFO L129 PetriNetUnfolder]: 83/886 cut-off events. [2020-02-10 23:30:54,373 INFO L130 PetriNetUnfolder]: For 240040/240273 co-relation queries the response was YES. [2020-02-10 23:30:54,403 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13688 conditions, 886 events. 83/886 cut-off events. For 240040/240273 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10059 event pairs. 5/877 useless extension candidates. Maximal degree in co-relation 13454. Up to 166 conditions per place. [2020-02-10 23:30:54,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 506 places, 271 transitions [2020-02-10 23:30:54,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 506 places, 271 transitions [2020-02-10 23:30:54,442 INFO L479 AbstractCegarLoop]: Abstraction has has 506 places, 271 transitions [2020-02-10 23:30:54,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:30:55,163 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:30:55,163 INFO L130 PetriNetUnfolder]: For 238941/239077 co-relation queries the response was YES. [2020-02-10 23:30:55,163 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:55,163 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:55,163 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:55,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:55,164 INFO L82 PathProgramCache]: Analyzing trace with hash 300689700, now seen corresponding path program 56 times [2020-02-10 23:30:55,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:55,164 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214543579] [2020-02-10 23:30:55,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:55,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214543579] [2020-02-10 23:30:55,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:55,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:30:55,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823757561] [2020-02-10 23:30:55,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:30:55,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:55,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:30:55,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:30:55,324 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:30:55,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 271 transitions. Second operand 7 states. [2020-02-10 23:30:55,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:55,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:30:55,324 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:57,772 INFO L129 PetriNetUnfolder]: 84/888 cut-off events. [2020-02-10 23:30:57,772 INFO L130 PetriNetUnfolder]: For 247637/248599 co-relation queries the response was YES. [2020-02-10 23:30:57,803 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13987 conditions, 888 events. 84/888 cut-off events. For 247637/248599 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10036 event pairs. 8/883 useless extension candidates. Maximal degree in co-relation 13752. Up to 166 conditions per place. [2020-02-10 23:30:57,843 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 151 selfloop transitions, 106 changer transitions 5/274 dead transitions. [2020-02-10 23:30:57,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:30:57,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:30:57,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:30:57,844 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:30:57,844 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:30:57,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:30:57,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:57,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:30:57,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:30:57,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:30:57,845 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:30:57,845 INFO L178 Difference]: Start difference. First operand has 506 places, 271 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:30:57,850 INFO L206 Difference]: Finished difference. Result has 513 places, 266 transitions [2020-02-10 23:30:57,850 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=19222, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19045, PETRI_PLACES=513, PETRI_TRANSITIONS=266} [2020-02-10 23:30:57,850 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 513 places, 266 transitions [2020-02-10 23:30:59,030 INFO L129 PetriNetUnfolder]: 81/867 cut-off events. [2020-02-10 23:30:59,031 INFO L130 PetriNetUnfolder]: For 240408/240544 co-relation queries the response was YES. [2020-02-10 23:30:59,060 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13598 conditions, 867 events. 81/867 cut-off events. For 240408/240544 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9819 event pairs. 4/859 useless extension candidates. Maximal degree in co-relation 13362. Up to 162 conditions per place. [2020-02-10 23:30:59,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 513 places, 266 transitions [2020-02-10 23:30:59,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 511 places, 266 transitions [2020-02-10 23:30:59,704 INFO L479 AbstractCegarLoop]: Abstraction has has 511 places, 266 transitions [2020-02-10 23:30:59,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:31:00,392 INFO L129 PetriNetUnfolder]: 81/809 cut-off events. [2020-02-10 23:31:00,393 INFO L130 PetriNetUnfolder]: For 240408/240544 co-relation queries the response was YES. [2020-02-10 23:31:00,393 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:00,393 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:00,393 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:00,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:00,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1888350880, now seen corresponding path program 57 times [2020-02-10 23:31:00,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:00,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076096095] [2020-02-10 23:31:00,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:31:00,588 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076096095] [2020-02-10 23:31:00,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:00,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:31:00,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848203911] [2020-02-10 23:31:00,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:31:00,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:00,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:31:00,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:31:00,589 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:31:00,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 266 transitions. Second operand 7 states. [2020-02-10 23:31:00,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:00,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:31:00,589 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:02,928 INFO L129 PetriNetUnfolder]: 82/869 cut-off events. [2020-02-10 23:31:02,928 INFO L130 PetriNetUnfolder]: For 249128/250090 co-relation queries the response was YES. [2020-02-10 23:31:02,962 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13890 conditions, 869 events. 82/869 cut-off events. For 249128/250090 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9783 event pairs. 23/879 useless extension candidates. Maximal degree in co-relation 13653. Up to 162 conditions per place. [2020-02-10 23:31:03,078 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 151 selfloop transitions, 104 changer transitions 2/269 dead transitions. [2020-02-10 23:31:03,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:31:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:31:03,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:31:03,080 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:31:03,080 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:31:03,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:31:03,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:03,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:31:03,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:31:03,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:31:03,081 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:31:03,081 INFO L178 Difference]: Start difference. First operand has 511 places, 266 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:31:03,086 INFO L206 Difference]: Finished difference. Result has 518 places, 264 transitions [2020-02-10 23:31:03,087 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=19045, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19085, PETRI_PLACES=518, PETRI_TRANSITIONS=264} [2020-02-10 23:31:03,087 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 518 places, 264 transitions [2020-02-10 23:31:04,280 INFO L129 PetriNetUnfolder]: 80/857 cut-off events. [2020-02-10 23:31:04,280 INFO L130 PetriNetUnfolder]: For 243820/243956 co-relation queries the response was YES. [2020-02-10 23:31:04,310 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13617 conditions, 857 events. 80/857 cut-off events. For 243820/243956 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9646 event pairs. 4/849 useless extension candidates. Maximal degree in co-relation 13379. Up to 160 conditions per place. [2020-02-10 23:31:04,311 INFO L82 GeneralOperation]: Start removeDead. Operand has 518 places, 264 transitions [2020-02-10 23:31:04,349 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 517 places, 264 transitions [2020-02-10 23:31:04,349 INFO L479 AbstractCegarLoop]: Abstraction has has 517 places, 264 transitions [2020-02-10 23:31:04,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:31:05,041 INFO L129 PetriNetUnfolder]: 80/800 cut-off events. [2020-02-10 23:31:05,041 INFO L130 PetriNetUnfolder]: For 243820/243956 co-relation queries the response was YES. [2020-02-10 23:31:05,041 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:05,042 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:05,042 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:05,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:05,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2028906104, now seen corresponding path program 58 times [2020-02-10 23:31:05,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:05,042 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003687560] [2020-02-10 23:31:05,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:05,169 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 23:31:05,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003687560] [2020-02-10 23:31:05,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:05,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:31:05,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913212636] [2020-02-10 23:31:05,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:31:05,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:05,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:31:05,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:31:05,171 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:31:05,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 264 transitions. Second operand 7 states. [2020-02-10 23:31:05,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:05,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:31:05,171 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:07,453 INFO L129 PetriNetUnfolder]: 81/859 cut-off events. [2020-02-10 23:31:07,453 INFO L130 PetriNetUnfolder]: For 250971/251718 co-relation queries the response was YES. [2020-02-10 23:31:07,482 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13905 conditions, 859 events. 81/859 cut-off events. For 250971/251718 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9632 event pairs. 40/888 useless extension candidates. Maximal degree in co-relation 13666. Up to 160 conditions per place. [2020-02-10 23:31:07,518 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 153 selfloop transitions, 104 changer transitions 0/269 dead transitions. [2020-02-10 23:31:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:31:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:31:07,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:31:07,519 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:31:07,519 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:31:07,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:31:07,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:07,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:31:07,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:31:07,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:31:07,520 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:31:07,520 INFO L178 Difference]: Start difference. First operand has 517 places, 264 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:31:07,527 INFO L206 Difference]: Finished difference. Result has 524 places, 264 transitions [2020-02-10 23:31:07,528 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=19085, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19296, PETRI_PLACES=524, PETRI_TRANSITIONS=264} [2020-02-10 23:31:07,528 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 524 places, 264 transitions [2020-02-10 23:31:08,725 INFO L129 PetriNetUnfolder]: 80/856 cut-off events. [2020-02-10 23:31:08,725 INFO L130 PetriNetUnfolder]: For 248219/248354 co-relation queries the response was YES. [2020-02-10 23:31:08,754 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13724 conditions, 856 events. 80/856 cut-off events. For 248219/248354 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9678 event pairs. 3/847 useless extension candidates. Maximal degree in co-relation 13484. Up to 160 conditions per place. [2020-02-10 23:31:08,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 524 places, 264 transitions [2020-02-10 23:31:08,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 524 places, 264 transitions [2020-02-10 23:31:08,793 INFO L479 AbstractCegarLoop]: Abstraction has has 524 places, 264 transitions [2020-02-10 23:31:08,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:31:09,498 INFO L129 PetriNetUnfolder]: 80/800 cut-off events. [2020-02-10 23:31:09,498 INFO L130 PetriNetUnfolder]: For 248219/248354 co-relation queries the response was YES. [2020-02-10 23:31:09,498 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:09,498 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:09,498 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:09,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:09,499 INFO L82 PathProgramCache]: Analyzing trace with hash -582592732, now seen corresponding path program 59 times [2020-02-10 23:31:09,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:09,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394130425] [2020-02-10 23:31:09,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:31:09,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394130425] [2020-02-10 23:31:09,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:09,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:31:09,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109753058] [2020-02-10 23:31:09,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:31:09,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:09,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:31:09,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:31:09,666 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:31:09,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 264 transitions. Second operand 7 states. [2020-02-10 23:31:09,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:09,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:31:09,667 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:11,971 INFO L129 PetriNetUnfolder]: 81/858 cut-off events. [2020-02-10 23:31:11,971 INFO L130 PetriNetUnfolder]: For 255258/255993 co-relation queries the response was YES. [2020-02-10 23:31:12,001 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14011 conditions, 858 events. 81/858 cut-off events. For 255258/255993 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9620 event pairs. 5/851 useless extension candidates. Maximal degree in co-relation 13770. Up to 161 conditions per place. [2020-02-10 23:31:12,040 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 151 selfloop transitions, 100 changer transitions 3/266 dead transitions. [2020-02-10 23:31:12,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:31:12,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:31:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:31:12,042 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:31:12,042 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:31:12,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:31:12,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:12,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:31:12,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:31:12,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:31:12,043 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:31:12,043 INFO L178 Difference]: Start difference. First operand has 524 places, 264 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:31:12,051 INFO L206 Difference]: Finished difference. Result has 531 places, 261 transitions [2020-02-10 23:31:12,051 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=19296, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19242, PETRI_PLACES=531, PETRI_TRANSITIONS=261} [2020-02-10 23:31:12,052 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 531 places, 261 transitions [2020-02-10 23:31:13,301 INFO L129 PetriNetUnfolder]: 79/845 cut-off events. [2020-02-10 23:31:13,301 INFO L130 PetriNetUnfolder]: For 250822/250957 co-relation queries the response was YES. [2020-02-10 23:31:13,326 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13696 conditions, 845 events. 79/845 cut-off events. For 250822/250957 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9508 event pairs. 3/836 useless extension candidates. Maximal degree in co-relation 13454. Up to 158 conditions per place. [2020-02-10 23:31:13,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 531 places, 261 transitions [2020-02-10 23:31:13,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 530 places, 261 transitions [2020-02-10 23:31:13,359 INFO L479 AbstractCegarLoop]: Abstraction has has 530 places, 261 transitions [2020-02-10 23:31:13,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:31:14,051 INFO L129 PetriNetUnfolder]: 79/790 cut-off events. [2020-02-10 23:31:14,051 INFO L130 PetriNetUnfolder]: For 250018/250118 co-relation queries the response was YES. [2020-02-10 23:31:14,051 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:14,051 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:14,051 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:14,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:14,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1145064548, now seen corresponding path program 60 times [2020-02-10 23:31:14,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:14,052 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897606669] [2020-02-10 23:31:14,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:14,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:31:14,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897606669] [2020-02-10 23:31:14,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:14,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:31:14,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614446012] [2020-02-10 23:31:14,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:31:14,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:14,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:31:14,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:31:14,200 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:31:14,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 261 transitions. Second operand 7 states. [2020-02-10 23:31:14,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:14,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:31:14,201 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:16,619 INFO L129 PetriNetUnfolder]: 80/847 cut-off events. [2020-02-10 23:31:16,619 INFO L130 PetriNetUnfolder]: For 257913/258648 co-relation queries the response was YES. [2020-02-10 23:31:16,645 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13978 conditions, 847 events. 80/847 cut-off events. For 257913/258648 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9464 event pairs. 5/840 useless extension candidates. Maximal degree in co-relation 13735. Up to 158 conditions per place. [2020-02-10 23:31:16,679 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 107 changer transitions 0/269 dead transitions. [2020-02-10 23:31:16,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:31:16,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:31:16,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:31:16,682 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:31:16,682 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:31:16,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:31:16,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:16,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:31:16,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:31:16,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:31:16,683 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:31:16,684 INFO L178 Difference]: Start difference. First operand has 530 places, 261 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:31:16,690 INFO L206 Difference]: Finished difference. Result has 539 places, 264 transitions [2020-02-10 23:31:16,691 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=19242, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19753, PETRI_PLACES=539, PETRI_TRANSITIONS=264} [2020-02-10 23:31:16,691 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 539 places, 264 transitions [2020-02-10 23:31:17,900 INFO L129 PetriNetUnfolder]: 79/844 cut-off events. [2020-02-10 23:31:17,900 INFO L130 PetriNetUnfolder]: For 256299/256399 co-relation queries the response was YES. [2020-02-10 23:31:17,931 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13824 conditions, 844 events. 79/844 cut-off events. For 256299/256399 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9521 event pairs. 1/832 useless extension candidates. Maximal degree in co-relation 13578. Up to 158 conditions per place. [2020-02-10 23:31:17,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 539 places, 264 transitions [2020-02-10 23:31:17,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 539 places, 264 transitions [2020-02-10 23:31:17,970 INFO L479 AbstractCegarLoop]: Abstraction has has 539 places, 264 transitions [2020-02-10 23:31:17,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:31:18,682 INFO L129 PetriNetUnfolder]: 79/790 cut-off events. [2020-02-10 23:31:18,682 INFO L130 PetriNetUnfolder]: For 256299/256399 co-relation queries the response was YES. [2020-02-10 23:31:18,682 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:18,682 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:18,682 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:18,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:18,683 INFO L82 PathProgramCache]: Analyzing trace with hash -177737572, now seen corresponding path program 61 times [2020-02-10 23:31:18,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:18,683 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532017521] [2020-02-10 23:31:18,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:18,840 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 23:31:18,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532017521] [2020-02-10 23:31:18,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:18,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:31:18,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744007595] [2020-02-10 23:31:18,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:31:18,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:18,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:31:18,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:31:18,843 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:31:18,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 264 transitions. Second operand 7 states. [2020-02-10 23:31:18,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:18,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:31:18,843 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:21,207 INFO L129 PetriNetUnfolder]: 80/846 cut-off events. [2020-02-10 23:31:21,207 INFO L130 PetriNetUnfolder]: For 264694/265439 co-relation queries the response was YES. [2020-02-10 23:31:21,236 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14104 conditions, 846 events. 80/846 cut-off events. For 264694/265439 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9464 event pairs. 5/839 useless extension candidates. Maximal degree in co-relation 13857. Up to 159 conditions per place. [2020-02-10 23:31:21,273 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 102 changer transitions 3/267 dead transitions. [2020-02-10 23:31:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:31:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:31:21,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:31:21,275 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:31:21,275 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:31:21,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:31:21,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:21,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:31:21,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:31:21,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:31:21,276 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:31:21,276 INFO L178 Difference]: Start difference. First operand has 539 places, 264 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:31:21,282 INFO L206 Difference]: Finished difference. Result has 546 places, 261 transitions [2020-02-10 23:31:21,282 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=19753, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19713, PETRI_PLACES=546, PETRI_TRANSITIONS=261} [2020-02-10 23:31:21,282 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 546 places, 261 transitions [2020-02-10 23:31:22,473 INFO L129 PetriNetUnfolder]: 78/833 cut-off events. [2020-02-10 23:31:22,473 INFO L130 PetriNetUnfolder]: For 258790/258890 co-relation queries the response was YES. [2020-02-10 23:31:22,504 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13797 conditions, 833 events. 78/833 cut-off events. For 258790/258890 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9374 event pairs. 1/821 useless extension candidates. Maximal degree in co-relation 13549. Up to 156 conditions per place. [2020-02-10 23:31:22,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 546 places, 261 transitions [2020-02-10 23:31:22,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 545 places, 261 transitions [2020-02-10 23:31:22,543 INFO L479 AbstractCegarLoop]: Abstraction has has 545 places, 261 transitions [2020-02-10 23:31:22,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:31:23,251 INFO L129 PetriNetUnfolder]: 78/780 cut-off events. [2020-02-10 23:31:23,251 INFO L130 PetriNetUnfolder]: For 259436/259567 co-relation queries the response was YES. [2020-02-10 23:31:23,251 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:23,251 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:23,251 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:23,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:23,252 INFO L82 PathProgramCache]: Analyzing trace with hash 64082826, now seen corresponding path program 62 times [2020-02-10 23:31:23,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:23,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157826064] [2020-02-10 23:31:23,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:31:23,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157826064] [2020-02-10 23:31:23,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:23,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:31:23,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849799953] [2020-02-10 23:31:23,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:31:23,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:23,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:31:23,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:31:23,392 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:31:23,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 261 transitions. Second operand 7 states. [2020-02-10 23:31:23,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:23,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:31:23,392 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:25,762 INFO L129 PetriNetUnfolder]: 79/835 cut-off events. [2020-02-10 23:31:25,762 INFO L130 PetriNetUnfolder]: For 267302/268047 co-relation queries the response was YES. [2020-02-10 23:31:25,793 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14072 conditions, 835 events. 79/835 cut-off events. For 267302/268047 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9282 event pairs. 26/851 useless extension candidates. Maximal degree in co-relation 13823. Up to 156 conditions per place. [2020-02-10 23:31:25,832 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 104 changer transitions 0/266 dead transitions. [2020-02-10 23:31:25,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:31:25,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:31:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:31:25,833 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:31:25,834 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:31:25,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:31:25,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:25,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:31:25,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:31:25,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:31:25,835 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:31:25,835 INFO L178 Difference]: Start difference. First operand has 545 places, 261 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:31:25,840 INFO L206 Difference]: Finished difference. Result has 552 places, 261 transitions [2020-02-10 23:31:25,840 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=19713, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19924, PETRI_PLACES=552, PETRI_TRANSITIONS=261} [2020-02-10 23:31:25,840 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 552 places, 261 transitions [2020-02-10 23:31:27,038 INFO L129 PetriNetUnfolder]: 78/832 cut-off events. [2020-02-10 23:31:27,039 INFO L130 PetriNetUnfolder]: For 263823/263958 co-relation queries the response was YES. [2020-02-10 23:31:27,064 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13897 conditions, 832 events. 78/832 cut-off events. For 263823/263958 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9352 event pairs. 3/820 useless extension candidates. Maximal degree in co-relation 13647. Up to 156 conditions per place. [2020-02-10 23:31:27,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 552 places, 261 transitions [2020-02-10 23:31:27,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 552 places, 261 transitions [2020-02-10 23:31:27,097 INFO L479 AbstractCegarLoop]: Abstraction has has 552 places, 261 transitions [2020-02-10 23:31:27,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:31:27,837 INFO L129 PetriNetUnfolder]: 78/780 cut-off events. [2020-02-10 23:31:27,837 INFO L130 PetriNetUnfolder]: For 263823/263958 co-relation queries the response was YES. [2020-02-10 23:31:27,837 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:27,837 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:27,837 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:27,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:27,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1275901088, now seen corresponding path program 63 times [2020-02-10 23:31:27,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:27,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116256555] [2020-02-10 23:31:27,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:27,996 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 23:31:27,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116256555] [2020-02-10 23:31:27,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:27,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:31:27,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241194683] [2020-02-10 23:31:27,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:31:27,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:27,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:31:27,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:31:27,998 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:31:27,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 261 transitions. Second operand 7 states. [2020-02-10 23:31:27,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:27,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:31:27,999 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:30,452 INFO L129 PetriNetUnfolder]: 79/834 cut-off events. [2020-02-10 23:31:30,452 INFO L130 PetriNetUnfolder]: For 271737/272501 co-relation queries the response was YES. [2020-02-10 23:31:30,479 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14171 conditions, 834 events. 79/834 cut-off events. For 271737/272501 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9295 event pairs. 38/862 useless extension candidates. Maximal degree in co-relation 13920. Up to 156 conditions per place. [2020-02-10 23:31:30,513 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 147 selfloop transitions, 109 changer transitions 0/268 dead transitions. [2020-02-10 23:31:30,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:31:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:31:30,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:31:30,514 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:31:30,514 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:31:30,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:31:30,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:30,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:31:30,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:31:30,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:31:30,516 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:31:30,516 INFO L178 Difference]: Start difference. First operand has 552 places, 261 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:31:30,522 INFO L206 Difference]: Finished difference. Result has 560 places, 263 transitions [2020-02-10 23:31:30,522 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=19924, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20298, PETRI_PLACES=560, PETRI_TRANSITIONS=263} [2020-02-10 23:31:30,522 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 560 places, 263 transitions [2020-02-10 23:31:31,736 INFO L129 PetriNetUnfolder]: 78/831 cut-off events. [2020-02-10 23:31:31,736 INFO L130 PetriNetUnfolder]: For 269385/269520 co-relation queries the response was YES. [2020-02-10 23:31:31,767 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14017 conditions, 831 events. 78/831 cut-off events. For 269385/269520 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9320 event pairs. 3/820 useless extension candidates. Maximal degree in co-relation 13764. Up to 156 conditions per place. [2020-02-10 23:31:31,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 560 places, 263 transitions [2020-02-10 23:31:31,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 560 places, 263 transitions [2020-02-10 23:31:31,806 INFO L479 AbstractCegarLoop]: Abstraction has has 560 places, 263 transitions [2020-02-10 23:31:31,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:31:32,534 INFO L129 PetriNetUnfolder]: 78/780 cut-off events. [2020-02-10 23:31:32,534 INFO L130 PetriNetUnfolder]: For 269385/269520 co-relation queries the response was YES. [2020-02-10 23:31:32,534 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:32,534 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:32,534 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:32,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:32,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1866915970, now seen corresponding path program 64 times [2020-02-10 23:31:32,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:32,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36894074] [2020-02-10 23:31:32,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:32,682 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 23:31:32,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36894074] [2020-02-10 23:31:32,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:32,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:31:32,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914256587] [2020-02-10 23:31:32,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:31:32,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:32,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:31:32,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:31:32,683 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:31:32,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 263 transitions. Second operand 7 states. [2020-02-10 23:31:32,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:32,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:31:32,684 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:35,103 INFO L129 PetriNetUnfolder]: 79/833 cut-off events. [2020-02-10 23:31:35,103 INFO L130 PetriNetUnfolder]: For 276805/277488 co-relation queries the response was YES. [2020-02-10 23:31:35,134 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14290 conditions, 833 events. 79/833 cut-off events. For 276805/277488 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9271 event pairs. 35/858 useless extension candidates. Maximal degree in co-relation 14036. Up to 156 conditions per place. [2020-02-10 23:31:35,172 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 151 selfloop transitions, 105 changer transitions 0/268 dead transitions. [2020-02-10 23:31:35,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:31:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:31:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:31:35,173 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:31:35,173 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:31:35,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:31:35,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:35,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:31:35,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:31:35,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:31:35,175 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:31:35,175 INFO L178 Difference]: Start difference. First operand has 560 places, 263 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:31:35,180 INFO L206 Difference]: Finished difference. Result has 567 places, 263 transitions [2020-02-10 23:31:35,180 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=20298, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20511, PETRI_PLACES=567, PETRI_TRANSITIONS=263} [2020-02-10 23:31:35,180 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 567 places, 263 transitions [2020-02-10 23:31:36,419 INFO L129 PetriNetUnfolder]: 78/830 cut-off events. [2020-02-10 23:31:36,419 INFO L130 PetriNetUnfolder]: For 273584/273719 co-relation queries the response was YES. [2020-02-10 23:31:36,451 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14111 conditions, 830 events. 78/830 cut-off events. For 273584/273719 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9276 event pairs. 3/819 useless extension candidates. Maximal degree in co-relation 13856. Up to 156 conditions per place. [2020-02-10 23:31:36,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 567 places, 263 transitions [2020-02-10 23:31:36,490 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 567 places, 263 transitions [2020-02-10 23:31:36,491 INFO L479 AbstractCegarLoop]: Abstraction has has 567 places, 263 transitions [2020-02-10 23:31:36,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:31:37,226 INFO L129 PetriNetUnfolder]: 78/780 cut-off events. [2020-02-10 23:31:37,226 INFO L130 PetriNetUnfolder]: For 273584/273719 co-relation queries the response was YES. [2020-02-10 23:31:37,227 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:37,227 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:37,227 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:37,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:37,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1336744840, now seen corresponding path program 65 times [2020-02-10 23:31:37,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:37,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864187729] [2020-02-10 23:31:37,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:37,437 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 23:31:37,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864187729] [2020-02-10 23:31:37,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:37,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:31:37,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168220969] [2020-02-10 23:31:37,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:31:37,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:37,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:31:37,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:31:37,439 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:31:37,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 263 transitions. Second operand 7 states. [2020-02-10 23:31:37,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:37,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:31:37,440 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:39,870 INFO L129 PetriNetUnfolder]: 79/832 cut-off events. [2020-02-10 23:31:39,870 INFO L130 PetriNetUnfolder]: For 280976/281664 co-relation queries the response was YES. [2020-02-10 23:31:39,902 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14383 conditions, 832 events. 79/832 cut-off events. For 280976/281664 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9249 event pairs. 35/856 useless extension candidates. Maximal degree in co-relation 14127. Up to 156 conditions per place. [2020-02-10 23:31:39,942 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 148 selfloop transitions, 108 changer transitions 0/268 dead transitions. [2020-02-10 23:31:39,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:31:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:31:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:31:39,943 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:31:39,943 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:31:39,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:31:39,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:39,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:31:39,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:31:39,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:31:39,944 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:31:39,944 INFO L178 Difference]: Start difference. First operand has 567 places, 263 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:31:39,949 INFO L206 Difference]: Finished difference. Result has 574 places, 263 transitions [2020-02-10 23:31:39,950 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=20511, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20730, PETRI_PLACES=574, PETRI_TRANSITIONS=263} [2020-02-10 23:31:39,950 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 574 places, 263 transitions [2020-02-10 23:31:41,105 INFO L129 PetriNetUnfolder]: 78/829 cut-off events. [2020-02-10 23:31:41,105 INFO L130 PetriNetUnfolder]: For 277648/277783 co-relation queries the response was YES. [2020-02-10 23:31:41,133 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14206 conditions, 829 events. 78/829 cut-off events. For 277648/277783 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9302 event pairs. 3/817 useless extension candidates. Maximal degree in co-relation 13949. Up to 156 conditions per place. [2020-02-10 23:31:41,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 574 places, 263 transitions [2020-02-10 23:31:41,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 574 places, 263 transitions [2020-02-10 23:31:41,167 INFO L479 AbstractCegarLoop]: Abstraction has has 574 places, 263 transitions [2020-02-10 23:31:41,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:31:41,911 INFO L129 PetriNetUnfolder]: 78/780 cut-off events. [2020-02-10 23:31:41,911 INFO L130 PetriNetUnfolder]: For 277648/277783 co-relation queries the response was YES. [2020-02-10 23:31:41,911 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:41,911 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:41,911 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:41,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:41,911 INFO L82 PathProgramCache]: Analyzing trace with hash 318568842, now seen corresponding path program 66 times [2020-02-10 23:31:41,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:41,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268299580] [2020-02-10 23:31:41,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:31:42,075 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268299580] [2020-02-10 23:31:42,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:42,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:31:42,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348369644] [2020-02-10 23:31:42,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:31:42,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:42,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:31:42,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:31:42,076 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:31:42,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 263 transitions. Second operand 7 states. [2020-02-10 23:31:42,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:42,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:31:42,077 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:44,702 INFO L129 PetriNetUnfolder]: 79/831 cut-off events. [2020-02-10 23:31:44,703 INFO L130 PetriNetUnfolder]: For 284642/285310 co-relation queries the response was YES. [2020-02-10 23:31:44,731 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14477 conditions, 831 events. 79/831 cut-off events. For 284642/285310 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9239 event pairs. 21/842 useless extension candidates. Maximal degree in co-relation 14219. Up to 156 conditions per place. [2020-02-10 23:31:44,767 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 106 changer transitions 0/268 dead transitions. [2020-02-10 23:31:44,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:31:44,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:31:44,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:31:44,768 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:31:44,768 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:31:44,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:31:44,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:44,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:31:44,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:31:44,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:31:44,769 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:31:44,769 INFO L178 Difference]: Start difference. First operand has 574 places, 263 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:31:44,775 INFO L206 Difference]: Finished difference. Result has 581 places, 263 transitions [2020-02-10 23:31:44,775 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=20730, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20945, PETRI_PLACES=581, PETRI_TRANSITIONS=263} [2020-02-10 23:31:44,776 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 581 places, 263 transitions [2020-02-10 23:31:45,997 INFO L129 PetriNetUnfolder]: 78/828 cut-off events. [2020-02-10 23:31:45,997 INFO L130 PetriNetUnfolder]: For 281764/281903 co-relation queries the response was YES. [2020-02-10 23:31:46,028 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14297 conditions, 828 events. 78/828 cut-off events. For 281764/281903 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9269 event pairs. 3/816 useless extension candidates. Maximal degree in co-relation 14038. Up to 156 conditions per place. [2020-02-10 23:31:46,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 581 places, 263 transitions [2020-02-10 23:31:46,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 581 places, 263 transitions [2020-02-10 23:31:46,067 INFO L479 AbstractCegarLoop]: Abstraction has has 581 places, 263 transitions [2020-02-10 23:31:46,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:31:46,825 INFO L129 PetriNetUnfolder]: 78/780 cut-off events. [2020-02-10 23:31:46,825 INFO L130 PetriNetUnfolder]: For 281764/281903 co-relation queries the response was YES. [2020-02-10 23:31:46,825 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:46,825 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:46,825 INFO L427 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:46,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:46,825 INFO L82 PathProgramCache]: Analyzing trace with hash 196670724, now seen corresponding path program 67 times [2020-02-10 23:31:46,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:46,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513327519] [2020-02-10 23:31:46,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:47,011 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 23:31:47,011 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513327519] [2020-02-10 23:31:47,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:47,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:31:47,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293361340] [2020-02-10 23:31:47,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:31:47,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:47,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:31:47,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:31:47,014 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:31:47,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 263 transitions. Second operand 7 states. [2020-02-10 23:31:47,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:47,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:31:47,015 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:50,136 INFO L129 PetriNetUnfolder]: 79/871 cut-off events. [2020-02-10 23:31:50,136 INFO L130 PetriNetUnfolder]: For 314665/315503 co-relation queries the response was YES. [2020-02-10 23:31:50,170 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15659 conditions, 871 events. 79/871 cut-off events. For 314665/315503 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9878 event pairs. 35/892 useless extension candidates. Maximal degree in co-relation 15399. Up to 158 conditions per place. [2020-02-10 23:31:50,216 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 163 selfloop transitions, 108 changer transitions 0/283 dead transitions. [2020-02-10 23:31:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:31:50,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:31:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:31:50,217 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:31:50,217 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:31:50,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:31:50,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:50,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:31:50,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:31:50,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:31:50,219 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:31:50,219 INFO L178 Difference]: Start difference. First operand has 581 places, 263 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:31:50,227 INFO L206 Difference]: Finished difference. Result has 592 places, 274 transitions [2020-02-10 23:31:50,227 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=20945, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22319, PETRI_PLACES=592, PETRI_TRANSITIONS=274} [2020-02-10 23:31:50,227 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 592 places, 274 transitions [2020-02-10 23:31:51,651 INFO L129 PetriNetUnfolder]: 79/871 cut-off events. [2020-02-10 23:31:51,651 INFO L130 PetriNetUnfolder]: For 315732/315952 co-relation queries the response was YES. [2020-02-10 23:31:51,680 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15576 conditions, 871 events. 79/871 cut-off events. For 315732/315952 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9910 event pairs. 5/857 useless extension candidates. Maximal degree in co-relation 15311. Up to 158 conditions per place. [2020-02-10 23:31:51,680 INFO L82 GeneralOperation]: Start removeDead. Operand has 592 places, 274 transitions [2020-02-10 23:31:51,716 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 592 places, 274 transitions [2020-02-10 23:31:51,716 INFO L479 AbstractCegarLoop]: Abstraction has has 592 places, 274 transitions [2020-02-10 23:31:51,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:31:52,550 INFO L129 PetriNetUnfolder]: 79/818 cut-off events. [2020-02-10 23:31:52,551 INFO L130 PetriNetUnfolder]: For 315732/315952 co-relation queries the response was YES. [2020-02-10 23:31:52,551 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:52,551 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:52,551 INFO L427 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:52,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:52,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1781615786, now seen corresponding path program 68 times [2020-02-10 23:31:52,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:52,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831608869] [2020-02-10 23:31:52,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:31:52,702 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831608869] [2020-02-10 23:31:52,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:52,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:31:52,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368279079] [2020-02-10 23:31:52,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:31:52,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:52,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:31:52,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:31:52,704 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:31:52,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 274 transitions. Second operand 7 states. [2020-02-10 23:31:52,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:52,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:31:52,704 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:55,441 INFO L129 PetriNetUnfolder]: 79/870 cut-off events. [2020-02-10 23:31:55,441 INFO L130 PetriNetUnfolder]: For 323520/324326 co-relation queries the response was YES. [2020-02-10 23:31:55,471 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15832 conditions, 870 events. 79/870 cut-off events. For 323520/324326 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9880 event pairs. 31/887 useless extension candidates. Maximal degree in co-relation 15566. Up to 158 conditions per place. [2020-02-10 23:31:55,509 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 159 selfloop transitions, 114 changer transitions 0/285 dead transitions. [2020-02-10 23:31:55,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:31:55,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:31:55,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:31:55,510 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:31:55,510 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:31:55,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:31:55,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:55,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:31:55,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:31:55,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:31:55,512 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:31:55,512 INFO L178 Difference]: Start difference. First operand has 592 places, 274 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:31:55,517 INFO L206 Difference]: Finished difference. Result has 600 places, 276 transitions [2020-02-10 23:31:55,518 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=22319, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22739, PETRI_PLACES=600, PETRI_TRANSITIONS=276} [2020-02-10 23:31:55,518 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 600 places, 276 transitions [2020-02-10 23:31:56,928 INFO L129 PetriNetUnfolder]: 79/870 cut-off events. [2020-02-10 23:31:56,929 INFO L130 PetriNetUnfolder]: For 321939/322160 co-relation queries the response was YES. [2020-02-10 23:31:56,963 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15718 conditions, 870 events. 79/870 cut-off events. For 321939/322160 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9906 event pairs. 4/855 useless extension candidates. Maximal degree in co-relation 15450. Up to 158 conditions per place. [2020-02-10 23:31:56,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 600 places, 276 transitions [2020-02-10 23:31:57,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 600 places, 276 transitions [2020-02-10 23:31:57,007 INFO L479 AbstractCegarLoop]: Abstraction has has 600 places, 276 transitions [2020-02-10 23:31:57,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:31:57,865 INFO L129 PetriNetUnfolder]: 79/818 cut-off events. [2020-02-10 23:31:57,865 INFO L130 PetriNetUnfolder]: For 323335/323670 co-relation queries the response was YES. [2020-02-10 23:31:57,865 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:57,865 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:57,865 INFO L427 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:57,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:57,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1657890990, now seen corresponding path program 69 times [2020-02-10 23:31:57,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:57,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068686257] [2020-02-10 23:31:57,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:58,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:31:58,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068686257] [2020-02-10 23:31:58,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:58,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:31:58,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247027599] [2020-02-10 23:31:58,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:31:58,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:58,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:31:58,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:31:58,043 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:31:58,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 276 transitions. Second operand 7 states. [2020-02-10 23:31:58,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:58,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:31:58,043 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:00,861 INFO L129 PetriNetUnfolder]: 79/869 cut-off events. [2020-02-10 23:32:00,861 INFO L130 PetriNetUnfolder]: For 329000/329799 co-relation queries the response was YES. [2020-02-10 23:32:00,896 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15972 conditions, 869 events. 79/869 cut-off events. For 329000/329799 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9861 event pairs. 3/857 useless extension candidates. Maximal degree in co-relation 15703. Up to 158 conditions per place. [2020-02-10 23:32:00,940 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 154 selfloop transitions, 110 changer transitions 3/279 dead transitions. [2020-02-10 23:32:00,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:32:00,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:32:00,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:32:00,941 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:32:00,941 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:32:00,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:32:00,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:00,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:32:00,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:32:00,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:32:00,942 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:32:00,942 INFO L178 Difference]: Start difference. First operand has 600 places, 276 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:32:00,948 INFO L206 Difference]: Finished difference. Result has 607 places, 273 transitions [2020-02-10 23:32:00,948 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=22739, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22701, PETRI_PLACES=607, PETRI_TRANSITIONS=273} [2020-02-10 23:32:00,948 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 607 places, 273 transitions [2020-02-10 23:32:02,239 INFO L129 PetriNetUnfolder]: 78/859 cut-off events. [2020-02-10 23:32:02,240 INFO L130 PetriNetUnfolder]: For 325902/326241 co-relation queries the response was YES. [2020-02-10 23:32:02,270 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15687 conditions, 859 events. 78/859 cut-off events. For 325902/326241 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9770 event pairs. 4/844 useless extension candidates. Maximal degree in co-relation 15417. Up to 156 conditions per place. [2020-02-10 23:32:02,270 INFO L82 GeneralOperation]: Start removeDead. Operand has 607 places, 273 transitions [2020-02-10 23:32:02,307 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 606 places, 273 transitions [2020-02-10 23:32:02,307 INFO L479 AbstractCegarLoop]: Abstraction has has 606 places, 273 transitions [2020-02-10 23:32:02,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:32:03,153 INFO L129 PetriNetUnfolder]: 78/808 cut-off events. [2020-02-10 23:32:03,153 INFO L130 PetriNetUnfolder]: For 325902/326241 co-relation queries the response was YES. [2020-02-10 23:32:03,153 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:03,153 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:32:03,153 INFO L427 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:03,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:03,153 INFO L82 PathProgramCache]: Analyzing trace with hash 805854258, now seen corresponding path program 70 times [2020-02-10 23:32:03,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:03,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033550275] [2020-02-10 23:32:03,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:32:03,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033550275] [2020-02-10 23:32:03,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:03,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:32:03,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524260147] [2020-02-10 23:32:03,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:32:03,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:03,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:32:03,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:32:03,293 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:32:03,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 273 transitions. Second operand 7 states. [2020-02-10 23:32:03,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:03,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:32:03,294 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:06,139 INFO L129 PetriNetUnfolder]: 78/858 cut-off events. [2020-02-10 23:32:06,139 INFO L130 PetriNetUnfolder]: For 331691/332511 co-relation queries the response was YES. [2020-02-10 23:32:06,172 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15936 conditions, 858 events. 78/858 cut-off events. For 331691/332511 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9700 event pairs. 19/862 useless extension candidates. Maximal degree in co-relation 15665. Up to 156 conditions per place. [2020-02-10 23:32:06,212 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 149 selfloop transitions, 115 changer transitions 0/276 dead transitions. [2020-02-10 23:32:06,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:32:06,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:32:06,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:32:06,215 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:32:06,215 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:32:06,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:32:06,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:06,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:32:06,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:32:06,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:32:06,216 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:32:06,216 INFO L178 Difference]: Start difference. First operand has 606 places, 273 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:32:06,224 INFO L206 Difference]: Finished difference. Result has 613 places, 273 transitions [2020-02-10 23:32:06,225 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=22701, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22934, PETRI_PLACES=613, PETRI_TRANSITIONS=273} [2020-02-10 23:32:06,225 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 613 places, 273 transitions [2020-02-10 23:32:07,630 INFO L129 PetriNetUnfolder]: 78/858 cut-off events. [2020-02-10 23:32:07,630 INFO L130 PetriNetUnfolder]: For 330126/330455 co-relation queries the response was YES. [2020-02-10 23:32:07,665 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15788 conditions, 858 events. 78/858 cut-off events. For 330126/330455 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9712 event pairs. 3/841 useless extension candidates. Maximal degree in co-relation 15516. Up to 156 conditions per place. [2020-02-10 23:32:07,665 INFO L82 GeneralOperation]: Start removeDead. Operand has 613 places, 273 transitions [2020-02-10 23:32:07,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 613 places, 273 transitions [2020-02-10 23:32:07,708 INFO L479 AbstractCegarLoop]: Abstraction has has 613 places, 273 transitions [2020-02-10 23:32:07,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:32:08,571 INFO L129 PetriNetUnfolder]: 78/808 cut-off events. [2020-02-10 23:32:08,572 INFO L130 PetriNetUnfolder]: For 330126/330455 co-relation queries the response was YES. [2020-02-10 23:32:08,572 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:08,572 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:32:08,572 INFO L427 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:08,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:08,572 INFO L82 PathProgramCache]: Analyzing trace with hash 884914156, now seen corresponding path program 71 times [2020-02-10 23:32:08,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:08,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366332623] [2020-02-10 23:32:08,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:08,716 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 23:32:08,716 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366332623] [2020-02-10 23:32:08,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:08,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:32:08,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859733648] [2020-02-10 23:32:08,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:32:08,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:08,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:32:08,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:32:08,718 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:32:08,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 273 transitions. Second operand 7 states. [2020-02-10 23:32:08,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:08,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:32:08,718 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:11,550 INFO L129 PetriNetUnfolder]: 78/857 cut-off events. [2020-02-10 23:32:11,550 INFO L130 PetriNetUnfolder]: For 336367/337189 co-relation queries the response was YES. [2020-02-10 23:32:11,585 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16035 conditions, 857 events. 78/857 cut-off events. For 336367/337189 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9694 event pairs. 29/872 useless extension candidates. Maximal degree in co-relation 15762. Up to 156 conditions per place. [2020-02-10 23:32:11,629 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 161 selfloop transitions, 109 changer transitions 0/282 dead transitions. [2020-02-10 23:32:11,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:32:11,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:32:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:32:11,631 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:32:11,631 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:32:11,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:32:11,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:11,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:32:11,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:32:11,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:32:11,632 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:32:11,632 INFO L178 Difference]: Start difference. First operand has 613 places, 273 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:32:11,640 INFO L206 Difference]: Finished difference. Result has 622 places, 278 transitions [2020-02-10 23:32:11,641 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=22934, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23630, PETRI_PLACES=622, PETRI_TRANSITIONS=278} [2020-02-10 23:32:11,641 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 622 places, 278 transitions [2020-02-10 23:32:13,038 INFO L129 PetriNetUnfolder]: 78/857 cut-off events. [2020-02-10 23:32:13,038 INFO L130 PetriNetUnfolder]: For 336766/337105 co-relation queries the response was YES. [2020-02-10 23:32:13,078 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15903 conditions, 857 events. 78/857 cut-off events. For 336766/337105 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9731 event pairs. 3/841 useless extension candidates. Maximal degree in co-relation 15627. Up to 156 conditions per place. [2020-02-10 23:32:13,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 622 places, 278 transitions [2020-02-10 23:32:13,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 622 places, 278 transitions [2020-02-10 23:32:13,120 INFO L479 AbstractCegarLoop]: Abstraction has has 622 places, 278 transitions [2020-02-10 23:32:13,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:32:14,001 INFO L129 PetriNetUnfolder]: 78/808 cut-off events. [2020-02-10 23:32:14,002 INFO L130 PetriNetUnfolder]: For 336766/337105 co-relation queries the response was YES. [2020-02-10 23:32:14,002 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:14,002 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:32:14,002 INFO L427 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:14,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:14,002 INFO L82 PathProgramCache]: Analyzing trace with hash -216920578, now seen corresponding path program 72 times [2020-02-10 23:32:14,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:14,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492630993] [2020-02-10 23:32:14,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:14,151 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 23:32:14,152 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492630993] [2020-02-10 23:32:14,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:14,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:32:14,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290071967] [2020-02-10 23:32:14,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:32:14,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:14,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:32:14,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:32:14,154 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:32:14,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 278 transitions. Second operand 7 states. [2020-02-10 23:32:14,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:14,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:32:14,154 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:16,999 INFO L129 PetriNetUnfolder]: 78/856 cut-off events. [2020-02-10 23:32:16,999 INFO L130 PetriNetUnfolder]: For 343083/343955 co-relation queries the response was YES. [2020-02-10 23:32:17,033 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16148 conditions, 856 events. 78/856 cut-off events. For 343083/343955 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9653 event pairs. 22/864 useless extension candidates. Maximal degree in co-relation 15871. Up to 156 conditions per place. [2020-02-10 23:32:17,075 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 119 changer transitions 0/281 dead transitions. [2020-02-10 23:32:17,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:32:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:32:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:32:17,076 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:32:17,076 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:32:17,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:32:17,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:17,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:32:17,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:32:17,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:32:17,078 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:32:17,078 INFO L178 Difference]: Start difference. First operand has 622 places, 278 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:32:17,085 INFO L206 Difference]: Finished difference. Result has 629 places, 278 transitions [2020-02-10 23:32:17,085 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=23630, PETRI_DIFFERENCE_MINUEND_PLACES=622, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23871, PETRI_PLACES=629, PETRI_TRANSITIONS=278} [2020-02-10 23:32:17,086 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 629 places, 278 transitions [2020-02-10 23:32:18,505 INFO L129 PetriNetUnfolder]: 78/856 cut-off events. [2020-02-10 23:32:18,505 INFO L130 PetriNetUnfolder]: For 341587/341926 co-relation queries the response was YES. [2020-02-10 23:32:18,540 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16001 conditions, 856 events. 78/856 cut-off events. For 341587/341926 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9691 event pairs. 3/838 useless extension candidates. Maximal degree in co-relation 15723. Up to 156 conditions per place. [2020-02-10 23:32:18,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 629 places, 278 transitions [2020-02-10 23:32:18,584 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 629 places, 278 transitions [2020-02-10 23:32:18,584 INFO L479 AbstractCegarLoop]: Abstraction has has 629 places, 278 transitions [2020-02-10 23:32:18,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:32:19,451 INFO L129 PetriNetUnfolder]: 78/808 cut-off events. [2020-02-10 23:32:19,451 INFO L130 PetriNetUnfolder]: For 341436/341706 co-relation queries the response was YES. [2020-02-10 23:32:19,451 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:19,451 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:32:19,451 INFO L427 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:19,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:19,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1978172896, now seen corresponding path program 73 times [2020-02-10 23:32:19,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:19,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824212645] [2020-02-10 23:32:19,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:19,600 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 23:32:19,601 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824212645] [2020-02-10 23:32:19,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:19,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:32:19,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819644027] [2020-02-10 23:32:19,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:32:19,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:19,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:32:19,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:32:19,602 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:32:19,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 278 transitions. Second operand 7 states. [2020-02-10 23:32:19,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:19,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:32:19,602 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:22,515 INFO L129 PetriNetUnfolder]: 78/855 cut-off events. [2020-02-10 23:32:22,515 INFO L130 PetriNetUnfolder]: For 346101/346570 co-relation queries the response was YES. [2020-02-10 23:32:22,546 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16244 conditions, 855 events. 78/855 cut-off events. For 346101/346570 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9657 event pairs. 38/881 useless extension candidates. Maximal degree in co-relation 15965. Up to 156 conditions per place. [2020-02-10 23:32:22,586 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 159 selfloop transitions, 112 changer transitions 0/283 dead transitions. [2020-02-10 23:32:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:32:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:32:22,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:32:22,587 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:32:22,587 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:32:22,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:32:22,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:22,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:32:22,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:32:22,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:32:22,589 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:32:22,589 INFO L178 Difference]: Start difference. First operand has 629 places, 278 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:32:22,594 INFO L206 Difference]: Finished difference. Result has 637 places, 279 transitions [2020-02-10 23:32:22,595 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=23871, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24222, PETRI_PLACES=637, PETRI_TRANSITIONS=279} [2020-02-10 23:32:22,595 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 637 places, 279 transitions [2020-02-10 23:32:24,033 INFO L129 PetriNetUnfolder]: 78/855 cut-off events. [2020-02-10 23:32:24,033 INFO L130 PetriNetUnfolder]: For 346485/346751 co-relation queries the response was YES. [2020-02-10 23:32:24,069 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16096 conditions, 855 events. 78/855 cut-off events. For 346485/346751 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9680 event pairs. 5/842 useless extension candidates. Maximal degree in co-relation 15815. Up to 156 conditions per place. [2020-02-10 23:32:24,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 637 places, 279 transitions [2020-02-10 23:32:24,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 637 places, 279 transitions [2020-02-10 23:32:24,114 INFO L479 AbstractCegarLoop]: Abstraction has has 637 places, 279 transitions [2020-02-10 23:32:24,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:32:25,024 INFO L129 PetriNetUnfolder]: 78/808 cut-off events. [2020-02-10 23:32:25,024 INFO L130 PetriNetUnfolder]: For 347380/347591 co-relation queries the response was YES. [2020-02-10 23:32:25,024 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:25,024 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:32:25,025 INFO L427 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:25,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:25,025 INFO L82 PathProgramCache]: Analyzing trace with hash -962489518, now seen corresponding path program 74 times [2020-02-10 23:32:25,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:25,025 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49323328] [2020-02-10 23:32:25,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:32:25,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49323328] [2020-02-10 23:32:25,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:25,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:32:25,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341500267] [2020-02-10 23:32:25,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:32:25,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:25,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:32:25,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:32:25,169 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:32:25,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 279 transitions. Second operand 7 states. [2020-02-10 23:32:25,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:25,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:32:25,170 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:28,078 INFO L129 PetriNetUnfolder]: 78/854 cut-off events. [2020-02-10 23:32:28,078 INFO L130 PetriNetUnfolder]: For 351137/351602 co-relation queries the response was YES. [2020-02-10 23:32:28,114 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16337 conditions, 854 events. 78/854 cut-off events. For 351137/351602 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9633 event pairs. 15/857 useless extension candidates. Maximal degree in co-relation 16055. Up to 156 conditions per place. [2020-02-10 23:32:28,158 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 162 selfloop transitions, 108 changer transitions 0/282 dead transitions. [2020-02-10 23:32:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:32:28,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:32:28,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:32:28,159 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:32:28,159 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:32:28,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:32:28,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:28,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:32:28,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:32:28,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:32:28,160 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:32:28,160 INFO L178 Difference]: Start difference. First operand has 637 places, 279 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:32:28,166 INFO L206 Difference]: Finished difference. Result has 644 places, 279 transitions [2020-02-10 23:32:28,167 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=24222, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24441, PETRI_PLACES=644, PETRI_TRANSITIONS=279} [2020-02-10 23:32:28,167 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 644 places, 279 transitions [2020-02-10 23:32:29,595 INFO L129 PetriNetUnfolder]: 78/854 cut-off events. [2020-02-10 23:32:29,595 INFO L130 PetriNetUnfolder]: For 351646/351857 co-relation queries the response was YES. [2020-02-10 23:32:29,625 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16179 conditions, 854 events. 78/854 cut-off events. For 351646/351857 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9682 event pairs. 3/840 useless extension candidates. Maximal degree in co-relation 15896. Up to 156 conditions per place. [2020-02-10 23:32:29,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 644 places, 279 transitions [2020-02-10 23:32:29,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 644 places, 279 transitions [2020-02-10 23:32:29,662 INFO L479 AbstractCegarLoop]: Abstraction has has 644 places, 279 transitions [2020-02-10 23:32:29,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:32:30,573 INFO L129 PetriNetUnfolder]: 78/808 cut-off events. [2020-02-10 23:32:30,573 INFO L130 PetriNetUnfolder]: For 351044/351209 co-relation queries the response was YES. [2020-02-10 23:32:30,573 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:30,573 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:32:30,574 INFO L427 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:30,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:30,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1861248986, now seen corresponding path program 75 times [2020-02-10 23:32:30,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:30,574 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844053175] [2020-02-10 23:32:30,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:30,723 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 23:32:30,723 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844053175] [2020-02-10 23:32:30,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:30,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:32:30,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519913297] [2020-02-10 23:32:30,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:32:30,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:30,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:32:30,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:32:30,725 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:32:30,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 279 transitions. Second operand 7 states. [2020-02-10 23:32:30,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:30,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:32:30,725 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:33,667 INFO L129 PetriNetUnfolder]: 78/853 cut-off events. [2020-02-10 23:32:33,668 INFO L130 PetriNetUnfolder]: For 355346/355810 co-relation queries the response was YES. [2020-02-10 23:32:33,702 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16418 conditions, 853 events. 78/853 cut-off events. For 355346/355810 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9633 event pairs. 15/856 useless extension candidates. Maximal degree in co-relation 16134. Up to 156 conditions per place. [2020-02-10 23:32:33,742 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 149 selfloop transitions, 118 changer transitions 3/282 dead transitions. [2020-02-10 23:32:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:32:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:32:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:32:33,744 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:32:33,744 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:32:33,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:32:33,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:33,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:32:33,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:32:33,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:32:33,745 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:32:33,745 INFO L178 Difference]: Start difference. First operand has 644 places, 279 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:32:33,754 INFO L206 Difference]: Finished difference. Result has 651 places, 276 transitions [2020-02-10 23:32:33,754 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=24441, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24376, PETRI_PLACES=651, PETRI_TRANSITIONS=276} [2020-02-10 23:32:33,754 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 651 places, 276 transitions [2020-02-10 23:32:35,177 INFO L129 PetriNetUnfolder]: 77/843 cut-off events. [2020-02-10 23:32:35,177 INFO L130 PetriNetUnfolder]: For 352566/352731 co-relation queries the response was YES. [2020-02-10 23:32:35,213 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16115 conditions, 843 events. 77/843 cut-off events. For 352566/352731 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9527 event pairs. 3/830 useless extension candidates. Maximal degree in co-relation 15830. Up to 154 conditions per place. [2020-02-10 23:32:35,213 INFO L82 GeneralOperation]: Start removeDead. Operand has 651 places, 276 transitions [2020-02-10 23:32:35,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 649 places, 276 transitions [2020-02-10 23:32:35,256 INFO L479 AbstractCegarLoop]: Abstraction has has 649 places, 276 transitions [2020-02-10 23:32:35,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:32:36,169 INFO L129 PetriNetUnfolder]: 77/798 cut-off events. [2020-02-10 23:32:36,170 INFO L130 PetriNetUnfolder]: For 352566/352731 co-relation queries the response was YES. [2020-02-10 23:32:36,170 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:36,170 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:32:36,170 INFO L427 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:36,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:36,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1890624450, now seen corresponding path program 76 times [2020-02-10 23:32:36,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:36,170 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705488124] [2020-02-10 23:32:36,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:36,306 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 23:32:36,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705488124] [2020-02-10 23:32:36,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:36,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:32:36,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753882231] [2020-02-10 23:32:36,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:32:36,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:36,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:32:36,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:32:36,309 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:32:36,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 276 transitions. Second operand 7 states. [2020-02-10 23:32:36,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:36,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:32:36,309 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:39,236 INFO L129 PetriNetUnfolder]: 77/842 cut-off events. [2020-02-10 23:32:39,236 INFO L130 PetriNetUnfolder]: For 356831/357295 co-relation queries the response was YES. [2020-02-10 23:32:39,272 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16349 conditions, 842 events. 77/842 cut-off events. For 356831/357295 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9476 event pairs. 4/834 useless extension candidates. Maximal degree in co-relation 16063. Up to 159 conditions per place. [2020-02-10 23:32:39,316 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 158 selfloop transitions, 108 changer transitions 0/278 dead transitions. [2020-02-10 23:32:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:32:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:32:39,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:32:39,317 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:32:39,318 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:32:39,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:32:39,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:39,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:32:39,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:32:39,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:32:39,319 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:32:39,319 INFO L178 Difference]: Start difference. First operand has 649 places, 276 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:32:39,325 INFO L206 Difference]: Finished difference. Result has 656 places, 276 transitions [2020-02-10 23:32:39,325 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=24376, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24595, PETRI_PLACES=656, PETRI_TRANSITIONS=276} [2020-02-10 23:32:39,325 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 656 places, 276 transitions [2020-02-10 23:32:40,722 INFO L129 PetriNetUnfolder]: 77/842 cut-off events. [2020-02-10 23:32:40,722 INFO L130 PetriNetUnfolder]: For 357119/357284 co-relation queries the response was YES. [2020-02-10 23:32:40,757 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16194 conditions, 842 events. 77/842 cut-off events. For 357119/357284 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9513 event pairs. 3/828 useless extension candidates. Maximal degree in co-relation 15907. Up to 154 conditions per place. [2020-02-10 23:32:40,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 656 places, 276 transitions [2020-02-10 23:32:40,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 656 places, 276 transitions [2020-02-10 23:32:40,800 INFO L479 AbstractCegarLoop]: Abstraction has has 656 places, 276 transitions [2020-02-10 23:32:40,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:32:41,720 INFO L129 PetriNetUnfolder]: 77/798 cut-off events. [2020-02-10 23:32:41,720 INFO L130 PetriNetUnfolder]: For 357119/357284 co-relation queries the response was YES. [2020-02-10 23:32:41,720 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:41,721 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:32:41,721 INFO L427 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:41,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:41,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1918043724, now seen corresponding path program 77 times [2020-02-10 23:32:41,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:41,721 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339394259] [2020-02-10 23:32:41,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:41,875 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 23:32:41,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339394259] [2020-02-10 23:32:41,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:41,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:32:41,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434194001] [2020-02-10 23:32:41,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:32:41,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:41,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:32:41,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:32:41,879 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:32:41,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 276 transitions. Second operand 7 states. [2020-02-10 23:32:41,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:41,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:32:41,880 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:45,173 INFO L129 PetriNetUnfolder]: 77/841 cut-off events. [2020-02-10 23:32:45,174 INFO L130 PetriNetUnfolder]: For 361677/362227 co-relation queries the response was YES. [2020-02-10 23:32:45,210 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16426 conditions, 841 events. 77/841 cut-off events. For 361677/362227 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9443 event pairs. 5/833 useless extension candidates. Maximal degree in co-relation 16138. Up to 154 conditions per place. [2020-02-10 23:32:45,253 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 160 selfloop transitions, 108 changer transitions 0/280 dead transitions. [2020-02-10 23:32:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:32:45,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:32:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:32:45,255 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:32:45,255 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:32:45,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:32:45,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:45,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:32:45,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:32:45,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:32:45,256 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:32:45,256 INFO L178 Difference]: Start difference. First operand has 656 places, 276 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:32:45,265 INFO L206 Difference]: Finished difference. Result has 663 places, 276 transitions [2020-02-10 23:32:45,266 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=24595, PETRI_DIFFERENCE_MINUEND_PLACES=656, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24814, PETRI_PLACES=663, PETRI_TRANSITIONS=276} [2020-02-10 23:32:45,266 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 663 places, 276 transitions [2020-02-10 23:32:46,711 INFO L129 PetriNetUnfolder]: 77/841 cut-off events. [2020-02-10 23:32:46,712 INFO L130 PetriNetUnfolder]: For 361060/361225 co-relation queries the response was YES. [2020-02-10 23:32:46,748 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16270 conditions, 841 events. 77/841 cut-off events. For 361060/361225 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9535 event pairs. 3/828 useless extension candidates. Maximal degree in co-relation 15981. Up to 154 conditions per place. [2020-02-10 23:32:46,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 663 places, 276 transitions [2020-02-10 23:32:46,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 663 places, 276 transitions [2020-02-10 23:32:46,792 INFO L479 AbstractCegarLoop]: Abstraction has has 663 places, 276 transitions [2020-02-10 23:32:46,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:32:47,692 INFO L129 PetriNetUnfolder]: 77/798 cut-off events. [2020-02-10 23:32:47,692 INFO L130 PetriNetUnfolder]: For 361060/361225 co-relation queries the response was YES. [2020-02-10 23:32:47,692 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:47,692 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:32:47,692 INFO L427 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:47,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:47,692 INFO L82 PathProgramCache]: Analyzing trace with hash -606125214, now seen corresponding path program 78 times [2020-02-10 23:32:47,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:47,693 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637086062] [2020-02-10 23:32:47,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:32:47,822 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637086062] [2020-02-10 23:32:47,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:47,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:32:47,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618587538] [2020-02-10 23:32:47,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:32:47,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:47,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:32:47,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:32:47,824 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:32:47,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 276 transitions. Second operand 7 states. [2020-02-10 23:32:47,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:47,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:32:47,824 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:50,697 INFO L129 PetriNetUnfolder]: 77/840 cut-off events. [2020-02-10 23:32:50,697 INFO L130 PetriNetUnfolder]: For 365817/366367 co-relation queries the response was YES. [2020-02-10 23:32:50,729 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16500 conditions, 840 events. 77/840 cut-off events. For 365817/366367 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9464 event pairs. 26/853 useless extension candidates. Maximal degree in co-relation 16210. Up to 154 conditions per place. [2020-02-10 23:32:50,767 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 148 selfloop transitions, 118 changer transitions 0/278 dead transitions. [2020-02-10 23:32:50,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:32:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:32:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:32:50,768 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:32:50,768 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:32:50,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:32:50,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:50,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:32:50,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:32:50,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:32:50,769 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:32:50,769 INFO L178 Difference]: Start difference. First operand has 663 places, 276 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:32:50,775 INFO L206 Difference]: Finished difference. Result has 670 places, 276 transitions [2020-02-10 23:32:50,776 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=24814, PETRI_DIFFERENCE_MINUEND_PLACES=663, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25053, PETRI_PLACES=670, PETRI_TRANSITIONS=276} [2020-02-10 23:32:50,776 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 670 places, 276 transitions [2020-02-10 23:32:52,214 INFO L129 PetriNetUnfolder]: 77/840 cut-off events. [2020-02-10 23:32:52,215 INFO L130 PetriNetUnfolder]: For 365613/365781 co-relation queries the response was YES. [2020-02-10 23:32:52,251 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16354 conditions, 840 events. 77/840 cut-off events. For 365613/365781 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9501 event pairs. 3/827 useless extension candidates. Maximal degree in co-relation 16063. Up to 154 conditions per place. [2020-02-10 23:32:52,251 INFO L82 GeneralOperation]: Start removeDead. Operand has 670 places, 276 transitions [2020-02-10 23:32:52,294 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 670 places, 276 transitions [2020-02-10 23:32:52,295 INFO L479 AbstractCegarLoop]: Abstraction has has 670 places, 276 transitions [2020-02-10 23:32:52,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:32:53,232 INFO L129 PetriNetUnfolder]: 77/798 cut-off events. [2020-02-10 23:32:53,232 INFO L130 PetriNetUnfolder]: For 365613/365781 co-relation queries the response was YES. [2020-02-10 23:32:53,232 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:53,232 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:32:53,232 INFO L427 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:53,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:53,233 INFO L82 PathProgramCache]: Analyzing trace with hash 900542206, now seen corresponding path program 79 times [2020-02-10 23:32:53,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:53,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431018598] [2020-02-10 23:32:53,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:53,391 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 23:32:53,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431018598] [2020-02-10 23:32:53,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:53,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:32:53,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248902161] [2020-02-10 23:32:53,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:32:53,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:53,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:32:53,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:32:53,393 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:32:53,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 276 transitions. Second operand 7 states. [2020-02-10 23:32:53,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:53,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:32:53,394 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:56,357 INFO L129 PetriNetUnfolder]: 77/839 cut-off events. [2020-02-10 23:32:56,357 INFO L130 PetriNetUnfolder]: For 370116/370668 co-relation queries the response was YES. [2020-02-10 23:32:56,394 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16582 conditions, 839 events. 77/839 cut-off events. For 370116/370668 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9460 event pairs. 18/844 useless extension candidates. Maximal degree in co-relation 16290. Up to 154 conditions per place. [2020-02-10 23:32:56,438 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 148 selfloop transitions, 117 changer transitions 2/279 dead transitions. [2020-02-10 23:32:56,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:32:56,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:32:56,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:32:56,439 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:32:56,439 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:32:56,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:32:56,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:56,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:32:56,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:32:56,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:32:56,441 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:32:56,441 INFO L178 Difference]: Start difference. First operand has 670 places, 276 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:32:56,447 INFO L206 Difference]: Finished difference. Result has 677 places, 274 transitions [2020-02-10 23:32:56,447 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=25053, PETRI_DIFFERENCE_MINUEND_PLACES=670, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25071, PETRI_PLACES=677, PETRI_TRANSITIONS=274} [2020-02-10 23:32:56,448 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 677 places, 274 transitions [2020-02-10 23:32:57,811 INFO L129 PetriNetUnfolder]: 76/830 cut-off events. [2020-02-10 23:32:57,812 INFO L130 PetriNetUnfolder]: For 367428/367593 co-relation queries the response was YES. [2020-02-10 23:32:57,847 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16324 conditions, 830 events. 76/830 cut-off events. For 367428/367593 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9347 event pairs. 2/816 useless extension candidates. Maximal degree in co-relation 16031. Up to 152 conditions per place. [2020-02-10 23:32:57,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 677 places, 274 transitions [2020-02-10 23:32:57,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 676 places, 274 transitions [2020-02-10 23:32:57,888 INFO L479 AbstractCegarLoop]: Abstraction has has 676 places, 274 transitions [2020-02-10 23:32:57,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:32:58,835 INFO L129 PetriNetUnfolder]: 76/789 cut-off events. [2020-02-10 23:32:58,836 INFO L130 PetriNetUnfolder]: For 368354/368573 co-relation queries the response was YES. [2020-02-10 23:32:58,836 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:58,836 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:32:58,836 INFO L427 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:58,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:58,836 INFO L82 PathProgramCache]: Analyzing trace with hash -2045319942, now seen corresponding path program 80 times [2020-02-10 23:32:58,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:58,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436043205] [2020-02-10 23:32:58,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:58,990 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 23:32:58,990 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436043205] [2020-02-10 23:32:58,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:58,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:32:58,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867658319] [2020-02-10 23:32:58,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:32:58,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:58,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:32:58,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:32:58,992 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:32:58,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 274 transitions. Second operand 7 states. [2020-02-10 23:32:58,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:58,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:32:58,992 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:01,934 INFO L129 PetriNetUnfolder]: 76/829 cut-off events. [2020-02-10 23:33:01,935 INFO L130 PetriNetUnfolder]: For 371882/372421 co-relation queries the response was YES. [2020-02-10 23:33:01,970 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16548 conditions, 829 events. 76/829 cut-off events. For 371882/372421 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9341 event pairs. 36/852 useless extension candidates. Maximal degree in co-relation 16254. Up to 152 conditions per place. [2020-02-10 23:33:02,012 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 154 selfloop transitions, 111 changer transitions 0/277 dead transitions. [2020-02-10 23:33:02,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:33:02,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:33:02,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:33:02,013 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:33:02,013 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:33:02,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:33:02,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:02,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:33:02,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:33:02,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:33:02,015 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:33:02,015 INFO L178 Difference]: Start difference. First operand has 676 places, 274 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:33:02,024 INFO L206 Difference]: Finished difference. Result has 683 places, 274 transitions [2020-02-10 23:33:02,025 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=25071, PETRI_DIFFERENCE_MINUEND_PLACES=676, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25296, PETRI_PLACES=683, PETRI_TRANSITIONS=274} [2020-02-10 23:33:02,025 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 683 places, 274 transitions [2020-02-10 23:33:03,444 INFO L129 PetriNetUnfolder]: 76/829 cut-off events. [2020-02-10 23:33:03,444 INFO L130 PetriNetUnfolder]: For 372240/372459 co-relation queries the response was YES. [2020-02-10 23:33:03,481 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16398 conditions, 829 events. 76/829 cut-off events. For 372240/372459 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9322 event pairs. 2/816 useless extension candidates. Maximal degree in co-relation 16103. Up to 152 conditions per place. [2020-02-10 23:33:03,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 683 places, 274 transitions [2020-02-10 23:33:03,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 683 places, 274 transitions [2020-02-10 23:33:03,524 INFO L479 AbstractCegarLoop]: Abstraction has has 683 places, 274 transitions [2020-02-10 23:33:03,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:33:04,429 INFO L129 PetriNetUnfolder]: 76/789 cut-off events. [2020-02-10 23:33:04,429 INFO L130 PetriNetUnfolder]: For 368753/368872 co-relation queries the response was YES. [2020-02-10 23:33:04,429 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:33:04,429 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:33:04,429 INFO L427 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:33:04,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:33:04,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1695659002, now seen corresponding path program 81 times [2020-02-10 23:33:04,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:33:04,430 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380160220] [2020-02-10 23:33:04,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:33:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:33:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:33:04,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380160220] [2020-02-10 23:33:04,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:33:04,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:33:04,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418358222] [2020-02-10 23:33:04,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:33:04,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:33:04,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:33:04,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:33:04,561 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:33:04,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 274 transitions. Second operand 7 states. [2020-02-10 23:33:04,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:33:04,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:33:04,561 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:07,509 INFO L129 PetriNetUnfolder]: 76/828 cut-off events. [2020-02-10 23:33:07,509 INFO L130 PetriNetUnfolder]: For 375731/376270 co-relation queries the response was YES. [2020-02-10 23:33:07,541 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16620 conditions, 828 events. 76/828 cut-off events. For 375731/376270 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9289 event pairs. 24/839 useless extension candidates. Maximal degree in co-relation 16324. Up to 152 conditions per place. [2020-02-10 23:33:07,577 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 153 selfloop transitions, 112 changer transitions 0/277 dead transitions. [2020-02-10 23:33:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:33:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:33:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:33:07,578 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:33:07,579 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:33:07,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:33:07,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:07,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:33:07,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:33:07,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:33:07,580 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:33:07,580 INFO L178 Difference]: Start difference. First operand has 683 places, 274 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:33:07,589 INFO L206 Difference]: Finished difference. Result has 690 places, 274 transitions [2020-02-10 23:33:07,590 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=25296, PETRI_DIFFERENCE_MINUEND_PLACES=683, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25523, PETRI_PLACES=690, PETRI_TRANSITIONS=274} [2020-02-10 23:33:07,590 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 690 places, 274 transitions [2020-02-10 23:33:09,040 INFO L129 PetriNetUnfolder]: 76/828 cut-off events. [2020-02-10 23:33:09,041 INFO L130 PetriNetUnfolder]: For 372648/372773 co-relation queries the response was YES. [2020-02-10 23:33:09,077 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16470 conditions, 828 events. 76/828 cut-off events. For 372648/372773 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9348 event pairs. 2/816 useless extension candidates. Maximal degree in co-relation 16173. Up to 152 conditions per place. [2020-02-10 23:33:09,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 690 places, 274 transitions [2020-02-10 23:33:09,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 690 places, 274 transitions [2020-02-10 23:33:09,121 INFO L479 AbstractCegarLoop]: Abstraction has has 690 places, 274 transitions [2020-02-10 23:33:09,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:33:10,079 INFO L129 PetriNetUnfolder]: 76/789 cut-off events. [2020-02-10 23:33:10,079 INFO L130 PetriNetUnfolder]: For 375209/375380 co-relation queries the response was YES. [2020-02-10 23:33:10,080 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:33:10,080 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:33:10,080 INFO L427 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:33:10,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:33:10,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1411697458, now seen corresponding path program 82 times [2020-02-10 23:33:10,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:33:10,080 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228925704] [2020-02-10 23:33:10,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:33:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:33:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:33:10,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228925704] [2020-02-10 23:33:10,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:33:10,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:33:10,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453167514] [2020-02-10 23:33:10,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:33:10,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:33:10,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:33:10,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:33:10,216 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:33:10,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 274 transitions. Second operand 7 states. [2020-02-10 23:33:10,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:33:10,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:33:10,217 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:13,206 INFO L129 PetriNetUnfolder]: 76/827 cut-off events. [2020-02-10 23:33:13,206 INFO L130 PetriNetUnfolder]: For 379642/380190 co-relation queries the response was YES. [2020-02-10 23:33:13,243 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16690 conditions, 827 events. 76/827 cut-off events. For 379642/380190 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9313 event pairs. 20/834 useless extension candidates. Maximal degree in co-relation 16392. Up to 152 conditions per place. [2020-02-10 23:33:13,307 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 157 selfloop transitions, 109 changer transitions 0/278 dead transitions. [2020-02-10 23:33:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:33:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:33:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:33:13,308 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:33:13,309 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:33:13,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:33:13,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:13,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:33:13,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:33:13,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:33:13,310 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:33:13,310 INFO L178 Difference]: Start difference. First operand has 690 places, 274 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:33:13,319 INFO L206 Difference]: Finished difference. Result has 697 places, 274 transitions [2020-02-10 23:33:13,320 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=25523, PETRI_DIFFERENCE_MINUEND_PLACES=690, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25744, PETRI_PLACES=697, PETRI_TRANSITIONS=274} [2020-02-10 23:33:13,320 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 697 places, 274 transitions [2020-02-10 23:33:14,686 INFO L129 PetriNetUnfolder]: 76/827 cut-off events. [2020-02-10 23:33:14,686 INFO L130 PetriNetUnfolder]: For 377934/378100 co-relation queries the response was YES. [2020-02-10 23:33:14,720 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16537 conditions, 827 events. 76/827 cut-off events. For 377934/378100 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9323 event pairs. 2/813 useless extension candidates. Maximal degree in co-relation 16238. Up to 152 conditions per place. [2020-02-10 23:33:14,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 697 places, 274 transitions [2020-02-10 23:33:14,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 697 places, 274 transitions [2020-02-10 23:33:14,759 INFO L479 AbstractCegarLoop]: Abstraction has has 697 places, 274 transitions [2020-02-10 23:33:14,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:33:15,717 INFO L129 PetriNetUnfolder]: 76/789 cut-off events. [2020-02-10 23:33:15,717 INFO L130 PetriNetUnfolder]: For 376422/376592 co-relation queries the response was YES. [2020-02-10 23:33:15,717 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:33:15,717 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:33:15,717 INFO L427 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:33:15,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:33:15,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1867773374, now seen corresponding path program 83 times [2020-02-10 23:33:15,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:33:15,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493539479] [2020-02-10 23:33:15,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:33:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:33:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:33:15,836 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493539479] [2020-02-10 23:33:15,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:33:15,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:33:15,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962370827] [2020-02-10 23:33:15,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:33:15,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:33:15,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:33:15,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:33:15,838 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:33:15,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 274 transitions. Second operand 7 states. [2020-02-10 23:33:15,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:33:15,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:33:15,839 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:18,863 INFO L129 PetriNetUnfolder]: 76/826 cut-off events. [2020-02-10 23:33:18,863 INFO L130 PetriNetUnfolder]: For 385306/385915 co-relation queries the response was YES. [2020-02-10 23:33:18,899 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16755 conditions, 826 events. 76/826 cut-off events. For 385306/385915 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9252 event pairs. 17/830 useless extension candidates. Maximal degree in co-relation 16455. Up to 152 conditions per place. [2020-02-10 23:33:18,940 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 159 selfloop transitions, 106 changer transitions 0/277 dead transitions. [2020-02-10 23:33:18,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:33:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:33:18,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:33:18,941 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:33:18,941 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:33:18,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:33:18,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:18,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:33:18,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:33:18,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:33:18,942 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:33:18,943 INFO L178 Difference]: Start difference. First operand has 697 places, 274 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:33:18,949 INFO L206 Difference]: Finished difference. Result has 704 places, 274 transitions [2020-02-10 23:33:18,949 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=25744, PETRI_DIFFERENCE_MINUEND_PLACES=697, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25959, PETRI_PLACES=704, PETRI_TRANSITIONS=274} [2020-02-10 23:33:18,949 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 704 places, 274 transitions [2020-02-10 23:33:20,376 INFO L129 PetriNetUnfolder]: 76/826 cut-off events. [2020-02-10 23:33:20,376 INFO L130 PetriNetUnfolder]: For 379941/380103 co-relation queries the response was YES. [2020-02-10 23:33:20,413 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16600 conditions, 826 events. 76/826 cut-off events. For 379941/380103 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9313 event pairs. 1/813 useless extension candidates. Maximal degree in co-relation 16299. Up to 152 conditions per place. [2020-02-10 23:33:20,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 704 places, 274 transitions [2020-02-10 23:33:20,456 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 704 places, 274 transitions [2020-02-10 23:33:20,456 INFO L479 AbstractCegarLoop]: Abstraction has has 704 places, 274 transitions [2020-02-10 23:33:20,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:33:21,407 INFO L129 PetriNetUnfolder]: 76/789 cut-off events. [2020-02-10 23:33:21,407 INFO L130 PetriNetUnfolder]: For 379941/380103 co-relation queries the response was YES. [2020-02-10 23:33:21,408 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:33:21,408 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:33:21,408 INFO L427 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:33:21,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:33:21,408 INFO L82 PathProgramCache]: Analyzing trace with hash 2046085690, now seen corresponding path program 84 times [2020-02-10 23:33:21,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:33:21,408 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206206715] [2020-02-10 23:33:21,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:33:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:33:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:33:21,566 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206206715] [2020-02-10 23:33:21,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:33:21,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:33:21,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613939838] [2020-02-10 23:33:21,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:33:21,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:33:21,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:33:21,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:33:21,568 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:33:21,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 704 places, 274 transitions. Second operand 7 states. [2020-02-10 23:33:21,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:33:21,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:33:21,568 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:24,555 INFO L129 PetriNetUnfolder]: 76/825 cut-off events. [2020-02-10 23:33:24,555 INFO L130 PetriNetUnfolder]: For 388154/388700 co-relation queries the response was YES. [2020-02-10 23:33:24,588 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16816 conditions, 825 events. 76/825 cut-off events. For 388154/388700 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9282 event pairs. 24/836 useless extension candidates. Maximal degree in co-relation 16514. Up to 152 conditions per place. [2020-02-10 23:33:24,624 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 149 selfloop transitions, 116 changer transitions 0/277 dead transitions. [2020-02-10 23:33:24,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:33:24,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:33:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:33:24,626 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:33:24,626 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:33:24,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:33:24,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:24,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:33:24,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:33:24,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:33:24,627 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:33:24,627 INFO L178 Difference]: Start difference. First operand has 704 places, 274 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:33:24,633 INFO L206 Difference]: Finished difference. Result has 711 places, 274 transitions [2020-02-10 23:33:24,633 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=25959, PETRI_DIFFERENCE_MINUEND_PLACES=704, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26194, PETRI_PLACES=711, PETRI_TRANSITIONS=274} [2020-02-10 23:33:24,634 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 711 places, 274 transitions [2020-02-10 23:33:26,054 INFO L129 PetriNetUnfolder]: 76/825 cut-off events. [2020-02-10 23:33:26,055 INFO L130 PetriNetUnfolder]: For 383409/383571 co-relation queries the response was YES. [2020-02-10 23:33:26,092 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16671 conditions, 825 events. 76/825 cut-off events. For 383409/383571 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9291 event pairs. 1/810 useless extension candidates. Maximal degree in co-relation 16368. Up to 152 conditions per place. [2020-02-10 23:33:26,093 INFO L82 GeneralOperation]: Start removeDead. Operand has 711 places, 274 transitions [2020-02-10 23:33:26,136 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 711 places, 274 transitions [2020-02-10 23:33:26,136 INFO L479 AbstractCegarLoop]: Abstraction has has 711 places, 274 transitions [2020-02-10 23:33:26,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:33:27,145 INFO L129 PetriNetUnfolder]: 76/789 cut-off events. [2020-02-10 23:33:27,145 INFO L130 PetriNetUnfolder]: For 382818/382941 co-relation queries the response was YES. [2020-02-10 23:33:27,145 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:33:27,145 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:33:27,145 INFO L427 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:33:27,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:33:27,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1261552612, now seen corresponding path program 85 times [2020-02-10 23:33:27,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:33:27,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123735413] [2020-02-10 23:33:27,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:33:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:33:27,291 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 23:33:27,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123735413] [2020-02-10 23:33:27,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:33:27,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:33:27,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613066543] [2020-02-10 23:33:27,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:33:27,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:33:27,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:33:27,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:33:27,293 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:33:27,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 274 transitions. Second operand 7 states. [2020-02-10 23:33:27,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:33:27,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:33:27,294 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:30,314 INFO L129 PetriNetUnfolder]: 76/824 cut-off events. [2020-02-10 23:33:30,314 INFO L130 PetriNetUnfolder]: For 391716/392267 co-relation queries the response was YES. [2020-02-10 23:33:30,352 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16885 conditions, 824 events. 76/824 cut-off events. For 391716/392267 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9225 event pairs. 15/826 useless extension candidates. Maximal degree in co-relation 16581. Up to 152 conditions per place. [2020-02-10 23:33:30,395 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 148 selfloop transitions, 114 changer transitions 3/277 dead transitions. [2020-02-10 23:33:30,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:33:30,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:33:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:33:30,396 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:33:30,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:33:30,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:33:30,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:30,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:33:30,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:33:30,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:33:30,398 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:33:30,398 INFO L178 Difference]: Start difference. First operand has 711 places, 274 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:33:30,407 INFO L206 Difference]: Finished difference. Result has 718 places, 271 transitions [2020-02-10 23:33:30,407 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=26194, PETRI_DIFFERENCE_MINUEND_PLACES=711, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26072, PETRI_PLACES=718, PETRI_TRANSITIONS=271} [2020-02-10 23:33:30,407 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 718 places, 271 transitions [2020-02-10 23:33:31,750 INFO L129 PetriNetUnfolder]: 75/814 cut-off events. [2020-02-10 23:33:31,750 INFO L130 PetriNetUnfolder]: For 382569/382692 co-relation queries the response was YES. [2020-02-10 23:33:31,786 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16560 conditions, 814 events. 75/814 cut-off events. For 382569/382692 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9147 event pairs. 1/799 useless extension candidates. Maximal degree in co-relation 16255. Up to 150 conditions per place. [2020-02-10 23:33:31,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 718 places, 271 transitions [2020-02-10 23:33:31,824 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 714 places, 271 transitions [2020-02-10 23:33:31,825 INFO L479 AbstractCegarLoop]: Abstraction has has 714 places, 271 transitions [2020-02-10 23:33:31,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:33:32,798 INFO L129 PetriNetUnfolder]: 75/779 cut-off events. [2020-02-10 23:33:32,798 INFO L130 PetriNetUnfolder]: For 382569/382692 co-relation queries the response was YES. [2020-02-10 23:33:32,798 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:33:32,798 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:33:32,799 INFO L427 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:33:32,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:33:32,799 INFO L82 PathProgramCache]: Analyzing trace with hash -146228260, now seen corresponding path program 86 times [2020-02-10 23:33:32,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:33:32,799 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355523295] [2020-02-10 23:33:32,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:33:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:33:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:33:32,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355523295] [2020-02-10 23:33:32,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:33:32,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:33:32,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774084934] [2020-02-10 23:33:32,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:33:32,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:33:32,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:33:32,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:33:32,959 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:33:32,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 714 places, 271 transitions. Second operand 7 states. [2020-02-10 23:33:32,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:33:32,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:33:32,960 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:35,974 INFO L129 PetriNetUnfolder]: 75/813 cut-off events. [2020-02-10 23:33:35,975 INFO L130 PetriNetUnfolder]: For 391421/391972 co-relation queries the response was YES. [2020-02-10 23:33:36,011 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16769 conditions, 813 events. 75/813 cut-off events. For 391421/391972 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9091 event pairs. 15/815 useless extension candidates. Maximal degree in co-relation 16463. Up to 150 conditions per place. [2020-02-10 23:33:36,052 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 151 selfloop transitions, 109 changer transitions 2/274 dead transitions. [2020-02-10 23:33:36,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:33:36,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:33:36,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:33:36,053 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:33:36,053 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:33:36,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:33:36,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:36,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:33:36,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:33:36,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:33:36,054 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:33:36,054 INFO L178 Difference]: Start difference. First operand has 714 places, 271 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:33:36,061 INFO L206 Difference]: Finished difference. Result has 721 places, 269 transitions [2020-02-10 23:33:36,061 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=26072, PETRI_DIFFERENCE_MINUEND_PLACES=714, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26080, PETRI_PLACES=721, PETRI_TRANSITIONS=269} [2020-02-10 23:33:36,061 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 721 places, 269 transitions [2020-02-10 23:33:37,461 INFO L129 PetriNetUnfolder]: 74/804 cut-off events. [2020-02-10 23:33:37,461 INFO L130 PetriNetUnfolder]: For 383575/383698 co-relation queries the response was YES. [2020-02-10 23:33:37,498 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16510 conditions, 804 events. 74/804 cut-off events. For 383575/383698 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9037 event pairs. 1/789 useless extension candidates. Maximal degree in co-relation 16203. Up to 148 conditions per place. [2020-02-10 23:33:37,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 721 places, 269 transitions [2020-02-10 23:33:37,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 720 places, 269 transitions [2020-02-10 23:33:37,540 INFO L479 AbstractCegarLoop]: Abstraction has has 720 places, 269 transitions [2020-02-10 23:33:37,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:33:38,481 INFO L129 PetriNetUnfolder]: 74/770 cut-off events. [2020-02-10 23:33:38,481 INFO L130 PetriNetUnfolder]: For 384400/384625 co-relation queries the response was YES. [2020-02-10 23:33:38,481 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:33:38,481 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:33:38,482 INFO L427 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:33:38,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:33:38,482 INFO L82 PathProgramCache]: Analyzing trace with hash -582696680, now seen corresponding path program 87 times [2020-02-10 23:33:38,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:33:38,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982002027] [2020-02-10 23:33:38,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:33:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:33:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:33:38,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982002027] [2020-02-10 23:33:38,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:33:38,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:33:38,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603051264] [2020-02-10 23:33:38,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:33:38,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:33:38,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:33:38,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:33:38,621 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:33:38,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 269 transitions. Second operand 7 states. [2020-02-10 23:33:38,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:33:38,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:33:38,622 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:41,549 INFO L129 PetriNetUnfolder]: 74/803 cut-off events. [2020-02-10 23:33:41,549 INFO L130 PetriNetUnfolder]: For 392498/393057 co-relation queries the response was YES. [2020-02-10 23:33:41,582 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16715 conditions, 803 events. 74/803 cut-off events. For 392498/393057 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8965 event pairs. 24/814 useless extension candidates. Maximal degree in co-relation 16407. Up to 148 conditions per place. [2020-02-10 23:33:41,618 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 151 selfloop transitions, 110 changer transitions 0/273 dead transitions. [2020-02-10 23:33:41,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:33:41,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:33:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:33:41,619 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:33:41,619 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:33:41,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:33:41,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:41,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:33:41,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:33:41,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:33:41,620 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:33:41,620 INFO L178 Difference]: Start difference. First operand has 720 places, 269 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:33:41,626 INFO L206 Difference]: Finished difference. Result has 728 places, 270 transitions [2020-02-10 23:33:41,627 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=26080, PETRI_DIFFERENCE_MINUEND_PLACES=720, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26448, PETRI_PLACES=728, PETRI_TRANSITIONS=270} [2020-02-10 23:33:41,627 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 728 places, 270 transitions [2020-02-10 23:33:43,015 INFO L129 PetriNetUnfolder]: 74/803 cut-off events. [2020-02-10 23:33:43,015 INFO L130 PetriNetUnfolder]: For 389024/389259 co-relation queries the response was YES. [2020-02-10 23:33:43,053 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16589 conditions, 803 events. 74/803 cut-off events. For 389024/389259 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8990 event pairs. 1/787 useless extension candidates. Maximal degree in co-relation 16279. Up to 148 conditions per place. [2020-02-10 23:33:43,053 INFO L82 GeneralOperation]: Start removeDead. Operand has 728 places, 270 transitions [2020-02-10 23:33:43,095 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 728 places, 270 transitions [2020-02-10 23:33:43,095 INFO L479 AbstractCegarLoop]: Abstraction has has 728 places, 270 transitions [2020-02-10 23:33:43,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:33:44,086 INFO L129 PetriNetUnfolder]: 74/770 cut-off events. [2020-02-10 23:33:44,087 INFO L130 PetriNetUnfolder]: For 391297/391580 co-relation queries the response was YES. [2020-02-10 23:33:44,087 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:33:44,087 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:33:44,087 INFO L427 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:33:44,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:33:44,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1936919392, now seen corresponding path program 88 times [2020-02-10 23:33:44,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:33:44,087 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580443402] [2020-02-10 23:33:44,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:33:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:33:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:33:44,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580443402] [2020-02-10 23:33:44,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:33:44,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:33:44,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751710098] [2020-02-10 23:33:44,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:33:44,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:33:44,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:33:44,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:33:44,240 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:33:44,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 728 places, 270 transitions. Second operand 7 states. [2020-02-10 23:33:44,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:33:44,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:33:44,240 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:47,233 INFO L129 PetriNetUnfolder]: 74/802 cut-off events. [2020-02-10 23:33:47,234 INFO L130 PetriNetUnfolder]: For 397080/397683 co-relation queries the response was YES. [2020-02-10 23:33:47,271 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16792 conditions, 802 events. 74/802 cut-off events. For 397080/397683 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8955 event pairs. 42/831 useless extension candidates. Maximal degree in co-relation 16481. Up to 148 conditions per place. [2020-02-10 23:33:47,313 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 158 selfloop transitions, 104 changer transitions 0/274 dead transitions. [2020-02-10 23:33:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:33:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:33:47,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:33:47,314 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:33:47,314 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:33:47,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:33:47,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:47,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:33:47,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:33:47,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:33:47,315 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:33:47,315 INFO L178 Difference]: Start difference. First operand has 728 places, 270 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:33:47,322 INFO L206 Difference]: Finished difference. Result has 736 places, 271 transitions [2020-02-10 23:33:47,322 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=26448, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26795, PETRI_PLACES=736, PETRI_TRANSITIONS=271} [2020-02-10 23:33:47,322 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 736 places, 271 transitions [2020-02-10 23:33:48,654 INFO L129 PetriNetUnfolder]: 74/802 cut-off events. [2020-02-10 23:33:48,654 INFO L130 PetriNetUnfolder]: For 395692/395975 co-relation queries the response was YES. [2020-02-10 23:33:48,690 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16657 conditions, 802 events. 74/802 cut-off events. For 395692/395975 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8986 event pairs. 1/784 useless extension candidates. Maximal degree in co-relation 16344. Up to 148 conditions per place. [2020-02-10 23:33:48,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 736 places, 271 transitions [2020-02-10 23:33:48,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 736 places, 271 transitions [2020-02-10 23:33:48,729 INFO L479 AbstractCegarLoop]: Abstraction has has 736 places, 271 transitions [2020-02-10 23:33:48,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:33:49,725 INFO L129 PetriNetUnfolder]: 74/770 cut-off events. [2020-02-10 23:33:49,725 INFO L130 PetriNetUnfolder]: For 393657/393957 co-relation queries the response was YES. [2020-02-10 23:33:49,725 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:33:49,725 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:33:49,725 INFO L427 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:33:49,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:33:49,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1508109604, now seen corresponding path program 89 times [2020-02-10 23:33:49,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:33:49,726 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44384303] [2020-02-10 23:33:49,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:33:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:33:49,948 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 23:33:49,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44384303] [2020-02-10 23:33:49,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:33:49,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:33:49,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399405788] [2020-02-10 23:33:49,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:33:49,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:33:49,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:33:49,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:33:49,950 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:33:49,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 736 places, 271 transitions. Second operand 7 states. [2020-02-10 23:33:49,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:33:49,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:33:49,952 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:53,234 INFO L129 PetriNetUnfolder]: 74/801 cut-off events. [2020-02-10 23:33:53,234 INFO L130 PetriNetUnfolder]: For 401452/402055 co-relation queries the response was YES. [2020-02-10 23:33:53,271 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16858 conditions, 801 events. 74/801 cut-off events. For 401452/402055 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8914 event pairs. 42/830 useless extension candidates. Maximal degree in co-relation 16544. Up to 148 conditions per place. [2020-02-10 23:33:53,312 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 156 selfloop transitions, 105 changer transitions 0/273 dead transitions. [2020-02-10 23:33:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:33:53,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:33:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:33:53,313 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:33:53,313 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:33:53,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:33:53,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:53,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:33:53,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:33:53,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:33:53,314 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:33:53,314 INFO L178 Difference]: Start difference. First operand has 736 places, 271 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:33:53,321 INFO L206 Difference]: Finished difference. Result has 743 places, 271 transitions [2020-02-10 23:33:53,321 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=26795, PETRI_DIFFERENCE_MINUEND_PLACES=736, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=27008, PETRI_PLACES=743, PETRI_TRANSITIONS=271} [2020-02-10 23:33:53,321 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 743 places, 271 transitions [2020-02-10 23:33:54,718 INFO L129 PetriNetUnfolder]: 74/801 cut-off events. [2020-02-10 23:33:54,718 INFO L130 PetriNetUnfolder]: For 396379/396679 co-relation queries the response was YES. [2020-02-10 23:33:54,756 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16706 conditions, 801 events. 74/801 cut-off events. For 396379/396679 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8955 event pairs. 1/783 useless extension candidates. Maximal degree in co-relation 16391. Up to 148 conditions per place. [2020-02-10 23:33:54,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 743 places, 271 transitions [2020-02-10 23:33:54,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 743 places, 271 transitions [2020-02-10 23:33:54,799 INFO L479 AbstractCegarLoop]: Abstraction has has 743 places, 271 transitions [2020-02-10 23:33:54,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:33:55,780 INFO L129 PetriNetUnfolder]: 74/770 cut-off events. [2020-02-10 23:33:55,781 INFO L130 PetriNetUnfolder]: For 395328/395542 co-relation queries the response was YES. [2020-02-10 23:33:55,781 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:33:55,781 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:33:55,781 INFO L427 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:33:55,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:33:55,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1037889978, now seen corresponding path program 90 times [2020-02-10 23:33:55,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:33:55,781 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773103508] [2020-02-10 23:33:55,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:33:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:33:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:33:55,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773103508] [2020-02-10 23:33:55,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:33:55,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:33:55,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827622508] [2020-02-10 23:33:55,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:33:55,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:33:55,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:33:55,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:33:55,936 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:33:55,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 271 transitions. Second operand 7 states. [2020-02-10 23:33:55,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:33:55,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:33:55,936 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:58,968 INFO L129 PetriNetUnfolder]: 74/800 cut-off events. [2020-02-10 23:33:58,969 INFO L130 PetriNetUnfolder]: For 402987/403574 co-relation queries the response was YES. [2020-02-10 23:33:59,004 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16905 conditions, 800 events. 74/800 cut-off events. For 402987/403574 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8920 event pairs. 4/791 useless extension candidates. Maximal degree in co-relation 16589. Up to 148 conditions per place. [2020-02-10 23:33:59,055 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 156 selfloop transitions, 93 changer transitions 13/274 dead transitions. [2020-02-10 23:33:59,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:33:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:33:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:33:59,057 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:33:59,057 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:33:59,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:33:59,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:59,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:33:59,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:33:59,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:33:59,058 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:33:59,058 INFO L178 Difference]: Start difference. First operand has 743 places, 271 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:33:59,064 INFO L206 Difference]: Finished difference. Result has 750 places, 258 transitions [2020-02-10 23:33:59,065 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=27008, PETRI_DIFFERENCE_MINUEND_PLACES=743, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25874, PETRI_PLACES=750, PETRI_TRANSITIONS=258} [2020-02-10 23:33:59,065 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 750 places, 258 transitions [2020-02-10 23:34:00,358 INFO L129 PetriNetUnfolder]: 69/760 cut-off events. [2020-02-10 23:34:00,359 INFO L130 PetriNetUnfolder]: For 384505/384719 co-relation queries the response was YES. [2020-02-10 23:34:00,395 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16074 conditions, 760 events. 69/760 cut-off events. For 384505/384719 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8394 event pairs. 1/742 useless extension candidates. Maximal degree in co-relation 15757. Up to 138 conditions per place. [2020-02-10 23:34:00,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 750 places, 258 transitions [2020-02-10 23:34:00,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 745 places, 258 transitions [2020-02-10 23:34:00,435 INFO L479 AbstractCegarLoop]: Abstraction has has 745 places, 258 transitions [2020-02-10 23:34:00,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:34:01,383 INFO L129 PetriNetUnfolder]: 69/730 cut-off events. [2020-02-10 23:34:01,383 INFO L130 PetriNetUnfolder]: For 384505/384719 co-relation queries the response was YES. [2020-02-10 23:34:01,383 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:34:01,383 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:34:01,383 INFO L427 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:34:01,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:34:01,384 INFO L82 PathProgramCache]: Analyzing trace with hash 269238598, now seen corresponding path program 91 times [2020-02-10 23:34:01,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:34:01,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349772786] [2020-02-10 23:34:01,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:34:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:34:01,518 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 23:34:01,518 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349772786] [2020-02-10 23:34:01,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:34:01,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:34:01,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013794370] [2020-02-10 23:34:01,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:34:01,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:34:01,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:34:01,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:34:01,519 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:34:01,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 745 places, 258 transitions. Second operand 7 states. [2020-02-10 23:34:01,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:34:01,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:34:01,520 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:04,409 INFO L129 PetriNetUnfolder]: 69/759 cut-off events. [2020-02-10 23:34:04,410 INFO L130 PetriNetUnfolder]: For 392183/392809 co-relation queries the response was YES. [2020-02-10 23:34:04,446 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16258 conditions, 759 events. 69/759 cut-off events. For 392183/392809 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8371 event pairs. 24/770 useless extension candidates. Maximal degree in co-relation 15940. Up to 138 conditions per place. [2020-02-10 23:34:04,486 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 149 selfloop transitions, 100 changer transitions 0/261 dead transitions. [2020-02-10 23:34:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:34:04,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:34:04,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:34:04,487 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:34:04,487 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:34:04,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:34:04,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:04,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:34:04,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:34:04,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:34:04,489 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:34:04,489 INFO L178 Difference]: Start difference. First operand has 745 places, 258 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:34:04,496 INFO L206 Difference]: Finished difference. Result has 752 places, 258 transitions [2020-02-10 23:34:04,497 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=25874, PETRI_DIFFERENCE_MINUEND_PLACES=745, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26077, PETRI_PLACES=752, PETRI_TRANSITIONS=258} [2020-02-10 23:34:04,497 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 752 places, 258 transitions [2020-02-10 23:34:05,748 INFO L129 PetriNetUnfolder]: 69/759 cut-off events. [2020-02-10 23:34:05,748 INFO L130 PetriNetUnfolder]: For 386737/386959 co-relation queries the response was YES. [2020-02-10 23:34:05,783 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16114 conditions, 759 events. 69/759 cut-off events. For 386737/386959 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8394 event pairs. 1/741 useless extension candidates. Maximal degree in co-relation 15795. Up to 138 conditions per place. [2020-02-10 23:34:05,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 752 places, 258 transitions [2020-02-10 23:34:05,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 752 places, 258 transitions [2020-02-10 23:34:05,823 INFO L479 AbstractCegarLoop]: Abstraction has has 752 places, 258 transitions [2020-02-10 23:34:05,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:34:06,797 INFO L129 PetriNetUnfolder]: 69/730 cut-off events. [2020-02-10 23:34:06,797 INFO L130 PetriNetUnfolder]: For 388506/388831 co-relation queries the response was YES. [2020-02-10 23:34:06,798 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:34:06,798 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:34:06,798 INFO L427 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:34:06,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:34:06,798 INFO L82 PathProgramCache]: Analyzing trace with hash -59416134, now seen corresponding path program 92 times [2020-02-10 23:34:06,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:34:06,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569739552] [2020-02-10 23:34:06,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:34:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:34:06,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:34:06,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569739552] [2020-02-10 23:34:06,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:34:06,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:34:06,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341567321] [2020-02-10 23:34:06,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:34:06,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:34:06,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:34:06,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:34:06,956 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:34:06,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 752 places, 258 transitions. Second operand 7 states. [2020-02-10 23:34:06,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:34:06,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:34:06,957 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:09,856 INFO L129 PetriNetUnfolder]: 69/758 cut-off events. [2020-02-10 23:34:09,857 INFO L130 PetriNetUnfolder]: For 394401/395031 co-relation queries the response was YES. [2020-02-10 23:34:09,892 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16296 conditions, 758 events. 69/758 cut-off events. For 394401/395031 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8364 event pairs. 35/780 useless extension candidates. Maximal degree in co-relation 15976. Up to 138 conditions per place. [2020-02-10 23:34:09,929 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 142 selfloop transitions, 106 changer transitions 0/260 dead transitions. [2020-02-10 23:34:09,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:34:09,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:34:09,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:34:09,930 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:34:09,930 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:34:09,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:34:09,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:09,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:34:09,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:34:09,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:34:09,932 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:34:09,932 INFO L178 Difference]: Start difference. First operand has 752 places, 258 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:34:09,938 INFO L206 Difference]: Finished difference. Result has 759 places, 258 transitions [2020-02-10 23:34:09,938 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=26077, PETRI_DIFFERENCE_MINUEND_PLACES=752, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26292, PETRI_PLACES=759, PETRI_TRANSITIONS=258} [2020-02-10 23:34:09,938 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 759 places, 258 transitions [2020-02-10 23:34:11,231 INFO L129 PetriNetUnfolder]: 69/758 cut-off events. [2020-02-10 23:34:11,231 INFO L130 PetriNetUnfolder]: For 390749/391074 co-relation queries the response was YES. [2020-02-10 23:34:11,268 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16158 conditions, 758 events. 69/758 cut-off events. For 390749/391074 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8400 event pairs. 1/741 useless extension candidates. Maximal degree in co-relation 15837. Up to 138 conditions per place. [2020-02-10 23:34:11,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 759 places, 258 transitions [2020-02-10 23:34:11,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 759 places, 258 transitions [2020-02-10 23:34:11,308 INFO L479 AbstractCegarLoop]: Abstraction has has 759 places, 258 transitions [2020-02-10 23:34:11,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:34:12,289 INFO L129 PetriNetUnfolder]: 69/730 cut-off events. [2020-02-10 23:34:12,289 INFO L130 PetriNetUnfolder]: For 390749/391074 co-relation queries the response was YES. [2020-02-10 23:34:12,289 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:34:12,290 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:34:12,290 INFO L427 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:34:12,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:34:12,290 INFO L82 PathProgramCache]: Analyzing trace with hash -572193576, now seen corresponding path program 93 times [2020-02-10 23:34:12,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:34:12,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112191488] [2020-02-10 23:34:12,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:34:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:34:12,451 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 23:34:12,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112191488] [2020-02-10 23:34:12,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:34:12,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:34:12,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136327580] [2020-02-10 23:34:12,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:34:12,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:34:12,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:34:12,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:34:12,454 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:34:12,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 759 places, 258 transitions. Second operand 7 states. [2020-02-10 23:34:12,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:34:12,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:34:12,454 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:15,384 INFO L129 PetriNetUnfolder]: 69/757 cut-off events. [2020-02-10 23:34:15,384 INFO L130 PetriNetUnfolder]: For 396607/397237 co-relation queries the response was YES. [2020-02-10 23:34:15,416 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16338 conditions, 757 events. 69/757 cut-off events. For 396607/397237 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8348 event pairs. 15/759 useless extension candidates. Maximal degree in co-relation 16016. Up to 141 conditions per place. [2020-02-10 23:34:15,450 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 141 selfloop transitions, 101 changer transitions 6/260 dead transitions. [2020-02-10 23:34:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:34:15,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:34:15,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:34:15,451 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:34:15,451 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:34:15,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:34:15,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:15,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:34:15,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:34:15,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:34:15,452 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:34:15,452 INFO L178 Difference]: Start difference. First operand has 759 places, 258 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:34:15,458 INFO L206 Difference]: Finished difference. Result has 766 places, 252 transitions [2020-02-10 23:34:15,458 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=26292, PETRI_DIFFERENCE_MINUEND_PLACES=759, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25863, PETRI_PLACES=766, PETRI_TRANSITIONS=252} [2020-02-10 23:34:15,458 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 766 places, 252 transitions [2020-02-10 23:34:16,722 INFO L129 PetriNetUnfolder]: 67/738 cut-off events. [2020-02-10 23:34:16,722 INFO L130 PetriNetUnfolder]: For 386011/386327 co-relation queries the response was YES. [2020-02-10 23:34:16,758 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15875 conditions, 738 events. 67/738 cut-off events. For 386011/386327 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8181 event pairs. 1/722 useless extension candidates. Maximal degree in co-relation 15552. Up to 134 conditions per place. [2020-02-10 23:34:16,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 766 places, 252 transitions [2020-02-10 23:34:16,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 763 places, 252 transitions [2020-02-10 23:34:16,797 INFO L479 AbstractCegarLoop]: Abstraction has has 763 places, 252 transitions [2020-02-10 23:34:16,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:34:17,742 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:34:17,742 INFO L130 PetriNetUnfolder]: For 385968/386269 co-relation queries the response was YES. [2020-02-10 23:34:17,742 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:34:17,742 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:34:17,742 INFO L427 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:34:17,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:34:17,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1649899708, now seen corresponding path program 94 times [2020-02-10 23:34:17,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:34:17,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357058762] [2020-02-10 23:34:17,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:34:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:34:17,896 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 23:34:17,897 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357058762] [2020-02-10 23:34:17,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:34:17,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:34:17,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216268344] [2020-02-10 23:34:17,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:34:17,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:34:17,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:34:17,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:34:17,899 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:34:17,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 763 places, 252 transitions. Second operand 7 states. [2020-02-10 23:34:17,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:34:17,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:34:17,899 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:20,734 INFO L129 PetriNetUnfolder]: 67/737 cut-off events. [2020-02-10 23:34:20,734 INFO L130 PetriNetUnfolder]: For 391707/392266 co-relation queries the response was YES. [2020-02-10 23:34:20,770 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16047 conditions, 737 events. 67/737 cut-off events. For 391707/392266 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8060 event pairs. 38/763 useless extension candidates. Maximal degree in co-relation 15723. Up to 134 conditions per place. [2020-02-10 23:34:20,808 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 145 selfloop transitions, 98 changer transitions 0/255 dead transitions. [2020-02-10 23:34:20,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:34:20,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:34:20,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:34:20,809 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:34:20,810 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:34:20,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:34:20,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:20,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:34:20,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:34:20,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:34:20,811 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:34:20,811 INFO L178 Difference]: Start difference. First operand has 763 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:34:20,817 INFO L206 Difference]: Finished difference. Result has 770 places, 252 transitions [2020-02-10 23:34:20,817 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=25863, PETRI_DIFFERENCE_MINUEND_PLACES=763, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26062, PETRI_PLACES=770, PETRI_TRANSITIONS=252} [2020-02-10 23:34:20,817 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 770 places, 252 transitions [2020-02-10 23:34:22,144 INFO L129 PetriNetUnfolder]: 67/737 cut-off events. [2020-02-10 23:34:22,145 INFO L130 PetriNetUnfolder]: For 387593/387893 co-relation queries the response was YES. [2020-02-10 23:34:22,175 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15907 conditions, 737 events. 67/737 cut-off events. For 387593/387893 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8114 event pairs. 0/720 useless extension candidates. Maximal degree in co-relation 15582. Up to 134 conditions per place. [2020-02-10 23:34:22,176 INFO L82 GeneralOperation]: Start removeDead. Operand has 770 places, 252 transitions [2020-02-10 23:34:22,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 770 places, 252 transitions [2020-02-10 23:34:22,207 INFO L479 AbstractCegarLoop]: Abstraction has has 770 places, 252 transitions [2020-02-10 23:34:22,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:34:23,154 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:34:23,154 INFO L130 PetriNetUnfolder]: For 386326/386544 co-relation queries the response was YES. [2020-02-10 23:34:23,154 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:34:23,154 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:34:23,154 INFO L427 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:34:23,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:34:23,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1089042946, now seen corresponding path program 95 times [2020-02-10 23:34:23,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:34:23,155 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144846913] [2020-02-10 23:34:23,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:34:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:34:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:34:23,294 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144846913] [2020-02-10 23:34:23,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:34:23,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:34:23,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425744357] [2020-02-10 23:34:23,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:34:23,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:34:23,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:34:23,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:34:23,296 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:34:23,296 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 252 transitions. Second operand 7 states. [2020-02-10 23:34:23,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:34:23,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:34:23,296 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:26,280 INFO L129 PetriNetUnfolder]: 67/736 cut-off events. [2020-02-10 23:34:26,280 INFO L130 PetriNetUnfolder]: For 393276/393832 co-relation queries the response was YES. [2020-02-10 23:34:26,318 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16077 conditions, 736 events. 67/736 cut-off events. For 393276/393832 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8077 event pairs. 3/727 useless extension candidates. Maximal degree in co-relation 15751. Up to 134 conditions per place. [2020-02-10 23:34:26,356 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 93 changer transitions 0/255 dead transitions. [2020-02-10 23:34:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:34:26,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:34:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:34:26,357 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:34:26,357 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:34:26,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:34:26,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:26,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:34:26,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:34:26,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:34:26,358 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:34:26,358 INFO L178 Difference]: Start difference. First operand has 770 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:34:26,365 INFO L206 Difference]: Finished difference. Result has 777 places, 252 transitions [2020-02-10 23:34:26,365 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=26062, PETRI_DIFFERENCE_MINUEND_PLACES=770, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26251, PETRI_PLACES=777, PETRI_TRANSITIONS=252} [2020-02-10 23:34:26,365 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 777 places, 252 transitions [2020-02-10 23:34:27,624 INFO L129 PetriNetUnfolder]: 67/736 cut-off events. [2020-02-10 23:34:27,624 INFO L130 PetriNetUnfolder]: For 388062/388280 co-relation queries the response was YES. [2020-02-10 23:34:27,660 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15932 conditions, 736 events. 67/736 cut-off events. For 388062/388280 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8161 event pairs. 0/719 useless extension candidates. Maximal degree in co-relation 15605. Up to 134 conditions per place. [2020-02-10 23:34:27,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 777 places, 252 transitions [2020-02-10 23:34:27,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 777 places, 252 transitions [2020-02-10 23:34:27,699 INFO L479 AbstractCegarLoop]: Abstraction has has 777 places, 252 transitions [2020-02-10 23:34:27,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:34:28,657 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:34:28,657 INFO L130 PetriNetUnfolder]: For 388062/388280 co-relation queries the response was YES. [2020-02-10 23:34:28,657 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:34:28,657 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:34:28,657 INFO L427 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:34:28,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:34:28,658 INFO L82 PathProgramCache]: Analyzing trace with hash 619417250, now seen corresponding path program 96 times [2020-02-10 23:34:28,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:34:28,658 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337714109] [2020-02-10 23:34:28,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:34:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:34:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:34:28,803 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337714109] [2020-02-10 23:34:28,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:34:28,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:34:28,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960170802] [2020-02-10 23:34:28,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:34:28,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:34:28,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:34:28,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:34:28,804 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:34:28,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 777 places, 252 transitions. Second operand 7 states. [2020-02-10 23:34:28,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:34:28,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:34:28,805 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:31,661 INFO L129 PetriNetUnfolder]: 67/735 cut-off events. [2020-02-10 23:34:31,662 INFO L130 PetriNetUnfolder]: For 395027/395583 co-relation queries the response was YES. [2020-02-10 23:34:31,698 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16100 conditions, 735 events. 67/735 cut-off events. For 395027/395583 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8042 event pairs. 13/736 useless extension candidates. Maximal degree in co-relation 15772. Up to 136 conditions per place. [2020-02-10 23:34:31,737 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 144 selfloop transitions, 99 changer transitions 0/255 dead transitions. [2020-02-10 23:34:31,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:34:31,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:34:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:34:31,738 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:34:31,738 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:34:31,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:34:31,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:31,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:34:31,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:34:31,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:34:31,739 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:34:31,740 INFO L178 Difference]: Start difference. First operand has 777 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:34:31,746 INFO L206 Difference]: Finished difference. Result has 784 places, 252 transitions [2020-02-10 23:34:31,746 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=26251, PETRI_DIFFERENCE_MINUEND_PLACES=777, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26452, PETRI_PLACES=784, PETRI_TRANSITIONS=252} [2020-02-10 23:34:31,746 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 784 places, 252 transitions [2020-02-10 23:34:32,958 INFO L129 PetriNetUnfolder]: 67/735 cut-off events. [2020-02-10 23:34:32,958 INFO L130 PetriNetUnfolder]: For 389738/389956 co-relation queries the response was YES. [2020-02-10 23:34:32,995 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15961 conditions, 735 events. 67/735 cut-off events. For 389738/389956 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8119 event pairs. 0/717 useless extension candidates. Maximal degree in co-relation 15632. Up to 134 conditions per place. [2020-02-10 23:34:32,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 784 places, 252 transitions [2020-02-10 23:34:33,032 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 784 places, 252 transitions [2020-02-10 23:34:33,032 INFO L479 AbstractCegarLoop]: Abstraction has has 784 places, 252 transitions [2020-02-10 23:34:33,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:34:33,996 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:34:33,996 INFO L130 PetriNetUnfolder]: For 389147/389295 co-relation queries the response was YES. [2020-02-10 23:34:33,996 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:34:33,996 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:34:33,996 INFO L427 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:34:33,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:34:33,996 INFO L82 PathProgramCache]: Analyzing trace with hash -886917760, now seen corresponding path program 97 times [2020-02-10 23:34:33,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:34:33,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443131893] [2020-02-10 23:34:33,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:34:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:34:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:34:34,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443131893] [2020-02-10 23:34:34,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:34:34,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:34:34,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491472416] [2020-02-10 23:34:34,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:34:34,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:34:34,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:34:34,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:34:34,150 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:34:34,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 784 places, 252 transitions. Second operand 7 states. [2020-02-10 23:34:34,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:34:34,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:34:34,150 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:37,016 INFO L129 PetriNetUnfolder]: 67/734 cut-off events. [2020-02-10 23:34:37,016 INFO L130 PetriNetUnfolder]: For 398680/399668 co-relation queries the response was YES. [2020-02-10 23:34:37,052 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16127 conditions, 734 events. 67/734 cut-off events. For 398680/399668 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8022 event pairs. 3/723 useless extension candidates. Maximal degree in co-relation 15797. Up to 134 conditions per place. [2020-02-10 23:34:37,089 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 144 selfloop transitions, 99 changer transitions 0/255 dead transitions. [2020-02-10 23:34:37,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:34:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:34:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:34:37,090 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:34:37,090 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:34:37,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:34:37,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:37,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:34:37,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:34:37,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:34:37,091 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:34:37,091 INFO L178 Difference]: Start difference. First operand has 784 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:34:37,098 INFO L206 Difference]: Finished difference. Result has 791 places, 252 transitions [2020-02-10 23:34:37,098 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=26452, PETRI_DIFFERENCE_MINUEND_PLACES=784, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26653, PETRI_PLACES=791, PETRI_TRANSITIONS=252} [2020-02-10 23:34:37,098 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 791 places, 252 transitions [2020-02-10 23:34:38,351 INFO L129 PetriNetUnfolder]: 67/734 cut-off events. [2020-02-10 23:34:38,351 INFO L130 PetriNetUnfolder]: For 390802/390950 co-relation queries the response was YES. [2020-02-10 23:34:38,388 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15988 conditions, 734 events. 67/734 cut-off events. For 390802/390950 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8110 event pairs. 0/718 useless extension candidates. Maximal degree in co-relation 15657. Up to 134 conditions per place. [2020-02-10 23:34:38,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 791 places, 252 transitions [2020-02-10 23:34:38,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 791 places, 252 transitions [2020-02-10 23:34:38,427 INFO L479 AbstractCegarLoop]: Abstraction has has 791 places, 252 transitions [2020-02-10 23:34:38,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:34:39,389 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:34:39,390 INFO L130 PetriNetUnfolder]: For 390802/390950 co-relation queries the response was YES. [2020-02-10 23:34:39,390 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:34:39,390 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:34:39,390 INFO L427 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:34:39,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:34:39,390 INFO L82 PathProgramCache]: Analyzing trace with hash 521898012, now seen corresponding path program 98 times [2020-02-10 23:34:39,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:34:39,390 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374391848] [2020-02-10 23:34:39,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:34:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:34:39,538 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 23:34:39,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374391848] [2020-02-10 23:34:39,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:34:39,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:34:39,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224379959] [2020-02-10 23:34:39,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:34:39,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:34:39,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:34:39,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:34:39,539 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:34:39,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 791 places, 252 transitions. Second operand 7 states. [2020-02-10 23:34:39,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:34:39,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:34:39,540 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:42,417 INFO L129 PetriNetUnfolder]: 67/733 cut-off events. [2020-02-10 23:34:42,418 INFO L130 PetriNetUnfolder]: For 400381/401369 co-relation queries the response was YES. [2020-02-10 23:34:42,451 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16152 conditions, 733 events. 67/733 cut-off events. For 400381/401369 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8031 event pairs. 3/722 useless extension candidates. Maximal degree in co-relation 15820. Up to 134 conditions per place. [2020-02-10 23:34:42,486 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 140 selfloop transitions, 103 changer transitions 0/255 dead transitions. [2020-02-10 23:34:42,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:34:42,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:34:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:34:42,487 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:34:42,487 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:34:42,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:34:42,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:42,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:34:42,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:34:42,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:34:42,488 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:34:42,488 INFO L178 Difference]: Start difference. First operand has 791 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:34:42,495 INFO L206 Difference]: Finished difference. Result has 798 places, 252 transitions [2020-02-10 23:34:42,496 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=26653, PETRI_DIFFERENCE_MINUEND_PLACES=791, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26862, PETRI_PLACES=798, PETRI_TRANSITIONS=252} [2020-02-10 23:34:42,496 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 798 places, 252 transitions [2020-02-10 23:34:43,748 INFO L129 PetriNetUnfolder]: 67/733 cut-off events. [2020-02-10 23:34:43,748 INFO L130 PetriNetUnfolder]: For 392259/392407 co-relation queries the response was YES. [2020-02-10 23:34:43,785 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16017 conditions, 733 events. 67/733 cut-off events. For 392259/392407 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8132 event pairs. 0/718 useless extension candidates. Maximal degree in co-relation 15684. Up to 134 conditions per place. [2020-02-10 23:34:43,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 798 places, 252 transitions [2020-02-10 23:34:43,824 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 798 places, 252 transitions [2020-02-10 23:34:43,824 INFO L479 AbstractCegarLoop]: Abstraction has has 798 places, 252 transitions [2020-02-10 23:34:43,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:34:44,834 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:34:44,834 INFO L130 PetriNetUnfolder]: For 392259/392407 co-relation queries the response was YES. [2020-02-10 23:34:44,834 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:34:44,834 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:34:44,834 INFO L427 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:34:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:34:44,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1709654704, now seen corresponding path program 99 times [2020-02-10 23:34:44,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:34:44,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026947175] [2020-02-10 23:34:44,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:34:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:34:44,991 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 23:34:44,991 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026947175] [2020-02-10 23:34:44,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:34:44,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:34:44,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247650793] [2020-02-10 23:34:44,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:34:44,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:34:44,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:34:44,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:34:44,993 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:34:44,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 798 places, 252 transitions. Second operand 7 states. [2020-02-10 23:34:44,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:34:44,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:34:44,993 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:47,878 INFO L129 PetriNetUnfolder]: 67/732 cut-off events. [2020-02-10 23:34:47,878 INFO L130 PetriNetUnfolder]: For 401891/402879 co-relation queries the response was YES. [2020-02-10 23:34:47,916 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16179 conditions, 732 events. 67/732 cut-off events. For 401891/402879 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8013 event pairs. 38/756 useless extension candidates. Maximal degree in co-relation 15845. Up to 134 conditions per place. [2020-02-10 23:34:47,954 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 138 selfloop transitions, 104 changer transitions 0/254 dead transitions. [2020-02-10 23:34:47,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:34:47,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:34:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:34:47,955 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:34:47,955 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:34:47,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:34:47,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:47,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:34:47,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:34:47,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:34:47,956 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:34:47,956 INFO L178 Difference]: Start difference. First operand has 798 places, 252 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:34:47,963 INFO L206 Difference]: Finished difference. Result has 805 places, 252 transitions [2020-02-10 23:34:47,964 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=26862, PETRI_DIFFERENCE_MINUEND_PLACES=798, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=27073, PETRI_PLACES=805, PETRI_TRANSITIONS=252} [2020-02-10 23:34:47,964 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 805 places, 252 transitions [2020-02-10 23:34:49,199 INFO L129 PetriNetUnfolder]: 67/732 cut-off events. [2020-02-10 23:34:49,199 INFO L130 PetriNetUnfolder]: For 393601/393749 co-relation queries the response was YES. [2020-02-10 23:34:49,233 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16045 conditions, 732 events. 67/732 cut-off events. For 393601/393749 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8110 event pairs. 0/716 useless extension candidates. Maximal degree in co-relation 15710. Up to 134 conditions per place. [2020-02-10 23:34:49,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 805 places, 252 transitions [2020-02-10 23:34:49,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 805 places, 252 transitions [2020-02-10 23:34:49,269 INFO L479 AbstractCegarLoop]: Abstraction has has 805 places, 252 transitions [2020-02-10 23:34:49,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:34:50,276 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:34:50,276 INFO L130 PetriNetUnfolder]: For 392256/392347 co-relation queries the response was YES. [2020-02-10 23:34:50,276 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:34:50,276 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:34:50,276 INFO L427 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:34:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:34:50,277 INFO L82 PathProgramCache]: Analyzing trace with hash 351955952, now seen corresponding path program 100 times [2020-02-10 23:34:50,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:34:50,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797162657] [2020-02-10 23:34:50,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:34:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:34:50,422 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 23:34:50,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797162657] [2020-02-10 23:34:50,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:34:50,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:34:50,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441276976] [2020-02-10 23:34:50,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:34:50,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:34:50,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:34:50,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:34:50,424 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:34:50,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 805 places, 252 transitions. Second operand 7 states. [2020-02-10 23:34:50,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:34:50,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:34:50,425 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:53,347 INFO L129 PetriNetUnfolder]: 67/731 cut-off events. [2020-02-10 23:34:53,347 INFO L130 PetriNetUnfolder]: For 403161/404145 co-relation queries the response was YES. [2020-02-10 23:34:53,384 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16205 conditions, 731 events. 67/731 cut-off events. For 403161/404145 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8015 event pairs. 44/761 useless extension candidates. Maximal degree in co-relation 15869. Up to 134 conditions per place. [2020-02-10 23:34:53,420 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 145 selfloop transitions, 98 changer transitions 0/255 dead transitions. [2020-02-10 23:34:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:34:53,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:34:53,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:34:53,421 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:34:53,421 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:34:53,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:34:53,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:53,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:34:53,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:34:53,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:34:53,423 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:34:53,423 INFO L178 Difference]: Start difference. First operand has 805 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:34:53,430 INFO L206 Difference]: Finished difference. Result has 812 places, 252 transitions [2020-02-10 23:34:53,431 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=27073, PETRI_DIFFERENCE_MINUEND_PLACES=805, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=27272, PETRI_PLACES=812, PETRI_TRANSITIONS=252} [2020-02-10 23:34:53,431 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 812 places, 252 transitions [2020-02-10 23:34:54,680 INFO L129 PetriNetUnfolder]: 67/731 cut-off events. [2020-02-10 23:34:54,680 INFO L130 PetriNetUnfolder]: For 393181/393269 co-relation queries the response was YES. [2020-02-10 23:34:54,718 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16065 conditions, 731 events. 67/731 cut-off events. For 393181/393269 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8099 event pairs. 0/715 useless extension candidates. Maximal degree in co-relation 15728. Up to 134 conditions per place. [2020-02-10 23:34:54,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 812 places, 252 transitions [2020-02-10 23:34:54,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 812 places, 252 transitions [2020-02-10 23:34:54,756 INFO L479 AbstractCegarLoop]: Abstraction has has 812 places, 252 transitions [2020-02-10 23:34:54,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:34:55,798 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:34:55,798 INFO L130 PetriNetUnfolder]: For 393181/393269 co-relation queries the response was YES. [2020-02-10 23:34:55,798 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:34:55,798 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:34:55,798 INFO L427 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:34:55,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:34:55,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1761422176, now seen corresponding path program 101 times [2020-02-10 23:34:55,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:34:55,799 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427510546] [2020-02-10 23:34:55,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:34:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:34:55,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:34:55,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427510546] [2020-02-10 23:34:55,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:34:55,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:34:55,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694180569] [2020-02-10 23:34:55,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:34:55,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:34:55,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:34:55,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:34:55,948 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:34:55,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 812 places, 252 transitions. Second operand 7 states. [2020-02-10 23:34:55,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:34:55,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:34:55,949 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:58,897 INFO L129 PetriNetUnfolder]: 67/730 cut-off events. [2020-02-10 23:34:58,897 INFO L130 PetriNetUnfolder]: For 403872/404826 co-relation queries the response was YES. [2020-02-10 23:34:58,930 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16223 conditions, 730 events. 67/730 cut-off events. For 403872/404826 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8010 event pairs. 44/760 useless extension candidates. Maximal degree in co-relation 15885. Up to 134 conditions per place. [2020-02-10 23:34:58,961 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 147 selfloop transitions, 95 changer transitions 0/254 dead transitions. [2020-02-10 23:34:58,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:34:58,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:34:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:34:58,962 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:34:58,962 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:34:58,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:34:58,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:58,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:34:58,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:34:58,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:34:58,963 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:34:58,964 INFO L178 Difference]: Start difference. First operand has 812 places, 252 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:34:58,970 INFO L206 Difference]: Finished difference. Result has 819 places, 252 transitions [2020-02-10 23:34:58,970 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=27272, PETRI_DIFFERENCE_MINUEND_PLACES=812, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=27465, PETRI_PLACES=819, PETRI_TRANSITIONS=252} [2020-02-10 23:34:58,970 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 819 places, 252 transitions [2020-02-10 23:35:00,215 INFO L129 PetriNetUnfolder]: 67/730 cut-off events. [2020-02-10 23:35:00,215 INFO L130 PetriNetUnfolder]: For 394002/394090 co-relation queries the response was YES. [2020-02-10 23:35:00,253 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16080 conditions, 730 events. 67/730 cut-off events. For 394002/394090 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8056 event pairs. 0/716 useless extension candidates. Maximal degree in co-relation 15741. Up to 134 conditions per place. [2020-02-10 23:35:00,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 819 places, 252 transitions [2020-02-10 23:35:00,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 819 places, 252 transitions [2020-02-10 23:35:00,291 INFO L479 AbstractCegarLoop]: Abstraction has has 819 places, 252 transitions [2020-02-10 23:35:00,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:35:01,323 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:35:01,323 INFO L130 PetriNetUnfolder]: For 394362/394504 co-relation queries the response was YES. [2020-02-10 23:35:01,323 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:01,323 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:01,323 INFO L427 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:01,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:01,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1976514170, now seen corresponding path program 102 times [2020-02-10 23:35:01,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:01,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673773781] [2020-02-10 23:35:01,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:01,467 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 23:35:01,467 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673773781] [2020-02-10 23:35:01,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:01,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:35:01,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116398292] [2020-02-10 23:35:01,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:35:01,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:01,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:35:01,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:35:01,469 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:35:01,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 819 places, 252 transitions. Second operand 7 states. [2020-02-10 23:35:01,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:01,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:35:01,470 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:04,405 INFO L129 PetriNetUnfolder]: 67/729 cut-off events. [2020-02-10 23:35:04,405 INFO L130 PetriNetUnfolder]: For 404181/405070 co-relation queries the response was YES. [2020-02-10 23:35:04,443 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16236 conditions, 729 events. 67/729 cut-off events. For 404181/405070 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7988 event pairs. 19/734 useless extension candidates. Maximal degree in co-relation 15896. Up to 134 conditions per place. [2020-02-10 23:35:04,481 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 132 selfloop transitions, 107 changer transitions 3/254 dead transitions. [2020-02-10 23:35:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:35:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:35:04,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:35:04,482 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:35:04,482 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:35:04,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:35:04,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:04,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:35:04,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:35:04,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:35:04,483 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:35:04,483 INFO L178 Difference]: Start difference. First operand has 819 places, 252 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:35:04,492 INFO L206 Difference]: Finished difference. Result has 826 places, 249 transitions [2020-02-10 23:35:04,492 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=27465, PETRI_DIFFERENCE_MINUEND_PLACES=819, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=27328, PETRI_PLACES=826, PETRI_TRANSITIONS=249} [2020-02-10 23:35:04,493 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 826 places, 249 transitions [2020-02-10 23:35:05,744 INFO L129 PetriNetUnfolder]: 66/719 cut-off events. [2020-02-10 23:35:05,744 INFO L130 PetriNetUnfolder]: For 391266/391408 co-relation queries the response was YES. [2020-02-10 23:35:05,778 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15928 conditions, 719 events. 66/719 cut-off events. For 391266/391408 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7924 event pairs. 0/704 useless extension candidates. Maximal degree in co-relation 15597. Up to 132 conditions per place. [2020-02-10 23:35:05,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 826 places, 249 transitions [2020-02-10 23:35:05,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 822 places, 249 transitions [2020-02-10 23:35:05,808 INFO L479 AbstractCegarLoop]: Abstraction has has 822 places, 249 transitions [2020-02-10 23:35:05,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:35:06,810 INFO L129 PetriNetUnfolder]: 66/701 cut-off events. [2020-02-10 23:35:06,810 INFO L130 PetriNetUnfolder]: For 392076/392266 co-relation queries the response was YES. [2020-02-10 23:35:06,810 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:06,810 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:06,810 INFO L427 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:06,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:06,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1161405578, now seen corresponding path program 103 times [2020-02-10 23:35:06,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:06,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090584691] [2020-02-10 23:35:06,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:06,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:35:06,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090584691] [2020-02-10 23:35:06,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:06,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:35:06,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283850932] [2020-02-10 23:35:06,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:35:06,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:06,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:35:06,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:35:06,952 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:35:06,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 822 places, 249 transitions. Second operand 7 states. [2020-02-10 23:35:06,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:06,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:35:06,953 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:09,868 INFO L129 PetriNetUnfolder]: 66/718 cut-off events. [2020-02-10 23:35:09,868 INFO L130 PetriNetUnfolder]: For 399043/399542 co-relation queries the response was YES. [2020-02-10 23:35:09,911 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16078 conditions, 718 events. 66/718 cut-off events. For 399043/399542 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7856 event pairs. 33/739 useless extension candidates. Maximal degree in co-relation 15737. Up to 132 conditions per place. [2020-02-10 23:35:09,954 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 140 selfloop transitions, 99 changer transitions 0/251 dead transitions. [2020-02-10 23:35:09,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:35:09,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:35:09,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:35:09,956 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:35:09,956 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:35:09,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:35:09,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:09,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:35:09,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:35:09,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:35:09,958 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:35:09,958 INFO L178 Difference]: Start difference. First operand has 822 places, 249 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:35:09,968 INFO L206 Difference]: Finished difference. Result has 829 places, 249 transitions [2020-02-10 23:35:09,968 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=27328, PETRI_DIFFERENCE_MINUEND_PLACES=822, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=27529, PETRI_PLACES=829, PETRI_TRANSITIONS=249} [2020-02-10 23:35:09,968 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 829 places, 249 transitions [2020-02-10 23:35:11,207 INFO L129 PetriNetUnfolder]: 66/718 cut-off events. [2020-02-10 23:35:11,207 INFO L130 PetriNetUnfolder]: For 392506/392696 co-relation queries the response was YES. [2020-02-10 23:35:11,245 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15942 conditions, 718 events. 66/718 cut-off events. For 392506/392696 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7860 event pairs. 0/702 useless extension candidates. Maximal degree in co-relation 15600. Up to 132 conditions per place. [2020-02-10 23:35:11,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 829 places, 249 transitions [2020-02-10 23:35:11,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 829 places, 249 transitions [2020-02-10 23:35:11,282 INFO L479 AbstractCegarLoop]: Abstraction has has 829 places, 249 transitions [2020-02-10 23:35:11,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:35:12,368 INFO L129 PetriNetUnfolder]: 66/701 cut-off events. [2020-02-10 23:35:12,368 INFO L130 PetriNetUnfolder]: For 392817/393011 co-relation queries the response was YES. [2020-02-10 23:35:12,368 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:12,368 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:12,369 INFO L427 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:12,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:12,369 INFO L82 PathProgramCache]: Analyzing trace with hash 2010874306, now seen corresponding path program 104 times [2020-02-10 23:35:12,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:12,369 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025181907] [2020-02-10 23:35:12,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:35:12,506 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025181907] [2020-02-10 23:35:12,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:12,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:35:12,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812371789] [2020-02-10 23:35:12,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:35:12,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:12,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:35:12,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:35:12,507 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:35:12,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 829 places, 249 transitions. Second operand 7 states. [2020-02-10 23:35:12,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:12,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:35:12,507 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:15,471 INFO L129 PetriNetUnfolder]: 66/717 cut-off events. [2020-02-10 23:35:15,472 INFO L130 PetriNetUnfolder]: For 399400/399899 co-relation queries the response was YES. [2020-02-10 23:35:15,504 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16091 conditions, 717 events. 66/717 cut-off events. For 399400/399899 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7827 event pairs. 11/716 useless extension candidates. Maximal degree in co-relation 15748. Up to 132 conditions per place. [2020-02-10 23:35:15,534 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 142 selfloop transitions, 86 changer transitions 11/251 dead transitions. [2020-02-10 23:35:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:35:15,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:35:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:35:15,535 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:35:15,535 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:35:15,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:35:15,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:15,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:35:15,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:35:15,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:35:15,536 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:35:15,536 INFO L178 Difference]: Start difference. First operand has 829 places, 249 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:35:15,542 INFO L206 Difference]: Finished difference. Result has 836 places, 238 transitions [2020-02-10 23:35:15,543 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=27529, PETRI_DIFFERENCE_MINUEND_PLACES=829, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26340, PETRI_PLACES=836, PETRI_TRANSITIONS=238} [2020-02-10 23:35:15,543 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 836 places, 238 transitions [2020-02-10 23:35:16,688 INFO L129 PetriNetUnfolder]: 63/684 cut-off events. [2020-02-10 23:35:16,688 INFO L130 PetriNetUnfolder]: For 377792/377986 co-relation queries the response was YES. [2020-02-10 23:35:16,724 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15249 conditions, 684 events. 63/684 cut-off events. For 377792/377986 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7407 event pairs. 0/669 useless extension candidates. Maximal degree in co-relation 14905. Up to 126 conditions per place. [2020-02-10 23:35:16,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 836 places, 238 transitions [2020-02-10 23:35:16,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 828 places, 238 transitions [2020-02-10 23:35:16,760 INFO L479 AbstractCegarLoop]: Abstraction has has 828 places, 238 transitions [2020-02-10 23:35:16,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:35:17,719 INFO L129 PetriNetUnfolder]: 63/668 cut-off events. [2020-02-10 23:35:17,720 INFO L130 PetriNetUnfolder]: For 377063/377234 co-relation queries the response was YES. [2020-02-10 23:35:17,720 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:17,720 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:17,720 INFO L427 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:17,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:17,720 INFO L82 PathProgramCache]: Analyzing trace with hash 837363570, now seen corresponding path program 105 times [2020-02-10 23:35:17,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:17,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959754214] [2020-02-10 23:35:17,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:35:17,875 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959754214] [2020-02-10 23:35:17,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:17,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:35:17,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400362725] [2020-02-10 23:35:17,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:35:17,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:17,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:35:17,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:35:17,876 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:35:17,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 828 places, 238 transitions. Second operand 7 states. [2020-02-10 23:35:17,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:17,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:35:17,876 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:20,645 INFO L129 PetriNetUnfolder]: 63/683 cut-off events. [2020-02-10 23:35:20,645 INFO L130 PetriNetUnfolder]: For 384309/384808 co-relation queries the response was YES. [2020-02-10 23:35:20,681 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15385 conditions, 683 events. 63/683 cut-off events. For 384309/384808 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7350 event pairs. 2/674 useless extension candidates. Maximal degree in co-relation 15040. Up to 126 conditions per place. [2020-02-10 23:35:20,716 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 134 selfloop transitions, 89 changer transitions 6/241 dead transitions. [2020-02-10 23:35:20,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:35:20,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:35:20,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:35:20,717 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:35:20,717 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:35:20,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:35:20,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:20,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:35:20,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:35:20,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:35:20,719 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:35:20,719 INFO L178 Difference]: Start difference. First operand has 828 places, 238 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:35:20,724 INFO L206 Difference]: Finished difference. Result has 835 places, 232 transitions [2020-02-10 23:35:20,725 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=26340, PETRI_DIFFERENCE_MINUEND_PLACES=828, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25822, PETRI_PLACES=835, PETRI_TRANSITIONS=232} [2020-02-10 23:35:20,725 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 835 places, 232 transitions [2020-02-10 23:35:21,843 INFO L129 PetriNetUnfolder]: 61/664 cut-off events. [2020-02-10 23:35:21,843 INFO L130 PetriNetUnfolder]: For 368904/369075 co-relation queries the response was YES. [2020-02-10 23:35:21,878 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14897 conditions, 664 events. 61/664 cut-off events. For 368904/369075 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7137 event pairs. 0/647 useless extension candidates. Maximal degree in co-relation 14551. Up to 122 conditions per place. [2020-02-10 23:35:21,878 INFO L82 GeneralOperation]: Start removeDead. Operand has 835 places, 232 transitions [2020-02-10 23:35:21,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 833 places, 232 transitions [2020-02-10 23:35:21,913 INFO L479 AbstractCegarLoop]: Abstraction has has 833 places, 232 transitions [2020-02-10 23:35:21,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:35:22,818 INFO L129 PetriNetUnfolder]: 61/649 cut-off events. [2020-02-10 23:35:22,818 INFO L130 PetriNetUnfolder]: For 368904/369075 co-relation queries the response was YES. [2020-02-10 23:35:22,818 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:22,818 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:22,818 INFO L427 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:22,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:22,819 INFO L82 PathProgramCache]: Analyzing trace with hash -772026050, now seen corresponding path program 106 times [2020-02-10 23:35:22,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:22,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874823940] [2020-02-10 23:35:22,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:22,941 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 23:35:22,941 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874823940] [2020-02-10 23:35:22,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:22,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:35:22,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708741860] [2020-02-10 23:35:22,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:35:22,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:22,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:35:22,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:35:22,942 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:35:22,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 833 places, 232 transitions. Second operand 7 states. [2020-02-10 23:35:22,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:22,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:35:22,943 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:25,655 INFO L129 PetriNetUnfolder]: 61/663 cut-off events. [2020-02-10 23:35:25,655 INFO L130 PetriNetUnfolder]: For 376165/376664 co-relation queries the response was YES. [2020-02-10 23:35:25,688 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15025 conditions, 663 events. 61/663 cut-off events. For 376165/376664 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7108 event pairs. 2/654 useless extension candidates. Maximal degree in co-relation 14678. Up to 122 conditions per place. [2020-02-10 23:35:25,718 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 132 selfloop transitions, 86 changer transitions 5/235 dead transitions. [2020-02-10 23:35:25,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:35:25,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:35:25,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:35:25,719 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:35:25,719 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:35:25,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:35:25,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:25,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:35:25,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:35:25,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:35:25,720 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:35:25,721 INFO L178 Difference]: Start difference. First operand has 833 places, 232 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:35:25,728 INFO L206 Difference]: Finished difference. Result has 840 places, 227 transitions [2020-02-10 23:35:25,728 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=25822, PETRI_DIFFERENCE_MINUEND_PLACES=833, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25370, PETRI_PLACES=840, PETRI_TRANSITIONS=227} [2020-02-10 23:35:25,728 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 840 places, 227 transitions [2020-02-10 23:35:26,796 INFO L129 PetriNetUnfolder]: 59/645 cut-off events. [2020-02-10 23:35:26,796 INFO L130 PetriNetUnfolder]: For 361340/361511 co-relation queries the response was YES. [2020-02-10 23:35:26,830 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14569 conditions, 645 events. 59/645 cut-off events. For 361340/361511 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6933 event pairs. 0/628 useless extension candidates. Maximal degree in co-relation 14231. Up to 118 conditions per place. [2020-02-10 23:35:26,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 840 places, 227 transitions [2020-02-10 23:35:26,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 833 places, 227 transitions [2020-02-10 23:35:26,864 INFO L479 AbstractCegarLoop]: Abstraction has has 833 places, 227 transitions [2020-02-10 23:35:26,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:35:27,786 INFO L129 PetriNetUnfolder]: 59/631 cut-off events. [2020-02-10 23:35:27,787 INFO L130 PetriNetUnfolder]: For 361340/361511 co-relation queries the response was YES. [2020-02-10 23:35:27,787 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:27,787 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:27,787 INFO L427 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:27,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:27,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1133469582, now seen corresponding path program 107 times [2020-02-10 23:35:27,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:27,787 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397849397] [2020-02-10 23:35:27,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:35:27,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397849397] [2020-02-10 23:35:27,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:27,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:35:27,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311588218] [2020-02-10 23:35:27,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:35:27,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:27,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:35:27,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:35:27,934 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:35:27,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 833 places, 227 transitions. Second operand 7 states. [2020-02-10 23:35:27,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:27,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:35:27,934 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:30,551 INFO L129 PetriNetUnfolder]: 59/644 cut-off events. [2020-02-10 23:35:30,552 INFO L130 PetriNetUnfolder]: For 368656/369155 co-relation queries the response was YES. [2020-02-10 23:35:30,586 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14687 conditions, 644 events. 59/644 cut-off events. For 368656/369155 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6859 event pairs. 33/666 useless extension candidates. Maximal degree in co-relation 14341. Up to 118 conditions per place. [2020-02-10 23:35:30,619 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 135 selfloop transitions, 83 changer transitions 0/230 dead transitions. [2020-02-10 23:35:30,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:35:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:35:30,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:35:30,620 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:35:30,620 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:35:30,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:35:30,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:30,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:35:30,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:35:30,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:35:30,621 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:35:30,621 INFO L178 Difference]: Start difference. First operand has 833 places, 227 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:35:30,626 INFO L206 Difference]: Finished difference. Result has 840 places, 227 transitions [2020-02-10 23:35:30,627 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=25370, PETRI_DIFFERENCE_MINUEND_PLACES=833, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25539, PETRI_PLACES=840, PETRI_TRANSITIONS=227} [2020-02-10 23:35:30,627 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 840 places, 227 transitions [2020-02-10 23:35:31,685 INFO L129 PetriNetUnfolder]: 59/644 cut-off events. [2020-02-10 23:35:31,685 INFO L130 PetriNetUnfolder]: For 360617/360788 co-relation queries the response was YES. [2020-02-10 23:35:31,720 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14557 conditions, 644 events. 59/644 cut-off events. For 360617/360788 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6893 event pairs. 0/628 useless extension candidates. Maximal degree in co-relation 14210. Up to 118 conditions per place. [2020-02-10 23:35:31,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 840 places, 227 transitions [2020-02-10 23:35:31,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 840 places, 227 transitions [2020-02-10 23:35:31,753 INFO L479 AbstractCegarLoop]: Abstraction has has 840 places, 227 transitions [2020-02-10 23:35:31,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:35:32,673 INFO L129 PetriNetUnfolder]: 59/631 cut-off events. [2020-02-10 23:35:32,673 INFO L130 PetriNetUnfolder]: For 360511/360657 co-relation queries the response was YES. [2020-02-10 23:35:32,673 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:32,673 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:32,674 INFO L427 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:32,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:32,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1001106212, now seen corresponding path program 108 times [2020-02-10 23:35:32,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:32,674 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621872319] [2020-02-10 23:35:32,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:32,804 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 23:35:32,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621872319] [2020-02-10 23:35:32,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:32,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:35:32,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225282643] [2020-02-10 23:35:32,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:35:32,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:32,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:35:32,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:35:32,806 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:35:32,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 840 places, 227 transitions. Second operand 7 states. [2020-02-10 23:35:32,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:32,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:35:32,806 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:35,457 INFO L129 PetriNetUnfolder]: 59/643 cut-off events. [2020-02-10 23:35:35,457 INFO L130 PetriNetUnfolder]: For 367842/368341 co-relation queries the response was YES. [2020-02-10 23:35:35,492 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14676 conditions, 643 events. 59/643 cut-off events. For 367842/368341 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6846 event pairs. 2/634 useless extension candidates. Maximal degree in co-relation 14328. Up to 118 conditions per place. [2020-02-10 23:35:35,526 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 130 selfloop transitions, 82 changer transitions 5/229 dead transitions. [2020-02-10 23:35:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:35:35,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:35:35,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:35:35,527 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:35:35,527 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:35:35,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:35:35,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:35,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:35:35,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:35:35,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:35:35,528 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:35:35,528 INFO L178 Difference]: Start difference. First operand has 840 places, 227 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:35:35,535 INFO L206 Difference]: Finished difference. Result has 847 places, 222 transitions [2020-02-10 23:35:35,535 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=25539, PETRI_DIFFERENCE_MINUEND_PLACES=840, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25095, PETRI_PLACES=847, PETRI_TRANSITIONS=222} [2020-02-10 23:35:35,535 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 847 places, 222 transitions [2020-02-10 23:35:36,561 INFO L129 PetriNetUnfolder]: 57/625 cut-off events. [2020-02-10 23:35:36,562 INFO L130 PetriNetUnfolder]: For 352415/352561 co-relation queries the response was YES. [2020-02-10 23:35:36,595 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14229 conditions, 625 events. 57/625 cut-off events. For 352415/352561 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6646 event pairs. 0/610 useless extension candidates. Maximal degree in co-relation 13880. Up to 114 conditions per place. [2020-02-10 23:35:36,596 INFO L82 GeneralOperation]: Start removeDead. Operand has 847 places, 222 transitions [2020-02-10 23:35:36,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 844 places, 222 transitions [2020-02-10 23:35:36,628 INFO L479 AbstractCegarLoop]: Abstraction has has 844 places, 222 transitions [2020-02-10 23:35:36,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:35:37,526 INFO L129 PetriNetUnfolder]: 57/613 cut-off events. [2020-02-10 23:35:37,526 INFO L130 PetriNetUnfolder]: For 352415/352561 co-relation queries the response was YES. [2020-02-10 23:35:37,526 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:37,527 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:37,527 INFO L427 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:37,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:37,527 INFO L82 PathProgramCache]: Analyzing trace with hash -412055562, now seen corresponding path program 109 times [2020-02-10 23:35:37,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:37,527 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010065065] [2020-02-10 23:35:37,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:35:37,680 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010065065] [2020-02-10 23:35:37,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:37,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:35:37,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232347786] [2020-02-10 23:35:37,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:35:37,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:37,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:35:37,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:35:37,682 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:35:37,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 844 places, 222 transitions. Second operand 7 states. [2020-02-10 23:35:37,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:37,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:35:37,682 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:40,234 INFO L129 PetriNetUnfolder]: 57/624 cut-off events. [2020-02-10 23:35:40,234 INFO L130 PetriNetUnfolder]: For 359666/360165 co-relation queries the response was YES. [2020-02-10 23:35:40,268 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14341 conditions, 624 events. 57/624 cut-off events. For 359666/360165 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6598 event pairs. 19/632 useless extension candidates. Maximal degree in co-relation 13991. Up to 114 conditions per place. [2020-02-10 23:35:40,300 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 119 selfloop transitions, 94 changer transitions 0/225 dead transitions. [2020-02-10 23:35:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:35:40,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:35:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:35:40,301 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:35:40,301 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:35:40,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:35:40,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:40,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:35:40,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:35:40,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:35:40,302 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:35:40,302 INFO L178 Difference]: Start difference. First operand has 844 places, 222 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:35:40,307 INFO L206 Difference]: Finished difference. Result has 851 places, 222 transitions [2020-02-10 23:35:40,308 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=25095, PETRI_DIFFERENCE_MINUEND_PLACES=844, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25286, PETRI_PLACES=851, PETRI_TRANSITIONS=222} [2020-02-10 23:35:40,308 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 851 places, 222 transitions [2020-02-10 23:35:41,340 INFO L129 PetriNetUnfolder]: 57/624 cut-off events. [2020-02-10 23:35:41,340 INFO L130 PetriNetUnfolder]: For 351691/351837 co-relation queries the response was YES. [2020-02-10 23:35:41,374 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14227 conditions, 624 events. 57/624 cut-off events. For 351691/351837 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6628 event pairs. 0/609 useless extension candidates. Maximal degree in co-relation 13876. Up to 114 conditions per place. [2020-02-10 23:35:41,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 851 places, 222 transitions [2020-02-10 23:35:41,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 851 places, 222 transitions [2020-02-10 23:35:41,407 INFO L479 AbstractCegarLoop]: Abstraction has has 851 places, 222 transitions [2020-02-10 23:35:41,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:35:42,289 INFO L129 PetriNetUnfolder]: 57/613 cut-off events. [2020-02-10 23:35:42,289 INFO L130 PetriNetUnfolder]: For 351691/351837 co-relation queries the response was YES. [2020-02-10 23:35:42,289 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:42,289 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:42,289 INFO L427 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:42,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:42,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1120035412, now seen corresponding path program 110 times [2020-02-10 23:35:42,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:42,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796140409] [2020-02-10 23:35:42,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:42,429 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 23:35:42,430 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796140409] [2020-02-10 23:35:42,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:42,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:35:42,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518010576] [2020-02-10 23:35:42,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:35:42,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:42,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:35:42,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:35:42,431 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:35:42,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 851 places, 222 transitions. Second operand 7 states. [2020-02-10 23:35:42,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:42,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:35:42,432 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:45,037 INFO L129 PetriNetUnfolder]: 57/623 cut-off events. [2020-02-10 23:35:45,037 INFO L130 PetriNetUnfolder]: For 358949/359452 co-relation queries the response was YES. [2020-02-10 23:35:45,069 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14337 conditions, 623 events. 57/623 cut-off events. For 358949/359452 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6605 event pairs. 2/614 useless extension candidates. Maximal degree in co-relation 13985. Up to 114 conditions per place. [2020-02-10 23:35:45,098 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 121 selfloop transitions, 87 changer transitions 4/224 dead transitions. [2020-02-10 23:35:45,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:35:45,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:35:45,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:35:45,099 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:35:45,099 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:35:45,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:35:45,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:45,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:35:45,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:35:45,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:35:45,099 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:35:45,100 INFO L178 Difference]: Start difference. First operand has 851 places, 222 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:35:45,105 INFO L206 Difference]: Finished difference. Result has 858 places, 218 transitions [2020-02-10 23:35:45,105 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=25286, PETRI_DIFFERENCE_MINUEND_PLACES=851, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25017, PETRI_PLACES=858, PETRI_TRANSITIONS=218} [2020-02-10 23:35:45,105 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 858 places, 218 transitions [2020-02-10 23:35:46,108 INFO L129 PetriNetUnfolder]: 56/612 cut-off events. [2020-02-10 23:35:46,108 INFO L130 PetriNetUnfolder]: For 345620/345766 co-relation queries the response was YES. [2020-02-10 23:35:46,141 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13993 conditions, 612 events. 56/612 cut-off events. For 345620/345766 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6504 event pairs. 0/597 useless extension candidates. Maximal degree in co-relation 13640. Up to 112 conditions per place. [2020-02-10 23:35:46,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 858 places, 218 transitions [2020-02-10 23:35:46,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 853 places, 218 transitions [2020-02-10 23:35:46,173 INFO L479 AbstractCegarLoop]: Abstraction has has 853 places, 218 transitions [2020-02-10 23:35:46,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:35:47,066 INFO L129 PetriNetUnfolder]: 56/602 cut-off events. [2020-02-10 23:35:47,066 INFO L130 PetriNetUnfolder]: For 345620/345766 co-relation queries the response was YES. [2020-02-10 23:35:47,066 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:47,066 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:47,066 INFO L427 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:47,066 INFO L82 PathProgramCache]: Analyzing trace with hash -781886628, now seen corresponding path program 111 times [2020-02-10 23:35:47,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:47,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218608975] [2020-02-10 23:35:47,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:35:47,197 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218608975] [2020-02-10 23:35:47,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:47,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:35:47,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400397354] [2020-02-10 23:35:47,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:35:47,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:47,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:35:47,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:35:47,198 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:35:47,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 853 places, 218 transitions. Second operand 7 states. [2020-02-10 23:35:47,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:47,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:35:47,199 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:49,728 INFO L129 PetriNetUnfolder]: 56/611 cut-off events. [2020-02-10 23:35:49,729 INFO L130 PetriNetUnfolder]: For 352905/353408 co-relation queries the response was YES. [2020-02-10 23:35:49,762 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14097 conditions, 611 events. 56/611 cut-off events. For 352905/353408 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6475 event pairs. 2/602 useless extension candidates. Maximal degree in co-relation 13743. Up to 112 conditions per place. [2020-02-10 23:35:49,791 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 122 selfloop transitions, 74 changer transitions 11/219 dead transitions. [2020-02-10 23:35:49,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:35:49,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:35:49,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2020-02-10 23:35:49,792 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8221024258760108 [2020-02-10 23:35:49,792 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2020-02-10 23:35:49,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2020-02-10 23:35:49,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:49,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2020-02-10 23:35:49,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:35:49,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:35:49,793 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:35:49,793 INFO L178 Difference]: Start difference. First operand has 853 places, 218 transitions. Second operand 7 states and 305 transitions. [2020-02-10 23:35:49,798 INFO L206 Difference]: Finished difference. Result has 860 places, 207 transitions [2020-02-10 23:35:49,799 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=25017, PETRI_DIFFERENCE_MINUEND_PLACES=853, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23674, PETRI_PLACES=860, PETRI_TRANSITIONS=207} [2020-02-10 23:35:49,799 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 860 places, 207 transitions [2020-02-10 23:35:50,720 INFO L129 PetriNetUnfolder]: 53/577 cut-off events. [2020-02-10 23:35:50,720 INFO L130 PetriNetUnfolder]: For 325597/325743 co-relation queries the response was YES. [2020-02-10 23:35:50,751 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13212 conditions, 577 events. 53/577 cut-off events. For 325597/325743 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6030 event pairs. 0/561 useless extension candidates. Maximal degree in co-relation 12857. Up to 106 conditions per place. [2020-02-10 23:35:50,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 860 places, 207 transitions [2020-02-10 23:35:50,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 852 places, 207 transitions [2020-02-10 23:35:50,781 INFO L479 AbstractCegarLoop]: Abstraction has has 852 places, 207 transitions [2020-02-10 23:35:50,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:35:51,621 INFO L129 PetriNetUnfolder]: 53/568 cut-off events. [2020-02-10 23:35:51,621 INFO L130 PetriNetUnfolder]: For 325643/325799 co-relation queries the response was YES. [2020-02-10 23:35:51,621 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:51,621 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:51,621 INFO L427 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:51,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1890195748, now seen corresponding path program 112 times [2020-02-10 23:35:51,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:51,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320923123] [2020-02-10 23:35:51,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:51,757 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 23:35:51,758 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320923123] [2020-02-10 23:35:51,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:51,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:35:51,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288909515] [2020-02-10 23:35:51,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:35:51,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:51,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:35:51,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:35:51,760 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:35:51,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 852 places, 207 transitions. Second operand 7 states. [2020-02-10 23:35:51,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:51,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:35:51,760 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:54,133 INFO L129 PetriNetUnfolder]: 53/576 cut-off events. [2020-02-10 23:35:54,133 INFO L130 PetriNetUnfolder]: For 333215/333767 co-relation queries the response was YES. [2020-02-10 23:35:54,164 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13303 conditions, 576 events. 53/576 cut-off events. For 333215/333767 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5948 event pairs. 19/583 useless extension candidates. Maximal degree in co-relation 12947. Up to 106 conditions per place. [2020-02-10 23:35:54,193 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 80 selfloop transitions, 67 changer transitions 49/208 dead transitions. [2020-02-10 23:35:54,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:35:54,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:35:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2020-02-10 23:35:54,194 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8221024258760108 [2020-02-10 23:35:54,194 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2020-02-10 23:35:54,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2020-02-10 23:35:54,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:54,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2020-02-10 23:35:54,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:35:54,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:35:54,195 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:35:54,195 INFO L178 Difference]: Start difference. First operand has 852 places, 207 transitions. Second operand 7 states and 305 transitions. [2020-02-10 23:35:54,199 INFO L206 Difference]: Finished difference. Result has 859 places, 158 transitions [2020-02-10 23:35:54,199 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=23674, PETRI_DIFFERENCE_MINUEND_PLACES=852, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17254, PETRI_PLACES=859, PETRI_TRANSITIONS=158} [2020-02-10 23:35:54,199 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 859 places, 158 transitions [2020-02-10 23:35:54,834 INFO L129 PetriNetUnfolder]: 42/436 cut-off events. [2020-02-10 23:35:54,834 INFO L130 PetriNetUnfolder]: For 243729/243887 co-relation queries the response was YES. [2020-02-10 23:35:54,857 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9876 conditions, 436 events. 42/436 cut-off events. For 243729/243887 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4214 event pairs. 0/424 useless extension candidates. Maximal degree in co-relation 9529. Up to 84 conditions per place. [2020-02-10 23:35:54,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 859 places, 158 transitions [2020-02-10 23:35:54,878 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 816 places, 158 transitions [2020-02-10 23:35:54,879 INFO L479 AbstractCegarLoop]: Abstraction has has 816 places, 158 transitions [2020-02-10 23:35:54,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:35:55,447 INFO L129 PetriNetUnfolder]: 42/428 cut-off events. [2020-02-10 23:35:55,447 INFO L130 PetriNetUnfolder]: For 243313/243433 co-relation queries the response was YES. [2020-02-10 23:35:55,447 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:55,447 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:55,447 INFO L427 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:55,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:55,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1651410814, now seen corresponding path program 113 times [2020-02-10 23:35:55,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:55,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767466491] [2020-02-10 23:35:55,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:55,580 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 23:35:55,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767466491] [2020-02-10 23:35:55,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:55,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:35:55,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115883232] [2020-02-10 23:35:55,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:35:55,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:55,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:35:55,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:35:55,582 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:35:55,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 816 places, 158 transitions. Second operand 7 states. [2020-02-10 23:35:55,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:55,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:35:55,582 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:57,336 INFO L129 PetriNetUnfolder]: 42/435 cut-off events. [2020-02-10 23:35:57,336 INFO L130 PetriNetUnfolder]: For 249357/249799 co-relation queries the response was YES. [2020-02-10 23:35:57,359 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9915 conditions, 435 events. 42/435 cut-off events. For 249357/249799 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4108 event pairs. 16/441 useless extension candidates. Maximal degree in co-relation 9558. Up to 84 conditions per place. [2020-02-10 23:35:57,381 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 92 selfloop transitions, 56 changer transitions 0/160 dead transitions. [2020-02-10 23:35:57,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:35:57,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:35:57,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:35:57,382 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:35:57,382 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:35:57,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:35:57,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:57,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:35:57,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:35:57,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:35:57,383 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:35:57,383 INFO L178 Difference]: Start difference. First operand has 816 places, 158 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:35:57,387 INFO L206 Difference]: Finished difference. Result has 823 places, 158 transitions [2020-02-10 23:35:57,387 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=17254, PETRI_DIFFERENCE_MINUEND_PLACES=816, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17369, PETRI_PLACES=823, PETRI_TRANSITIONS=158} [2020-02-10 23:35:57,387 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 823 places, 158 transitions [2020-02-10 23:35:58,020 INFO L129 PetriNetUnfolder]: 42/435 cut-off events. [2020-02-10 23:35:58,021 INFO L130 PetriNetUnfolder]: For 240242/240365 co-relation queries the response was YES. [2020-02-10 23:35:58,043 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9827 conditions, 435 events. 42/435 cut-off events. For 240242/240365 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4205 event pairs. 0/425 useless extension candidates. Maximal degree in co-relation 9469. Up to 84 conditions per place. [2020-02-10 23:35:58,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 823 places, 158 transitions [2020-02-10 23:35:58,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 823 places, 158 transitions [2020-02-10 23:35:58,066 INFO L479 AbstractCegarLoop]: Abstraction has has 823 places, 158 transitions [2020-02-10 23:35:58,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:35:58,637 INFO L129 PetriNetUnfolder]: 42/428 cut-off events. [2020-02-10 23:35:58,638 INFO L130 PetriNetUnfolder]: For 241673/241835 co-relation queries the response was YES. [2020-02-10 23:35:58,638 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:58,638 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:58,638 INFO L427 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:58,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:58,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1952229606, now seen corresponding path program 114 times [2020-02-10 23:35:58,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:58,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895867121] [2020-02-10 23:35:58,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:35:58,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895867121] [2020-02-10 23:35:58,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:58,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:35:58,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455927219] [2020-02-10 23:35:58,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:35:58,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:58,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:35:58,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:35:58,777 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:35:58,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 823 places, 158 transitions. Second operand 7 states. [2020-02-10 23:35:58,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:58,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:35:58,777 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:36:00,531 INFO L129 PetriNetUnfolder]: 42/434 cut-off events. [2020-02-10 23:36:00,531 INFO L130 PetriNetUnfolder]: For 243493/243862 co-relation queries the response was YES. [2020-02-10 23:36:00,554 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9865 conditions, 434 events. 42/434 cut-off events. For 243493/243862 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4120 event pairs. 8/432 useless extension candidates. Maximal degree in co-relation 9506. Up to 84 conditions per place. [2020-02-10 23:36:00,576 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 78 selfloop transitions, 70 changer transitions 0/160 dead transitions. [2020-02-10 23:36:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:36:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:36:00,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:36:00,577 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:36:00,577 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:36:00,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:36:00,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:36:00,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:36:00,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:36:00,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:36:00,578 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:36:00,578 INFO L178 Difference]: Start difference. First operand has 823 places, 158 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:36:00,581 INFO L206 Difference]: Finished difference. Result has 830 places, 158 transitions [2020-02-10 23:36:00,582 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=17369, PETRI_DIFFERENCE_MINUEND_PLACES=823, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17512, PETRI_PLACES=830, PETRI_TRANSITIONS=158} [2020-02-10 23:36:00,582 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 830 places, 158 transitions [2020-02-10 23:36:01,211 INFO L129 PetriNetUnfolder]: 42/434 cut-off events. [2020-02-10 23:36:01,211 INFO L130 PetriNetUnfolder]: For 238806/238968 co-relation queries the response was YES. [2020-02-10 23:36:01,234 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9791 conditions, 434 events. 42/434 cut-off events. For 238806/238968 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4182 event pairs. 0/423 useless extension candidates. Maximal degree in co-relation 9431. Up to 84 conditions per place. [2020-02-10 23:36:01,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 830 places, 158 transitions [2020-02-10 23:36:01,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 830 places, 158 transitions [2020-02-10 23:36:01,256 INFO L479 AbstractCegarLoop]: Abstraction has has 830 places, 158 transitions [2020-02-10 23:36:01,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:36:01,834 INFO L129 PetriNetUnfolder]: 42/428 cut-off events. [2020-02-10 23:36:01,835 INFO L130 PetriNetUnfolder]: For 238806/238968 co-relation queries the response was YES. [2020-02-10 23:36:01,835 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:36:01,835 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:36:01,835 INFO L427 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:36:01,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:36:01,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1495311042, now seen corresponding path program 115 times [2020-02-10 23:36:01,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:36:01,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530694174] [2020-02-10 23:36:01,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:36:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:36:01,965 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 23:36:01,965 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530694174] [2020-02-10 23:36:01,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:36:01,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:36:01,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787473747] [2020-02-10 23:36:01,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:36:01,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:36:01,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:36:01,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:36:01,966 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:36:01,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 830 places, 158 transitions. Second operand 7 states. [2020-02-10 23:36:01,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:36:01,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:36:01,967 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:36:03,725 INFO L129 PetriNetUnfolder]: 42/433 cut-off events. [2020-02-10 23:36:03,725 INFO L130 PetriNetUnfolder]: For 241936/242554 co-relation queries the response was YES. [2020-02-10 23:36:03,748 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9827 conditions, 433 events. 42/433 cut-off events. For 241936/242554 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4091 event pairs. 2/423 useless extension candidates. Maximal degree in co-relation 9466. Up to 84 conditions per place. [2020-02-10 23:36:03,769 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 103 selfloop transitions, 27 changer transitions 17/159 dead transitions. [2020-02-10 23:36:03,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:36:03,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:36:03,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2020-02-10 23:36:03,770 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8221024258760108 [2020-02-10 23:36:03,770 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2020-02-10 23:36:03,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2020-02-10 23:36:03,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:36:03,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2020-02-10 23:36:03,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:36:03,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:36:03,771 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:36:03,771 INFO L178 Difference]: Start difference. First operand has 830 places, 158 transitions. Second operand 7 states and 305 transitions. [2020-02-10 23:36:03,774 INFO L206 Difference]: Finished difference. Result has 837 places, 141 transitions [2020-02-10 23:36:03,775 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=17512, PETRI_DIFFERENCE_MINUEND_PLACES=830, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15441, PETRI_PLACES=837, PETRI_TRANSITIONS=141} [2020-02-10 23:36:03,775 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 837 places, 141 transitions [2020-02-10 23:36:04,327 INFO L129 PetriNetUnfolder]: 37/382 cut-off events. [2020-02-10 23:36:04,327 INFO L130 PetriNetUnfolder]: For 208957/209122 co-relation queries the response was YES. [2020-02-10 23:36:04,347 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8628 conditions, 382 events. 37/382 cut-off events. For 208957/209122 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3533 event pairs. 0/372 useless extension candidates. Maximal degree in co-relation 8266. Up to 74 conditions per place. [2020-02-10 23:36:04,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 837 places, 141 transitions [2020-02-10 23:36:04,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 823 places, 141 transitions [2020-02-10 23:36:04,366 INFO L479 AbstractCegarLoop]: Abstraction has has 823 places, 141 transitions [2020-02-10 23:36:04,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:36:04,873 INFO L129 PetriNetUnfolder]: 37/377 cut-off events. [2020-02-10 23:36:04,873 INFO L130 PetriNetUnfolder]: For 208957/209122 co-relation queries the response was YES. [2020-02-10 23:36:04,873 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:36:04,873 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:36:04,873 INFO L427 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:36:04,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:36:04,873 INFO L82 PathProgramCache]: Analyzing trace with hash 527626382, now seen corresponding path program 116 times [2020-02-10 23:36:04,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:36:04,874 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824910107] [2020-02-10 23:36:04,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:36:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:36:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:36:05,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824910107] [2020-02-10 23:36:05,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:36:05,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:36:05,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517057521] [2020-02-10 23:36:05,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:36:05,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:36:05,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:36:05,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:36:05,039 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:36:05,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 823 places, 141 transitions. Second operand 7 states. [2020-02-10 23:36:05,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:36:05,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:36:05,039 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:36:06,587 INFO L129 PetriNetUnfolder]: 37/381 cut-off events. [2020-02-10 23:36:06,587 INFO L130 PetriNetUnfolder]: For 211660/212301 co-relation queries the response was YES. [2020-02-10 23:36:06,607 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8645 conditions, 381 events. 37/381 cut-off events. For 211660/212301 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3491 event pairs. 19/388 useless extension candidates. Maximal degree in co-relation 8282. Up to 74 conditions per place. [2020-02-10 23:36:06,626 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 71 selfloop transitions, 60 changer transitions 0/143 dead transitions. [2020-02-10 23:36:06,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:36:06,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:36:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:36:06,627 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:36:06,627 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:36:06,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:36:06,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:36:06,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:36:06,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:36:06,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:36:06,628 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:36:06,628 INFO L178 Difference]: Start difference. First operand has 823 places, 141 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:36:06,631 INFO L206 Difference]: Finished difference. Result has 830 places, 141 transitions [2020-02-10 23:36:06,631 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=15441, PETRI_DIFFERENCE_MINUEND_PLACES=823, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15564, PETRI_PLACES=830, PETRI_TRANSITIONS=141} [2020-02-10 23:36:06,631 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 830 places, 141 transitions [2020-02-10 23:36:07,190 INFO L129 PetriNetUnfolder]: 37/381 cut-off events. [2020-02-10 23:36:07,191 INFO L130 PetriNetUnfolder]: For 205244/205409 co-relation queries the response was YES. [2020-02-10 23:36:07,210 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8578 conditions, 381 events. 37/381 cut-off events. For 205244/205409 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3535 event pairs. 0/371 useless extension candidates. Maximal degree in co-relation 8214. Up to 74 conditions per place. [2020-02-10 23:36:07,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 830 places, 141 transitions [2020-02-10 23:36:07,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 830 places, 141 transitions [2020-02-10 23:36:07,226 INFO L479 AbstractCegarLoop]: Abstraction has has 830 places, 141 transitions [2020-02-10 23:36:07,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:36:07,731 INFO L129 PetriNetUnfolder]: 37/377 cut-off events. [2020-02-10 23:36:07,731 INFO L130 PetriNetUnfolder]: For 202573/202654 co-relation queries the response was YES. [2020-02-10 23:36:07,731 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:36:07,731 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:36:07,731 INFO L427 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:36:07,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:36:07,731 INFO L82 PathProgramCache]: Analyzing trace with hash -928606180, now seen corresponding path program 117 times [2020-02-10 23:36:07,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:36:07,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107005849] [2020-02-10 23:36:07,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:36:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:36:07,849 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 23:36:07,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107005849] [2020-02-10 23:36:07,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:36:07,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:36:07,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900739837] [2020-02-10 23:36:07,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:36:07,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:36:07,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:36:07,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:36:07,850 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:36:07,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 830 places, 141 transitions. Second operand 7 states. [2020-02-10 23:36:07,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:36:07,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:36:07,850 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:36:09,385 INFO L129 PetriNetUnfolder]: 37/380 cut-off events. [2020-02-10 23:36:09,386 INFO L130 PetriNetUnfolder]: For 207649/208202 co-relation queries the response was YES. [2020-02-10 23:36:09,406 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8593 conditions, 380 events. 37/380 cut-off events. For 207649/208202 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3465 event pairs. 16/384 useless extension candidates. Maximal degree in co-relation 8228. Up to 74 conditions per place. [2020-02-10 23:36:09,424 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 67 selfloop transitions, 52 changer transitions 11/142 dead transitions. [2020-02-10 23:36:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:36:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:36:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2020-02-10 23:36:09,424 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8221024258760108 [2020-02-10 23:36:09,425 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2020-02-10 23:36:09,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2020-02-10 23:36:09,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:36:09,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2020-02-10 23:36:09,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:36:09,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:36:09,425 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:36:09,425 INFO L178 Difference]: Start difference. First operand has 830 places, 141 transitions. Second operand 7 states and 305 transitions. [2020-02-10 23:36:09,429 INFO L206 Difference]: Finished difference. Result has 837 places, 130 transitions [2020-02-10 23:36:09,429 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=15564, PETRI_DIFFERENCE_MINUEND_PLACES=830, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14139, PETRI_PLACES=837, PETRI_TRANSITIONS=130} [2020-02-10 23:36:09,429 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 837 places, 130 transitions [2020-02-10 23:36:09,896 INFO L129 PetriNetUnfolder]: 34/347 cut-off events. [2020-02-10 23:36:09,896 INFO L130 PetriNetUnfolder]: For 179210/179291 co-relation queries the response was YES. [2020-02-10 23:36:09,915 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7745 conditions, 347 events. 34/347 cut-off events. For 179210/179291 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3148 event pairs. 0/338 useless extension candidates. Maximal degree in co-relation 7389. Up to 68 conditions per place. [2020-02-10 23:36:09,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 837 places, 130 transitions [2020-02-10 23:36:09,931 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 803 places, 130 transitions [2020-02-10 23:36:09,932 INFO L479 AbstractCegarLoop]: Abstraction has has 803 places, 130 transitions [2020-02-10 23:36:09,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:36:10,400 INFO L129 PetriNetUnfolder]: 34/344 cut-off events. [2020-02-10 23:36:10,400 INFO L130 PetriNetUnfolder]: For 179456/179553 co-relation queries the response was YES. [2020-02-10 23:36:10,400 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:36:10,400 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:36:10,400 INFO L427 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:36:10,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:36:10,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1533123864, now seen corresponding path program 118 times [2020-02-10 23:36:10,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:36:10,401 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903043551] [2020-02-10 23:36:10,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:36:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:36:10,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:36:10,536 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903043551] [2020-02-10 23:36:10,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:36:10,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:36:10,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459348842] [2020-02-10 23:36:10,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:36:10,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:36:10,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:36:10,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:36:10,538 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:36:10,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 803 places, 130 transitions. Second operand 7 states. [2020-02-10 23:36:10,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:36:10,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:36:10,538 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:36:11,906 INFO L129 PetriNetUnfolder]: 34/346 cut-off events. [2020-02-10 23:36:11,906 INFO L130 PetriNetUnfolder]: For 183432/183870 co-relation queries the response was YES. [2020-02-10 23:36:11,924 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7744 conditions, 346 events. 34/346 cut-off events. For 183432/183870 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3087 event pairs. 10/345 useless extension candidates. Maximal degree in co-relation 7380. Up to 68 conditions per place. [2020-02-10 23:36:11,940 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 63 selfloop transitions, 56 changer transitions 0/131 dead transitions. [2020-02-10 23:36:11,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:36:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:36:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2020-02-10 23:36:11,941 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8221024258760108 [2020-02-10 23:36:11,941 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2020-02-10 23:36:11,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2020-02-10 23:36:11,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:36:11,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2020-02-10 23:36:11,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:36:11,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:36:11,942 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:36:11,942 INFO L178 Difference]: Start difference. First operand has 803 places, 130 transitions. Second operand 7 states and 305 transitions. [2020-02-10 23:36:11,945 INFO L206 Difference]: Finished difference. Result has 810 places, 130 transitions [2020-02-10 23:36:11,946 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=14139, PETRI_DIFFERENCE_MINUEND_PLACES=803, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14254, PETRI_PLACES=810, PETRI_TRANSITIONS=130} [2020-02-10 23:36:11,946 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 810 places, 130 transitions [2020-02-10 23:36:12,407 INFO L129 PetriNetUnfolder]: 34/346 cut-off events. [2020-02-10 23:36:12,407 INFO L130 PetriNetUnfolder]: For 175188/175285 co-relation queries the response was YES. [2020-02-10 23:36:12,425 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7684 conditions, 346 events. 34/346 cut-off events. For 175188/175285 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3139 event pairs. 0/336 useless extension candidates. Maximal degree in co-relation 7319. Up to 68 conditions per place. [2020-02-10 23:36:12,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 810 places, 130 transitions [2020-02-10 23:36:12,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 810 places, 130 transitions [2020-02-10 23:36:12,442 INFO L479 AbstractCegarLoop]: Abstraction has has 810 places, 130 transitions [2020-02-10 23:36:12,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:36:12,896 INFO L129 PetriNetUnfolder]: 34/344 cut-off events. [2020-02-10 23:36:12,897 INFO L130 PetriNetUnfolder]: For 177177/177345 co-relation queries the response was YES. [2020-02-10 23:36:12,897 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:36:12,897 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:36:12,897 INFO L427 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:36:12,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:36:12,897 INFO L82 PathProgramCache]: Analyzing trace with hash -545035420, now seen corresponding path program 119 times [2020-02-10 23:36:12,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:36:12,897 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239932884] [2020-02-10 23:36:12,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:36:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:36:13,040 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 23:36:13,040 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239932884] [2020-02-10 23:36:13,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:36:13,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:36:13,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318233904] [2020-02-10 23:36:13,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:36:13,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:36:13,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:36:13,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:36:13,041 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:36:13,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 130 transitions. Second operand 7 states. [2020-02-10 23:36:13,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:36:13,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:36:13,042 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:36:14,414 INFO L129 PetriNetUnfolder]: 34/345 cut-off events. [2020-02-10 23:36:14,414 INFO L130 PetriNetUnfolder]: For 181935/182462 co-relation queries the response was YES. [2020-02-10 23:36:14,433 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7684 conditions, 345 events. 34/345 cut-off events. For 181935/182462 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3085 event pairs. 11/346 useless extension candidates. Maximal degree in co-relation 7318. Up to 69 conditions per place. [2020-02-10 23:36:14,448 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 72 selfloop transitions, 42 changer transitions 4/130 dead transitions. [2020-02-10 23:36:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:36:14,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:36:14,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 303 transitions. [2020-02-10 23:36:14,449 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.816711590296496 [2020-02-10 23:36:14,449 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 303 transitions. [2020-02-10 23:36:14,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 303 transitions. [2020-02-10 23:36:14,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:36:14,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 303 transitions. [2020-02-10 23:36:14,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:36:14,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:36:14,450 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:36:14,450 INFO L178 Difference]: Start difference. First operand has 810 places, 130 transitions. Second operand 7 states and 303 transitions. [2020-02-10 23:36:14,453 INFO L206 Difference]: Finished difference. Result has 817 places, 126 transitions [2020-02-10 23:36:14,454 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=14254, PETRI_DIFFERENCE_MINUEND_PLACES=810, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13872, PETRI_PLACES=817, PETRI_TRANSITIONS=126} [2020-02-10 23:36:14,454 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 817 places, 126 transitions [2020-02-10 23:36:14,904 INFO L129 PetriNetUnfolder]: 33/334 cut-off events. [2020-02-10 23:36:14,904 INFO L130 PetriNetUnfolder]: For 166107/166253 co-relation queries the response was YES. [2020-02-10 23:36:14,924 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7377 conditions, 334 events. 33/334 cut-off events. For 166107/166253 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3018 event pairs. 0/323 useless extension candidates. Maximal degree in co-relation 7020. Up to 66 conditions per place. [2020-02-10 23:36:14,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 817 places, 126 transitions [2020-02-10 23:36:14,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 798 places, 126 transitions [2020-02-10 23:36:14,941 INFO L479 AbstractCegarLoop]: Abstraction has has 798 places, 126 transitions [2020-02-10 23:36:14,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:36:15,382 INFO L129 PetriNetUnfolder]: 33/333 cut-off events. [2020-02-10 23:36:15,382 INFO L130 PetriNetUnfolder]: For 166107/166248 co-relation queries the response was YES. [2020-02-10 23:36:15,382 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:36:15,382 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:36:15,382 INFO L427 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:36:15,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:36:15,383 INFO L82 PathProgramCache]: Analyzing trace with hash -475463900, now seen corresponding path program 120 times [2020-02-10 23:36:15,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:36:15,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492521413] [2020-02-10 23:36:15,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:36:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:36:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:36:15,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492521413] [2020-02-10 23:36:15,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:36:15,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:36:15,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653607177] [2020-02-10 23:36:15,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:36:15,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:36:15,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:36:15,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:36:15,522 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:36:15,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 798 places, 126 transitions. Second operand 7 states. [2020-02-10 23:36:15,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:36:15,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:36:15,522 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:36:16,853 INFO L129 PetriNetUnfolder]: 33/333 cut-off events. [2020-02-10 23:36:16,853 INFO L130 PetriNetUnfolder]: For 169981/170405 co-relation queries the response was YES. [2020-02-10 23:36:16,871 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7368 conditions, 333 events. 33/333 cut-off events. For 169981/170405 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 2963 event pairs. 13/336 useless extension candidates. Maximal degree in co-relation 7013. Up to 66 conditions per place. [2020-02-10 23:36:16,875 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 0 selfloop transitions, 0 changer transitions 125/125 dead transitions. [2020-02-10 23:36:16,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:36:16,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:36:16,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2020-02-10 23:36:16,876 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2020-02-10 23:36:16,876 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2020-02-10 23:36:16,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2020-02-10 23:36:16,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:36:16,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2020-02-10 23:36:16,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:36:16,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:36:16,877 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:36:16,877 INFO L178 Difference]: Start difference. First operand has 798 places, 126 transitions. Second operand 7 states and 302 transitions. [2020-02-10 23:36:16,877 INFO L206 Difference]: Finished difference. Result has 804 places, 0 transitions [2020-02-10 23:36:16,877 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=13872, PETRI_DIFFERENCE_MINUEND_PLACES=798, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=804, PETRI_TRANSITIONS=0} [2020-02-10 23:36:16,877 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 804 places, 0 transitions [2020-02-10 23:36:16,888 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2020-02-10 23:36:16,888 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-02-10 23:36:16,888 INFO L76 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-02-10 23:36:16,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 804 places, 0 transitions [2020-02-10 23:36:16,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions [2020-02-10 23:36:16,889 INFO L479 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions [2020-02-10 23:36:16,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:36:16,889 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2020-02-10 23:36:16,889 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-02-10 23:36:16,893 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:36:16 BasicIcfg [2020-02-10 23:36:16,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 23:36:16,896 INFO L168 Benchmark]: Toolchain (without parser) took 459830.61 ms. Allocated memory was 137.9 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 119.8 MB in the beginning and 2.3 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-02-10 23:36:16,896 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-02-10 23:36:16,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.66 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 117.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-02-10 23:36:16,897 INFO L168 Benchmark]: Boogie Preprocessor took 19.17 ms. Allocated memory is still 137.9 MB. Free memory was 117.7 MB in the beginning and 116.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-02-10 23:36:16,897 INFO L168 Benchmark]: RCFGBuilder took 260.97 ms. Allocated memory is still 137.9 MB. Free memory was 116.5 MB in the beginning and 104.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-02-10 23:36:16,898 INFO L168 Benchmark]: TraceAbstraction took 459509.86 ms. Allocated memory was 137.9 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 104.8 MB in the beginning and 2.3 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-02-10 23:36:16,899 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 0.19 ms. Allocated memory is still 137.9 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.66 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 117.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.17 ms. Allocated memory is still 137.9 MB. Free memory was 117.7 MB in the beginning and 116.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 260.97 ms. Allocated memory is still 137.9 MB. Free memory was 116.5 MB in the beginning and 104.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 459509.86 ms. Allocated memory was 137.9 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 104.8 MB in the beginning and 2.3 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.1s, 37 ProgramPointsBefore, 32 ProgramPointsAfterwards, 41 TransitionsBefore, 36 TransitionsAfterwards, 440 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 120 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 130 CheckedPairsTotal, 5 TotalNumberOfCompositions - PositiveResult [Line: 23]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 459.3s, OverallIterations: 123, TraceHistogramMax: 1, AutomataDifference: 245.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 1732 SDtfs, 1775 SDslu, 1276 SDs, 0 SdLazy, 3124 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 849 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 723 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 20.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=279occurred in iteration=76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 119.3s AutomataMinimizationTime, 123 MinimizatonAttempts, 995 StatesRemovedByMinimization, 123 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 18.7s InterpolantComputationTime, 1968 NumberOfCodeBlocks, 1968 NumberOfCodeBlocksAsserted, 123 NumberOfCheckSat, 1845 ConstructedInterpolants, 0 QuantifiedInterpolants, 442710 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 123 InterpolantComputations, 123 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...