/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-10 23:00:03,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 23:00:03,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 23:00:03,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 23:00:03,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 23:00:03,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 23:00:03,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 23:00:03,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 23:00:03,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 23:00:03,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 23:00:03,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 23:00:03,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 23:00:03,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 23:00:03,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 23:00:03,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 23:00:03,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 23:00:03,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 23:00:03,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 23:00:03,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 23:00:03,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 23:00:03,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 23:00:03,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 23:00:03,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 23:00:03,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 23:00:03,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-10 23:00:03,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-02-10 23:00:04,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 23:00:04,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 23:00:04,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 23:00:04,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 23:00:04,018 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 23:00:04,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 23:00:04,018 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 23:00:04,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 23:00:04,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 23:00:04,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 23:00:04,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 23:00:04,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 23:00:04,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 23:00:04,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 23:00:04,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 23:00:04,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 23:00:04,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 23:00:04,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 23:00:04,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 23:00:04,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 23:00:04,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 23:00:04,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:00:04,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 23:00:04,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 23:00:04,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 23:00:04,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 23:00:04,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 23:00:04,023 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-10 23:00:04,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 23:00:04,363 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 23:00:04,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 23:00:04,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 23:00:04,390 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 23:00:04,391 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 23:00:04,392 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl [2020-02-10 23:00:04,392 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl' [2020-02-10 23:00:04,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 23:00:04,434 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 23:00:04,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 23:00:04,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 23:00:04,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 23:00:04,452 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 11:00:04" (1/1) ... [2020-02-10 23:00:04,461 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 11:00:04" (1/1) ... [2020-02-10 23:00:04,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 23:00:04,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 23:00:04,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 23:00:04,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 23:00:04,484 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 11:00:04" (1/1) ... [2020-02-10 23:00:04,485 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 11:00:04" (1/1) ... [2020-02-10 23:00:04,485 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 11:00:04" (1/1) ... [2020-02-10 23:00:04,486 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 11:00:04" (1/1) ... [2020-02-10 23:00:04,491 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 11:00:04" (1/1) ... [2020-02-10 23:00:04,493 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 11:00:04" (1/1) ... [2020-02-10 23:00:04,493 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 11:00:04" (1/1) ... [2020-02-10 23:00:04,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 23:00:04,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 23:00:04,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 23:00:04,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 23:00:04,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:00:04,579 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 23:00:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 23:00:04,580 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 23:00:04,582 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 23:00:04,582 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 23:00:04,582 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 23:00:04,583 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-10 23:00:04,583 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-10 23:00:04,583 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-10 23:00:04,583 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-02-10 23:00:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-02-10 23:00:04,584 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-02-10 23:00:04,584 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 23:00:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 23:00:04,584 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 23:00:04,585 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 23:00:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 23:00:04,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 23:00:04,586 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-10 23:00:04,796 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 23:00:04,796 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 23:00:04,800 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:00:04 BoogieIcfgContainer [2020-02-10 23:00:04,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 23:00:04,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 23:00:04,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 23:00:04,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 23:00:04,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:00:04" (1/2) ... [2020-02-10 23:00:04,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7070e322 and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:00:04, skipping insertion in model container [2020-02-10 23:00:04,812 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 11:00:04" (2/2) ... [2020-02-10 23:00:04,817 INFO L109 eAbstractionObserver]: Analyzing ICFG example_5.bpl [2020-02-10 23:00:04,838 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 23:00:04,857 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 23:00:04,861 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 23:00:04,974 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-02-10 23:00:04,991 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 23:00:04,991 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-10 23:00:04,991 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 23:00:04,991 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-02-10 23:00:04,992 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 23:00:04,992 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 23:00:04,992 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 23:00:04,992 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 23:00:05,004 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions [2020-02-10 23:00:05,074 INFO L129 PetriNetUnfolder]: 49/98 cut-off events. [2020-02-10 23:00:05,075 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-02-10 23:00:05,090 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 23:00:05,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 48 transitions [2020-02-10 23:00:05,101 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 41 transitions [2020-02-10 23:00:05,106 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 41 transitions [2020-02-10 23:00:05,107 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 37 places, 41 transitions [2020-02-10 23:00:05,153 INFO L129 PetriNetUnfolder]: 49/96 cut-off events. [2020-02-10 23:00:05,153 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-02-10 23:00:05,156 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 23:00:05,160 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 37 places, 41 transitions [2020-02-10 23:00:05,205 INFO L129 PetriNetUnfolder]: 49/96 cut-off events. [2020-02-10 23:00:05,205 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-02-10 23:00:05,208 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 23:00:05,210 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 440 [2020-02-10 23:00:05,214 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-02-10 23:00:05,291 INFO L206 etLargeBlockEncoding]: Checked pairs total: 130 [2020-02-10 23:00:05,291 INFO L214 etLargeBlockEncoding]: Total number of compositions: 5 [2020-02-10 23:00:05,291 INFO L160 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 189 [2020-02-10 23:00:05,316 INFO L129 PetriNetUnfolder]: 49/90 cut-off events. [2020-02-10 23:00:05,317 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2020-02-10 23:00:05,317 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:05,318 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:05,319 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 23:00:05,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:05,325 INFO L82 PathProgramCache]: Analyzing trace with hash 51321556, now seen corresponding path program 1 times [2020-02-10 23:00:05,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:05,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897609145] [2020-02-10 23:00:05,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:05,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897609145] [2020-02-10 23:00:05,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:05,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:05,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095577827] [2020-02-10 23:00:05,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:05,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:05,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:05,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:05,503 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2020-02-10 23:00:05,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 36 transitions. Second operand 3 states. [2020-02-10 23:00:05,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:05,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2020-02-10 23:00:05,508 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:05,583 INFO L129 PetriNetUnfolder]: 33/70 cut-off events. [2020-02-10 23:00:05,583 INFO L130 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2020-02-10 23:00:05,585 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 23:00:05,592 INFO L145 encePairwiseOnDemand]: 50/53 looper letters, 3 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2020-02-10 23:00:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:05,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2020-02-10 23:00:05,618 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9245283018867925 [2020-02-10 23:00:05,619 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2020-02-10 23:00:05,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2020-02-10 23:00:05,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:05,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2020-02-10 23:00:05,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:05,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:05,647 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:05,649 INFO L178 Difference]: Start difference. First operand has 32 places, 36 transitions. Second operand 3 states and 147 transitions. [2020-02-10 23:00:05,653 INFO L206 Difference]: Finished difference. Result has 34 places, 34 transitions [2020-02-10 23:00:05,658 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 23:00:05,660 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 34 places, 34 transitions [2020-02-10 23:00:05,685 INFO L129 PetriNetUnfolder]: 33/70 cut-off events. [2020-02-10 23:00:05,686 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2020-02-10 23:00:05,687 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 23:00:05,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 34 transitions [2020-02-10 23:00:05,693 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 34 transitions [2020-02-10 23:00:05,694 INFO L479 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions [2020-02-10 23:00:05,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:05,706 INFO L129 PetriNetUnfolder]: 33/69 cut-off events. [2020-02-10 23:00:05,707 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2020-02-10 23:00:05,707 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:05,707 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:05,707 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 23:00:05,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:05,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1807199878, now seen corresponding path program 1 times [2020-02-10 23:00:05,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:05,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523121286] [2020-02-10 23:00:05,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:05,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523121286] [2020-02-10 23:00:05,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:05,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:05,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424287291] [2020-02-10 23:00:05,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:05,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:05,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:05,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:05,789 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2020-02-10 23:00:05,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions. Second operand 3 states. [2020-02-10 23:00:05,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:05,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2020-02-10 23:00:05,790 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:05,812 INFO L129 PetriNetUnfolder]: 8/31 cut-off events. [2020-02-10 23:00:05,812 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2020-02-10 23:00:05,813 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 23:00:05,816 INFO L145 encePairwiseOnDemand]: 48/53 looper letters, 1 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2020-02-10 23:00:05,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:05,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:05,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2020-02-10 23:00:05,820 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9245283018867925 [2020-02-10 23:00:05,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2020-02-10 23:00:05,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2020-02-10 23:00:05,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:05,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2020-02-10 23:00:05,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:05,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:05,824 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:05,824 INFO L178 Difference]: Start difference. First operand has 34 places, 34 transitions. Second operand 3 states and 147 transitions. [2020-02-10 23:00:05,827 INFO L206 Difference]: Finished difference. Result has 36 places, 26 transitions [2020-02-10 23:00:05,828 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 23:00:05,829 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 36 places, 26 transitions [2020-02-10 23:00:05,841 INFO L129 PetriNetUnfolder]: 8/31 cut-off events. [2020-02-10 23:00:05,842 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-02-10 23:00:05,842 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 23:00:05,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 26 transitions [2020-02-10 23:00:05,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 26 transitions [2020-02-10 23:00:05,844 INFO L479 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions [2020-02-10 23:00:05,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:05,851 INFO L129 PetriNetUnfolder]: 8/30 cut-off events. [2020-02-10 23:00:05,851 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-02-10 23:00:05,851 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:05,851 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:05,851 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 23:00:05,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:05,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1632527448, now seen corresponding path program 1 times [2020-02-10 23:00:05,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:05,852 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846168784] [2020-02-10 23:00:05,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:05,897 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846168784] [2020-02-10 23:00:05,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:05,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:00:05,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269249192] [2020-02-10 23:00:05,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:00:05,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:05,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:00:05,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:00:05,902 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 53 [2020-02-10 23:00:05,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions. Second operand 3 states. [2020-02-10 23:00:05,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:05,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 53 [2020-02-10 23:00:05,903 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:05,917 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2020-02-10 23:00:05,917 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2020-02-10 23:00:05,917 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 23:00:05,918 INFO L145 encePairwiseOnDemand]: 49/53 looper letters, 1 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2020-02-10 23:00:05,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:00:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:00:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2020-02-10 23:00:05,921 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9182389937106918 [2020-02-10 23:00:05,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2020-02-10 23:00:05,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2020-02-10 23:00:05,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:05,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2020-02-10 23:00:05,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:00:05,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:00:05,923 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:00:05,923 INFO L178 Difference]: Start difference. First operand has 36 places, 26 transitions. Second operand 3 states and 146 transitions. [2020-02-10 23:00:05,924 INFO L206 Difference]: Finished difference. Result has 38 places, 18 transitions [2020-02-10 23:00:05,924 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 23:00:05,924 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 38 places, 18 transitions [2020-02-10 23:00:05,928 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2020-02-10 23:00:05,928 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2020-02-10 23:00:05,928 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 23:00:05,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 18 transitions [2020-02-10 23:00:05,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 18 transitions [2020-02-10 23:00:05,929 INFO L479 AbstractCegarLoop]: Abstraction has has 38 places, 18 transitions [2020-02-10 23:00:05,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:00:05,933 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2020-02-10 23:00:05,933 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2020-02-10 23:00:05,933 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:05,933 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:05,933 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 23:00:05,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:05,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1749919668, now seen corresponding path program 1 times [2020-02-10 23:00:05,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:05,934 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550215063] [2020-02-10 23:00:05,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:06,208 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550215063] [2020-02-10 23:00:06,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:06,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:06,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792781273] [2020-02-10 23:00:06,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:06,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:06,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:06,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:06,212 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:06,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 18 transitions. Second operand 7 states. [2020-02-10 23:00:06,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:06,212 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:06,213 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:06,393 INFO L129 PetriNetUnfolder]: 62/167 cut-off events. [2020-02-10 23:00:06,393 INFO L130 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2020-02-10 23:00:06,395 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 23:00:06,397 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 14 selfloop transitions, 4 changer transitions 1/31 dead transitions. [2020-02-10 23:00:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:06,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:06,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:06,400 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:06,400 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:06,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:06,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:06,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:06,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:06,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:06,403 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:06,404 INFO L178 Difference]: Start difference. First operand has 38 places, 18 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:06,404 INFO L206 Difference]: Finished difference. Result has 49 places, 21 transitions [2020-02-10 23:00:06,405 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 23:00:06,405 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 21 transitions [2020-02-10 23:00:06,412 INFO L129 PetriNetUnfolder]: 4/48 cut-off events. [2020-02-10 23:00:06,412 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2020-02-10 23:00:06,413 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 23:00:06,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 21 transitions [2020-02-10 23:00:06,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 21 transitions [2020-02-10 23:00:06,414 INFO L479 AbstractCegarLoop]: Abstraction has has 48 places, 21 transitions [2020-02-10 23:00:06,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:06,421 INFO L129 PetriNetUnfolder]: 4/44 cut-off events. [2020-02-10 23:00:06,421 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2020-02-10 23:00:06,421 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:06,421 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:06,422 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 23:00:06,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:06,422 INFO L82 PathProgramCache]: Analyzing trace with hash -922308548, now seen corresponding path program 2 times [2020-02-10 23:00:06,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:06,423 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906642196] [2020-02-10 23:00:06,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:06,733 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 16 [2020-02-10 23:00:06,794 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 23:00:06,795 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906642196] [2020-02-10 23:00:06,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:06,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:06,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490974932] [2020-02-10 23:00:06,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:06,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:06,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:06,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:06,798 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:06,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 21 transitions. Second operand 7 states. [2020-02-10 23:00:06,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:06,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:06,799 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:06,898 INFO L129 PetriNetUnfolder]: 67/227 cut-off events. [2020-02-10 23:00:06,899 INFO L130 PetriNetUnfolder]: For 278/294 co-relation queries the response was YES. [2020-02-10 23:00:06,901 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 23:00:06,905 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 17 selfloop transitions, 8 changer transitions 0/37 dead transitions. [2020-02-10 23:00:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:06,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:06,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:06,907 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:06,907 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:06,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:06,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:06,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:06,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:06,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:06,910 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:06,910 INFO L178 Difference]: Start difference. First operand has 48 places, 21 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:06,910 INFO L206 Difference]: Finished difference. Result has 59 places, 27 transitions [2020-02-10 23:00:06,911 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 23:00:06,911 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 59 places, 27 transitions [2020-02-10 23:00:06,926 INFO L129 PetriNetUnfolder]: 9/99 cut-off events. [2020-02-10 23:00:06,927 INFO L130 PetriNetUnfolder]: For 146/151 co-relation queries the response was YES. [2020-02-10 23:00:06,928 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 23:00:06,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 27 transitions [2020-02-10 23:00:06,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 27 transitions [2020-02-10 23:00:06,930 INFO L479 AbstractCegarLoop]: Abstraction has has 59 places, 27 transitions [2020-02-10 23:00:06,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:06,945 INFO L129 PetriNetUnfolder]: 9/90 cut-off events. [2020-02-10 23:00:06,945 INFO L130 PetriNetUnfolder]: For 147/153 co-relation queries the response was YES. [2020-02-10 23:00:06,945 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:06,945 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:06,945 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 23:00:06,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:06,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1166928160, now seen corresponding path program 3 times [2020-02-10 23:00:06,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:06,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205893776] [2020-02-10 23:00:06,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:07,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205893776] [2020-02-10 23:00:07,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:07,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:07,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708993317] [2020-02-10 23:00:07,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:07,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:07,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:07,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:07,199 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:07,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 27 transitions. Second operand 7 states. [2020-02-10 23:00:07,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:07,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:07,200 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:07,341 INFO L129 PetriNetUnfolder]: 65/228 cut-off events. [2020-02-10 23:00:07,341 INFO L130 PetriNetUnfolder]: For 614/638 co-relation queries the response was YES. [2020-02-10 23:00:07,343 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 23:00:07,347 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 20 selfloop transitions, 7 changer transitions 1/40 dead transitions. [2020-02-10 23:00:07,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:07,349 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:07,350 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:07,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:07,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:07,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:07,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:07,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:07,352 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:07,352 INFO L178 Difference]: Start difference. First operand has 59 places, 27 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:07,353 INFO L206 Difference]: Finished difference. Result has 68 places, 28 transitions [2020-02-10 23:00:07,353 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 23:00:07,353 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 68 places, 28 transitions [2020-02-10 23:00:07,370 INFO L129 PetriNetUnfolder]: 11/113 cut-off events. [2020-02-10 23:00:07,370 INFO L130 PetriNetUnfolder]: For 228/234 co-relation queries the response was YES. [2020-02-10 23:00:07,372 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 23:00:07,372 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 28 transitions [2020-02-10 23:00:07,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 28 transitions [2020-02-10 23:00:07,374 INFO L479 AbstractCegarLoop]: Abstraction has has 67 places, 28 transitions [2020-02-10 23:00:07,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:07,390 INFO L129 PetriNetUnfolder]: 11/103 cut-off events. [2020-02-10 23:00:07,390 INFO L130 PetriNetUnfolder]: For 228/234 co-relation queries the response was YES. [2020-02-10 23:00:07,391 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:07,391 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:07,391 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 23:00:07,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:07,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1878276478, now seen corresponding path program 4 times [2020-02-10 23:00:07,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:07,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041037600] [2020-02-10 23:00:07,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:07,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041037600] [2020-02-10 23:00:07,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:07,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:07,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829702064] [2020-02-10 23:00:07,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:07,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:07,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:07,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:07,605 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:07,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 28 transitions. Second operand 7 states. [2020-02-10 23:00:07,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:07,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:07,606 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:07,767 INFO L129 PetriNetUnfolder]: 65/247 cut-off events. [2020-02-10 23:00:07,767 INFO L130 PetriNetUnfolder]: For 889/913 co-relation queries the response was YES. [2020-02-10 23:00:07,771 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 23:00:07,778 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 22 selfloop transitions, 7 changer transitions 1/42 dead transitions. [2020-02-10 23:00:07,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:07,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:07,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:07,780 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:07,781 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:07,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:07,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:07,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:07,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:07,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:07,786 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:07,786 INFO L178 Difference]: Start difference. First operand has 67 places, 28 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:07,788 INFO L206 Difference]: Finished difference. Result has 77 places, 30 transitions [2020-02-10 23:00:07,788 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 23:00:07,790 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 77 places, 30 transitions [2020-02-10 23:00:07,815 INFO L129 PetriNetUnfolder]: 14/138 cut-off events. [2020-02-10 23:00:07,815 INFO L130 PetriNetUnfolder]: For 415/425 co-relation queries the response was YES. [2020-02-10 23:00:07,817 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 23:00:07,818 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 30 transitions [2020-02-10 23:00:07,821 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 30 transitions [2020-02-10 23:00:07,822 INFO L479 AbstractCegarLoop]: Abstraction has has 76 places, 30 transitions [2020-02-10 23:00:07,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:07,851 INFO L129 PetriNetUnfolder]: 14/126 cut-off events. [2020-02-10 23:00:07,851 INFO L130 PetriNetUnfolder]: For 415/425 co-relation queries the response was YES. [2020-02-10 23:00:07,851 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:07,851 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:07,852 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 23:00:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:07,852 INFO L82 PathProgramCache]: Analyzing trace with hash 283512164, now seen corresponding path program 5 times [2020-02-10 23:00:07,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:07,854 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744090850] [2020-02-10 23:00:07,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:08,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744090850] [2020-02-10 23:00:08,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:08,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:08,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415045989] [2020-02-10 23:00:08,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:08,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:08,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:08,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:08,042 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:08,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 30 transitions. Second operand 7 states. [2020-02-10 23:00:08,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:08,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:08,043 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:08,201 INFO L129 PetriNetUnfolder]: 72/335 cut-off events. [2020-02-10 23:00:08,202 INFO L130 PetriNetUnfolder]: For 1578/1595 co-relation queries the response was YES. [2020-02-10 23:00:08,205 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 23:00:08,215 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 24 selfloop transitions, 11 changer transitions 1/48 dead transitions. [2020-02-10 23:00:08,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:08,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:08,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:08,218 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:08,218 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:08,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:08,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:08,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:08,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:08,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:08,222 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:08,223 INFO L178 Difference]: Start difference. First operand has 76 places, 30 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:08,224 INFO L206 Difference]: Finished difference. Result has 87 places, 37 transitions [2020-02-10 23:00:08,224 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 23:00:08,225 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 87 places, 37 transitions [2020-02-10 23:00:08,290 INFO L129 PetriNetUnfolder]: 22/223 cut-off events. [2020-02-10 23:00:08,290 INFO L130 PetriNetUnfolder]: For 1066/1071 co-relation queries the response was YES. [2020-02-10 23:00:08,293 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 23:00:08,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 37 transitions [2020-02-10 23:00:08,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 37 transitions [2020-02-10 23:00:08,300 INFO L479 AbstractCegarLoop]: Abstraction has has 87 places, 37 transitions [2020-02-10 23:00:08,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:08,383 INFO L129 PetriNetUnfolder]: 22/203 cut-off events. [2020-02-10 23:00:08,384 INFO L130 PetriNetUnfolder]: For 1086/1090 co-relation queries the response was YES. [2020-02-10 23:00:08,384 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:08,384 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:08,384 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 23:00:08,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:08,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1746237412, now seen corresponding path program 6 times [2020-02-10 23:00:08,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:08,390 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641672263] [2020-02-10 23:00:08,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:08,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:08,638 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641672263] [2020-02-10 23:00:08,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:08,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:08,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819381074] [2020-02-10 23:00:08,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:08,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:08,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:08,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:08,641 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:08,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 37 transitions. Second operand 7 states. [2020-02-10 23:00:08,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:08,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:08,643 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:08,849 INFO L129 PetriNetUnfolder]: 74/366 cut-off events. [2020-02-10 23:00:08,849 INFO L130 PetriNetUnfolder]: For 2592/2638 co-relation queries the response was YES. [2020-02-10 23:00:08,854 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 23:00:08,861 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 28 selfloop transitions, 9 changer transitions 2/51 dead transitions. [2020-02-10 23:00:08,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:08,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:08,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:08,864 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:08,864 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:08,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:08,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:08,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:08,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:08,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:08,867 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:08,867 INFO L178 Difference]: Start difference. First operand has 87 places, 37 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:08,869 INFO L206 Difference]: Finished difference. Result has 97 places, 40 transitions [2020-02-10 23:00:08,870 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 23:00:08,870 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 97 places, 40 transitions [2020-02-10 23:00:08,922 INFO L129 PetriNetUnfolder]: 25/248 cut-off events. [2020-02-10 23:00:08,923 INFO L130 PetriNetUnfolder]: For 1627/1631 co-relation queries the response was YES. [2020-02-10 23:00:08,925 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 23:00:08,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 40 transitions [2020-02-10 23:00:08,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 40 transitions [2020-02-10 23:00:08,931 INFO L479 AbstractCegarLoop]: Abstraction has has 96 places, 40 transitions [2020-02-10 23:00:08,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:08,971 INFO L129 PetriNetUnfolder]: 25/226 cut-off events. [2020-02-10 23:00:08,971 INFO L130 PetriNetUnfolder]: For 1627/1631 co-relation queries the response was YES. [2020-02-10 23:00:08,972 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:08,972 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:08,972 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 23:00:08,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:08,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1693423230, now seen corresponding path program 7 times [2020-02-10 23:00:08,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:08,973 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195505847] [2020-02-10 23:00:08,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:09,184 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195505847] [2020-02-10 23:00:09,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:09,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:09,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223851567] [2020-02-10 23:00:09,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:09,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:09,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:09,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:09,186 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:09,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 40 transitions. Second operand 7 states. [2020-02-10 23:00:09,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:09,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:09,187 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:09,356 INFO L129 PetriNetUnfolder]: 73/373 cut-off events. [2020-02-10 23:00:09,356 INFO L130 PetriNetUnfolder]: For 3264/3316 co-relation queries the response was YES. [2020-02-10 23:00:09,361 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 23:00:09,370 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 27 selfloop transitions, 10 changer transitions 2/51 dead transitions. [2020-02-10 23:00:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:09,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:09,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:09,373 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:09,373 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:09,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:09,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:09,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:09,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:09,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:09,375 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:09,375 INFO L178 Difference]: Start difference. First operand has 96 places, 40 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:09,376 INFO L206 Difference]: Finished difference. Result has 105 places, 41 transitions [2020-02-10 23:00:09,376 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 23:00:09,377 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 105 places, 41 transitions [2020-02-10 23:00:09,424 INFO L129 PetriNetUnfolder]: 26/260 cut-off events. [2020-02-10 23:00:09,424 INFO L130 PetriNetUnfolder]: For 2076/2078 co-relation queries the response was YES. [2020-02-10 23:00:09,427 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 23:00:09,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 41 transitions [2020-02-10 23:00:09,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 41 transitions [2020-02-10 23:00:09,433 INFO L479 AbstractCegarLoop]: Abstraction has has 104 places, 41 transitions [2020-02-10 23:00:09,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:09,474 INFO L129 PetriNetUnfolder]: 26/237 cut-off events. [2020-02-10 23:00:09,475 INFO L130 PetriNetUnfolder]: For 2076/2078 co-relation queries the response was YES. [2020-02-10 23:00:09,475 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:09,475 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:09,475 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 23:00:09,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:09,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1155567652, now seen corresponding path program 8 times [2020-02-10 23:00:09,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:09,476 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954938752] [2020-02-10 23:00:09,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:09,638 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954938752] [2020-02-10 23:00:09,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:09,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:09,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166345719] [2020-02-10 23:00:09,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:09,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:09,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:09,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:09,640 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:09,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 41 transitions. Second operand 7 states. [2020-02-10 23:00:09,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:09,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:09,641 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:09,868 INFO L129 PetriNetUnfolder]: 71/376 cut-off events. [2020-02-10 23:00:09,869 INFO L130 PetriNetUnfolder]: For 3986/4044 co-relation queries the response was YES. [2020-02-10 23:00:09,874 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 23:00:09,884 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 25 selfloop transitions, 15 changer transitions 1/53 dead transitions. [2020-02-10 23:00:09,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:09,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:09,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:09,886 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:09,886 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:09,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:09,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:09,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:09,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:09,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:09,889 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:09,889 INFO L178 Difference]: Start difference. First operand has 104 places, 41 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:09,892 INFO L206 Difference]: Finished difference. Result has 114 places, 45 transitions [2020-02-10 23:00:09,892 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 23:00:09,892 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 114 places, 45 transitions [2020-02-10 23:00:09,945 INFO L129 PetriNetUnfolder]: 27/274 cut-off events. [2020-02-10 23:00:09,945 INFO L130 PetriNetUnfolder]: For 2792/2792 co-relation queries the response was YES. [2020-02-10 23:00:09,949 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 23:00:09,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 45 transitions [2020-02-10 23:00:09,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 45 transitions [2020-02-10 23:00:09,955 INFO L479 AbstractCegarLoop]: Abstraction has has 114 places, 45 transitions [2020-02-10 23:00:09,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:10,000 INFO L129 PetriNetUnfolder]: 27/250 cut-off events. [2020-02-10 23:00:10,000 INFO L130 PetriNetUnfolder]: For 2792/2792 co-relation queries the response was YES. [2020-02-10 23:00:10,000 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:10,001 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:10,001 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 23:00:10,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:10,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1409714770, now seen corresponding path program 9 times [2020-02-10 23:00:10,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:10,002 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548464685] [2020-02-10 23:00:10,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:10,167 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 23:00:10,168 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548464685] [2020-02-10 23:00:10,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:10,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:10,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625470167] [2020-02-10 23:00:10,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:10,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:10,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:10,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:10,170 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:10,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 45 transitions. Second operand 7 states. [2020-02-10 23:00:10,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:10,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:10,171 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:10,416 INFO L129 PetriNetUnfolder]: 78/433 cut-off events. [2020-02-10 23:00:10,416 INFO L130 PetriNetUnfolder]: For 5771/5859 co-relation queries the response was YES. [2020-02-10 23:00:10,423 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 23:00:10,435 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 37 selfloop transitions, 16 changer transitions 1/66 dead transitions. [2020-02-10 23:00:10,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:10,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:10,437 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:10,437 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:10,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:10,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:10,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:10,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:10,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:10,440 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:10,440 INFO L178 Difference]: Start difference. First operand has 114 places, 45 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:10,441 INFO L206 Difference]: Finished difference. Result has 125 places, 50 transitions [2020-02-10 23:00:10,442 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 23:00:10,442 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 125 places, 50 transitions [2020-02-10 23:00:10,515 INFO L129 PetriNetUnfolder]: 31/318 cut-off events. [2020-02-10 23:00:10,515 INFO L130 PetriNetUnfolder]: For 4113/4114 co-relation queries the response was YES. [2020-02-10 23:00:10,519 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 23:00:10,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 50 transitions [2020-02-10 23:00:10,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 50 transitions [2020-02-10 23:00:10,527 INFO L479 AbstractCegarLoop]: Abstraction has has 125 places, 50 transitions [2020-02-10 23:00:10,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:10,585 INFO L129 PetriNetUnfolder]: 31/290 cut-off events. [2020-02-10 23:00:10,585 INFO L130 PetriNetUnfolder]: For 4117/4123 co-relation queries the response was YES. [2020-02-10 23:00:10,586 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:10,586 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:10,586 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 23:00:10,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:10,586 INFO L82 PathProgramCache]: Analyzing trace with hash -519590378, now seen corresponding path program 10 times [2020-02-10 23:00:10,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:10,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264832547] [2020-02-10 23:00:10,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:10,747 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 23:00:10,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264832547] [2020-02-10 23:00:10,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:10,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:10,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067115247] [2020-02-10 23:00:10,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:10,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:10,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:10,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:10,750 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:10,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 50 transitions. Second operand 7 states. [2020-02-10 23:00:10,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:10,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:10,751 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:11,036 INFO L129 PetriNetUnfolder]: 78/432 cut-off events. [2020-02-10 23:00:11,036 INFO L130 PetriNetUnfolder]: For 6807/6875 co-relation queries the response was YES. [2020-02-10 23:00:11,044 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 23:00:11,057 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 26 selfloop transitions, 20 changer transitions 1/59 dead transitions. [2020-02-10 23:00:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:11,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:11,059 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:11,059 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:11,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:11,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:11,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:11,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:11,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:11,062 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:11,062 INFO L178 Difference]: Start difference. First operand has 125 places, 50 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:11,063 INFO L206 Difference]: Finished difference. Result has 133 places, 51 transitions [2020-02-10 23:00:11,063 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 23:00:11,064 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 133 places, 51 transitions [2020-02-10 23:00:11,162 INFO L129 PetriNetUnfolder]: 31/317 cut-off events. [2020-02-10 23:00:11,163 INFO L130 PetriNetUnfolder]: For 4738/4744 co-relation queries the response was YES. [2020-02-10 23:00:11,167 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 23:00:11,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 51 transitions [2020-02-10 23:00:11,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 51 transitions [2020-02-10 23:00:11,176 INFO L479 AbstractCegarLoop]: Abstraction has has 133 places, 51 transitions [2020-02-10 23:00:11,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:11,242 INFO L129 PetriNetUnfolder]: 31/290 cut-off events. [2020-02-10 23:00:11,242 INFO L130 PetriNetUnfolder]: For 5346/5400 co-relation queries the response was YES. [2020-02-10 23:00:11,242 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:11,242 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:11,243 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 23:00:11,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:11,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1911630658, now seen corresponding path program 11 times [2020-02-10 23:00:11,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:11,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736504647] [2020-02-10 23:00:11,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:11,403 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736504647] [2020-02-10 23:00:11,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:11,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:11,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873318666] [2020-02-10 23:00:11,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:11,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:11,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:11,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:11,406 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:11,406 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 51 transitions. Second operand 7 states. [2020-02-10 23:00:11,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:11,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:11,407 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:11,670 INFO L129 PetriNetUnfolder]: 77/463 cut-off events. [2020-02-10 23:00:11,670 INFO L130 PetriNetUnfolder]: For 8277/8370 co-relation queries the response was YES. [2020-02-10 23:00:11,676 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 23:00:11,688 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 32 selfloop transitions, 23 changer transitions 0/67 dead transitions. [2020-02-10 23:00:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:11,690 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:11,690 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:11,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:11,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:11,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:11,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:11,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:11,693 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:11,693 INFO L178 Difference]: Start difference. First operand has 133 places, 51 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:11,694 INFO L206 Difference]: Finished difference. Result has 143 places, 57 transitions [2020-02-10 23:00:11,694 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 23:00:11,695 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 143 places, 57 transitions [2020-02-10 23:00:11,778 INFO L129 PetriNetUnfolder]: 36/367 cut-off events. [2020-02-10 23:00:11,778 INFO L130 PetriNetUnfolder]: For 7130/7194 co-relation queries the response was YES. [2020-02-10 23:00:11,782 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 23:00:11,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 57 transitions [2020-02-10 23:00:11,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 57 transitions [2020-02-10 23:00:11,790 INFO L479 AbstractCegarLoop]: Abstraction has has 143 places, 57 transitions [2020-02-10 23:00:11,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:11,855 INFO L129 PetriNetUnfolder]: 36/336 cut-off events. [2020-02-10 23:00:11,855 INFO L130 PetriNetUnfolder]: For 7139/7207 co-relation queries the response was YES. [2020-02-10 23:00:11,855 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:11,855 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:11,856 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 23:00:11,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:11,856 INFO L82 PathProgramCache]: Analyzing trace with hash -330089334, now seen corresponding path program 12 times [2020-02-10 23:00:11,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:11,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030599787] [2020-02-10 23:00:11,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:12,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030599787] [2020-02-10 23:00:12,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:12,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:12,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136260674] [2020-02-10 23:00:12,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:12,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:12,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:12,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:12,022 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:12,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 57 transitions. Second operand 7 states. [2020-02-10 23:00:12,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:12,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:12,022 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:12,543 INFO L129 PetriNetUnfolder]: 76/562 cut-off events. [2020-02-10 23:00:12,543 INFO L130 PetriNetUnfolder]: For 12327/12405 co-relation queries the response was YES. [2020-02-10 23:00:12,556 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 23:00:12,589 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 61 selfloop transitions, 28 changer transitions 1/102 dead transitions. [2020-02-10 23:00:12,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:12,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:12,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:12,592 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:12,592 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:12,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:12,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:12,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:12,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:12,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:12,594 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:12,595 INFO L178 Difference]: Start difference. First operand has 143 places, 57 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:12,596 INFO L206 Difference]: Finished difference. Result has 154 places, 72 transitions [2020-02-10 23:00:12,596 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 23:00:12,597 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 154 places, 72 transitions [2020-02-10 23:00:12,917 INFO L129 PetriNetUnfolder]: 48/505 cut-off events. [2020-02-10 23:00:12,918 INFO L130 PetriNetUnfolder]: For 12113/12215 co-relation queries the response was YES. [2020-02-10 23:00:12,929 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 23:00:12,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 72 transitions [2020-02-10 23:00:12,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 72 transitions [2020-02-10 23:00:12,951 INFO L479 AbstractCegarLoop]: Abstraction has has 154 places, 72 transitions [2020-02-10 23:00:12,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:13,122 INFO L129 PetriNetUnfolder]: 48/460 cut-off events. [2020-02-10 23:00:13,123 INFO L130 PetriNetUnfolder]: For 12113/12215 co-relation queries the response was YES. [2020-02-10 23:00:13,123 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:13,123 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:13,123 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 23:00:13,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:13,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1564863456, now seen corresponding path program 13 times [2020-02-10 23:00:13,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:13,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440115792] [2020-02-10 23:00:13,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:13,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440115792] [2020-02-10 23:00:13,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:13,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:13,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900517006] [2020-02-10 23:00:13,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:13,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:13,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:13,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:13,306 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:13,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 72 transitions. Second operand 7 states. [2020-02-10 23:00:13,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:13,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:13,307 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:13,769 INFO L129 PetriNetUnfolder]: 76/561 cut-off events. [2020-02-10 23:00:13,769 INFO L130 PetriNetUnfolder]: For 14376/14448 co-relation queries the response was YES. [2020-02-10 23:00:13,783 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 23:00:13,806 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 62 selfloop transitions, 24 changer transitions 4/102 dead transitions. [2020-02-10 23:00:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:13,809 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:13,809 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:13,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:13,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:13,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:13,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:13,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:13,812 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:13,813 INFO L178 Difference]: Start difference. First operand has 154 places, 72 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:13,815 INFO L206 Difference]: Finished difference. Result has 162 places, 70 transitions [2020-02-10 23:00:13,815 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 23:00:13,816 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 162 places, 70 transitions [2020-02-10 23:00:14,051 INFO L129 PetriNetUnfolder]: 46/489 cut-off events. [2020-02-10 23:00:14,052 INFO L130 PetriNetUnfolder]: For 13036/13138 co-relation queries the response was YES. [2020-02-10 23:00:14,063 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 23:00:14,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 70 transitions [2020-02-10 23:00:14,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 70 transitions [2020-02-10 23:00:14,080 INFO L479 AbstractCegarLoop]: Abstraction has has 160 places, 70 transitions [2020-02-10 23:00:14,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:14,254 INFO L129 PetriNetUnfolder]: 46/445 cut-off events. [2020-02-10 23:00:14,254 INFO L130 PetriNetUnfolder]: For 13088/13191 co-relation queries the response was YES. [2020-02-10 23:00:14,255 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:14,255 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:14,255 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 23:00:14,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:14,256 INFO L82 PathProgramCache]: Analyzing trace with hash -2054953756, now seen corresponding path program 14 times [2020-02-10 23:00:14,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:14,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304759038] [2020-02-10 23:00:14,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:14,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304759038] [2020-02-10 23:00:14,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:14,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:14,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61740335] [2020-02-10 23:00:14,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:14,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:14,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:14,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:14,408 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:14,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 70 transitions. Second operand 7 states. [2020-02-10 23:00:14,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:14,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:14,409 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:14,945 INFO L129 PetriNetUnfolder]: 86/661 cut-off events. [2020-02-10 23:00:14,945 INFO L130 PetriNetUnfolder]: For 17596/17668 co-relation queries the response was YES. [2020-02-10 23:00:14,957 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 23:00:14,976 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 41 selfloop transitions, 35 changer transitions 0/88 dead transitions. [2020-02-10 23:00:14,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:14,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:14,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:14,977 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:14,978 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:14,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:14,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:14,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:14,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:14,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:14,980 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:14,980 INFO L178 Difference]: Start difference. First operand has 160 places, 70 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:14,982 INFO L206 Difference]: Finished difference. Result has 171 places, 77 transitions [2020-02-10 23:00:14,982 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 23:00:14,982 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 171 places, 77 transitions [2020-02-10 23:00:15,219 INFO L129 PetriNetUnfolder]: 54/577 cut-off events. [2020-02-10 23:00:15,219 INFO L130 PetriNetUnfolder]: For 17945/18088 co-relation queries the response was YES. [2020-02-10 23:00:15,228 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 23:00:15,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 77 transitions [2020-02-10 23:00:15,242 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 77 transitions [2020-02-10 23:00:15,242 INFO L479 AbstractCegarLoop]: Abstraction has has 171 places, 77 transitions [2020-02-10 23:00:15,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:15,376 INFO L129 PetriNetUnfolder]: 54/525 cut-off events. [2020-02-10 23:00:15,376 INFO L130 PetriNetUnfolder]: For 17945/18088 co-relation queries the response was YES. [2020-02-10 23:00:15,376 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:15,377 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:15,377 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 23:00:15,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:15,377 INFO L82 PathProgramCache]: Analyzing trace with hash -400291626, now seen corresponding path program 15 times [2020-02-10 23:00:15,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:15,377 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138974771] [2020-02-10 23:00:15,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:15,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138974771] [2020-02-10 23:00:15,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:15,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:15,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123117048] [2020-02-10 23:00:15,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:15,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:15,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:15,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:15,533 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:15,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 77 transitions. Second operand 7 states. [2020-02-10 23:00:15,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:15,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:15,534 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:16,066 INFO L129 PetriNetUnfolder]: 85/710 cut-off events. [2020-02-10 23:00:16,066 INFO L130 PetriNetUnfolder]: For 22749/22827 co-relation queries the response was YES. [2020-02-10 23:00:16,074 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 23:00:16,094 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 68 selfloop transitions, 36 changer transitions 1/117 dead transitions. [2020-02-10 23:00:16,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:16,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:16,096 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:16,096 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:16,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:16,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:16,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:16,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:16,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:16,099 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:16,099 INFO L178 Difference]: Start difference. First operand has 171 places, 77 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:16,101 INFO L206 Difference]: Finished difference. Result has 182 places, 91 transitions [2020-02-10 23:00:16,101 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 23:00:16,101 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 182 places, 91 transitions [2020-02-10 23:00:16,403 INFO L129 PetriNetUnfolder]: 61/657 cut-off events. [2020-02-10 23:00:16,403 INFO L130 PetriNetUnfolder]: For 23648/23825 co-relation queries the response was YES. [2020-02-10 23:00:16,415 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 23:00:16,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 91 transitions [2020-02-10 23:00:16,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 91 transitions [2020-02-10 23:00:16,434 INFO L479 AbstractCegarLoop]: Abstraction has has 182 places, 91 transitions [2020-02-10 23:00:16,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:16,580 INFO L129 PetriNetUnfolder]: 61/597 cut-off events. [2020-02-10 23:00:16,580 INFO L130 PetriNetUnfolder]: For 23395/23559 co-relation queries the response was YES. [2020-02-10 23:00:16,580 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:16,580 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:16,580 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 23:00:16,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:16,580 INFO L82 PathProgramCache]: Analyzing trace with hash -794259292, now seen corresponding path program 16 times [2020-02-10 23:00:16,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:16,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248110866] [2020-02-10 23:00:16,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:16,765 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248110866] [2020-02-10 23:00:16,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:16,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:16,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81305805] [2020-02-10 23:00:16,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:16,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:16,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:16,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:16,767 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:16,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 91 transitions. Second operand 7 states. [2020-02-10 23:00:16,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:16,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:16,790 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:17,297 INFO L129 PetriNetUnfolder]: 84/778 cut-off events. [2020-02-10 23:00:17,297 INFO L130 PetriNetUnfolder]: For 27677/27801 co-relation queries the response was YES. [2020-02-10 23:00:17,306 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 23:00:17,330 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 67 selfloop transitions, 35 changer transitions 2/116 dead transitions. [2020-02-10 23:00:17,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:17,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:17,332 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:17,332 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:17,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:17,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:17,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:17,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:17,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:17,334 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:17,334 INFO L178 Difference]: Start difference. First operand has 182 places, 91 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:17,336 INFO L206 Difference]: Finished difference. Result has 193 places, 98 transitions [2020-02-10 23:00:17,337 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 23:00:17,337 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 193 places, 98 transitions [2020-02-10 23:00:17,665 INFO L129 PetriNetUnfolder]: 66/727 cut-off events. [2020-02-10 23:00:17,665 INFO L130 PetriNetUnfolder]: For 29572/29744 co-relation queries the response was YES. [2020-02-10 23:00:17,673 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 23:00:17,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 98 transitions [2020-02-10 23:00:17,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 98 transitions [2020-02-10 23:00:17,687 INFO L479 AbstractCegarLoop]: Abstraction has has 192 places, 98 transitions [2020-02-10 23:00:17,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:17,835 INFO L129 PetriNetUnfolder]: 66/659 cut-off events. [2020-02-10 23:00:17,836 INFO L130 PetriNetUnfolder]: For 28555/28625 co-relation queries the response was YES. [2020-02-10 23:00:17,836 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:17,836 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:17,836 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 23:00:17,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:17,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1922503392, now seen corresponding path program 17 times [2020-02-10 23:00:17,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:17,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108115900] [2020-02-10 23:00:17,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:17,984 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108115900] [2020-02-10 23:00:17,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:17,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:17,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231122220] [2020-02-10 23:00:17,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:17,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:17,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:17,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:17,985 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:17,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 98 transitions. Second operand 7 states. [2020-02-10 23:00:17,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:17,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:17,986 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:18,467 INFO L129 PetriNetUnfolder]: 84/773 cut-off events. [2020-02-10 23:00:18,468 INFO L130 PetriNetUnfolder]: For 31046/31114 co-relation queries the response was YES. [2020-02-10 23:00:18,478 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 23:00:18,493 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 68 selfloop transitions, 33 changer transitions 2/115 dead transitions. [2020-02-10 23:00:18,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:18,495 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:18,495 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:18,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:18,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:18,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:18,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:18,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:18,498 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:18,498 INFO L178 Difference]: Start difference. First operand has 192 places, 98 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:18,499 INFO L206 Difference]: Finished difference. Result has 199 places, 96 transitions [2020-02-10 23:00:18,500 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 23:00:18,500 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 199 places, 96 transitions [2020-02-10 23:00:18,754 INFO L129 PetriNetUnfolder]: 65/716 cut-off events. [2020-02-10 23:00:18,754 INFO L130 PetriNetUnfolder]: For 31317/31522 co-relation queries the response was YES. [2020-02-10 23:00:18,763 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 23:00:18,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 96 transitions [2020-02-10 23:00:18,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 96 transitions [2020-02-10 23:00:18,777 INFO L479 AbstractCegarLoop]: Abstraction has has 197 places, 96 transitions [2020-02-10 23:00:18,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:18,984 INFO L129 PetriNetUnfolder]: 65/649 cut-off events. [2020-02-10 23:00:18,984 INFO L130 PetriNetUnfolder]: For 31317/31522 co-relation queries the response was YES. [2020-02-10 23:00:18,984 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:18,984 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:18,984 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 23:00:18,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:18,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1013760902, now seen corresponding path program 18 times [2020-02-10 23:00:18,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:18,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932864488] [2020-02-10 23:00:18,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:19,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:19,137 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932864488] [2020-02-10 23:00:19,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:19,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:19,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708056344] [2020-02-10 23:00:19,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:19,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:19,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:19,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:19,140 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:19,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 96 transitions. Second operand 7 states. [2020-02-10 23:00:19,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:19,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:19,140 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:19,720 INFO L129 PetriNetUnfolder]: 80/751 cut-off events. [2020-02-10 23:00:19,720 INFO L130 PetriNetUnfolder]: For 32863/32953 co-relation queries the response was YES. [2020-02-10 23:00:19,730 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 23:00:19,747 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 41 changer transitions 1/129 dead transitions. [2020-02-10 23:00:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:19,748 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:19,748 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:19,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:19,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:19,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:19,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:19,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:19,750 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:19,750 INFO L178 Difference]: Start difference. First operand has 197 places, 96 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:19,752 INFO L206 Difference]: Finished difference. Result has 208 places, 104 transitions [2020-02-10 23:00:19,753 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 23:00:19,753 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 208 places, 104 transitions [2020-02-10 23:00:20,030 INFO L129 PetriNetUnfolder]: 65/714 cut-off events. [2020-02-10 23:00:20,031 INFO L130 PetriNetUnfolder]: For 34315/34511 co-relation queries the response was YES. [2020-02-10 23:00:20,040 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 23:00:20,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 104 transitions [2020-02-10 23:00:20,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 104 transitions [2020-02-10 23:00:20,055 INFO L479 AbstractCegarLoop]: Abstraction has has 208 places, 104 transitions [2020-02-10 23:00:20,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:20,213 INFO L129 PetriNetUnfolder]: 65/648 cut-off events. [2020-02-10 23:00:20,213 INFO L130 PetriNetUnfolder]: For 33121/33170 co-relation queries the response was YES. [2020-02-10 23:00:20,213 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:20,214 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:20,214 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 23:00:20,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:20,214 INFO L82 PathProgramCache]: Analyzing trace with hash 757726374, now seen corresponding path program 19 times [2020-02-10 23:00:20,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:20,215 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818582828] [2020-02-10 23:00:20,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:20,402 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818582828] [2020-02-10 23:00:20,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:20,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:20,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729927067] [2020-02-10 23:00:20,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:20,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:20,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:20,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:20,404 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:20,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 104 transitions. Second operand 7 states. [2020-02-10 23:00:20,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:20,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:20,404 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:21,126 INFO L129 PetriNetUnfolder]: 86/847 cut-off events. [2020-02-10 23:00:21,127 INFO L130 PetriNetUnfolder]: For 41721/41819 co-relation queries the response was YES. [2020-02-10 23:00:21,138 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 23:00:21,157 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 87 selfloop transitions, 44 changer transitions 1/144 dead transitions. [2020-02-10 23:00:21,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:21,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:21,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:21,159 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:21,159 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:21,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:21,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:21,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:21,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:21,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:21,161 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:21,161 INFO L178 Difference]: Start difference. First operand has 208 places, 104 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:21,163 INFO L206 Difference]: Finished difference. Result has 219 places, 119 transitions [2020-02-10 23:00:21,164 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 23:00:21,164 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 219 places, 119 transitions [2020-02-10 23:00:21,484 INFO L129 PetriNetUnfolder]: 75/823 cut-off events. [2020-02-10 23:00:21,485 INFO L130 PetriNetUnfolder]: For 43030/43067 co-relation queries the response was YES. [2020-02-10 23:00:21,502 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 23:00:21,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 119 transitions [2020-02-10 23:00:21,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 119 transitions [2020-02-10 23:00:21,528 INFO L479 AbstractCegarLoop]: Abstraction has has 219 places, 119 transitions [2020-02-10 23:00:21,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:21,754 INFO L129 PetriNetUnfolder]: 75/747 cut-off events. [2020-02-10 23:00:21,755 INFO L130 PetriNetUnfolder]: For 42989/43030 co-relation queries the response was YES. [2020-02-10 23:00:21,755 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:21,755 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:21,755 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 23:00:21,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:21,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1474304834, now seen corresponding path program 20 times [2020-02-10 23:00:21,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:21,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565723299] [2020-02-10 23:00:21,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:21,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565723299] [2020-02-10 23:00:21,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:21,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:21,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713784930] [2020-02-10 23:00:21,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:21,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:21,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:21,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:21,919 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:21,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 119 transitions. Second operand 7 states. [2020-02-10 23:00:21,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:21,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:21,920 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:22,793 INFO L129 PetriNetUnfolder]: 92/994 cut-off events. [2020-02-10 23:00:22,793 INFO L130 PetriNetUnfolder]: For 54159/54257 co-relation queries the response was YES. [2020-02-10 23:00:22,807 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 23:00:22,833 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 91 selfloop transitions, 59 changer transitions 1/163 dead transitions. [2020-02-10 23:00:22,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:22,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:22,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:22,835 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:22,835 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:22,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:22,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:22,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:22,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:22,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:22,837 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:22,837 INFO L178 Difference]: Start difference. First operand has 219 places, 119 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:22,840 INFO L206 Difference]: Finished difference. Result has 230 places, 142 transitions [2020-02-10 23:00:22,840 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 23:00:22,840 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 230 places, 142 transitions [2020-02-10 23:00:23,361 INFO L129 PetriNetUnfolder]: 89/983 cut-off events. [2020-02-10 23:00:23,361 INFO L130 PetriNetUnfolder]: For 56962/56981 co-relation queries the response was YES. [2020-02-10 23:00:23,377 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 23:00:23,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 142 transitions [2020-02-10 23:00:23,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 142 transitions [2020-02-10 23:00:23,400 INFO L479 AbstractCegarLoop]: Abstraction has has 230 places, 142 transitions [2020-02-10 23:00:23,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:23,722 INFO L129 PetriNetUnfolder]: 89/891 cut-off events. [2020-02-10 23:00:23,722 INFO L130 PetriNetUnfolder]: For 56912/56921 co-relation queries the response was YES. [2020-02-10 23:00:23,722 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:23,723 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:23,723 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 23:00:23,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:23,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1340903844, now seen corresponding path program 21 times [2020-02-10 23:00:23,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:23,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306888166] [2020-02-10 23:00:23,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:23,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:23,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306888166] [2020-02-10 23:00:23,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:23,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:23,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659211173] [2020-02-10 23:00:23,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:23,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:23,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:23,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:23,895 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:23,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 142 transitions. Second operand 7 states. [2020-02-10 23:00:23,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:23,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:23,896 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:24,846 INFO L129 PetriNetUnfolder]: 91/988 cut-off events. [2020-02-10 23:00:24,846 INFO L130 PetriNetUnfolder]: For 59490/59594 co-relation queries the response was YES. [2020-02-10 23:00:24,860 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 23:00:24,883 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 99 selfloop transitions, 44 changer transitions 2/157 dead transitions. [2020-02-10 23:00:24,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:24,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:24,884 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:24,884 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:24,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:24,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:24,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:24,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:24,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:24,886 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:24,886 INFO L178 Difference]: Start difference. First operand has 230 places, 142 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:24,889 INFO L206 Difference]: Finished difference. Result has 238 places, 143 transitions [2020-02-10 23:00:24,889 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 23:00:24,889 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 238 places, 143 transitions [2020-02-10 23:00:25,456 INFO L129 PetriNetUnfolder]: 88/973 cut-off events. [2020-02-10 23:00:25,457 INFO L130 PetriNetUnfolder]: For 60337/60346 co-relation queries the response was YES. [2020-02-10 23:00:25,472 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 23:00:25,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 143 transitions [2020-02-10 23:00:25,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 143 transitions [2020-02-10 23:00:25,496 INFO L479 AbstractCegarLoop]: Abstraction has has 236 places, 143 transitions [2020-02-10 23:00:25,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:25,869 INFO L129 PetriNetUnfolder]: 88/882 cut-off events. [2020-02-10 23:00:25,869 INFO L130 PetriNetUnfolder]: For 60337/60346 co-relation queries the response was YES. [2020-02-10 23:00:25,869 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:25,869 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:25,869 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 23:00:25,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:25,870 INFO L82 PathProgramCache]: Analyzing trace with hash -375332914, now seen corresponding path program 22 times [2020-02-10 23:00:25,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:25,870 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010721573] [2020-02-10 23:00:25,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:26,016 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010721573] [2020-02-10 23:00:26,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:26,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:26,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823364130] [2020-02-10 23:00:26,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:26,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:26,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:26,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:26,017 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:26,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 143 transitions. Second operand 7 states. [2020-02-10 23:00:26,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:26,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:26,018 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:27,028 INFO L129 PetriNetUnfolder]: 90/978 cut-off events. [2020-02-10 23:00:27,029 INFO L130 PetriNetUnfolder]: For 63313/63483 co-relation queries the response was YES. [2020-02-10 23:00:27,045 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 23:00:27,074 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 90 selfloop transitions, 59 changer transitions 0/161 dead transitions. [2020-02-10 23:00:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:27,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:27,197 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:27,197 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:27,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:27,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:27,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:27,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:27,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:27,199 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:27,199 INFO L178 Difference]: Start difference. First operand has 236 places, 143 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:27,202 INFO L206 Difference]: Finished difference. Result has 246 places, 154 transitions [2020-02-10 23:00:27,202 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 23:00:27,202 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 246 places, 154 transitions [2020-02-10 23:00:27,777 INFO L129 PetriNetUnfolder]: 88/972 cut-off events. [2020-02-10 23:00:27,777 INFO L130 PetriNetUnfolder]: For 66195/66207 co-relation queries the response was YES. [2020-02-10 23:00:27,794 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 23:00:27,794 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 154 transitions [2020-02-10 23:00:27,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 154 transitions [2020-02-10 23:00:27,819 INFO L479 AbstractCegarLoop]: Abstraction has has 246 places, 154 transitions [2020-02-10 23:00:27,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:28,127 INFO L129 PetriNetUnfolder]: 88/882 cut-off events. [2020-02-10 23:00:28,127 INFO L130 PetriNetUnfolder]: For 66810/66882 co-relation queries the response was YES. [2020-02-10 23:00:28,127 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:28,127 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:28,127 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 23:00:28,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:28,128 INFO L82 PathProgramCache]: Analyzing trace with hash 697752466, now seen corresponding path program 23 times [2020-02-10 23:00:28,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:28,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876144245] [2020-02-10 23:00:28,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:28,311 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876144245] [2020-02-10 23:00:28,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:28,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:28,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140861516] [2020-02-10 23:00:28,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:28,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:28,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:28,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:28,313 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:28,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 154 transitions. Second operand 7 states. [2020-02-10 23:00:28,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:28,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:28,313 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:29,351 INFO L129 PetriNetUnfolder]: 90/977 cut-off events. [2020-02-10 23:00:29,352 INFO L130 PetriNetUnfolder]: For 70930/71383 co-relation queries the response was YES. [2020-02-10 23:00:29,369 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 23:00:29,394 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 77 selfloop transitions, 70 changer transitions 0/159 dead transitions. [2020-02-10 23:00:29,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:29,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:29,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:29,395 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:29,395 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:29,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:29,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:29,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:29,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:29,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:29,396 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:29,396 INFO L178 Difference]: Start difference. First operand has 246 places, 154 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:29,399 INFO L206 Difference]: Finished difference. Result has 254 places, 156 transitions [2020-02-10 23:00:29,400 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 23:00:29,400 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 254 places, 156 transitions [2020-02-10 23:00:30,045 INFO L129 PetriNetUnfolder]: 88/971 cut-off events. [2020-02-10 23:00:30,046 INFO L130 PetriNetUnfolder]: For 70371/70430 co-relation queries the response was YES. [2020-02-10 23:00:30,060 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 23:00:30,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 156 transitions [2020-02-10 23:00:30,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 156 transitions [2020-02-10 23:00:30,082 INFO L479 AbstractCegarLoop]: Abstraction has has 254 places, 156 transitions [2020-02-10 23:00:30,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:30,404 INFO L129 PetriNetUnfolder]: 88/882 cut-off events. [2020-02-10 23:00:30,404 INFO L130 PetriNetUnfolder]: For 70371/70430 co-relation queries the response was YES. [2020-02-10 23:00:30,405 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:30,405 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:30,405 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 23:00:30,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:30,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1584908990, now seen corresponding path program 24 times [2020-02-10 23:00:30,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:30,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774555598] [2020-02-10 23:00:30,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:30,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774555598] [2020-02-10 23:00:30,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:30,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:30,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168087003] [2020-02-10 23:00:30,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:30,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:30,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:30,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:30,565 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:30,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 156 transitions. Second operand 7 states. [2020-02-10 23:00:30,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:30,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:30,565 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:31,618 INFO L129 PetriNetUnfolder]: 90/991 cut-off events. [2020-02-10 23:00:31,618 INFO L130 PetriNetUnfolder]: For 75834/76255 co-relation queries the response was YES. [2020-02-10 23:00:31,634 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 23:00:31,658 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 96 selfloop transitions, 71 changer transitions 0/179 dead transitions. [2020-02-10 23:00:31,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:31,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:31,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:31,659 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:31,659 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:31,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:31,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:31,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:31,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:31,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:31,661 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:31,661 INFO L178 Difference]: Start difference. First operand has 254 places, 156 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:31,664 INFO L206 Difference]: Finished difference. Result has 264 places, 167 transitions [2020-02-10 23:00:31,665 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 23:00:31,665 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 264 places, 167 transitions [2020-02-10 23:00:32,324 INFO L129 PetriNetUnfolder]: 89/988 cut-off events. [2020-02-10 23:00:32,324 INFO L130 PetriNetUnfolder]: For 76504/76560 co-relation queries the response was YES. [2020-02-10 23:00:32,342 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 23:00:32,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 167 transitions [2020-02-10 23:00:32,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 167 transitions [2020-02-10 23:00:32,371 INFO L479 AbstractCegarLoop]: Abstraction has has 264 places, 167 transitions [2020-02-10 23:00:32,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:32,717 INFO L129 PetriNetUnfolder]: 89/898 cut-off events. [2020-02-10 23:00:32,717 INFO L130 PetriNetUnfolder]: For 76926/77026 co-relation queries the response was YES. [2020-02-10 23:00:32,717 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:32,717 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:32,718 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 23:00:32,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:32,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1819494330, now seen corresponding path program 25 times [2020-02-10 23:00:32,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:32,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795888351] [2020-02-10 23:00:32,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:32,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:32,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795888351] [2020-02-10 23:00:32,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:32,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:32,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927501136] [2020-02-10 23:00:32,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:32,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:32,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:32,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:32,882 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:32,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 167 transitions. Second operand 7 states. [2020-02-10 23:00:32,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:32,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:32,883 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:34,167 INFO L129 PetriNetUnfolder]: 90/990 cut-off events. [2020-02-10 23:00:34,167 INFO L130 PetriNetUnfolder]: For 80026/80260 co-relation queries the response was YES. [2020-02-10 23:00:34,185 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 23:00:34,212 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 106 selfloop transitions, 59 changer transitions 0/177 dead transitions. [2020-02-10 23:00:34,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:34,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:34,213 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:34,213 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:34,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:34,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:34,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:34,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:34,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:34,215 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:34,215 INFO L178 Difference]: Start difference. First operand has 264 places, 167 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:34,218 INFO L206 Difference]: Finished difference. Result has 272 places, 171 transitions [2020-02-10 23:00:34,219 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 23:00:34,219 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 272 places, 171 transitions [2020-02-10 23:00:34,894 INFO L129 PetriNetUnfolder]: 89/987 cut-off events. [2020-02-10 23:00:34,895 INFO L130 PetriNetUnfolder]: For 81988/82088 co-relation queries the response was YES. [2020-02-10 23:00:34,913 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 23:00:34,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 171 transitions [2020-02-10 23:00:34,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 171 transitions [2020-02-10 23:00:34,939 INFO L479 AbstractCegarLoop]: Abstraction has has 272 places, 171 transitions [2020-02-10 23:00:34,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:35,291 INFO L129 PetriNetUnfolder]: 89/898 cut-off events. [2020-02-10 23:00:35,291 INFO L130 PetriNetUnfolder]: For 81544/81600 co-relation queries the response was YES. [2020-02-10 23:00:35,291 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:35,291 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:35,291 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 23:00:35,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:35,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1517526880, now seen corresponding path program 26 times [2020-02-10 23:00:35,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:35,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738742491] [2020-02-10 23:00:35,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:35,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738742491] [2020-02-10 23:00:35,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:35,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:35,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621408546] [2020-02-10 23:00:35,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:35,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:35,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:35,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:35,505 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:35,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 171 transitions. Second operand 7 states. [2020-02-10 23:00:35,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:35,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:35,506 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:36,860 INFO L129 PetriNetUnfolder]: 90/989 cut-off events. [2020-02-10 23:00:36,860 INFO L130 PetriNetUnfolder]: For 85992/86413 co-relation queries the response was YES. [2020-02-10 23:00:36,884 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 23:00:36,919 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 102 selfloop transitions, 79 changer transitions 1/194 dead transitions. [2020-02-10 23:00:36,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:36,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:36,921 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:36,921 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:36,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:36,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:36,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:36,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:36,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:36,922 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:36,923 INFO L178 Difference]: Start difference. First operand has 272 places, 171 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:36,926 INFO L206 Difference]: Finished difference. Result has 282 places, 179 transitions [2020-02-10 23:00:36,926 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 23:00:36,926 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 282 places, 179 transitions [2020-02-10 23:00:37,604 INFO L129 PetriNetUnfolder]: 89/984 cut-off events. [2020-02-10 23:00:37,604 INFO L130 PetriNetUnfolder]: For 87783/87843 co-relation queries the response was YES. [2020-02-10 23:00:37,622 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 23:00:37,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 179 transitions [2020-02-10 23:00:37,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 179 transitions [2020-02-10 23:00:37,648 INFO L479 AbstractCegarLoop]: Abstraction has has 282 places, 179 transitions [2020-02-10 23:00:37,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:38,015 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:00:38,015 INFO L130 PetriNetUnfolder]: For 87748/87775 co-relation queries the response was YES. [2020-02-10 23:00:38,015 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:38,015 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:38,015 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 23:00:38,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:38,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1902876912, now seen corresponding path program 27 times [2020-02-10 23:00:38,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:38,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661592366] [2020-02-10 23:00:38,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:38,192 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661592366] [2020-02-10 23:00:38,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:38,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:38,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209699901] [2020-02-10 23:00:38,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:38,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:38,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:38,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:38,194 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:38,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 179 transitions. Second operand 7 states. [2020-02-10 23:00:38,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:38,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:38,194 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:39,360 INFO L129 PetriNetUnfolder]: 90/986 cut-off events. [2020-02-10 23:00:39,361 INFO L130 PetriNetUnfolder]: For 91075/91256 co-relation queries the response was YES. [2020-02-10 23:00:39,378 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 23:00:39,405 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 122 selfloop transitions, 64 changer transitions 0/198 dead transitions. [2020-02-10 23:00:39,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:39,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:39,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:39,406 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:39,406 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:39,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:39,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:39,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:39,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:39,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:39,408 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:39,408 INFO L178 Difference]: Start difference. First operand has 282 places, 179 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:39,411 INFO L206 Difference]: Finished difference. Result has 292 places, 186 transitions [2020-02-10 23:00:39,412 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 23:00:39,412 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 292 places, 186 transitions [2020-02-10 23:00:40,149 INFO L129 PetriNetUnfolder]: 89/983 cut-off events. [2020-02-10 23:00:40,150 INFO L130 PetriNetUnfolder]: For 93624/93651 co-relation queries the response was YES. [2020-02-10 23:00:40,169 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 23:00:40,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 186 transitions [2020-02-10 23:00:40,197 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 186 transitions [2020-02-10 23:00:40,197 INFO L479 AbstractCegarLoop]: Abstraction has has 292 places, 186 transitions [2020-02-10 23:00:40,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:40,598 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:00:40,598 INFO L130 PetriNetUnfolder]: For 94285/94386 co-relation queries the response was YES. [2020-02-10 23:00:40,598 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:40,598 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:40,599 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 23:00:40,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:40,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1110049154, now seen corresponding path program 28 times [2020-02-10 23:00:40,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:40,599 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229304850] [2020-02-10 23:00:40,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:40,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229304850] [2020-02-10 23:00:40,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:40,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:40,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540185671] [2020-02-10 23:00:40,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:40,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:40,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:40,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:40,753 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:40,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 186 transitions. Second operand 7 states. [2020-02-10 23:00:40,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:40,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:40,753 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:42,077 INFO L129 PetriNetUnfolder]: 90/985 cut-off events. [2020-02-10 23:00:42,078 INFO L130 PetriNetUnfolder]: For 97020/97199 co-relation queries the response was YES. [2020-02-10 23:00:42,098 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 23:00:42,127 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 108 selfloop transitions, 80 changer transitions 0/200 dead transitions. [2020-02-10 23:00:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:42,128 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:42,128 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:42,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:42,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:42,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:42,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:42,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:42,129 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:42,129 INFO L178 Difference]: Start difference. First operand has 292 places, 186 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:42,132 INFO L206 Difference]: Finished difference. Result has 300 places, 189 transitions [2020-02-10 23:00:42,132 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 23:00:42,132 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 300 places, 189 transitions [2020-02-10 23:00:42,882 INFO L129 PetriNetUnfolder]: 89/982 cut-off events. [2020-02-10 23:00:42,882 INFO L130 PetriNetUnfolder]: For 98888/98989 co-relation queries the response was YES. [2020-02-10 23:00:42,901 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 23:00:42,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 189 transitions [2020-02-10 23:00:42,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 189 transitions [2020-02-10 23:00:42,930 INFO L479 AbstractCegarLoop]: Abstraction has has 300 places, 189 transitions [2020-02-10 23:00:42,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:43,349 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:00:43,349 INFO L130 PetriNetUnfolder]: For 98888/98989 co-relation queries the response was YES. [2020-02-10 23:00:43,349 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:43,349 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:43,349 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 23:00:43,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:43,350 INFO L82 PathProgramCache]: Analyzing trace with hash 839613698, now seen corresponding path program 29 times [2020-02-10 23:00:43,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:43,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101962358] [2020-02-10 23:00:43,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:43,518 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 23:00:43,518 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101962358] [2020-02-10 23:00:43,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:43,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:43,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007818005] [2020-02-10 23:00:43,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:43,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:43,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:43,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:43,520 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:43,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 189 transitions. Second operand 7 states. [2020-02-10 23:00:43,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:43,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:43,520 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:44,866 INFO L129 PetriNetUnfolder]: 90/984 cut-off events. [2020-02-10 23:00:44,867 INFO L130 PetriNetUnfolder]: For 101724/101903 co-relation queries the response was YES. [2020-02-10 23:00:44,887 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 23:00:44,917 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 108 selfloop transitions, 90 changer transitions 0/210 dead transitions. [2020-02-10 23:00:44,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:44,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:44,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:44,919 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:44,919 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:44,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:44,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:44,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:44,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:44,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:44,920 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:44,920 INFO L178 Difference]: Start difference. First operand has 300 places, 189 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:44,923 INFO L206 Difference]: Finished difference. Result has 309 places, 196 transitions [2020-02-10 23:00:44,923 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 23:00:44,923 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 309 places, 196 transitions [2020-02-10 23:00:45,767 INFO L129 PetriNetUnfolder]: 89/981 cut-off events. [2020-02-10 23:00:45,767 INFO L130 PetriNetUnfolder]: For 104289/104390 co-relation queries the response was YES. [2020-02-10 23:00:45,785 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 23:00:45,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 196 transitions [2020-02-10 23:00:45,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 196 transitions [2020-02-10 23:00:45,811 INFO L479 AbstractCegarLoop]: Abstraction has has 309 places, 196 transitions [2020-02-10 23:00:45,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:46,224 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:00:46,224 INFO L130 PetriNetUnfolder]: For 103840/103884 co-relation queries the response was YES. [2020-02-10 23:00:46,224 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:46,224 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:46,225 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 23:00:46,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:46,225 INFO L82 PathProgramCache]: Analyzing trace with hash -145799558, now seen corresponding path program 30 times [2020-02-10 23:00:46,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:46,225 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146657047] [2020-02-10 23:00:46,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:46,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146657047] [2020-02-10 23:00:46,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:46,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:46,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443940946] [2020-02-10 23:00:46,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:46,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:46,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:46,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:46,399 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:46,399 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 196 transitions. Second operand 7 states. [2020-02-10 23:00:46,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:46,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:46,399 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:47,817 INFO L129 PetriNetUnfolder]: 90/983 cut-off events. [2020-02-10 23:00:47,817 INFO L130 PetriNetUnfolder]: For 107184/107365 co-relation queries the response was YES. [2020-02-10 23:00:47,838 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 23:00:47,869 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 116 selfloop transitions, 75 changer transitions 0/203 dead transitions. [2020-02-10 23:00:47,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:47,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:47,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:47,870 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:47,870 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:47,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:47,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:47,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:47,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:47,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:47,872 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:47,872 INFO L178 Difference]: Start difference. First operand has 309 places, 196 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:47,876 INFO L206 Difference]: Finished difference. Result has 316 places, 196 transitions [2020-02-10 23:00:47,876 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 23:00:47,876 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 316 places, 196 transitions [2020-02-10 23:00:48,651 INFO L129 PetriNetUnfolder]: 89/980 cut-off events. [2020-02-10 23:00:48,651 INFO L130 PetriNetUnfolder]: For 108230/108274 co-relation queries the response was YES. [2020-02-10 23:00:48,671 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 23:00:48,671 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 196 transitions [2020-02-10 23:00:48,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 316 places, 196 transitions [2020-02-10 23:00:48,700 INFO L479 AbstractCegarLoop]: Abstraction has has 316 places, 196 transitions [2020-02-10 23:00:48,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:49,113 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:00:49,113 INFO L130 PetriNetUnfolder]: For 108230/108274 co-relation queries the response was YES. [2020-02-10 23:00:49,113 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:49,113 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:49,114 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 23:00:49,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:49,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1041369948, now seen corresponding path program 31 times [2020-02-10 23:00:49,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:49,114 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496836929] [2020-02-10 23:00:49,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:49,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496836929] [2020-02-10 23:00:49,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:49,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:49,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584156610] [2020-02-10 23:00:49,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:49,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:49,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:49,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:49,291 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:49,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 196 transitions. Second operand 7 states. [2020-02-10 23:00:49,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:49,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:49,291 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:50,756 INFO L129 PetriNetUnfolder]: 90/982 cut-off events. [2020-02-10 23:00:50,757 INFO L130 PetriNetUnfolder]: For 111663/111844 co-relation queries the response was YES. [2020-02-10 23:00:50,775 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 23:00:50,802 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 103 selfloop transitions, 89 changer transitions 0/204 dead transitions. [2020-02-10 23:00:50,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:50,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:50,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:50,804 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:50,804 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:50,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:50,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:50,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:50,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:50,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:50,805 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:50,806 INFO L178 Difference]: Start difference. First operand has 316 places, 196 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:50,808 INFO L206 Difference]: Finished difference. Result has 324 places, 201 transitions [2020-02-10 23:00:50,809 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 23:00:50,809 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 324 places, 201 transitions [2020-02-10 23:00:51,689 INFO L129 PetriNetUnfolder]: 89/979 cut-off events. [2020-02-10 23:00:51,689 INFO L130 PetriNetUnfolder]: For 113211/113255 co-relation queries the response was YES. [2020-02-10 23:00:51,710 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 23:00:51,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 201 transitions [2020-02-10 23:00:51,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 201 transitions [2020-02-10 23:00:51,741 INFO L479 AbstractCegarLoop]: Abstraction has has 324 places, 201 transitions [2020-02-10 23:00:51,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:52,172 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:00:52,172 INFO L130 PetriNetUnfolder]: For 112987/113013 co-relation queries the response was YES. [2020-02-10 23:00:52,172 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:52,172 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:52,172 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 23:00:52,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:52,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1777861626, now seen corresponding path program 32 times [2020-02-10 23:00:52,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:52,173 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777107269] [2020-02-10 23:00:52,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:00:52,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777107269] [2020-02-10 23:00:52,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:52,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:52,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755520039] [2020-02-10 23:00:52,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:52,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:52,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:52,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:52,325 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:52,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 201 transitions. Second operand 7 states. [2020-02-10 23:00:52,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:52,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:52,325 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:53,693 INFO L129 PetriNetUnfolder]: 90/981 cut-off events. [2020-02-10 23:00:53,693 INFO L130 PetriNetUnfolder]: For 116330/116439 co-relation queries the response was YES. [2020-02-10 23:00:53,713 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 23:00:53,742 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 104 selfloop transitions, 89 changer transitions 0/205 dead transitions. [2020-02-10 23:00:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:53,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:53,743 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:53,743 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:53,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:53,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:53,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:53,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:53,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:53,744 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:53,744 INFO L178 Difference]: Start difference. First operand has 324 places, 201 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:53,747 INFO L206 Difference]: Finished difference. Result has 332 places, 202 transitions [2020-02-10 23:00:53,748 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 23:00:53,748 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 332 places, 202 transitions [2020-02-10 23:00:54,630 INFO L129 PetriNetUnfolder]: 89/978 cut-off events. [2020-02-10 23:00:54,630 INFO L130 PetriNetUnfolder]: For 117721/117747 co-relation queries the response was YES. [2020-02-10 23:00:54,652 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 23:00:54,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 202 transitions [2020-02-10 23:00:54,682 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 202 transitions [2020-02-10 23:00:54,682 INFO L479 AbstractCegarLoop]: Abstraction has has 332 places, 202 transitions [2020-02-10 23:00:54,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:55,149 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:00:55,149 INFO L130 PetriNetUnfolder]: For 117721/117747 co-relation queries the response was YES. [2020-02-10 23:00:55,150 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:55,150 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:55,150 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 23:00:55,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:55,150 INFO L82 PathProgramCache]: Analyzing trace with hash 510966206, now seen corresponding path program 33 times [2020-02-10 23:00:55,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:55,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622006339] [2020-02-10 23:00:55,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:55,306 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 23:00:55,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622006339] [2020-02-10 23:00:55,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:55,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:55,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333404456] [2020-02-10 23:00:55,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:55,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:55,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:55,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:55,308 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:55,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 202 transitions. Second operand 7 states. [2020-02-10 23:00:55,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:55,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:55,309 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:00:56,832 INFO L129 PetriNetUnfolder]: 90/980 cut-off events. [2020-02-10 23:00:56,832 INFO L130 PetriNetUnfolder]: For 121156/121265 co-relation queries the response was YES. [2020-02-10 23:00:56,854 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 23:00:56,884 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 113 selfloop transitions, 90 changer transitions 0/215 dead transitions. [2020-02-10 23:00:56,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:00:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:00:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:00:56,886 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:00:56,886 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:00:56,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:00:56,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:00:56,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:00:56,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:00:56,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:00:56,887 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:00:56,887 INFO L178 Difference]: Start difference. First operand has 332 places, 202 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:00:56,890 INFO L206 Difference]: Finished difference. Result has 340 places, 204 transitions [2020-02-10 23:00:56,890 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 23:00:56,890 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 340 places, 204 transitions [2020-02-10 23:00:57,794 INFO L129 PetriNetUnfolder]: 89/977 cut-off events. [2020-02-10 23:00:57,794 INFO L130 PetriNetUnfolder]: For 122577/122603 co-relation queries the response was YES. [2020-02-10 23:00:57,816 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 23:00:57,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 204 transitions [2020-02-10 23:00:57,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 204 transitions [2020-02-10 23:00:57,847 INFO L479 AbstractCegarLoop]: Abstraction has has 340 places, 204 transitions [2020-02-10 23:00:57,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:00:58,314 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:00:58,314 INFO L130 PetriNetUnfolder]: For 122577/122603 co-relation queries the response was YES. [2020-02-10 23:00:58,314 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:00:58,314 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:00:58,314 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 23:00:58,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:00:58,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1016883770, now seen corresponding path program 34 times [2020-02-10 23:00:58,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:00:58,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112759969] [2020-02-10 23:00:58,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:00:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:00:58,488 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 23:00:58,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112759969] [2020-02-10 23:00:58,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:00:58,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:00:58,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769598560] [2020-02-10 23:00:58,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:00:58,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:00:58,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:00:58,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:00:58,490 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:00:58,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 204 transitions. Second operand 7 states. [2020-02-10 23:00:58,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:00:58,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:00:58,491 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:00,019 INFO L129 PetriNetUnfolder]: 90/979 cut-off events. [2020-02-10 23:01:00,020 INFO L130 PetriNetUnfolder]: For 126096/126205 co-relation queries the response was YES. [2020-02-10 23:01:00,041 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 23:01:00,072 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 119 selfloop transitions, 82 changer transitions 0/213 dead transitions. [2020-02-10 23:01:00,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:00,074 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:00,074 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:00,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:00,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:00,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:00,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:00,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:00,075 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:00,075 INFO L178 Difference]: Start difference. First operand has 340 places, 204 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:00,079 INFO L206 Difference]: Finished difference. Result has 348 places, 208 transitions [2020-02-10 23:01:00,080 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 23:01:00,080 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 348 places, 208 transitions [2020-02-10 23:01:00,988 INFO L129 PetriNetUnfolder]: 89/976 cut-off events. [2020-02-10 23:01:00,988 INFO L130 PetriNetUnfolder]: For 128274/128300 co-relation queries the response was YES. [2020-02-10 23:01:01,011 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 23:01:01,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 348 places, 208 transitions [2020-02-10 23:01:01,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 348 places, 208 transitions [2020-02-10 23:01:01,044 INFO L479 AbstractCegarLoop]: Abstraction has has 348 places, 208 transitions [2020-02-10 23:01:01,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:01,544 INFO L129 PetriNetUnfolder]: 89/896 cut-off events. [2020-02-10 23:01:01,545 INFO L130 PetriNetUnfolder]: For 128548/128593 co-relation queries the response was YES. [2020-02-10 23:01:01,545 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:01,545 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:01,545 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 23:01:01,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:01,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1018956826, now seen corresponding path program 35 times [2020-02-10 23:01:01,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:01,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662119795] [2020-02-10 23:01:01,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:01,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662119795] [2020-02-10 23:01:01,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:01,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:01,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841145565] [2020-02-10 23:01:01,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:01,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:01,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:01,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:01,706 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:01,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 208 transitions. Second operand 7 states. [2020-02-10 23:01:01,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:01,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:01,707 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:03,314 INFO L129 PetriNetUnfolder]: 90/978 cut-off events. [2020-02-10 23:01:03,314 INFO L130 PetriNetUnfolder]: For 132444/132639 co-relation queries the response was YES. [2020-02-10 23:01:03,338 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 23:01:03,372 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 154 selfloop transitions, 96 changer transitions 5/267 dead transitions. [2020-02-10 23:01:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:03,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:03,373 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:03,373 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:03,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:03,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:03,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:03,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:03,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:03,374 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:03,374 INFO L178 Difference]: Start difference. First operand has 348 places, 208 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:03,377 INFO L206 Difference]: Finished difference. Result has 358 places, 233 transitions [2020-02-10 23:01:03,378 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 23:01:03,378 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 358 places, 233 transitions [2020-02-10 23:01:04,376 INFO L129 PetriNetUnfolder]: 89/972 cut-off events. [2020-02-10 23:01:04,376 INFO L130 PetriNetUnfolder]: For 135344/135395 co-relation queries the response was YES. [2020-02-10 23:01:04,402 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 23:01:04,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 358 places, 233 transitions [2020-02-10 23:01:04,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 358 places, 233 transitions [2020-02-10 23:01:04,439 INFO L479 AbstractCegarLoop]: Abstraction has has 358 places, 233 transitions [2020-02-10 23:01:04,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:04,942 INFO L129 PetriNetUnfolder]: 89/893 cut-off events. [2020-02-10 23:01:04,942 INFO L130 PetriNetUnfolder]: For 135244/135294 co-relation queries the response was YES. [2020-02-10 23:01:04,942 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:04,942 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:04,942 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 23:01:04,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:04,943 INFO L82 PathProgramCache]: Analyzing trace with hash -256403714, now seen corresponding path program 36 times [2020-02-10 23:01:04,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:04,943 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846877446] [2020-02-10 23:01:04,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:05,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846877446] [2020-02-10 23:01:05,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:05,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:05,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005461252] [2020-02-10 23:01:05,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:05,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:05,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:05,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:05,102 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:05,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 233 transitions. Second operand 7 states. [2020-02-10 23:01:05,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:05,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:05,102 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:06,743 INFO L129 PetriNetUnfolder]: 90/974 cut-off events. [2020-02-10 23:01:06,744 INFO L130 PetriNetUnfolder]: For 139713/139924 co-relation queries the response was YES. [2020-02-10 23:01:06,768 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 23:01:06,802 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 140 selfloop transitions, 86 changer transitions 2/240 dead transitions. [2020-02-10 23:01:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:06,804 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:06,804 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:06,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:06,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:06,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:06,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:06,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:06,806 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:06,806 INFO L178 Difference]: Start difference. First operand has 358 places, 233 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:06,812 INFO L206 Difference]: Finished difference. Result has 366 places, 235 transitions [2020-02-10 23:01:06,812 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 23:01:06,812 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 366 places, 235 transitions [2020-02-10 23:01:07,804 INFO L129 PetriNetUnfolder]: 88/962 cut-off events. [2020-02-10 23:01:07,804 INFO L130 PetriNetUnfolder]: For 140575/140625 co-relation queries the response was YES. [2020-02-10 23:01:07,828 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 23:01:07,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 366 places, 235 transitions [2020-02-10 23:01:07,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 365 places, 235 transitions [2020-02-10 23:01:07,862 INFO L479 AbstractCegarLoop]: Abstraction has has 365 places, 235 transitions [2020-02-10 23:01:07,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:08,360 INFO L129 PetriNetUnfolder]: 88/884 cut-off events. [2020-02-10 23:01:08,361 INFO L130 PetriNetUnfolder]: For 140575/140625 co-relation queries the response was YES. [2020-02-10 23:01:08,361 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:08,361 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:08,361 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 23:01:08,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:08,361 INFO L82 PathProgramCache]: Analyzing trace with hash -207926228, now seen corresponding path program 37 times [2020-02-10 23:01:08,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:08,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230818981] [2020-02-10 23:01:08,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:08,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230818981] [2020-02-10 23:01:08,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:08,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:08,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262341305] [2020-02-10 23:01:08,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:08,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:08,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:08,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:08,524 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:08,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 235 transitions. Second operand 7 states. [2020-02-10 23:01:08,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:08,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:08,524 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:10,210 INFO L129 PetriNetUnfolder]: 89/964 cut-off events. [2020-02-10 23:01:10,211 INFO L130 PetriNetUnfolder]: For 145125/145343 co-relation queries the response was YES. [2020-02-10 23:01:10,238 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 23:01:10,277 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 125 selfloop transitions, 103 changer transitions 0/240 dead transitions. [2020-02-10 23:01:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:10,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:10,278 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:10,278 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:10,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:10,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:10,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:10,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:10,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:10,280 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:10,280 INFO L178 Difference]: Start difference. First operand has 365 places, 235 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:10,285 INFO L206 Difference]: Finished difference. Result has 372 places, 235 transitions [2020-02-10 23:01:10,286 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 23:01:10,286 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 372 places, 235 transitions [2020-02-10 23:01:11,249 INFO L129 PetriNetUnfolder]: 88/961 cut-off events. [2020-02-10 23:01:11,249 INFO L130 PetriNetUnfolder]: For 145393/145443 co-relation queries the response was YES. [2020-02-10 23:01:11,273 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 23:01:11,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 372 places, 235 transitions [2020-02-10 23:01:11,306 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 372 places, 235 transitions [2020-02-10 23:01:11,307 INFO L479 AbstractCegarLoop]: Abstraction has has 372 places, 235 transitions [2020-02-10 23:01:11,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:11,809 INFO L129 PetriNetUnfolder]: 88/884 cut-off events. [2020-02-10 23:01:11,809 INFO L130 PetriNetUnfolder]: For 145393/145443 co-relation queries the response was YES. [2020-02-10 23:01:11,809 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:11,809 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:11,809 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 23:01:11,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:11,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1775124158, now seen corresponding path program 38 times [2020-02-10 23:01:11,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:11,810 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049004503] [2020-02-10 23:01:11,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:11,951 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 23:01:11,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049004503] [2020-02-10 23:01:11,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:11,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:11,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685503278] [2020-02-10 23:01:11,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:11,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:11,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:11,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:11,953 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:11,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 235 transitions. Second operand 7 states. [2020-02-10 23:01:11,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:11,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:11,954 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:13,612 INFO L129 PetriNetUnfolder]: 89/963 cut-off events. [2020-02-10 23:01:13,612 INFO L130 PetriNetUnfolder]: For 149526/149661 co-relation queries the response was YES. [2020-02-10 23:01:13,636 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 23:01:13,671 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 119 selfloop transitions, 96 changer transitions 11/238 dead transitions. [2020-02-10 23:01:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:13,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:13,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:13,672 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:13,673 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:13,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:13,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:13,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:13,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:13,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:13,674 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:13,674 INFO L178 Difference]: Start difference. First operand has 372 places, 235 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:13,677 INFO L206 Difference]: Finished difference. Result has 379 places, 224 transitions [2020-02-10 23:01:13,677 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 23:01:13,678 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 379 places, 224 transitions [2020-02-10 23:01:14,590 INFO L129 PetriNetUnfolder]: 85/926 cut-off events. [2020-02-10 23:01:14,591 INFO L130 PetriNetUnfolder]: For 145371/145421 co-relation queries the response was YES. [2020-02-10 23:01:14,613 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 23:01:14,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 379 places, 224 transitions [2020-02-10 23:01:14,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 373 places, 224 transitions [2020-02-10 23:01:14,647 INFO L479 AbstractCegarLoop]: Abstraction has has 373 places, 224 transitions [2020-02-10 23:01:14,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:15,130 INFO L129 PetriNetUnfolder]: 85/850 cut-off events. [2020-02-10 23:01:15,130 INFO L130 PetriNetUnfolder]: For 145371/145421 co-relation queries the response was YES. [2020-02-10 23:01:15,130 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:15,130 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:15,131 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 23:01:15,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:15,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1872278270, now seen corresponding path program 39 times [2020-02-10 23:01:15,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:15,131 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579516182] [2020-02-10 23:01:15,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:15,299 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579516182] [2020-02-10 23:01:15,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:15,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:15,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865267237] [2020-02-10 23:01:15,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:15,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:15,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:15,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:15,302 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:15,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 224 transitions. Second operand 7 states. [2020-02-10 23:01:15,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:15,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:15,303 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:16,963 INFO L129 PetriNetUnfolder]: 86/928 cut-off events. [2020-02-10 23:01:16,963 INFO L130 PetriNetUnfolder]: For 149633/149768 co-relation queries the response was YES. [2020-02-10 23:01:16,987 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 23:01:17,021 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 120 selfloop transitions, 102 changer transitions 0/234 dead transitions. [2020-02-10 23:01:17,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:17,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:17,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:17,022 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:17,022 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:17,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:17,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:17,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:17,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:17,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:17,024 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:17,024 INFO L178 Difference]: Start difference. First operand has 373 places, 224 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:17,029 INFO L206 Difference]: Finished difference. Result has 382 places, 229 transitions [2020-02-10 23:01:17,029 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 23:01:17,029 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 382 places, 229 transitions [2020-02-10 23:01:17,975 INFO L129 PetriNetUnfolder]: 85/925 cut-off events. [2020-02-10 23:01:17,975 INFO L130 PetriNetUnfolder]: For 151750/151800 co-relation queries the response was YES. [2020-02-10 23:01:17,999 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 23:01:17,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 382 places, 229 transitions [2020-02-10 23:01:18,032 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 382 places, 229 transitions [2020-02-10 23:01:18,033 INFO L479 AbstractCegarLoop]: Abstraction has has 382 places, 229 transitions [2020-02-10 23:01:18,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:18,527 INFO L129 PetriNetUnfolder]: 85/850 cut-off events. [2020-02-10 23:01:18,527 INFO L130 PetriNetUnfolder]: For 151553/151582 co-relation queries the response was YES. [2020-02-10 23:01:18,527 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:18,528 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:18,528 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 23:01:18,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:18,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1017312472, now seen corresponding path program 40 times [2020-02-10 23:01:18,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:18,528 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577988688] [2020-02-10 23:01:18,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:18,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577988688] [2020-02-10 23:01:18,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:18,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:18,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052186455] [2020-02-10 23:01:18,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:18,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:18,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:18,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:18,712 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:18,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 229 transitions. Second operand 7 states. [2020-02-10 23:01:18,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:18,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:18,713 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:20,385 INFO L129 PetriNetUnfolder]: 86/927 cut-off events. [2020-02-10 23:01:20,385 INFO L130 PetriNetUnfolder]: For 156060/156193 co-relation queries the response was YES. [2020-02-10 23:01:20,410 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 23:01:20,447 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 153 selfloop transitions, 100 changer transitions 2/267 dead transitions. [2020-02-10 23:01:20,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:20,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:20,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:20,448 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:20,448 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:20,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:20,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:20,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:20,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:20,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:20,450 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:20,450 INFO L178 Difference]: Start difference. First operand has 382 places, 229 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:20,456 INFO L206 Difference]: Finished difference. Result has 392 places, 246 transitions [2020-02-10 23:01:20,456 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 23:01:20,456 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 392 places, 246 transitions [2020-02-10 23:01:21,434 INFO L129 PetriNetUnfolder]: 85/920 cut-off events. [2020-02-10 23:01:21,434 INFO L130 PetriNetUnfolder]: For 159307/159356 co-relation queries the response was YES. [2020-02-10 23:01:21,459 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 23:01:21,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 392 places, 246 transitions [2020-02-10 23:01:21,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 392 places, 246 transitions [2020-02-10 23:01:21,497 INFO L479 AbstractCegarLoop]: Abstraction has has 392 places, 246 transitions [2020-02-10 23:01:21,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:22,021 INFO L129 PetriNetUnfolder]: 85/846 cut-off events. [2020-02-10 23:01:22,021 INFO L130 PetriNetUnfolder]: For 159785/159874 co-relation queries the response was YES. [2020-02-10 23:01:22,022 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:22,022 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:22,022 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 23:01:22,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:22,022 INFO L82 PathProgramCache]: Analyzing trace with hash -277838624, now seen corresponding path program 41 times [2020-02-10 23:01:22,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:22,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577449138] [2020-02-10 23:01:22,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:22,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577449138] [2020-02-10 23:01:22,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:22,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:22,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671798145] [2020-02-10 23:01:22,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:22,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:22,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:22,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:22,205 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:22,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 246 transitions. Second operand 7 states. [2020-02-10 23:01:22,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:22,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:22,206 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:23,996 INFO L129 PetriNetUnfolder]: 86/922 cut-off events. [2020-02-10 23:01:23,997 INFO L130 PetriNetUnfolder]: For 164229/164442 co-relation queries the response was YES. [2020-02-10 23:01:24,021 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 23:01:24,057 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 143 selfloop transitions, 104 changer transitions 0/259 dead transitions. [2020-02-10 23:01:24,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:24,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:24,059 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:24,059 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:24,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:24,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:24,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:24,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:24,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:24,060 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:24,060 INFO L178 Difference]: Start difference. First operand has 392 places, 246 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:24,064 INFO L206 Difference]: Finished difference. Result has 401 places, 252 transitions [2020-02-10 23:01:24,064 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 23:01:24,064 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 401 places, 252 transitions [2020-02-10 23:01:25,052 INFO L129 PetriNetUnfolder]: 85/919 cut-off events. [2020-02-10 23:01:25,053 INFO L130 PetriNetUnfolder]: For 167112/167246 co-relation queries the response was YES. [2020-02-10 23:01:25,077 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 23:01:25,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 401 places, 252 transitions [2020-02-10 23:01:25,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 401 places, 252 transitions [2020-02-10 23:01:25,113 INFO L479 AbstractCegarLoop]: Abstraction has has 401 places, 252 transitions [2020-02-10 23:01:25,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:25,644 INFO L129 PetriNetUnfolder]: 85/846 cut-off events. [2020-02-10 23:01:25,644 INFO L130 PetriNetUnfolder]: For 167112/167246 co-relation queries the response was YES. [2020-02-10 23:01:25,644 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:25,644 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:25,645 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 23:01:25,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:25,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1242264040, now seen corresponding path program 42 times [2020-02-10 23:01:25,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:25,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028790551] [2020-02-10 23:01:25,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:25,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028790551] [2020-02-10 23:01:25,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:25,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:25,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677055356] [2020-02-10 23:01:25,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:25,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:25,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:25,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:25,801 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:25,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 252 transitions. Second operand 7 states. [2020-02-10 23:01:25,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:25,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:25,801 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:27,560 INFO L129 PetriNetUnfolder]: 86/921 cut-off events. [2020-02-10 23:01:27,561 INFO L130 PetriNetUnfolder]: For 171654/171993 co-relation queries the response was YES. [2020-02-10 23:01:27,586 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 23:01:27,623 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 138 selfloop transitions, 109 changer transitions 0/259 dead transitions. [2020-02-10 23:01:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:27,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:27,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:27,624 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:27,624 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:27,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:27,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:27,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:27,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:27,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:27,625 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:27,625 INFO L178 Difference]: Start difference. First operand has 401 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:27,630 INFO L206 Difference]: Finished difference. Result has 408 places, 252 transitions [2020-02-10 23:01:27,630 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 23:01:27,630 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 408 places, 252 transitions [2020-02-10 23:01:28,653 INFO L129 PetriNetUnfolder]: 85/918 cut-off events. [2020-02-10 23:01:28,653 INFO L130 PetriNetUnfolder]: For 171862/171996 co-relation queries the response was YES. [2020-02-10 23:01:28,679 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 23:01:28,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 408 places, 252 transitions [2020-02-10 23:01:28,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 408 places, 252 transitions [2020-02-10 23:01:28,714 INFO L479 AbstractCegarLoop]: Abstraction has has 408 places, 252 transitions [2020-02-10 23:01:28,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:29,261 INFO L129 PetriNetUnfolder]: 85/846 cut-off events. [2020-02-10 23:01:29,262 INFO L130 PetriNetUnfolder]: For 171862/171996 co-relation queries the response was YES. [2020-02-10 23:01:29,262 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:29,262 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:29,262 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 23:01:29,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:29,262 INFO L82 PathProgramCache]: Analyzing trace with hash -333837344, now seen corresponding path program 43 times [2020-02-10 23:01:29,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:29,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001469256] [2020-02-10 23:01:29,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:29,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001469256] [2020-02-10 23:01:29,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:29,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:29,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047567502] [2020-02-10 23:01:29,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:29,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:29,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:29,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:29,451 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:29,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 252 transitions. Second operand 7 states. [2020-02-10 23:01:29,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:29,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:29,451 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:31,236 INFO L129 PetriNetUnfolder]: 86/920 cut-off events. [2020-02-10 23:01:31,236 INFO L130 PetriNetUnfolder]: For 176498/176841 co-relation queries the response was YES. [2020-02-10 23:01:31,262 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 23:01:31,298 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 141 selfloop transitions, 105 changer transitions 0/258 dead transitions. [2020-02-10 23:01:31,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:31,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:31,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:31,299 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:31,300 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:31,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:31,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:31,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:31,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:31,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:31,301 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:31,301 INFO L178 Difference]: Start difference. First operand has 408 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:31,307 INFO L206 Difference]: Finished difference. Result has 416 places, 255 transitions [2020-02-10 23:01:31,308 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 23:01:31,308 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 416 places, 255 transitions [2020-02-10 23:01:32,324 INFO L129 PetriNetUnfolder]: 85/917 cut-off events. [2020-02-10 23:01:32,325 INFO L130 PetriNetUnfolder]: For 177374/177507 co-relation queries the response was YES. [2020-02-10 23:01:32,350 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 23:01:32,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 416 places, 255 transitions [2020-02-10 23:01:32,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 416 places, 255 transitions [2020-02-10 23:01:32,387 INFO L479 AbstractCegarLoop]: Abstraction has has 416 places, 255 transitions [2020-02-10 23:01:32,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:33,002 INFO L129 PetriNetUnfolder]: 85/846 cut-off events. [2020-02-10 23:01:33,003 INFO L130 PetriNetUnfolder]: For 177374/177507 co-relation queries the response was YES. [2020-02-10 23:01:33,003 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:33,003 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:33,003 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 23:01:33,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:33,003 INFO L82 PathProgramCache]: Analyzing trace with hash -470598144, now seen corresponding path program 44 times [2020-02-10 23:01:33,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:33,004 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705593888] [2020-02-10 23:01:33,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:33,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705593888] [2020-02-10 23:01:33,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:33,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:33,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241093886] [2020-02-10 23:01:33,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:33,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:33,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:33,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:33,172 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:33,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 255 transitions. Second operand 7 states. [2020-02-10 23:01:33,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:33,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:33,173 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:34,986 INFO L129 PetriNetUnfolder]: 86/919 cut-off events. [2020-02-10 23:01:34,986 INFO L130 PetriNetUnfolder]: For 184840/185546 co-relation queries the response was YES. [2020-02-10 23:01:35,012 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 23:01:35,049 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 147 selfloop transitions, 109 changer transitions 0/268 dead transitions. [2020-02-10 23:01:35,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:35,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:35,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:35,050 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:35,050 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:35,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:35,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:35,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:35,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:35,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:35,052 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:35,052 INFO L178 Difference]: Start difference. First operand has 416 places, 255 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:35,058 INFO L206 Difference]: Finished difference. Result has 424 places, 259 transitions [2020-02-10 23:01:35,058 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 23:01:35,058 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 424 places, 259 transitions [2020-02-10 23:01:36,113 INFO L129 PetriNetUnfolder]: 85/916 cut-off events. [2020-02-10 23:01:36,114 INFO L130 PetriNetUnfolder]: For 183702/183835 co-relation queries the response was YES. [2020-02-10 23:01:36,140 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 23:01:36,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 424 places, 259 transitions [2020-02-10 23:01:36,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 424 places, 259 transitions [2020-02-10 23:01:36,176 INFO L479 AbstractCegarLoop]: Abstraction has has 424 places, 259 transitions [2020-02-10 23:01:36,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:36,809 INFO L129 PetriNetUnfolder]: 85/846 cut-off events. [2020-02-10 23:01:36,809 INFO L130 PetriNetUnfolder]: For 183702/183835 co-relation queries the response was YES. [2020-02-10 23:01:36,809 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:36,809 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:36,809 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 23:01:36,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:36,810 INFO L82 PathProgramCache]: Analyzing trace with hash -923032864, now seen corresponding path program 45 times [2020-02-10 23:01:36,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:36,810 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202656594] [2020-02-10 23:01:36,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:36,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202656594] [2020-02-10 23:01:36,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:36,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:36,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018586374] [2020-02-10 23:01:36,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:36,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:36,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:36,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:36,974 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:36,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 259 transitions. Second operand 7 states. [2020-02-10 23:01:36,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:36,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:36,974 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:38,863 INFO L129 PetriNetUnfolder]: 86/918 cut-off events. [2020-02-10 23:01:38,863 INFO L130 PetriNetUnfolder]: For 191461/192167 co-relation queries the response was YES. [2020-02-10 23:01:38,890 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 23:01:38,928 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 149 selfloop transitions, 108 changer transitions 0/269 dead transitions. [2020-02-10 23:01:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:38,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:38,929 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:38,929 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:38,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:38,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:38,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:38,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:38,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:38,930 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:38,930 INFO L178 Difference]: Start difference. First operand has 424 places, 259 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:38,934 INFO L206 Difference]: Finished difference. Result has 432 places, 262 transitions [2020-02-10 23:01:38,934 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 23:01:38,935 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 432 places, 262 transitions [2020-02-10 23:01:39,995 INFO L129 PetriNetUnfolder]: 85/915 cut-off events. [2020-02-10 23:01:39,996 INFO L130 PetriNetUnfolder]: For 189127/189260 co-relation queries the response was YES. [2020-02-10 23:01:40,022 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 23:01:40,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 432 places, 262 transitions [2020-02-10 23:01:40,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 432 places, 262 transitions [2020-02-10 23:01:40,059 INFO L479 AbstractCegarLoop]: Abstraction has has 432 places, 262 transitions [2020-02-10 23:01:40,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:40,628 INFO L129 PetriNetUnfolder]: 85/846 cut-off events. [2020-02-10 23:01:40,628 INFO L130 PetriNetUnfolder]: For 189127/189260 co-relation queries the response was YES. [2020-02-10 23:01:40,628 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:40,628 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:40,628 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 23:01:40,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:40,629 INFO L82 PathProgramCache]: Analyzing trace with hash 413059018, now seen corresponding path program 46 times [2020-02-10 23:01:40,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:40,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483130324] [2020-02-10 23:01:40,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:40,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483130324] [2020-02-10 23:01:40,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:40,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:40,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758923772] [2020-02-10 23:01:40,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:40,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:40,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:40,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:40,787 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:40,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 262 transitions. Second operand 7 states. [2020-02-10 23:01:40,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:40,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:40,788 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:42,680 INFO L129 PetriNetUnfolder]: 86/917 cut-off events. [2020-02-10 23:01:42,680 INFO L130 PetriNetUnfolder]: For 196927/197635 co-relation queries the response was YES. [2020-02-10 23:01:42,707 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 23:01:42,746 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 147 selfloop transitions, 106 changer transitions 3/268 dead transitions. [2020-02-10 23:01:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:42,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:42,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:42,749 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:42,749 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:42,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:42,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:42,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:42,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:42,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:42,750 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:42,750 INFO L178 Difference]: Start difference. First operand has 432 places, 262 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:42,754 INFO L206 Difference]: Finished difference. Result has 440 places, 260 transitions [2020-02-10 23:01:42,754 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 23:01:42,755 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 440 places, 260 transitions [2020-02-10 23:01:43,827 INFO L129 PetriNetUnfolder]: 84/904 cut-off events. [2020-02-10 23:01:43,828 INFO L130 PetriNetUnfolder]: For 192635/192768 co-relation queries the response was YES. [2020-02-10 23:01:43,854 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 23:01:43,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 440 places, 260 transitions [2020-02-10 23:01:43,891 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 438 places, 260 transitions [2020-02-10 23:01:43,891 INFO L479 AbstractCegarLoop]: Abstraction has has 438 places, 260 transitions [2020-02-10 23:01:43,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:44,469 INFO L129 PetriNetUnfolder]: 84/836 cut-off events. [2020-02-10 23:01:44,469 INFO L130 PetriNetUnfolder]: For 192635/192768 co-relation queries the response was YES. [2020-02-10 23:01:44,469 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:44,469 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:44,469 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 23:01:44,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:44,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1128020576, now seen corresponding path program 47 times [2020-02-10 23:01:44,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:44,470 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443057515] [2020-02-10 23:01:44,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:44,626 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443057515] [2020-02-10 23:01:44,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:44,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:44,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321637892] [2020-02-10 23:01:44,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:44,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:44,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:44,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:44,627 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:44,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 260 transitions. Second operand 7 states. [2020-02-10 23:01:44,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:44,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:44,628 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:46,586 INFO L129 PetriNetUnfolder]: 85/906 cut-off events. [2020-02-10 23:01:46,586 INFO L130 PetriNetUnfolder]: For 200494/201202 co-relation queries the response was YES. [2020-02-10 23:01:46,616 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 23:01:46,655 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 101 changer transitions 2/265 dead transitions. [2020-02-10 23:01:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:46,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:46,656 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:46,656 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:46,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:46,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:46,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:46,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:46,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:46,657 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:46,657 INFO L178 Difference]: Start difference. First operand has 438 places, 260 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:46,662 INFO L206 Difference]: Finished difference. Result has 446 places, 260 transitions [2020-02-10 23:01:46,662 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 23:01:46,662 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 446 places, 260 transitions [2020-02-10 23:01:47,728 INFO L129 PetriNetUnfolder]: 83/894 cut-off events. [2020-02-10 23:01:47,728 INFO L130 PetriNetUnfolder]: For 197937/198070 co-relation queries the response was YES. [2020-02-10 23:01:47,755 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 23:01:47,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 446 places, 260 transitions [2020-02-10 23:01:47,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 445 places, 260 transitions [2020-02-10 23:01:47,869 INFO L479 AbstractCegarLoop]: Abstraction has has 445 places, 260 transitions [2020-02-10 23:01:47,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:48,464 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:01:48,464 INFO L130 PetriNetUnfolder]: For 197937/198070 co-relation queries the response was YES. [2020-02-10 23:01:48,464 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:48,464 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:48,464 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 23:01:48,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:48,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1606447848, now seen corresponding path program 48 times [2020-02-10 23:01:48,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:48,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967832139] [2020-02-10 23:01:48,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:48,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967832139] [2020-02-10 23:01:48,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:48,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:48,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749117681] [2020-02-10 23:01:48,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:48,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:48,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:48,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:48,610 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:48,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 260 transitions. Second operand 7 states. [2020-02-10 23:01:48,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:48,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:48,610 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:50,618 INFO L129 PetriNetUnfolder]: 84/896 cut-off events. [2020-02-10 23:01:50,619 INFO L130 PetriNetUnfolder]: For 207595/208581 co-relation queries the response was YES. [2020-02-10 23:01:50,646 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 23:01:50,684 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 149 selfloop transitions, 106 changer transitions 0/267 dead transitions. [2020-02-10 23:01:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:50,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:50,685 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:50,685 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:50,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:50,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:50,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:50,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:50,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:50,687 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:50,687 INFO L178 Difference]: Start difference. First operand has 445 places, 260 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:50,691 INFO L206 Difference]: Finished difference. Result has 452 places, 260 transitions [2020-02-10 23:01:50,691 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 23:01:50,691 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 452 places, 260 transitions [2020-02-10 23:01:51,779 INFO L129 PetriNetUnfolder]: 83/893 cut-off events. [2020-02-10 23:01:51,780 INFO L130 PetriNetUnfolder]: For 202163/202284 co-relation queries the response was YES. [2020-02-10 23:01:51,803 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 23:01:51,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 452 places, 260 transitions [2020-02-10 23:01:51,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 452 places, 260 transitions [2020-02-10 23:01:51,836 INFO L479 AbstractCegarLoop]: Abstraction has has 452 places, 260 transitions [2020-02-10 23:01:51,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:52,428 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:01:52,428 INFO L130 PetriNetUnfolder]: For 203072/203275 co-relation queries the response was YES. [2020-02-10 23:01:52,428 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:52,428 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:52,428 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 23:01:52,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:52,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1147671310, now seen corresponding path program 49 times [2020-02-10 23:01:52,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:52,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809413695] [2020-02-10 23:01:52,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:52,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809413695] [2020-02-10 23:01:52,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:52,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:52,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617025654] [2020-02-10 23:01:52,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:52,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:52,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:52,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:52,585 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:52,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 260 transitions. Second operand 7 states. [2020-02-10 23:01:52,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:52,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:52,585 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:54,655 INFO L129 PetriNetUnfolder]: 84/895 cut-off events. [2020-02-10 23:01:54,655 INFO L130 PetriNetUnfolder]: For 211818/212801 co-relation queries the response was YES. [2020-02-10 23:01:54,682 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 23:01:54,720 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 144 selfloop transitions, 107 changer transitions 0/263 dead transitions. [2020-02-10 23:01:54,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:54,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:54,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:54,721 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:54,722 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:54,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:54,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:54,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:54,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:54,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:54,723 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:54,723 INFO L178 Difference]: Start difference. First operand has 452 places, 260 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:54,729 INFO L206 Difference]: Finished difference. Result has 459 places, 260 transitions [2020-02-10 23:01:54,730 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 23:01:54,730 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 459 places, 260 transitions [2020-02-10 23:01:55,862 INFO L129 PetriNetUnfolder]: 83/892 cut-off events. [2020-02-10 23:01:55,862 INFO L130 PetriNetUnfolder]: For 208182/208385 co-relation queries the response was YES. [2020-02-10 23:01:55,888 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 23:01:55,889 INFO L82 GeneralOperation]: Start removeDead. Operand has 459 places, 260 transitions [2020-02-10 23:01:55,923 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 260 transitions [2020-02-10 23:01:55,923 INFO L479 AbstractCegarLoop]: Abstraction has has 459 places, 260 transitions [2020-02-10 23:01:55,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:01:56,524 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:01:56,525 INFO L130 PetriNetUnfolder]: For 208182/208385 co-relation queries the response was YES. [2020-02-10 23:01:56,525 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:01:56,525 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:01:56,525 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 23:01:56,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:01:56,525 INFO L82 PathProgramCache]: Analyzing trace with hash -2106558308, now seen corresponding path program 50 times [2020-02-10 23:01:56,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:01:56,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869030930] [2020-02-10 23:01:56,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:01:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:01:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:01:56,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869030930] [2020-02-10 23:01:56,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:01:56,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:01:56,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282135825] [2020-02-10 23:01:56,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:01:56,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:01:56,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:01:56,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:01:56,642 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:01:56,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 260 transitions. Second operand 7 states. [2020-02-10 23:01:56,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:01:56,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:01:56,643 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:01:58,730 INFO L129 PetriNetUnfolder]: 84/894 cut-off events. [2020-02-10 23:01:58,730 INFO L130 PetriNetUnfolder]: For 217288/218271 co-relation queries the response was YES. [2020-02-10 23:01:58,758 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 23:01:58,797 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 152 selfloop transitions, 105 changer transitions 0/269 dead transitions. [2020-02-10 23:01:58,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:01:58,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:01:58,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:01:58,798 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:01:58,798 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:01:58,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:01:58,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:01:58,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:01:58,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:01:58,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:01:58,799 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:01:58,799 INFO L178 Difference]: Start difference. First operand has 459 places, 260 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:01:58,803 INFO L206 Difference]: Finished difference. Result has 467 places, 262 transitions [2020-02-10 23:01:58,804 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 23:01:58,804 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 467 places, 262 transitions [2020-02-10 23:01:59,977 INFO L129 PetriNetUnfolder]: 83/891 cut-off events. [2020-02-10 23:01:59,977 INFO L130 PetriNetUnfolder]: For 215054/215283 co-relation queries the response was YES. [2020-02-10 23:02:00,005 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 23:02:00,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 467 places, 262 transitions [2020-02-10 23:02:00,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 467 places, 262 transitions [2020-02-10 23:02:00,043 INFO L479 AbstractCegarLoop]: Abstraction has has 467 places, 262 transitions [2020-02-10 23:02:00,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:02:00,685 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:02:00,685 INFO L130 PetriNetUnfolder]: For 213735/213891 co-relation queries the response was YES. [2020-02-10 23:02:00,685 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:00,685 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:00,686 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 23:02:00,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:00,686 INFO L82 PathProgramCache]: Analyzing trace with hash -2031973388, now seen corresponding path program 51 times [2020-02-10 23:02:00,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:00,686 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110680067] [2020-02-10 23:02:00,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:00,834 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 23:02:00,835 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110680067] [2020-02-10 23:02:00,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:00,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:02:00,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200441132] [2020-02-10 23:02:00,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:02:00,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:00,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:02:00,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:02:00,836 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:02:00,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 262 transitions. Second operand 7 states. [2020-02-10 23:02:00,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:00,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:02:00,837 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:03,028 INFO L129 PetriNetUnfolder]: 84/893 cut-off events. [2020-02-10 23:02:03,028 INFO L130 PetriNetUnfolder]: For 224294/225374 co-relation queries the response was YES. [2020-02-10 23:02:03,054 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 23:02:03,090 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 156 selfloop transitions, 105 changer transitions 0/273 dead transitions. [2020-02-10 23:02:03,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:02:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:02:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:02:03,091 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:02:03,091 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:02:03,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:02:03,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:03,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:02:03,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:02:03,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:02:03,092 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:02:03,092 INFO L178 Difference]: Start difference. First operand has 467 places, 262 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:02:03,097 INFO L206 Difference]: Finished difference. Result has 475 places, 266 transitions [2020-02-10 23:02:03,097 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 23:02:03,097 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 475 places, 266 transitions [2020-02-10 23:02:04,242 INFO L129 PetriNetUnfolder]: 83/890 cut-off events. [2020-02-10 23:02:04,243 INFO L130 PetriNetUnfolder]: For 219773/219929 co-relation queries the response was YES. [2020-02-10 23:02:04,271 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 23:02:04,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 475 places, 266 transitions [2020-02-10 23:02:04,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 475 places, 266 transitions [2020-02-10 23:02:04,309 INFO L479 AbstractCegarLoop]: Abstraction has has 475 places, 266 transitions [2020-02-10 23:02:04,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:02:04,955 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:02:04,955 INFO L130 PetriNetUnfolder]: For 219508/219642 co-relation queries the response was YES. [2020-02-10 23:02:04,955 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:04,955 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:04,955 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 23:02:04,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:04,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1772946776, now seen corresponding path program 52 times [2020-02-10 23:02:04,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:04,956 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046012835] [2020-02-10 23:02:04,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:05,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:05,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046012835] [2020-02-10 23:02:05,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:05,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:02:05,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775423585] [2020-02-10 23:02:05,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:02:05,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:05,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:02:05,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:02:05,133 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:02:05,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 266 transitions. Second operand 7 states. [2020-02-10 23:02:05,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:05,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:02:05,133 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:07,376 INFO L129 PetriNetUnfolder]: 84/892 cut-off events. [2020-02-10 23:02:07,376 INFO L130 PetriNetUnfolder]: For 230236/231314 co-relation queries the response was YES. [2020-02-10 23:02:07,404 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 23:02:07,442 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 156 selfloop transitions, 105 changer transitions 0/273 dead transitions. [2020-02-10 23:02:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:02:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:02:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:02:07,443 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:02:07,443 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:02:07,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:02:07,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:07,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:02:07,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:02:07,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:02:07,444 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:02:07,444 INFO L178 Difference]: Start difference. First operand has 475 places, 266 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:02:07,449 INFO L206 Difference]: Finished difference. Result has 482 places, 266 transitions [2020-02-10 23:02:07,449 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 23:02:07,449 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 482 places, 266 transitions [2020-02-10 23:02:08,623 INFO L129 PetriNetUnfolder]: 83/889 cut-off events. [2020-02-10 23:02:08,623 INFO L130 PetriNetUnfolder]: For 223291/223421 co-relation queries the response was YES. [2020-02-10 23:02:08,652 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 23:02:08,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 482 places, 266 transitions [2020-02-10 23:02:08,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 482 places, 266 transitions [2020-02-10 23:02:08,691 INFO L479 AbstractCegarLoop]: Abstraction has has 482 places, 266 transitions [2020-02-10 23:02:08,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:02:09,335 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:02:09,335 INFO L130 PetriNetUnfolder]: For 223291/223421 co-relation queries the response was YES. [2020-02-10 23:02:09,335 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:09,335 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:09,335 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 23:02:09,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:09,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1032615524, now seen corresponding path program 53 times [2020-02-10 23:02:09,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:09,336 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728760264] [2020-02-10 23:02:09,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:09,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:09,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728760264] [2020-02-10 23:02:09,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:09,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:02:09,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025923059] [2020-02-10 23:02:09,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:02:09,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:09,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:02:09,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:02:09,493 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:02:09,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 266 transitions. Second operand 7 states. [2020-02-10 23:02:09,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:09,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:02:09,493 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:11,716 INFO L129 PetriNetUnfolder]: 84/891 cut-off events. [2020-02-10 23:02:11,716 INFO L130 PetriNetUnfolder]: For 233279/234268 co-relation queries the response was YES. [2020-02-10 23:02:11,745 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 23:02:11,784 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 156 selfloop transitions, 105 changer transitions 0/273 dead transitions. [2020-02-10 23:02:11,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:02:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:02:11,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:02:11,785 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:02:11,785 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:02:11,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:02:11,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:11,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:02:11,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:02:11,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:02:11,786 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:02:11,786 INFO L178 Difference]: Start difference. First operand has 482 places, 266 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:02:11,791 INFO L206 Difference]: Finished difference. Result has 489 places, 266 transitions [2020-02-10 23:02:11,791 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 23:02:11,791 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 489 places, 266 transitions [2020-02-10 23:02:12,958 INFO L129 PetriNetUnfolder]: 83/888 cut-off events. [2020-02-10 23:02:12,958 INFO L130 PetriNetUnfolder]: For 227669/227799 co-relation queries the response was YES. [2020-02-10 23:02:12,988 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 23:02:12,988 INFO L82 GeneralOperation]: Start removeDead. Operand has 489 places, 266 transitions [2020-02-10 23:02:13,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 489 places, 266 transitions [2020-02-10 23:02:13,027 INFO L479 AbstractCegarLoop]: Abstraction has has 489 places, 266 transitions [2020-02-10 23:02:13,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:02:13,771 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:02:13,771 INFO L130 PetriNetUnfolder]: For 228763/228988 co-relation queries the response was YES. [2020-02-10 23:02:13,771 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:13,771 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:13,771 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 23:02:13,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:13,772 INFO L82 PathProgramCache]: Analyzing trace with hash -867301984, now seen corresponding path program 54 times [2020-02-10 23:02:13,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:13,772 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108245381] [2020-02-10 23:02:13,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:13,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108245381] [2020-02-10 23:02:13,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:13,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:02:13,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418855297] [2020-02-10 23:02:13,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:02:13,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:13,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:02:13,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:02:13,925 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:02:13,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 266 transitions. Second operand 7 states. [2020-02-10 23:02:13,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:13,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:02:13,926 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:16,190 INFO L129 PetriNetUnfolder]: 84/890 cut-off events. [2020-02-10 23:02:16,191 INFO L130 PetriNetUnfolder]: For 236696/237614 co-relation queries the response was YES. [2020-02-10 23:02:16,220 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 23:02:16,260 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 153 selfloop transitions, 112 changer transitions 0/277 dead transitions. [2020-02-10 23:02:16,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:02:16,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:02:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:02:16,261 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:02:16,261 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:02:16,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:02:16,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:16,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:02:16,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:02:16,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:02:16,263 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:02:16,263 INFO L178 Difference]: Start difference. First operand has 489 places, 266 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:02:16,268 INFO L206 Difference]: Finished difference. Result has 499 places, 271 transitions [2020-02-10 23:02:16,269 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 23:02:16,269 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 499 places, 271 transitions [2020-02-10 23:02:17,514 INFO L129 PetriNetUnfolder]: 83/887 cut-off events. [2020-02-10 23:02:17,514 INFO L130 PetriNetUnfolder]: For 235715/235950 co-relation queries the response was YES. [2020-02-10 23:02:17,544 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 23:02:17,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 499 places, 271 transitions [2020-02-10 23:02:17,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 499 places, 271 transitions [2020-02-10 23:02:17,582 INFO L479 AbstractCegarLoop]: Abstraction has has 499 places, 271 transitions [2020-02-10 23:02:17,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:02:18,266 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:02:18,266 INFO L130 PetriNetUnfolder]: For 235715/235950 co-relation queries the response was YES. [2020-02-10 23:02:18,266 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:18,266 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:18,267 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 23:02:18,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:18,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1235091198, now seen corresponding path program 55 times [2020-02-10 23:02:18,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:18,267 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423576069] [2020-02-10 23:02:18,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:18,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423576069] [2020-02-10 23:02:18,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:18,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:02:18,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024874612] [2020-02-10 23:02:18,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:02:18,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:18,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:02:18,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:02:18,444 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:02:18,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 271 transitions. Second operand 7 states. [2020-02-10 23:02:18,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:18,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:02:18,444 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:21,111 INFO L129 PetriNetUnfolder]: 84/889 cut-off events. [2020-02-10 23:02:21,111 INFO L130 PetriNetUnfolder]: For 243887/244879 co-relation queries the response was YES. [2020-02-10 23:02:21,141 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 23:02:21,180 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 157 selfloop transitions, 109 changer transitions 0/278 dead transitions. [2020-02-10 23:02:21,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:02:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:02:21,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:02:21,181 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:02:21,181 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:02:21,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:02:21,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:21,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:02:21,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:02:21,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:02:21,182 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:02:21,182 INFO L178 Difference]: Start difference. First operand has 499 places, 271 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:02:21,187 INFO L206 Difference]: Finished difference. Result has 506 places, 271 transitions [2020-02-10 23:02:21,187 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 23:02:21,188 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 506 places, 271 transitions [2020-02-10 23:02:22,382 INFO L129 PetriNetUnfolder]: 83/886 cut-off events. [2020-02-10 23:02:22,382 INFO L130 PetriNetUnfolder]: For 240040/240273 co-relation queries the response was YES. [2020-02-10 23:02:22,413 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 23:02:22,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 506 places, 271 transitions [2020-02-10 23:02:22,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 506 places, 271 transitions [2020-02-10 23:02:22,453 INFO L479 AbstractCegarLoop]: Abstraction has has 506 places, 271 transitions [2020-02-10 23:02:22,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:02:23,152 INFO L129 PetriNetUnfolder]: 83/827 cut-off events. [2020-02-10 23:02:23,152 INFO L130 PetriNetUnfolder]: For 238941/239077 co-relation queries the response was YES. [2020-02-10 23:02:23,152 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:23,152 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:23,152 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 23:02:23,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:23,153 INFO L82 PathProgramCache]: Analyzing trace with hash 300689700, now seen corresponding path program 56 times [2020-02-10 23:02:23,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:23,153 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735901026] [2020-02-10 23:02:23,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:23,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:23,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735901026] [2020-02-10 23:02:23,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:23,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:02:23,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911172934] [2020-02-10 23:02:23,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:02:23,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:23,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:02:23,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:02:23,311 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:02:23,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 271 transitions. Second operand 7 states. [2020-02-10 23:02:23,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:23,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:02:23,311 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:25,654 INFO L129 PetriNetUnfolder]: 84/888 cut-off events. [2020-02-10 23:02:25,655 INFO L130 PetriNetUnfolder]: For 247637/248599 co-relation queries the response was YES. [2020-02-10 23:02:25,685 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 23:02:25,725 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 151 selfloop transitions, 106 changer transitions 5/274 dead transitions. [2020-02-10 23:02:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:02:25,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:02:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:02:25,726 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:02:25,726 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:02:25,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:02:25,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:25,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:02:25,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:02:25,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:02:25,727 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:02:25,727 INFO L178 Difference]: Start difference. First operand has 506 places, 271 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:02:25,734 INFO L206 Difference]: Finished difference. Result has 513 places, 266 transitions [2020-02-10 23:02:25,735 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 23:02:25,735 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 513 places, 266 transitions [2020-02-10 23:02:26,942 INFO L129 PetriNetUnfolder]: 81/867 cut-off events. [2020-02-10 23:02:26,942 INFO L130 PetriNetUnfolder]: For 240408/240544 co-relation queries the response was YES. [2020-02-10 23:02:26,972 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 23:02:26,972 INFO L82 GeneralOperation]: Start removeDead. Operand has 513 places, 266 transitions [2020-02-10 23:02:27,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 511 places, 266 transitions [2020-02-10 23:02:27,012 INFO L479 AbstractCegarLoop]: Abstraction has has 511 places, 266 transitions [2020-02-10 23:02:27,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:02:27,698 INFO L129 PetriNetUnfolder]: 81/809 cut-off events. [2020-02-10 23:02:27,699 INFO L130 PetriNetUnfolder]: For 240408/240544 co-relation queries the response was YES. [2020-02-10 23:02:27,699 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:27,699 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:27,699 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 23:02:27,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:27,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1888350880, now seen corresponding path program 57 times [2020-02-10 23:02:27,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:27,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565692792] [2020-02-10 23:02:27,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:27,890 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565692792] [2020-02-10 23:02:27,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:27,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:02:27,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201125837] [2020-02-10 23:02:27,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:02:27,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:27,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:02:27,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:02:27,891 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:02:27,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 266 transitions. Second operand 7 states. [2020-02-10 23:02:27,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:27,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:02:27,892 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:30,218 INFO L129 PetriNetUnfolder]: 82/869 cut-off events. [2020-02-10 23:02:30,218 INFO L130 PetriNetUnfolder]: For 249128/250090 co-relation queries the response was YES. [2020-02-10 23:02:30,248 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 23:02:30,383 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 151 selfloop transitions, 104 changer transitions 2/269 dead transitions. [2020-02-10 23:02:30,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:02:30,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:02:30,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:02:30,384 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:02:30,384 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:02:30,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:02:30,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:30,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:02:30,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:02:30,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:02:30,385 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:02:30,385 INFO L178 Difference]: Start difference. First operand has 511 places, 266 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:02:30,390 INFO L206 Difference]: Finished difference. Result has 518 places, 264 transitions [2020-02-10 23:02:30,391 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 23:02:30,391 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 518 places, 264 transitions [2020-02-10 23:02:31,565 INFO L129 PetriNetUnfolder]: 80/857 cut-off events. [2020-02-10 23:02:31,566 INFO L130 PetriNetUnfolder]: For 243820/243956 co-relation queries the response was YES. [2020-02-10 23:02:31,595 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 23:02:31,596 INFO L82 GeneralOperation]: Start removeDead. Operand has 518 places, 264 transitions [2020-02-10 23:02:31,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 517 places, 264 transitions [2020-02-10 23:02:31,634 INFO L479 AbstractCegarLoop]: Abstraction has has 517 places, 264 transitions [2020-02-10 23:02:31,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:02:32,313 INFO L129 PetriNetUnfolder]: 80/800 cut-off events. [2020-02-10 23:02:32,313 INFO L130 PetriNetUnfolder]: For 243820/243956 co-relation queries the response was YES. [2020-02-10 23:02:32,314 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:32,314 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:32,314 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 23:02:32,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:32,314 INFO L82 PathProgramCache]: Analyzing trace with hash 2028906104, now seen corresponding path program 58 times [2020-02-10 23:02:32,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:32,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573081236] [2020-02-10 23:02:32,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:32,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:32,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573081236] [2020-02-10 23:02:32,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:32,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:02:32,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118091895] [2020-02-10 23:02:32,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:02:32,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:32,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:02:32,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:02:32,454 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:02:32,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 264 transitions. Second operand 7 states. [2020-02-10 23:02:32,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:32,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:02:32,455 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:34,787 INFO L129 PetriNetUnfolder]: 81/859 cut-off events. [2020-02-10 23:02:34,787 INFO L130 PetriNetUnfolder]: For 250971/251718 co-relation queries the response was YES. [2020-02-10 23:02:34,816 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 23:02:34,853 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 153 selfloop transitions, 104 changer transitions 0/269 dead transitions. [2020-02-10 23:02:34,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:02:34,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:02:34,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:02:34,854 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:02:34,854 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:02:34,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:02:34,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:34,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:02:34,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:02:34,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:02:34,856 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:02:34,856 INFO L178 Difference]: Start difference. First operand has 517 places, 264 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:02:34,860 INFO L206 Difference]: Finished difference. Result has 524 places, 264 transitions [2020-02-10 23:02:34,861 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 23:02:34,861 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 524 places, 264 transitions [2020-02-10 23:02:36,035 INFO L129 PetriNetUnfolder]: 80/856 cut-off events. [2020-02-10 23:02:36,035 INFO L130 PetriNetUnfolder]: For 248219/248354 co-relation queries the response was YES. [2020-02-10 23:02:36,065 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 23:02:36,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 524 places, 264 transitions [2020-02-10 23:02:36,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 524 places, 264 transitions [2020-02-10 23:02:36,104 INFO L479 AbstractCegarLoop]: Abstraction has has 524 places, 264 transitions [2020-02-10 23:02:36,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:02:36,795 INFO L129 PetriNetUnfolder]: 80/800 cut-off events. [2020-02-10 23:02:36,795 INFO L130 PetriNetUnfolder]: For 248219/248354 co-relation queries the response was YES. [2020-02-10 23:02:36,795 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:36,795 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:36,796 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 23:02:36,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:36,796 INFO L82 PathProgramCache]: Analyzing trace with hash -582592732, now seen corresponding path program 59 times [2020-02-10 23:02:36,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:36,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364183942] [2020-02-10 23:02:36,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:36,955 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 23:02:36,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364183942] [2020-02-10 23:02:36,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:36,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:02:36,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20349276] [2020-02-10 23:02:36,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:02:36,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:36,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:02:36,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:02:36,956 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:02:36,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 264 transitions. Second operand 7 states. [2020-02-10 23:02:36,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:36,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:02:36,957 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:39,285 INFO L129 PetriNetUnfolder]: 81/858 cut-off events. [2020-02-10 23:02:39,285 INFO L130 PetriNetUnfolder]: For 255258/255993 co-relation queries the response was YES. [2020-02-10 23:02:39,315 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 23:02:39,355 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 151 selfloop transitions, 100 changer transitions 3/266 dead transitions. [2020-02-10 23:02:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:02:39,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:02:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:02:39,356 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:02:39,357 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:02:39,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:02:39,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:39,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:02:39,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:02:39,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:02:39,358 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:02:39,358 INFO L178 Difference]: Start difference. First operand has 524 places, 264 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:02:39,364 INFO L206 Difference]: Finished difference. Result has 531 places, 261 transitions [2020-02-10 23:02:39,364 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 23:02:39,364 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 531 places, 261 transitions [2020-02-10 23:02:40,567 INFO L129 PetriNetUnfolder]: 79/845 cut-off events. [2020-02-10 23:02:40,567 INFO L130 PetriNetUnfolder]: For 250822/250957 co-relation queries the response was YES. [2020-02-10 23:02:40,592 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 23:02:40,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 531 places, 261 transitions [2020-02-10 23:02:40,626 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 530 places, 261 transitions [2020-02-10 23:02:40,627 INFO L479 AbstractCegarLoop]: Abstraction has has 530 places, 261 transitions [2020-02-10 23:02:40,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:02:41,311 INFO L129 PetriNetUnfolder]: 79/790 cut-off events. [2020-02-10 23:02:41,311 INFO L130 PetriNetUnfolder]: For 250018/250118 co-relation queries the response was YES. [2020-02-10 23:02:41,312 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:41,312 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:41,312 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 23:02:41,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:41,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1145064548, now seen corresponding path program 60 times [2020-02-10 23:02:41,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:41,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752737540] [2020-02-10 23:02:41,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:41,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752737540] [2020-02-10 23:02:41,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:41,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:02:41,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712609639] [2020-02-10 23:02:41,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:02:41,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:41,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:02:41,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:02:41,465 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:02:41,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 261 transitions. Second operand 7 states. [2020-02-10 23:02:41,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:41,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:02:41,465 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:43,868 INFO L129 PetriNetUnfolder]: 80/847 cut-off events. [2020-02-10 23:02:43,868 INFO L130 PetriNetUnfolder]: For 257913/258648 co-relation queries the response was YES. [2020-02-10 23:02:43,894 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 23:02:43,929 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 107 changer transitions 0/269 dead transitions. [2020-02-10 23:02:43,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:02:43,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:02:43,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:02:43,930 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:02:43,930 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:02:43,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:02:43,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:43,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:02:43,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:02:43,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:02:43,931 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:02:43,931 INFO L178 Difference]: Start difference. First operand has 530 places, 261 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:02:43,936 INFO L206 Difference]: Finished difference. Result has 539 places, 264 transitions [2020-02-10 23:02:43,937 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 23:02:43,937 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 539 places, 264 transitions [2020-02-10 23:02:45,292 INFO L129 PetriNetUnfolder]: 79/844 cut-off events. [2020-02-10 23:02:45,292 INFO L130 PetriNetUnfolder]: For 256299/256399 co-relation queries the response was YES. [2020-02-10 23:02:45,322 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 23:02:45,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 539 places, 264 transitions [2020-02-10 23:02:45,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 539 places, 264 transitions [2020-02-10 23:02:45,362 INFO L479 AbstractCegarLoop]: Abstraction has has 539 places, 264 transitions [2020-02-10 23:02:45,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:02:46,066 INFO L129 PetriNetUnfolder]: 79/790 cut-off events. [2020-02-10 23:02:46,066 INFO L130 PetriNetUnfolder]: For 256299/256399 co-relation queries the response was YES. [2020-02-10 23:02:46,066 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:46,067 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:46,067 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 23:02:46,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:46,067 INFO L82 PathProgramCache]: Analyzing trace with hash -177737572, now seen corresponding path program 61 times [2020-02-10 23:02:46,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:46,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165356797] [2020-02-10 23:02:46,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:46,229 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 23:02:46,230 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165356797] [2020-02-10 23:02:46,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:46,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:02:46,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794041071] [2020-02-10 23:02:46,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:02:46,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:46,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:02:46,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:02:46,232 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:02:46,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 264 transitions. Second operand 7 states. [2020-02-10 23:02:46,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:46,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:02:46,233 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:48,587 INFO L129 PetriNetUnfolder]: 80/846 cut-off events. [2020-02-10 23:02:48,588 INFO L130 PetriNetUnfolder]: For 264694/265439 co-relation queries the response was YES. [2020-02-10 23:02:48,617 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 23:02:48,656 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 102 changer transitions 3/267 dead transitions. [2020-02-10 23:02:48,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:02:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:02:48,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:02:48,657 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:02:48,657 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:02:48,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:02:48,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:48,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:02:48,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:02:48,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:02:48,659 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:02:48,659 INFO L178 Difference]: Start difference. First operand has 539 places, 264 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:02:48,664 INFO L206 Difference]: Finished difference. Result has 546 places, 261 transitions [2020-02-10 23:02:48,665 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 23:02:48,665 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 546 places, 261 transitions [2020-02-10 23:02:49,849 INFO L129 PetriNetUnfolder]: 78/833 cut-off events. [2020-02-10 23:02:49,850 INFO L130 PetriNetUnfolder]: For 258790/258890 co-relation queries the response was YES. [2020-02-10 23:02:49,881 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 23:02:49,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 546 places, 261 transitions [2020-02-10 23:02:49,924 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 545 places, 261 transitions [2020-02-10 23:02:49,924 INFO L479 AbstractCegarLoop]: Abstraction has has 545 places, 261 transitions [2020-02-10 23:02:49,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:02:50,639 INFO L129 PetriNetUnfolder]: 78/780 cut-off events. [2020-02-10 23:02:50,639 INFO L130 PetriNetUnfolder]: For 259436/259567 co-relation queries the response was YES. [2020-02-10 23:02:50,639 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:50,639 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:50,640 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 23:02:50,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:50,640 INFO L82 PathProgramCache]: Analyzing trace with hash 64082826, now seen corresponding path program 62 times [2020-02-10 23:02:50,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:50,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101935091] [2020-02-10 23:02:50,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:50,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101935091] [2020-02-10 23:02:50,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:50,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:02:50,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521037389] [2020-02-10 23:02:50,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:02:50,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:50,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:02:50,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:02:50,825 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:02:50,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 261 transitions. Second operand 7 states. [2020-02-10 23:02:50,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:50,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:02:50,826 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:53,179 INFO L129 PetriNetUnfolder]: 79/835 cut-off events. [2020-02-10 23:02:53,180 INFO L130 PetriNetUnfolder]: For 267302/268047 co-relation queries the response was YES. [2020-02-10 23:02:53,211 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 23:02:53,251 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 104 changer transitions 0/266 dead transitions. [2020-02-10 23:02:53,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:02:53,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:02:53,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:02:53,252 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:02:53,252 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:02:53,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:02:53,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:53,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:02:53,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:02:53,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:02:53,253 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:02:53,253 INFO L178 Difference]: Start difference. First operand has 545 places, 261 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:02:53,258 INFO L206 Difference]: Finished difference. Result has 552 places, 261 transitions [2020-02-10 23:02:53,259 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 23:02:53,259 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 552 places, 261 transitions [2020-02-10 23:02:54,370 INFO L129 PetriNetUnfolder]: 78/832 cut-off events. [2020-02-10 23:02:54,370 INFO L130 PetriNetUnfolder]: For 263823/263958 co-relation queries the response was YES. [2020-02-10 23:02:54,396 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 23:02:54,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 552 places, 261 transitions [2020-02-10 23:02:54,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 552 places, 261 transitions [2020-02-10 23:02:54,430 INFO L479 AbstractCegarLoop]: Abstraction has has 552 places, 261 transitions [2020-02-10 23:02:54,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:02:55,137 INFO L129 PetriNetUnfolder]: 78/780 cut-off events. [2020-02-10 23:02:55,137 INFO L130 PetriNetUnfolder]: For 263823/263958 co-relation queries the response was YES. [2020-02-10 23:02:55,137 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:55,138 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:55,138 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 23:02:55,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:55,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1275901088, now seen corresponding path program 63 times [2020-02-10 23:02:55,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:55,138 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083304948] [2020-02-10 23:02:55,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:55,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083304948] [2020-02-10 23:02:55,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:55,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:02:55,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123608054] [2020-02-10 23:02:55,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:02:55,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:55,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:02:55,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:02:55,297 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:02:55,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 261 transitions. Second operand 7 states. [2020-02-10 23:02:55,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:55,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:02:55,298 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:02:57,677 INFO L129 PetriNetUnfolder]: 79/834 cut-off events. [2020-02-10 23:02:57,678 INFO L130 PetriNetUnfolder]: For 271737/272501 co-relation queries the response was YES. [2020-02-10 23:02:57,705 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 23:02:57,740 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 147 selfloop transitions, 109 changer transitions 0/268 dead transitions. [2020-02-10 23:02:57,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:02:57,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:02:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:02:57,742 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:02:57,742 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:02:57,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:02:57,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:02:57,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:02:57,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:02:57,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:02:57,743 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:02:57,743 INFO L178 Difference]: Start difference. First operand has 552 places, 261 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:02:57,749 INFO L206 Difference]: Finished difference. Result has 560 places, 263 transitions [2020-02-10 23:02:57,749 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 23:02:57,749 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 560 places, 263 transitions [2020-02-10 23:02:58,984 INFO L129 PetriNetUnfolder]: 78/831 cut-off events. [2020-02-10 23:02:58,984 INFO L130 PetriNetUnfolder]: For 269385/269520 co-relation queries the response was YES. [2020-02-10 23:02:59,016 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 23:02:59,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 560 places, 263 transitions [2020-02-10 23:02:59,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 560 places, 263 transitions [2020-02-10 23:02:59,056 INFO L479 AbstractCegarLoop]: Abstraction has has 560 places, 263 transitions [2020-02-10 23:02:59,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:02:59,780 INFO L129 PetriNetUnfolder]: 78/780 cut-off events. [2020-02-10 23:02:59,780 INFO L130 PetriNetUnfolder]: For 269385/269520 co-relation queries the response was YES. [2020-02-10 23:02:59,780 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:02:59,780 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:02:59,780 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 23:02:59,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:02:59,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1866915970, now seen corresponding path program 64 times [2020-02-10 23:02:59,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:02:59,781 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142574160] [2020-02-10 23:02:59,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:02:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:02:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:02:59,919 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142574160] [2020-02-10 23:02:59,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:02:59,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:02:59,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340557606] [2020-02-10 23:02:59,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:02:59,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:02:59,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:02:59,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:02:59,921 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:02:59,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 263 transitions. Second operand 7 states. [2020-02-10 23:02:59,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:02:59,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:02:59,922 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:02,299 INFO L129 PetriNetUnfolder]: 79/833 cut-off events. [2020-02-10 23:03:02,299 INFO L130 PetriNetUnfolder]: For 276805/277488 co-relation queries the response was YES. [2020-02-10 23:03:02,330 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 23:03:02,370 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 151 selfloop transitions, 105 changer transitions 0/268 dead transitions. [2020-02-10 23:03:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:03:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:03:02,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:03:02,371 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:03:02,371 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:03:02,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:03:02,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:02,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:03:02,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:03:02,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:03:02,372 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:03:02,372 INFO L178 Difference]: Start difference. First operand has 560 places, 263 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:03:02,377 INFO L206 Difference]: Finished difference. Result has 567 places, 263 transitions [2020-02-10 23:03:02,377 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 23:03:02,378 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 567 places, 263 transitions [2020-02-10 23:03:03,583 INFO L129 PetriNetUnfolder]: 78/830 cut-off events. [2020-02-10 23:03:03,584 INFO L130 PetriNetUnfolder]: For 273584/273719 co-relation queries the response was YES. [2020-02-10 23:03:03,615 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 23:03:03,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 567 places, 263 transitions [2020-02-10 23:03:03,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 567 places, 263 transitions [2020-02-10 23:03:03,655 INFO L479 AbstractCegarLoop]: Abstraction has has 567 places, 263 transitions [2020-02-10 23:03:03,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:03:04,392 INFO L129 PetriNetUnfolder]: 78/780 cut-off events. [2020-02-10 23:03:04,393 INFO L130 PetriNetUnfolder]: For 273584/273719 co-relation queries the response was YES. [2020-02-10 23:03:04,393 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:04,393 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:04,393 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 23:03:04,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:04,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1336744840, now seen corresponding path program 65 times [2020-02-10 23:03:04,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:04,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621198661] [2020-02-10 23:03:04,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:04,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621198661] [2020-02-10 23:03:04,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:04,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:03:04,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281520178] [2020-02-10 23:03:04,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:03:04,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:04,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:03:04,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:03:04,550 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:03:04,550 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 263 transitions. Second operand 7 states. [2020-02-10 23:03:04,550 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:04,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:03:04,551 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:06,999 INFO L129 PetriNetUnfolder]: 79/832 cut-off events. [2020-02-10 23:03:06,999 INFO L130 PetriNetUnfolder]: For 280976/281664 co-relation queries the response was YES. [2020-02-10 23:03:07,031 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 23:03:07,072 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 148 selfloop transitions, 108 changer transitions 0/268 dead transitions. [2020-02-10 23:03:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:03:07,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:03:07,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:03:07,073 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:03:07,073 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:03:07,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:03:07,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:07,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:03:07,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:03:07,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:03:07,074 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:03:07,074 INFO L178 Difference]: Start difference. First operand has 567 places, 263 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:03:07,079 INFO L206 Difference]: Finished difference. Result has 574 places, 263 transitions [2020-02-10 23:03:07,079 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 23:03:07,080 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 574 places, 263 transitions [2020-02-10 23:03:08,237 INFO L129 PetriNetUnfolder]: 78/829 cut-off events. [2020-02-10 23:03:08,238 INFO L130 PetriNetUnfolder]: For 277648/277783 co-relation queries the response was YES. [2020-02-10 23:03:08,267 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 23:03:08,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 574 places, 263 transitions [2020-02-10 23:03:08,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 574 places, 263 transitions [2020-02-10 23:03:08,305 INFO L479 AbstractCegarLoop]: Abstraction has has 574 places, 263 transitions [2020-02-10 23:03:08,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:03:09,039 INFO L129 PetriNetUnfolder]: 78/780 cut-off events. [2020-02-10 23:03:09,039 INFO L130 PetriNetUnfolder]: For 277648/277783 co-relation queries the response was YES. [2020-02-10 23:03:09,039 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:09,039 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:09,039 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 23:03:09,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:09,039 INFO L82 PathProgramCache]: Analyzing trace with hash 318568842, now seen corresponding path program 66 times [2020-02-10 23:03:09,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:09,040 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879601967] [2020-02-10 23:03:09,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:09,168 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879601967] [2020-02-10 23:03:09,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:09,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:03:09,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138650534] [2020-02-10 23:03:09,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:03:09,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:09,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:03:09,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:03:09,170 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:03:09,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 263 transitions. Second operand 7 states. [2020-02-10 23:03:09,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:09,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:03:09,170 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:11,630 INFO L129 PetriNetUnfolder]: 79/831 cut-off events. [2020-02-10 23:03:11,630 INFO L130 PetriNetUnfolder]: For 284642/285310 co-relation queries the response was YES. [2020-02-10 23:03:11,660 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 23:03:11,698 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 106 changer transitions 0/268 dead transitions. [2020-02-10 23:03:11,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:03:11,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:03:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:03:11,699 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:03:11,699 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:03:11,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:03:11,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:11,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:03:11,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:03:11,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:03:11,700 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:03:11,701 INFO L178 Difference]: Start difference. First operand has 574 places, 263 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:03:11,708 INFO L206 Difference]: Finished difference. Result has 581 places, 263 transitions [2020-02-10 23:03:11,708 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 23:03:11,708 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 581 places, 263 transitions [2020-02-10 23:03:12,916 INFO L129 PetriNetUnfolder]: 78/828 cut-off events. [2020-02-10 23:03:12,916 INFO L130 PetriNetUnfolder]: For 281764/281903 co-relation queries the response was YES. [2020-02-10 23:03:12,948 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 23:03:12,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 581 places, 263 transitions [2020-02-10 23:03:12,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 581 places, 263 transitions [2020-02-10 23:03:12,988 INFO L479 AbstractCegarLoop]: Abstraction has has 581 places, 263 transitions [2020-02-10 23:03:12,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:03:13,733 INFO L129 PetriNetUnfolder]: 78/780 cut-off events. [2020-02-10 23:03:13,733 INFO L130 PetriNetUnfolder]: For 281764/281903 co-relation queries the response was YES. [2020-02-10 23:03:13,733 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:13,733 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:13,733 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 23:03:13,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:13,733 INFO L82 PathProgramCache]: Analyzing trace with hash 196670724, now seen corresponding path program 67 times [2020-02-10 23:03:13,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:13,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996619190] [2020-02-10 23:03:13,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:13,890 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996619190] [2020-02-10 23:03:13,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:13,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:03:13,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795475846] [2020-02-10 23:03:13,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:03:13,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:13,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:03:13,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:03:13,892 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:03:13,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 263 transitions. Second operand 7 states. [2020-02-10 23:03:13,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:13,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:03:13,893 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:16,933 INFO L129 PetriNetUnfolder]: 79/871 cut-off events. [2020-02-10 23:03:16,933 INFO L130 PetriNetUnfolder]: For 314665/315503 co-relation queries the response was YES. [2020-02-10 23:03:16,967 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 23:03:17,011 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 163 selfloop transitions, 108 changer transitions 0/283 dead transitions. [2020-02-10 23:03:17,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:03:17,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:03:17,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:03:17,012 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:03:17,012 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:03:17,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:03:17,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:17,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:03:17,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:03:17,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:03:17,013 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:03:17,013 INFO L178 Difference]: Start difference. First operand has 581 places, 263 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:03:17,018 INFO L206 Difference]: Finished difference. Result has 592 places, 274 transitions [2020-02-10 23:03:17,019 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 23:03:17,019 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 592 places, 274 transitions [2020-02-10 23:03:18,307 INFO L129 PetriNetUnfolder]: 79/871 cut-off events. [2020-02-10 23:03:18,307 INFO L130 PetriNetUnfolder]: For 315732/315952 co-relation queries the response was YES. [2020-02-10 23:03:18,337 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 23:03:18,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 592 places, 274 transitions [2020-02-10 23:03:18,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 592 places, 274 transitions [2020-02-10 23:03:18,375 INFO L479 AbstractCegarLoop]: Abstraction has has 592 places, 274 transitions [2020-02-10 23:03:18,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:03:19,199 INFO L129 PetriNetUnfolder]: 79/818 cut-off events. [2020-02-10 23:03:19,199 INFO L130 PetriNetUnfolder]: For 315732/315952 co-relation queries the response was YES. [2020-02-10 23:03:19,199 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:19,199 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:19,199 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 23:03:19,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:19,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1781615786, now seen corresponding path program 68 times [2020-02-10 23:03:19,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:19,200 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084178642] [2020-02-10 23:03:19,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:19,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084178642] [2020-02-10 23:03:19,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:19,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:03:19,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627629481] [2020-02-10 23:03:19,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:03:19,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:19,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:03:19,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:03:19,358 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:03:19,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 274 transitions. Second operand 7 states. [2020-02-10 23:03:19,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:19,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:03:19,358 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:22,111 INFO L129 PetriNetUnfolder]: 79/870 cut-off events. [2020-02-10 23:03:22,112 INFO L130 PetriNetUnfolder]: For 323520/324326 co-relation queries the response was YES. [2020-02-10 23:03:22,144 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 23:03:22,185 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 159 selfloop transitions, 114 changer transitions 0/285 dead transitions. [2020-02-10 23:03:22,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:03:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:03:22,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:03:22,186 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:03:22,186 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:03:22,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:03:22,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:22,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:03:22,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:03:22,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:03:22,187 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:03:22,187 INFO L178 Difference]: Start difference. First operand has 592 places, 274 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:03:22,193 INFO L206 Difference]: Finished difference. Result has 600 places, 276 transitions [2020-02-10 23:03:22,193 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 23:03:22,194 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 600 places, 276 transitions [2020-02-10 23:03:23,606 INFO L129 PetriNetUnfolder]: 79/870 cut-off events. [2020-02-10 23:03:23,606 INFO L130 PetriNetUnfolder]: For 321939/322160 co-relation queries the response was YES. [2020-02-10 23:03:23,641 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 23:03:23,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 600 places, 276 transitions [2020-02-10 23:03:23,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 600 places, 276 transitions [2020-02-10 23:03:23,685 INFO L479 AbstractCegarLoop]: Abstraction has has 600 places, 276 transitions [2020-02-10 23:03:23,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:03:24,531 INFO L129 PetriNetUnfolder]: 79/818 cut-off events. [2020-02-10 23:03:24,531 INFO L130 PetriNetUnfolder]: For 323335/323670 co-relation queries the response was YES. [2020-02-10 23:03:24,531 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:24,531 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:24,531 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 23:03:24,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:24,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1657890990, now seen corresponding path program 69 times [2020-02-10 23:03:24,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:24,532 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772184997] [2020-02-10 23:03:24,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:24,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772184997] [2020-02-10 23:03:24,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:24,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:03:24,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892346563] [2020-02-10 23:03:24,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:03:24,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:24,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:03:24,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:03:24,714 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:03:24,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 276 transitions. Second operand 7 states. [2020-02-10 23:03:24,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:24,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:03:24,715 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:27,534 INFO L129 PetriNetUnfolder]: 79/869 cut-off events. [2020-02-10 23:03:27,534 INFO L130 PetriNetUnfolder]: For 329000/329799 co-relation queries the response was YES. [2020-02-10 23:03:27,570 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 23:03:27,614 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 154 selfloop transitions, 110 changer transitions 3/279 dead transitions. [2020-02-10 23:03:27,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:03:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:03:27,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:03:27,615 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:03:27,615 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:03:27,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:03:27,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:27,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:03:27,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:03:27,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:03:27,616 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:03:27,617 INFO L178 Difference]: Start difference. First operand has 600 places, 276 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:03:27,622 INFO L206 Difference]: Finished difference. Result has 607 places, 273 transitions [2020-02-10 23:03:27,622 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 23:03:27,623 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 607 places, 273 transitions [2020-02-10 23:03:28,924 INFO L129 PetriNetUnfolder]: 78/859 cut-off events. [2020-02-10 23:03:28,925 INFO L130 PetriNetUnfolder]: For 325902/326241 co-relation queries the response was YES. [2020-02-10 23:03:28,958 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 23:03:28,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 607 places, 273 transitions [2020-02-10 23:03:28,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 606 places, 273 transitions [2020-02-10 23:03:28,998 INFO L479 AbstractCegarLoop]: Abstraction has has 606 places, 273 transitions [2020-02-10 23:03:28,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:03:29,829 INFO L129 PetriNetUnfolder]: 78/808 cut-off events. [2020-02-10 23:03:29,829 INFO L130 PetriNetUnfolder]: For 325902/326241 co-relation queries the response was YES. [2020-02-10 23:03:29,829 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:29,830 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:29,830 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 23:03:29,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:29,830 INFO L82 PathProgramCache]: Analyzing trace with hash 805854258, now seen corresponding path program 70 times [2020-02-10 23:03:29,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:29,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713266106] [2020-02-10 23:03:29,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:29,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713266106] [2020-02-10 23:03:29,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:29,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:03:29,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234828073] [2020-02-10 23:03:29,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:03:29,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:29,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:03:29,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:03:29,982 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:03:29,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 273 transitions. Second operand 7 states. [2020-02-10 23:03:29,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:29,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:03:29,983 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:32,780 INFO L129 PetriNetUnfolder]: 78/858 cut-off events. [2020-02-10 23:03:32,781 INFO L130 PetriNetUnfolder]: For 331691/332511 co-relation queries the response was YES. [2020-02-10 23:03:32,815 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 23:03:32,856 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 149 selfloop transitions, 115 changer transitions 0/276 dead transitions. [2020-02-10 23:03:32,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:03:32,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:03:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:03:32,857 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:03:32,857 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:03:32,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:03:32,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:32,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:03:32,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:03:32,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:03:32,859 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:03:32,859 INFO L178 Difference]: Start difference. First operand has 606 places, 273 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:03:32,864 INFO L206 Difference]: Finished difference. Result has 613 places, 273 transitions [2020-02-10 23:03:32,865 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 23:03:32,865 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 613 places, 273 transitions [2020-02-10 23:03:34,249 INFO L129 PetriNetUnfolder]: 78/858 cut-off events. [2020-02-10 23:03:34,249 INFO L130 PetriNetUnfolder]: For 330126/330455 co-relation queries the response was YES. [2020-02-10 23:03:34,284 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 23:03:34,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 613 places, 273 transitions [2020-02-10 23:03:34,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 613 places, 273 transitions [2020-02-10 23:03:34,328 INFO L479 AbstractCegarLoop]: Abstraction has has 613 places, 273 transitions [2020-02-10 23:03:34,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:03:35,238 INFO L129 PetriNetUnfolder]: 78/808 cut-off events. [2020-02-10 23:03:35,239 INFO L130 PetriNetUnfolder]: For 330126/330455 co-relation queries the response was YES. [2020-02-10 23:03:35,239 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:35,239 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:35,239 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 23:03:35,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:35,239 INFO L82 PathProgramCache]: Analyzing trace with hash 884914156, now seen corresponding path program 71 times [2020-02-10 23:03:35,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:35,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136155006] [2020-02-10 23:03:35,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:35,391 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 23:03:35,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136155006] [2020-02-10 23:03:35,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:35,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:03:35,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880026388] [2020-02-10 23:03:35,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:03:35,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:35,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:03:35,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:03:35,394 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:03:35,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 273 transitions. Second operand 7 states. [2020-02-10 23:03:35,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:35,395 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:03:35,395 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:38,205 INFO L129 PetriNetUnfolder]: 78/857 cut-off events. [2020-02-10 23:03:38,206 INFO L130 PetriNetUnfolder]: For 336367/337189 co-relation queries the response was YES. [2020-02-10 23:03:38,241 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 23:03:38,286 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 161 selfloop transitions, 109 changer transitions 0/282 dead transitions. [2020-02-10 23:03:38,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:03:38,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:03:38,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:03:38,287 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:03:38,287 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:03:38,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:03:38,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:38,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:03:38,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:03:38,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:03:38,288 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:03:38,288 INFO L178 Difference]: Start difference. First operand has 613 places, 273 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:03:38,297 INFO L206 Difference]: Finished difference. Result has 622 places, 278 transitions [2020-02-10 23:03:38,297 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 23:03:38,298 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 622 places, 278 transitions [2020-02-10 23:03:39,673 INFO L129 PetriNetUnfolder]: 78/857 cut-off events. [2020-02-10 23:03:39,673 INFO L130 PetriNetUnfolder]: For 336766/337105 co-relation queries the response was YES. [2020-02-10 23:03:39,709 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 23:03:39,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 622 places, 278 transitions [2020-02-10 23:03:39,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 622 places, 278 transitions [2020-02-10 23:03:39,753 INFO L479 AbstractCegarLoop]: Abstraction has has 622 places, 278 transitions [2020-02-10 23:03:39,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:03:40,643 INFO L129 PetriNetUnfolder]: 78/808 cut-off events. [2020-02-10 23:03:40,644 INFO L130 PetriNetUnfolder]: For 336766/337105 co-relation queries the response was YES. [2020-02-10 23:03:40,644 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:40,644 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:40,644 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 23:03:40,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:40,644 INFO L82 PathProgramCache]: Analyzing trace with hash -216920578, now seen corresponding path program 72 times [2020-02-10 23:03:40,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:40,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069334687] [2020-02-10 23:03:40,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:40,813 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069334687] [2020-02-10 23:03:40,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:40,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:03:40,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056799636] [2020-02-10 23:03:40,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:03:40,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:40,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:03:40,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:03:40,815 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:03:40,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 278 transitions. Second operand 7 states. [2020-02-10 23:03:40,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:40,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:03:40,816 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:43,631 INFO L129 PetriNetUnfolder]: 78/856 cut-off events. [2020-02-10 23:03:43,632 INFO L130 PetriNetUnfolder]: For 343083/343955 co-relation queries the response was YES. [2020-02-10 23:03:43,666 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 23:03:43,709 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 119 changer transitions 0/281 dead transitions. [2020-02-10 23:03:43,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:03:43,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:03:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:03:43,711 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:03:43,711 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:03:43,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:03:43,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:43,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:03:43,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:03:43,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:03:43,712 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:03:43,713 INFO L178 Difference]: Start difference. First operand has 622 places, 278 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:03:43,720 INFO L206 Difference]: Finished difference. Result has 629 places, 278 transitions [2020-02-10 23:03:43,720 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 23:03:43,720 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 629 places, 278 transitions [2020-02-10 23:03:45,115 INFO L129 PetriNetUnfolder]: 78/856 cut-off events. [2020-02-10 23:03:45,115 INFO L130 PetriNetUnfolder]: For 341587/341926 co-relation queries the response was YES. [2020-02-10 23:03:45,152 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 23:03:45,152 INFO L82 GeneralOperation]: Start removeDead. Operand has 629 places, 278 transitions [2020-02-10 23:03:45,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 629 places, 278 transitions [2020-02-10 23:03:45,197 INFO L479 AbstractCegarLoop]: Abstraction has has 629 places, 278 transitions [2020-02-10 23:03:45,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:03:46,042 INFO L129 PetriNetUnfolder]: 78/808 cut-off events. [2020-02-10 23:03:46,042 INFO L130 PetriNetUnfolder]: For 341436/341706 co-relation queries the response was YES. [2020-02-10 23:03:46,043 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:46,043 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:46,043 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 23:03:46,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:46,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1978172896, now seen corresponding path program 73 times [2020-02-10 23:03:46,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:46,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290476762] [2020-02-10 23:03:46,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:46,233 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 23:03:46,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290476762] [2020-02-10 23:03:46,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:46,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:03:46,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641395298] [2020-02-10 23:03:46,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:03:46,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:46,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:03:46,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:03:46,235 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:03:46,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 278 transitions. Second operand 7 states. [2020-02-10 23:03:46,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:46,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:03:46,235 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:49,097 INFO L129 PetriNetUnfolder]: 78/855 cut-off events. [2020-02-10 23:03:49,097 INFO L130 PetriNetUnfolder]: For 346101/346570 co-relation queries the response was YES. [2020-02-10 23:03:49,130 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 23:03:49,171 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 159 selfloop transitions, 112 changer transitions 0/283 dead transitions. [2020-02-10 23:03:49,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:03:49,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:03:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:03:49,172 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:03:49,172 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:03:49,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:03:49,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:49,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:03:49,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:03:49,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:03:49,174 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:03:49,174 INFO L178 Difference]: Start difference. First operand has 629 places, 278 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:03:49,182 INFO L206 Difference]: Finished difference. Result has 637 places, 279 transitions [2020-02-10 23:03:49,183 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 23:03:49,183 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 637 places, 279 transitions [2020-02-10 23:03:50,610 INFO L129 PetriNetUnfolder]: 78/855 cut-off events. [2020-02-10 23:03:50,610 INFO L130 PetriNetUnfolder]: For 346485/346751 co-relation queries the response was YES. [2020-02-10 23:03:50,646 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 23:03:50,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 637 places, 279 transitions [2020-02-10 23:03:50,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 637 places, 279 transitions [2020-02-10 23:03:50,691 INFO L479 AbstractCegarLoop]: Abstraction has has 637 places, 279 transitions [2020-02-10 23:03:50,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:03:51,592 INFO L129 PetriNetUnfolder]: 78/808 cut-off events. [2020-02-10 23:03:51,592 INFO L130 PetriNetUnfolder]: For 347380/347591 co-relation queries the response was YES. [2020-02-10 23:03:51,592 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:51,592 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:51,592 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 23:03:51,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:51,593 INFO L82 PathProgramCache]: Analyzing trace with hash -962489518, now seen corresponding path program 74 times [2020-02-10 23:03:51,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:51,593 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221640364] [2020-02-10 23:03:51,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:51,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:51,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221640364] [2020-02-10 23:03:51,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:51,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:03:51,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555240495] [2020-02-10 23:03:51,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:03:51,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:51,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:03:51,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:03:51,747 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:03:51,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 279 transitions. Second operand 7 states. [2020-02-10 23:03:51,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:51,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:03:51,747 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:03:54,657 INFO L129 PetriNetUnfolder]: 78/854 cut-off events. [2020-02-10 23:03:54,657 INFO L130 PetriNetUnfolder]: For 351137/351602 co-relation queries the response was YES. [2020-02-10 23:03:54,693 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 23:03:54,738 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 162 selfloop transitions, 108 changer transitions 0/282 dead transitions. [2020-02-10 23:03:54,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:03:54,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:03:54,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:03:54,739 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:03:54,739 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:03:54,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:03:54,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:03:54,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:03:54,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:03:54,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:03:54,740 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:03:54,741 INFO L178 Difference]: Start difference. First operand has 637 places, 279 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:03:54,747 INFO L206 Difference]: Finished difference. Result has 644 places, 279 transitions [2020-02-10 23:03:54,747 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 23:03:54,747 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 644 places, 279 transitions [2020-02-10 23:03:56,142 INFO L129 PetriNetUnfolder]: 78/854 cut-off events. [2020-02-10 23:03:56,143 INFO L130 PetriNetUnfolder]: For 351646/351857 co-relation queries the response was YES. [2020-02-10 23:03:56,174 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 23:03:56,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 644 places, 279 transitions [2020-02-10 23:03:56,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 644 places, 279 transitions [2020-02-10 23:03:56,212 INFO L479 AbstractCegarLoop]: Abstraction has has 644 places, 279 transitions [2020-02-10 23:03:56,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:03:57,111 INFO L129 PetriNetUnfolder]: 78/808 cut-off events. [2020-02-10 23:03:57,112 INFO L130 PetriNetUnfolder]: For 351044/351209 co-relation queries the response was YES. [2020-02-10 23:03:57,112 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:03:57,112 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:03:57,112 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 23:03:57,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:03:57,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1861248986, now seen corresponding path program 75 times [2020-02-10 23:03:57,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:03:57,113 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253545360] [2020-02-10 23:03:57,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:03:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:03:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:03:57,262 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253545360] [2020-02-10 23:03:57,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:03:57,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:03:57,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916427990] [2020-02-10 23:03:57,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:03:57,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:03:57,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:03:57,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:03:57,264 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:03:57,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 279 transitions. Second operand 7 states. [2020-02-10 23:03:57,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:03:57,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:03:57,265 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:00,187 INFO L129 PetriNetUnfolder]: 78/853 cut-off events. [2020-02-10 23:04:00,187 INFO L130 PetriNetUnfolder]: For 355346/355810 co-relation queries the response was YES. [2020-02-10 23:04:00,222 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 23:04:00,263 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 149 selfloop transitions, 118 changer transitions 3/282 dead transitions. [2020-02-10 23:04:00,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:04:00,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:04:00,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:04:00,264 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:04:00,265 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:04:00,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:04:00,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:00,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:04:00,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:04:00,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:04:00,266 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:04:00,266 INFO L178 Difference]: Start difference. First operand has 644 places, 279 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:04:00,272 INFO L206 Difference]: Finished difference. Result has 651 places, 276 transitions [2020-02-10 23:04:00,272 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 23:04:00,272 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 651 places, 276 transitions [2020-02-10 23:04:01,709 INFO L129 PetriNetUnfolder]: 77/843 cut-off events. [2020-02-10 23:04:01,709 INFO L130 PetriNetUnfolder]: For 352566/352731 co-relation queries the response was YES. [2020-02-10 23:04:01,745 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 23:04:01,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 651 places, 276 transitions [2020-02-10 23:04:01,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 649 places, 276 transitions [2020-02-10 23:04:01,789 INFO L479 AbstractCegarLoop]: Abstraction has has 649 places, 276 transitions [2020-02-10 23:04:01,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:04:02,691 INFO L129 PetriNetUnfolder]: 77/798 cut-off events. [2020-02-10 23:04:02,691 INFO L130 PetriNetUnfolder]: For 352566/352731 co-relation queries the response was YES. [2020-02-10 23:04:02,691 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:02,691 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:02,691 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 23:04:02,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:02,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1890624450, now seen corresponding path program 76 times [2020-02-10 23:04:02,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:02,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590044060] [2020-02-10 23:04:02,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:02,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590044060] [2020-02-10 23:04:02,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:02,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:04:02,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274697668] [2020-02-10 23:04:02,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:04:02,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:02,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:04:02,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:04:02,840 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:04:02,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 276 transitions. Second operand 7 states. [2020-02-10 23:04:02,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:02,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:04:02,841 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:05,746 INFO L129 PetriNetUnfolder]: 77/842 cut-off events. [2020-02-10 23:04:05,746 INFO L130 PetriNetUnfolder]: For 356831/357295 co-relation queries the response was YES. [2020-02-10 23:04:05,782 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 23:04:05,827 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 158 selfloop transitions, 108 changer transitions 0/278 dead transitions. [2020-02-10 23:04:05,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:04:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:04:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:04:05,828 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:04:05,828 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:04:05,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:04:05,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:05,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:04:05,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:04:05,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:04:05,829 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:04:05,829 INFO L178 Difference]: Start difference. First operand has 649 places, 276 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:04:05,835 INFO L206 Difference]: Finished difference. Result has 656 places, 276 transitions [2020-02-10 23:04:05,836 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 23:04:05,836 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 656 places, 276 transitions [2020-02-10 23:04:07,213 INFO L129 PetriNetUnfolder]: 77/842 cut-off events. [2020-02-10 23:04:07,213 INFO L130 PetriNetUnfolder]: For 357119/357284 co-relation queries the response was YES. [2020-02-10 23:04:07,249 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 23:04:07,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 656 places, 276 transitions [2020-02-10 23:04:07,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 656 places, 276 transitions [2020-02-10 23:04:07,292 INFO L479 AbstractCegarLoop]: Abstraction has has 656 places, 276 transitions [2020-02-10 23:04:07,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:04:08,194 INFO L129 PetriNetUnfolder]: 77/798 cut-off events. [2020-02-10 23:04:08,195 INFO L130 PetriNetUnfolder]: For 357119/357284 co-relation queries the response was YES. [2020-02-10 23:04:08,195 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:08,195 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:08,195 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 23:04:08,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:08,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1918043724, now seen corresponding path program 77 times [2020-02-10 23:04:08,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:08,195 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994891997] [2020-02-10 23:04:08,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:08,361 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994891997] [2020-02-10 23:04:08,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:08,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:04:08,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296537688] [2020-02-10 23:04:08,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:04:08,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:08,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:04:08,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:04:08,363 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:04:08,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 276 transitions. Second operand 7 states. [2020-02-10 23:04:08,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:08,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:04:08,363 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:11,278 INFO L129 PetriNetUnfolder]: 77/841 cut-off events. [2020-02-10 23:04:11,278 INFO L130 PetriNetUnfolder]: For 361677/362227 co-relation queries the response was YES. [2020-02-10 23:04:11,314 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 23:04:11,366 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 160 selfloop transitions, 108 changer transitions 0/280 dead transitions. [2020-02-10 23:04:11,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:04:11,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:04:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:04:11,367 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:04:11,367 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:04:11,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:04:11,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:11,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:04:11,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:04:11,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:04:11,369 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:04:11,369 INFO L178 Difference]: Start difference. First operand has 656 places, 276 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:04:11,378 INFO L206 Difference]: Finished difference. Result has 663 places, 276 transitions [2020-02-10 23:04:11,378 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 23:04:11,379 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 663 places, 276 transitions [2020-02-10 23:04:12,798 INFO L129 PetriNetUnfolder]: 77/841 cut-off events. [2020-02-10 23:04:12,798 INFO L130 PetriNetUnfolder]: For 361060/361225 co-relation queries the response was YES. [2020-02-10 23:04:12,835 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 23:04:12,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 663 places, 276 transitions [2020-02-10 23:04:12,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 663 places, 276 transitions [2020-02-10 23:04:12,879 INFO L479 AbstractCegarLoop]: Abstraction has has 663 places, 276 transitions [2020-02-10 23:04:12,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:04:13,768 INFO L129 PetriNetUnfolder]: 77/798 cut-off events. [2020-02-10 23:04:13,769 INFO L130 PetriNetUnfolder]: For 361060/361225 co-relation queries the response was YES. [2020-02-10 23:04:13,769 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:13,769 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:13,769 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 23:04:13,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:13,769 INFO L82 PathProgramCache]: Analyzing trace with hash -606125214, now seen corresponding path program 78 times [2020-02-10 23:04:13,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:13,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301481573] [2020-02-10 23:04:13,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:13,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301481573] [2020-02-10 23:04:13,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:13,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:04:13,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670701578] [2020-02-10 23:04:13,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:04:13,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:13,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:04:13,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:04:13,913 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:04:13,914 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 276 transitions. Second operand 7 states. [2020-02-10 23:04:13,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:13,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:04:13,914 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:16,784 INFO L129 PetriNetUnfolder]: 77/840 cut-off events. [2020-02-10 23:04:16,784 INFO L130 PetriNetUnfolder]: For 365817/366367 co-relation queries the response was YES. [2020-02-10 23:04:16,817 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 23:04:16,857 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 148 selfloop transitions, 118 changer transitions 0/278 dead transitions. [2020-02-10 23:04:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:04:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:04:16,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:04:16,858 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:04:16,858 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:04:16,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:04:16,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:16,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:04:16,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:04:16,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:04:16,859 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:04:16,859 INFO L178 Difference]: Start difference. First operand has 663 places, 276 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:04:16,865 INFO L206 Difference]: Finished difference. Result has 670 places, 276 transitions [2020-02-10 23:04:16,865 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 23:04:16,866 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 670 places, 276 transitions [2020-02-10 23:04:18,280 INFO L129 PetriNetUnfolder]: 77/840 cut-off events. [2020-02-10 23:04:18,280 INFO L130 PetriNetUnfolder]: For 365613/365781 co-relation queries the response was YES. [2020-02-10 23:04:18,317 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 23:04:18,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 670 places, 276 transitions [2020-02-10 23:04:18,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 670 places, 276 transitions [2020-02-10 23:04:18,362 INFO L479 AbstractCegarLoop]: Abstraction has has 670 places, 276 transitions [2020-02-10 23:04:18,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:04:19,312 INFO L129 PetriNetUnfolder]: 77/798 cut-off events. [2020-02-10 23:04:19,312 INFO L130 PetriNetUnfolder]: For 365613/365781 co-relation queries the response was YES. [2020-02-10 23:04:19,313 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:19,313 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:19,313 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 23:04:19,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:19,313 INFO L82 PathProgramCache]: Analyzing trace with hash 900542206, now seen corresponding path program 79 times [2020-02-10 23:04:19,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:19,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718964229] [2020-02-10 23:04:19,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:19,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:19,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718964229] [2020-02-10 23:04:19,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:19,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:04:19,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993889505] [2020-02-10 23:04:19,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:04:19,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:19,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:04:19,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:04:19,488 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:04:19,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 276 transitions. Second operand 7 states. [2020-02-10 23:04:19,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:19,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:04:19,488 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:22,433 INFO L129 PetriNetUnfolder]: 77/839 cut-off events. [2020-02-10 23:04:22,434 INFO L130 PetriNetUnfolder]: For 370116/370668 co-relation queries the response was YES. [2020-02-10 23:04:22,470 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 23:04:22,515 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 148 selfloop transitions, 117 changer transitions 2/279 dead transitions. [2020-02-10 23:04:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:04:22,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:04:22,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:04:22,516 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:04:22,516 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:04:22,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:04:22,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:22,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:04:22,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:04:22,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:04:22,517 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:04:22,517 INFO L178 Difference]: Start difference. First operand has 670 places, 276 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:04:22,523 INFO L206 Difference]: Finished difference. Result has 677 places, 274 transitions [2020-02-10 23:04:22,524 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 23:04:22,524 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 677 places, 274 transitions [2020-02-10 23:04:23,872 INFO L129 PetriNetUnfolder]: 76/830 cut-off events. [2020-02-10 23:04:23,872 INFO L130 PetriNetUnfolder]: For 367428/367593 co-relation queries the response was YES. [2020-02-10 23:04:23,907 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 23:04:23,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 677 places, 274 transitions [2020-02-10 23:04:23,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 676 places, 274 transitions [2020-02-10 23:04:23,949 INFO L479 AbstractCegarLoop]: Abstraction has has 676 places, 274 transitions [2020-02-10 23:04:23,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:04:24,862 INFO L129 PetriNetUnfolder]: 76/789 cut-off events. [2020-02-10 23:04:24,863 INFO L130 PetriNetUnfolder]: For 368354/368573 co-relation queries the response was YES. [2020-02-10 23:04:24,863 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:24,863 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:24,863 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 23:04:24,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:24,863 INFO L82 PathProgramCache]: Analyzing trace with hash -2045319942, now seen corresponding path program 80 times [2020-02-10 23:04:24,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:24,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405328385] [2020-02-10 23:04:24,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:25,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405328385] [2020-02-10 23:04:25,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:25,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:04:25,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284034329] [2020-02-10 23:04:25,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:04:25,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:25,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:04:25,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:04:25,015 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:04:25,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 274 transitions. Second operand 7 states. [2020-02-10 23:04:25,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:25,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:04:25,015 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:27,950 INFO L129 PetriNetUnfolder]: 76/829 cut-off events. [2020-02-10 23:04:27,950 INFO L130 PetriNetUnfolder]: For 371882/372421 co-relation queries the response was YES. [2020-02-10 23:04:27,986 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 23:04:28,029 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 154 selfloop transitions, 111 changer transitions 0/277 dead transitions. [2020-02-10 23:04:28,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:04:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:04:28,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:04:28,030 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:04:28,030 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:04:28,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:04:28,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:28,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:04:28,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:04:28,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:04:28,031 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:04:28,032 INFO L178 Difference]: Start difference. First operand has 676 places, 274 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:04:28,040 INFO L206 Difference]: Finished difference. Result has 683 places, 274 transitions [2020-02-10 23:04:28,041 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 23:04:28,041 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 683 places, 274 transitions [2020-02-10 23:04:29,467 INFO L129 PetriNetUnfolder]: 76/829 cut-off events. [2020-02-10 23:04:29,467 INFO L130 PetriNetUnfolder]: For 372240/372459 co-relation queries the response was YES. [2020-02-10 23:04:29,503 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 23:04:29,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 683 places, 274 transitions [2020-02-10 23:04:29,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 683 places, 274 transitions [2020-02-10 23:04:29,547 INFO L479 AbstractCegarLoop]: Abstraction has has 683 places, 274 transitions [2020-02-10 23:04:29,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:04:30,446 INFO L129 PetriNetUnfolder]: 76/789 cut-off events. [2020-02-10 23:04:30,446 INFO L130 PetriNetUnfolder]: For 368753/368872 co-relation queries the response was YES. [2020-02-10 23:04:30,446 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:30,447 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:30,447 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 23:04:30,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:30,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1695659002, now seen corresponding path program 81 times [2020-02-10 23:04:30,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:30,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468687535] [2020-02-10 23:04:30,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:30,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468687535] [2020-02-10 23:04:30,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:30,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:04:30,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564589349] [2020-02-10 23:04:30,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:04:30,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:30,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:04:30,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:04:30,581 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:04:30,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 274 transitions. Second operand 7 states. [2020-02-10 23:04:30,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:30,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:04:30,582 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:33,731 INFO L129 PetriNetUnfolder]: 76/828 cut-off events. [2020-02-10 23:04:33,731 INFO L130 PetriNetUnfolder]: For 375731/376270 co-relation queries the response was YES. [2020-02-10 23:04:33,764 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 23:04:33,802 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 153 selfloop transitions, 112 changer transitions 0/277 dead transitions. [2020-02-10 23:04:33,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:04:33,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:04:33,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:04:33,803 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:04:33,803 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:04:33,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:04:33,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:33,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:04:33,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:04:33,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:04:33,805 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:04:33,805 INFO L178 Difference]: Start difference. First operand has 683 places, 274 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:04:33,815 INFO L206 Difference]: Finished difference. Result has 690 places, 274 transitions [2020-02-10 23:04:33,815 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 23:04:33,816 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 690 places, 274 transitions [2020-02-10 23:04:35,231 INFO L129 PetriNetUnfolder]: 76/828 cut-off events. [2020-02-10 23:04:35,232 INFO L130 PetriNetUnfolder]: For 372648/372773 co-relation queries the response was YES. [2020-02-10 23:04:35,269 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 23:04:35,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 690 places, 274 transitions [2020-02-10 23:04:35,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 690 places, 274 transitions [2020-02-10 23:04:35,313 INFO L479 AbstractCegarLoop]: Abstraction has has 690 places, 274 transitions [2020-02-10 23:04:35,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:04:36,260 INFO L129 PetriNetUnfolder]: 76/789 cut-off events. [2020-02-10 23:04:36,261 INFO L130 PetriNetUnfolder]: For 375209/375380 co-relation queries the response was YES. [2020-02-10 23:04:36,261 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:36,261 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:36,261 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 23:04:36,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:36,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1411697458, now seen corresponding path program 82 times [2020-02-10 23:04:36,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:36,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737187729] [2020-02-10 23:04:36,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:36,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737187729] [2020-02-10 23:04:36,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:36,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:04:36,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316058140] [2020-02-10 23:04:36,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:04:36,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:36,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:04:36,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:04:36,403 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:04:36,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 274 transitions. Second operand 7 states. [2020-02-10 23:04:36,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:36,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:04:36,404 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:39,381 INFO L129 PetriNetUnfolder]: 76/827 cut-off events. [2020-02-10 23:04:39,381 INFO L130 PetriNetUnfolder]: For 379642/380190 co-relation queries the response was YES. [2020-02-10 23:04:39,419 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 23:04:39,482 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 157 selfloop transitions, 109 changer transitions 0/278 dead transitions. [2020-02-10 23:04:39,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:04:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:04:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:04:39,484 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:04:39,484 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:04:39,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:04:39,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:39,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:04:39,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:04:39,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:04:39,485 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:04:39,486 INFO L178 Difference]: Start difference. First operand has 690 places, 274 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:04:39,494 INFO L206 Difference]: Finished difference. Result has 697 places, 274 transitions [2020-02-10 23:04:39,494 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 23:04:39,495 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 697 places, 274 transitions [2020-02-10 23:04:40,858 INFO L129 PetriNetUnfolder]: 76/827 cut-off events. [2020-02-10 23:04:40,858 INFO L130 PetriNetUnfolder]: For 377934/378100 co-relation queries the response was YES. [2020-02-10 23:04:40,893 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 23:04:40,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 697 places, 274 transitions [2020-02-10 23:04:40,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 697 places, 274 transitions [2020-02-10 23:04:40,934 INFO L479 AbstractCegarLoop]: Abstraction has has 697 places, 274 transitions [2020-02-10 23:04:40,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:04:41,880 INFO L129 PetriNetUnfolder]: 76/789 cut-off events. [2020-02-10 23:04:41,880 INFO L130 PetriNetUnfolder]: For 376422/376592 co-relation queries the response was YES. [2020-02-10 23:04:41,880 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:41,880 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:41,881 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 23:04:41,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:41,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1867773374, now seen corresponding path program 83 times [2020-02-10 23:04:41,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:41,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942078204] [2020-02-10 23:04:41,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:42,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:42,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942078204] [2020-02-10 23:04:42,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:42,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:04:42,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250426991] [2020-02-10 23:04:42,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:04:42,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:42,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:04:42,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:04:42,014 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:04:42,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 274 transitions. Second operand 7 states. [2020-02-10 23:04:42,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:42,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:04:42,017 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:45,019 INFO L129 PetriNetUnfolder]: 76/826 cut-off events. [2020-02-10 23:04:45,019 INFO L130 PetriNetUnfolder]: For 385306/385915 co-relation queries the response was YES. [2020-02-10 23:04:45,056 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 23:04:45,098 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 159 selfloop transitions, 106 changer transitions 0/277 dead transitions. [2020-02-10 23:04:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:04:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:04:45,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:04:45,100 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:04:45,100 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:04:45,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:04:45,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:45,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:04:45,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:04:45,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:04:45,101 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:04:45,101 INFO L178 Difference]: Start difference. First operand has 697 places, 274 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:04:45,108 INFO L206 Difference]: Finished difference. Result has 704 places, 274 transitions [2020-02-10 23:04:45,108 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 23:04:45,108 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 704 places, 274 transitions [2020-02-10 23:04:46,521 INFO L129 PetriNetUnfolder]: 76/826 cut-off events. [2020-02-10 23:04:46,521 INFO L130 PetriNetUnfolder]: For 379941/380103 co-relation queries the response was YES. [2020-02-10 23:04:46,558 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 23:04:46,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 704 places, 274 transitions [2020-02-10 23:04:46,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 704 places, 274 transitions [2020-02-10 23:04:46,602 INFO L479 AbstractCegarLoop]: Abstraction has has 704 places, 274 transitions [2020-02-10 23:04:46,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:04:47,558 INFO L129 PetriNetUnfolder]: 76/789 cut-off events. [2020-02-10 23:04:47,558 INFO L130 PetriNetUnfolder]: For 379941/380103 co-relation queries the response was YES. [2020-02-10 23:04:47,558 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:47,558 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:47,559 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 23:04:47,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:47,559 INFO L82 PathProgramCache]: Analyzing trace with hash 2046085690, now seen corresponding path program 84 times [2020-02-10 23:04:47,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:47,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181371287] [2020-02-10 23:04:47,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:47,709 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181371287] [2020-02-10 23:04:47,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:47,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:04:47,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661214530] [2020-02-10 23:04:47,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:04:47,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:47,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:04:47,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:04:47,711 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:04:47,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 704 places, 274 transitions. Second operand 7 states. [2020-02-10 23:04:47,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:47,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:04:47,711 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:50,674 INFO L129 PetriNetUnfolder]: 76/825 cut-off events. [2020-02-10 23:04:50,674 INFO L130 PetriNetUnfolder]: For 388154/388700 co-relation queries the response was YES. [2020-02-10 23:04:50,708 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 23:04:50,746 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 149 selfloop transitions, 116 changer transitions 0/277 dead transitions. [2020-02-10 23:04:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:04:50,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:04:50,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:04:50,748 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:04:50,748 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:04:50,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:04:50,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:50,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:04:50,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:04:50,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:04:50,749 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:04:50,749 INFO L178 Difference]: Start difference. First operand has 704 places, 274 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:04:50,759 INFO L206 Difference]: Finished difference. Result has 711 places, 274 transitions [2020-02-10 23:04:50,759 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 23:04:50,760 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 711 places, 274 transitions [2020-02-10 23:04:52,165 INFO L129 PetriNetUnfolder]: 76/825 cut-off events. [2020-02-10 23:04:52,165 INFO L130 PetriNetUnfolder]: For 383409/383571 co-relation queries the response was YES. [2020-02-10 23:04:52,202 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 23:04:52,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 711 places, 274 transitions [2020-02-10 23:04:52,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 711 places, 274 transitions [2020-02-10 23:04:52,246 INFO L479 AbstractCegarLoop]: Abstraction has has 711 places, 274 transitions [2020-02-10 23:04:52,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:04:53,222 INFO L129 PetriNetUnfolder]: 76/789 cut-off events. [2020-02-10 23:04:53,222 INFO L130 PetriNetUnfolder]: For 382818/382941 co-relation queries the response was YES. [2020-02-10 23:04:53,222 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:53,222 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:53,223 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 23:04:53,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:53,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1261552612, now seen corresponding path program 85 times [2020-02-10 23:04:53,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:53,223 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619084917] [2020-02-10 23:04:53,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:53,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619084917] [2020-02-10 23:04:53,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:53,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:04:53,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207534010] [2020-02-10 23:04:53,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:04:53,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:53,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:04:53,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:04:53,371 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:04:53,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 274 transitions. Second operand 7 states. [2020-02-10 23:04:53,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:53,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:04:53,371 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:04:56,380 INFO L129 PetriNetUnfolder]: 76/824 cut-off events. [2020-02-10 23:04:56,381 INFO L130 PetriNetUnfolder]: For 391716/392267 co-relation queries the response was YES. [2020-02-10 23:04:56,418 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 23:04:56,464 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 148 selfloop transitions, 114 changer transitions 3/277 dead transitions. [2020-02-10 23:04:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:04:56,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:04:56,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:04:56,465 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:04:56,465 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:04:56,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:04:56,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:04:56,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:04:56,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:04:56,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:04:56,467 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:04:56,467 INFO L178 Difference]: Start difference. First operand has 711 places, 274 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:04:56,476 INFO L206 Difference]: Finished difference. Result has 718 places, 271 transitions [2020-02-10 23:04:56,477 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 23:04:56,477 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 718 places, 271 transitions [2020-02-10 23:04:57,841 INFO L129 PetriNetUnfolder]: 75/814 cut-off events. [2020-02-10 23:04:57,841 INFO L130 PetriNetUnfolder]: For 382569/382692 co-relation queries the response was YES. [2020-02-10 23:04:57,877 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 23:04:57,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 718 places, 271 transitions [2020-02-10 23:04:57,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 714 places, 271 transitions [2020-02-10 23:04:57,917 INFO L479 AbstractCegarLoop]: Abstraction has has 714 places, 271 transitions [2020-02-10 23:04:57,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:04:58,869 INFO L129 PetriNetUnfolder]: 75/779 cut-off events. [2020-02-10 23:04:58,869 INFO L130 PetriNetUnfolder]: For 382569/382692 co-relation queries the response was YES. [2020-02-10 23:04:58,869 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:04:58,869 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:04:58,869 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 23:04:58,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:04:58,870 INFO L82 PathProgramCache]: Analyzing trace with hash -146228260, now seen corresponding path program 86 times [2020-02-10 23:04:58,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:04:58,870 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585988790] [2020-02-10 23:04:58,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:04:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:04:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:04:59,010 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585988790] [2020-02-10 23:04:59,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:04:59,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:04:59,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761016306] [2020-02-10 23:04:59,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:04:59,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:04:59,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:04:59,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:04:59,012 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:04:59,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 714 places, 271 transitions. Second operand 7 states. [2020-02-10 23:04:59,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:04:59,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:04:59,013 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:02,012 INFO L129 PetriNetUnfolder]: 75/813 cut-off events. [2020-02-10 23:05:02,012 INFO L130 PetriNetUnfolder]: For 391421/391972 co-relation queries the response was YES. [2020-02-10 23:05:02,049 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 23:05:02,091 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 151 selfloop transitions, 109 changer transitions 2/274 dead transitions. [2020-02-10 23:05:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:05:02,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:05:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:05:02,092 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:05:02,092 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:05:02,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:05:02,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:02,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:05:02,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:05:02,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:05:02,093 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:05:02,093 INFO L178 Difference]: Start difference. First operand has 714 places, 271 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:05:02,100 INFO L206 Difference]: Finished difference. Result has 721 places, 269 transitions [2020-02-10 23:05:02,100 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 23:05:02,100 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 721 places, 269 transitions [2020-02-10 23:05:03,506 INFO L129 PetriNetUnfolder]: 74/804 cut-off events. [2020-02-10 23:05:03,506 INFO L130 PetriNetUnfolder]: For 383575/383698 co-relation queries the response was YES. [2020-02-10 23:05:03,544 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 23:05:03,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 721 places, 269 transitions [2020-02-10 23:05:03,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 720 places, 269 transitions [2020-02-10 23:05:03,587 INFO L479 AbstractCegarLoop]: Abstraction has has 720 places, 269 transitions [2020-02-10 23:05:03,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:05:04,524 INFO L129 PetriNetUnfolder]: 74/770 cut-off events. [2020-02-10 23:05:04,524 INFO L130 PetriNetUnfolder]: For 384400/384625 co-relation queries the response was YES. [2020-02-10 23:05:04,524 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:05:04,524 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:05:04,524 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 23:05:04,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:05:04,524 INFO L82 PathProgramCache]: Analyzing trace with hash -582696680, now seen corresponding path program 87 times [2020-02-10 23:05:04,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:05:04,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339946251] [2020-02-10 23:05:04,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:05:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:05:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:05:04,662 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339946251] [2020-02-10 23:05:04,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:05:04,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:05:04,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819864793] [2020-02-10 23:05:04,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:05:04,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:05:04,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:05:04,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:05:04,663 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:05:04,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 269 transitions. Second operand 7 states. [2020-02-10 23:05:04,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:05:04,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:05:04,663 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:07,631 INFO L129 PetriNetUnfolder]: 74/803 cut-off events. [2020-02-10 23:05:07,631 INFO L130 PetriNetUnfolder]: For 392498/393057 co-relation queries the response was YES. [2020-02-10 23:05:07,678 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 23:05:07,720 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 151 selfloop transitions, 110 changer transitions 0/273 dead transitions. [2020-02-10 23:05:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:05:07,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:05:07,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:05:07,722 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:05:07,722 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:05:07,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:05:07,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:07,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:05:07,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:05:07,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:05:07,723 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:05:07,723 INFO L178 Difference]: Start difference. First operand has 720 places, 269 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:05:07,729 INFO L206 Difference]: Finished difference. Result has 728 places, 270 transitions [2020-02-10 23:05:07,730 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 23:05:07,730 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 728 places, 270 transitions [2020-02-10 23:05:09,085 INFO L129 PetriNetUnfolder]: 74/803 cut-off events. [2020-02-10 23:05:09,086 INFO L130 PetriNetUnfolder]: For 389024/389259 co-relation queries the response was YES. [2020-02-10 23:05:09,123 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 23:05:09,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 728 places, 270 transitions [2020-02-10 23:05:09,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 728 places, 270 transitions [2020-02-10 23:05:09,165 INFO L479 AbstractCegarLoop]: Abstraction has has 728 places, 270 transitions [2020-02-10 23:05:09,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:05:10,137 INFO L129 PetriNetUnfolder]: 74/770 cut-off events. [2020-02-10 23:05:10,137 INFO L130 PetriNetUnfolder]: For 391297/391580 co-relation queries the response was YES. [2020-02-10 23:05:10,137 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:05:10,137 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:05:10,137 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 23:05:10,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:05:10,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1936919392, now seen corresponding path program 88 times [2020-02-10 23:05:10,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:05:10,138 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127089065] [2020-02-10 23:05:10,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:05:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:05:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:05:10,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127089065] [2020-02-10 23:05:10,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:05:10,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:05:10,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954992704] [2020-02-10 23:05:10,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:05:10,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:05:10,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:05:10,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:05:10,299 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:05:10,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 728 places, 270 transitions. Second operand 7 states. [2020-02-10 23:05:10,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:05:10,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:05:10,299 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:13,269 INFO L129 PetriNetUnfolder]: 74/802 cut-off events. [2020-02-10 23:05:13,270 INFO L130 PetriNetUnfolder]: For 397080/397683 co-relation queries the response was YES. [2020-02-10 23:05:13,308 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 23:05:13,351 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 158 selfloop transitions, 104 changer transitions 0/274 dead transitions. [2020-02-10 23:05:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:05:13,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:05:13,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:05:13,352 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:05:13,352 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:05:13,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:05:13,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:13,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:05:13,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:05:13,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:05:13,353 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:05:13,353 INFO L178 Difference]: Start difference. First operand has 728 places, 270 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:05:13,360 INFO L206 Difference]: Finished difference. Result has 736 places, 271 transitions [2020-02-10 23:05:13,360 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 23:05:13,360 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 736 places, 271 transitions [2020-02-10 23:05:14,674 INFO L129 PetriNetUnfolder]: 74/802 cut-off events. [2020-02-10 23:05:14,674 INFO L130 PetriNetUnfolder]: For 395692/395975 co-relation queries the response was YES. [2020-02-10 23:05:14,710 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 23:05:14,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 736 places, 271 transitions [2020-02-10 23:05:14,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 736 places, 271 transitions [2020-02-10 23:05:14,750 INFO L479 AbstractCegarLoop]: Abstraction has has 736 places, 271 transitions [2020-02-10 23:05:14,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:05:15,731 INFO L129 PetriNetUnfolder]: 74/770 cut-off events. [2020-02-10 23:05:15,731 INFO L130 PetriNetUnfolder]: For 393657/393957 co-relation queries the response was YES. [2020-02-10 23:05:15,732 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:05:15,732 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:05:15,732 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 23:05:15,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:05:15,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1508109604, now seen corresponding path program 89 times [2020-02-10 23:05:15,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:05:15,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883692845] [2020-02-10 23:05:15,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:05:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:05:15,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:05:15,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883692845] [2020-02-10 23:05:15,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:05:15,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:05:15,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154552001] [2020-02-10 23:05:15,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:05:15,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:05:15,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:05:15,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:05:15,887 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:05:15,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 736 places, 271 transitions. Second operand 7 states. [2020-02-10 23:05:15,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:05:15,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:05:15,888 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:18,922 INFO L129 PetriNetUnfolder]: 74/801 cut-off events. [2020-02-10 23:05:18,923 INFO L130 PetriNetUnfolder]: For 401452/402055 co-relation queries the response was YES. [2020-02-10 23:05:18,960 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 23:05:19,002 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 156 selfloop transitions, 105 changer transitions 0/273 dead transitions. [2020-02-10 23:05:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:05:19,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:05:19,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:05:19,003 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:05:19,003 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:05:19,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:05:19,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:19,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:05:19,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:05:19,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:05:19,004 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:05:19,004 INFO L178 Difference]: Start difference. First operand has 736 places, 271 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:05:19,010 INFO L206 Difference]: Finished difference. Result has 743 places, 271 transitions [2020-02-10 23:05:19,011 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 23:05:19,011 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 743 places, 271 transitions [2020-02-10 23:05:20,377 INFO L129 PetriNetUnfolder]: 74/801 cut-off events. [2020-02-10 23:05:20,377 INFO L130 PetriNetUnfolder]: For 396379/396679 co-relation queries the response was YES. [2020-02-10 23:05:20,415 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 23:05:20,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 743 places, 271 transitions [2020-02-10 23:05:20,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 743 places, 271 transitions [2020-02-10 23:05:20,458 INFO L479 AbstractCegarLoop]: Abstraction has has 743 places, 271 transitions [2020-02-10 23:05:20,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:05:21,427 INFO L129 PetriNetUnfolder]: 74/770 cut-off events. [2020-02-10 23:05:21,428 INFO L130 PetriNetUnfolder]: For 395328/395542 co-relation queries the response was YES. [2020-02-10 23:05:21,428 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:05:21,428 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:05:21,428 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 23:05:21,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:05:21,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1037889978, now seen corresponding path program 90 times [2020-02-10 23:05:21,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:05:21,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889488008] [2020-02-10 23:05:21,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:05:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:05:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:05:21,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889488008] [2020-02-10 23:05:21,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:05:21,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:05:21,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142619075] [2020-02-10 23:05:21,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:05:21,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:05:21,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:05:21,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:05:21,573 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:05:21,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 271 transitions. Second operand 7 states. [2020-02-10 23:05:21,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:05:21,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:05:21,573 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:24,579 INFO L129 PetriNetUnfolder]: 74/800 cut-off events. [2020-02-10 23:05:24,579 INFO L130 PetriNetUnfolder]: For 402987/403574 co-relation queries the response was YES. [2020-02-10 23:05:24,615 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 23:05:24,665 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 156 selfloop transitions, 93 changer transitions 13/274 dead transitions. [2020-02-10 23:05:24,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:05:24,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:05:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:05:24,666 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:05:24,666 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:05:24,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:05:24,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:24,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:05:24,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:05:24,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:05:24,668 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:05:24,668 INFO L178 Difference]: Start difference. First operand has 743 places, 271 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:05:24,677 INFO L206 Difference]: Finished difference. Result has 750 places, 258 transitions [2020-02-10 23:05:24,678 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 23:05:24,678 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 750 places, 258 transitions [2020-02-10 23:05:25,993 INFO L129 PetriNetUnfolder]: 69/760 cut-off events. [2020-02-10 23:05:25,993 INFO L130 PetriNetUnfolder]: For 384505/384719 co-relation queries the response was YES. [2020-02-10 23:05:26,034 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 23:05:26,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 750 places, 258 transitions [2020-02-10 23:05:26,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 745 places, 258 transitions [2020-02-10 23:05:26,080 INFO L479 AbstractCegarLoop]: Abstraction has has 745 places, 258 transitions [2020-02-10 23:05:26,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:05:27,019 INFO L129 PetriNetUnfolder]: 69/730 cut-off events. [2020-02-10 23:05:27,019 INFO L130 PetriNetUnfolder]: For 384505/384719 co-relation queries the response was YES. [2020-02-10 23:05:27,020 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:05:27,020 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:05:27,020 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 23:05:27,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:05:27,020 INFO L82 PathProgramCache]: Analyzing trace with hash 269238598, now seen corresponding path program 91 times [2020-02-10 23:05:27,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:05:27,020 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809770585] [2020-02-10 23:05:27,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:05:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:05:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:05:27,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809770585] [2020-02-10 23:05:27,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:05:27,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:05:27,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39295792] [2020-02-10 23:05:27,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:05:27,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:05:27,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:05:27,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:05:27,155 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:05:27,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 745 places, 258 transitions. Second operand 7 states. [2020-02-10 23:05:27,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:05:27,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:05:27,155 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:30,020 INFO L129 PetriNetUnfolder]: 69/759 cut-off events. [2020-02-10 23:05:30,020 INFO L130 PetriNetUnfolder]: For 392183/392809 co-relation queries the response was YES. [2020-02-10 23:05:30,057 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 23:05:30,098 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 149 selfloop transitions, 100 changer transitions 0/261 dead transitions. [2020-02-10 23:05:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:05:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:05:30,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:05:30,099 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:05:30,099 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:05:30,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:05:30,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:30,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:05:30,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:05:30,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:05:30,101 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:05:30,101 INFO L178 Difference]: Start difference. First operand has 745 places, 258 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:05:30,107 INFO L206 Difference]: Finished difference. Result has 752 places, 258 transitions [2020-02-10 23:05:30,108 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 23:05:30,108 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 752 places, 258 transitions [2020-02-10 23:05:31,350 INFO L129 PetriNetUnfolder]: 69/759 cut-off events. [2020-02-10 23:05:31,351 INFO L130 PetriNetUnfolder]: For 386737/386959 co-relation queries the response was YES. [2020-02-10 23:05:31,386 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 23:05:31,386 INFO L82 GeneralOperation]: Start removeDead. Operand has 752 places, 258 transitions [2020-02-10 23:05:31,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 752 places, 258 transitions [2020-02-10 23:05:31,426 INFO L479 AbstractCegarLoop]: Abstraction has has 752 places, 258 transitions [2020-02-10 23:05:31,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:05:32,362 INFO L129 PetriNetUnfolder]: 69/730 cut-off events. [2020-02-10 23:05:32,362 INFO L130 PetriNetUnfolder]: For 388506/388831 co-relation queries the response was YES. [2020-02-10 23:05:32,362 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:05:32,362 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:05:32,362 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 23:05:32,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:05:32,363 INFO L82 PathProgramCache]: Analyzing trace with hash -59416134, now seen corresponding path program 92 times [2020-02-10 23:05:32,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:05:32,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821854899] [2020-02-10 23:05:32,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:05:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:05:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:05:32,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821854899] [2020-02-10 23:05:32,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:05:32,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:05:32,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812702462] [2020-02-10 23:05:32,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:05:32,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:05:32,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:05:32,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:05:32,530 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:05:32,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 752 places, 258 transitions. Second operand 7 states. [2020-02-10 23:05:32,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:05:32,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:05:32,531 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:35,396 INFO L129 PetriNetUnfolder]: 69/758 cut-off events. [2020-02-10 23:05:35,396 INFO L130 PetriNetUnfolder]: For 394401/395031 co-relation queries the response was YES. [2020-02-10 23:05:35,432 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 23:05:35,471 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 142 selfloop transitions, 106 changer transitions 0/260 dead transitions. [2020-02-10 23:05:35,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:05:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:05:35,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:05:35,472 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:05:35,472 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:05:35,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:05:35,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:35,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:05:35,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:05:35,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:05:35,474 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:05:35,474 INFO L178 Difference]: Start difference. First operand has 752 places, 258 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:05:35,480 INFO L206 Difference]: Finished difference. Result has 759 places, 258 transitions [2020-02-10 23:05:35,480 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 23:05:35,480 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 759 places, 258 transitions [2020-02-10 23:05:36,778 INFO L129 PetriNetUnfolder]: 69/758 cut-off events. [2020-02-10 23:05:36,779 INFO L130 PetriNetUnfolder]: For 390749/391074 co-relation queries the response was YES. [2020-02-10 23:05:36,815 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 23:05:36,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 759 places, 258 transitions [2020-02-10 23:05:36,856 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 759 places, 258 transitions [2020-02-10 23:05:36,856 INFO L479 AbstractCegarLoop]: Abstraction has has 759 places, 258 transitions [2020-02-10 23:05:36,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:05:37,834 INFO L129 PetriNetUnfolder]: 69/730 cut-off events. [2020-02-10 23:05:37,834 INFO L130 PetriNetUnfolder]: For 390749/391074 co-relation queries the response was YES. [2020-02-10 23:05:37,834 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:05:37,834 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:05:37,834 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 23:05:37,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:05:37,834 INFO L82 PathProgramCache]: Analyzing trace with hash -572193576, now seen corresponding path program 93 times [2020-02-10 23:05:37,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:05:37,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305456586] [2020-02-10 23:05:37,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:05:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:05:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:05:37,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305456586] [2020-02-10 23:05:37,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:05:37,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:05:37,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869194588] [2020-02-10 23:05:37,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:05:37,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:05:37,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:05:37,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:05:37,985 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:05:37,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 759 places, 258 transitions. Second operand 7 states. [2020-02-10 23:05:37,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:05:37,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:05:37,986 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:40,893 INFO L129 PetriNetUnfolder]: 69/757 cut-off events. [2020-02-10 23:05:40,893 INFO L130 PetriNetUnfolder]: For 396607/397237 co-relation queries the response was YES. [2020-02-10 23:05:40,925 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 23:05:40,960 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 141 selfloop transitions, 101 changer transitions 6/260 dead transitions. [2020-02-10 23:05:40,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:05:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:05:40,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:05:40,961 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:05:40,961 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:05:40,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:05:40,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:40,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:05:40,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:05:40,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:05:40,963 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:05:40,963 INFO L178 Difference]: Start difference. First operand has 759 places, 258 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:05:40,972 INFO L206 Difference]: Finished difference. Result has 766 places, 252 transitions [2020-02-10 23:05:40,972 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 23:05:40,973 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 766 places, 252 transitions [2020-02-10 23:05:42,244 INFO L129 PetriNetUnfolder]: 67/738 cut-off events. [2020-02-10 23:05:42,244 INFO L130 PetriNetUnfolder]: For 386011/386327 co-relation queries the response was YES. [2020-02-10 23:05:42,280 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 23:05:42,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 766 places, 252 transitions [2020-02-10 23:05:42,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 763 places, 252 transitions [2020-02-10 23:05:42,320 INFO L479 AbstractCegarLoop]: Abstraction has has 763 places, 252 transitions [2020-02-10 23:05:42,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:05:43,248 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:05:43,248 INFO L130 PetriNetUnfolder]: For 385968/386269 co-relation queries the response was YES. [2020-02-10 23:05:43,248 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:05:43,248 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:05:43,248 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 23:05:43,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:05:43,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1649899708, now seen corresponding path program 94 times [2020-02-10 23:05:43,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:05:43,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458150047] [2020-02-10 23:05:43,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:05:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:05:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:05:43,403 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458150047] [2020-02-10 23:05:43,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:05:43,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:05:43,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144097272] [2020-02-10 23:05:43,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:05:43,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:05:43,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:05:43,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:05:43,404 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:05:43,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 763 places, 252 transitions. Second operand 7 states. [2020-02-10 23:05:43,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:05:43,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:05:43,404 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:46,230 INFO L129 PetriNetUnfolder]: 67/737 cut-off events. [2020-02-10 23:05:46,230 INFO L130 PetriNetUnfolder]: For 391707/392266 co-relation queries the response was YES. [2020-02-10 23:05:46,266 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 23:05:46,305 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 145 selfloop transitions, 98 changer transitions 0/255 dead transitions. [2020-02-10 23:05:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:05:46,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:05:46,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:05:46,307 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:05:46,307 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:05:46,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:05:46,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:46,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:05:46,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:05:46,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:05:46,308 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:05:46,308 INFO L178 Difference]: Start difference. First operand has 763 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:05:46,314 INFO L206 Difference]: Finished difference. Result has 770 places, 252 transitions [2020-02-10 23:05:46,314 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 23:05:46,315 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 770 places, 252 transitions [2020-02-10 23:05:47,625 INFO L129 PetriNetUnfolder]: 67/737 cut-off events. [2020-02-10 23:05:47,625 INFO L130 PetriNetUnfolder]: For 387593/387893 co-relation queries the response was YES. [2020-02-10 23:05:47,656 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 23:05:47,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 770 places, 252 transitions [2020-02-10 23:05:47,689 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 770 places, 252 transitions [2020-02-10 23:05:47,689 INFO L479 AbstractCegarLoop]: Abstraction has has 770 places, 252 transitions [2020-02-10 23:05:47,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:05:48,626 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:05:48,626 INFO L130 PetriNetUnfolder]: For 386326/386544 co-relation queries the response was YES. [2020-02-10 23:05:48,626 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:05:48,627 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:05:48,627 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 23:05:48,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:05:48,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1089042946, now seen corresponding path program 95 times [2020-02-10 23:05:48,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:05:48,627 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016945418] [2020-02-10 23:05:48,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:05:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:05:48,772 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 23:05:48,773 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016945418] [2020-02-10 23:05:48,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:05:48,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:05:48,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546350256] [2020-02-10 23:05:48,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:05:48,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:05:48,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:05:48,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:05:48,775 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:05:48,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 252 transitions. Second operand 7 states. [2020-02-10 23:05:48,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:05:48,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:05:48,775 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:51,627 INFO L129 PetriNetUnfolder]: 67/736 cut-off events. [2020-02-10 23:05:51,628 INFO L130 PetriNetUnfolder]: For 393276/393832 co-relation queries the response was YES. [2020-02-10 23:05:51,663 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 23:05:51,700 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 150 selfloop transitions, 93 changer transitions 0/255 dead transitions. [2020-02-10 23:05:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:05:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:05:51,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:05:51,701 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:05:51,701 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:05:51,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:05:51,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:51,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:05:51,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:05:51,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:05:51,703 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:05:51,703 INFO L178 Difference]: Start difference. First operand has 770 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:05:51,709 INFO L206 Difference]: Finished difference. Result has 777 places, 252 transitions [2020-02-10 23:05:51,709 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 23:05:51,709 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 777 places, 252 transitions [2020-02-10 23:05:52,945 INFO L129 PetriNetUnfolder]: 67/736 cut-off events. [2020-02-10 23:05:52,945 INFO L130 PetriNetUnfolder]: For 388062/388280 co-relation queries the response was YES. [2020-02-10 23:05:52,981 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 23:05:52,982 INFO L82 GeneralOperation]: Start removeDead. Operand has 777 places, 252 transitions [2020-02-10 23:05:53,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 777 places, 252 transitions [2020-02-10 23:05:53,021 INFO L479 AbstractCegarLoop]: Abstraction has has 777 places, 252 transitions [2020-02-10 23:05:53,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:05:53,976 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:05:53,976 INFO L130 PetriNetUnfolder]: For 388062/388280 co-relation queries the response was YES. [2020-02-10 23:05:53,976 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:05:53,976 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:05:53,976 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 23:05:53,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:05:53,977 INFO L82 PathProgramCache]: Analyzing trace with hash 619417250, now seen corresponding path program 96 times [2020-02-10 23:05:53,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:05:53,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555003306] [2020-02-10 23:05:53,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:05:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:05:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:05:54,122 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555003306] [2020-02-10 23:05:54,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:05:54,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:05:54,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224781986] [2020-02-10 23:05:54,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:05:54,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:05:54,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:05:54,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:05:54,124 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:05:54,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 777 places, 252 transitions. Second operand 7 states. [2020-02-10 23:05:54,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:05:54,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:05:54,125 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:05:56,953 INFO L129 PetriNetUnfolder]: 67/735 cut-off events. [2020-02-10 23:05:56,953 INFO L130 PetriNetUnfolder]: For 395027/395583 co-relation queries the response was YES. [2020-02-10 23:05:56,991 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 23:05:57,031 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 144 selfloop transitions, 99 changer transitions 0/255 dead transitions. [2020-02-10 23:05:57,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:05:57,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:05:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:05:57,032 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:05:57,032 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:05:57,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:05:57,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:05:57,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:05:57,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:05:57,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:05:57,033 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:05:57,033 INFO L178 Difference]: Start difference. First operand has 777 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:05:57,039 INFO L206 Difference]: Finished difference. Result has 784 places, 252 transitions [2020-02-10 23:05:57,040 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 23:05:57,040 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 784 places, 252 transitions [2020-02-10 23:05:58,236 INFO L129 PetriNetUnfolder]: 67/735 cut-off events. [2020-02-10 23:05:58,237 INFO L130 PetriNetUnfolder]: For 389738/389956 co-relation queries the response was YES. [2020-02-10 23:05:58,273 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 23:05:58,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 784 places, 252 transitions [2020-02-10 23:05:58,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 784 places, 252 transitions [2020-02-10 23:05:58,311 INFO L479 AbstractCegarLoop]: Abstraction has has 784 places, 252 transitions [2020-02-10 23:05:58,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:05:59,265 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:05:59,265 INFO L130 PetriNetUnfolder]: For 389147/389295 co-relation queries the response was YES. [2020-02-10 23:05:59,265 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:05:59,266 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:05:59,266 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 23:05:59,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:05:59,266 INFO L82 PathProgramCache]: Analyzing trace with hash -886917760, now seen corresponding path program 97 times [2020-02-10 23:05:59,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:05:59,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152792115] [2020-02-10 23:05:59,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:05:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:05:59,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:05:59,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152792115] [2020-02-10 23:05:59,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:05:59,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:05:59,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867578386] [2020-02-10 23:05:59,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:05:59,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:05:59,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:05:59,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:05:59,434 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:05:59,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 784 places, 252 transitions. Second operand 7 states. [2020-02-10 23:05:59,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:05:59,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:05:59,434 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:06:02,270 INFO L129 PetriNetUnfolder]: 67/734 cut-off events. [2020-02-10 23:06:02,270 INFO L130 PetriNetUnfolder]: For 398680/399668 co-relation queries the response was YES. [2020-02-10 23:06:02,307 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 23:06:02,345 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 144 selfloop transitions, 99 changer transitions 0/255 dead transitions. [2020-02-10 23:06:02,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:06:02,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:06:02,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:06:02,346 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:06:02,346 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:06:02,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:06:02,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:06:02,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:06:02,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:06:02,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:06:02,347 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:06:02,348 INFO L178 Difference]: Start difference. First operand has 784 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:06:02,354 INFO L206 Difference]: Finished difference. Result has 791 places, 252 transitions [2020-02-10 23:06:02,354 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 23:06:02,354 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 791 places, 252 transitions [2020-02-10 23:06:03,583 INFO L129 PetriNetUnfolder]: 67/734 cut-off events. [2020-02-10 23:06:03,583 INFO L130 PetriNetUnfolder]: For 390802/390950 co-relation queries the response was YES. [2020-02-10 23:06:03,620 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 23:06:03,620 INFO L82 GeneralOperation]: Start removeDead. Operand has 791 places, 252 transitions [2020-02-10 23:06:03,659 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 791 places, 252 transitions [2020-02-10 23:06:03,659 INFO L479 AbstractCegarLoop]: Abstraction has has 791 places, 252 transitions [2020-02-10 23:06:03,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:06:04,603 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:06:04,603 INFO L130 PetriNetUnfolder]: For 390802/390950 co-relation queries the response was YES. [2020-02-10 23:06:04,603 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:04,603 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:04,603 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 23:06:04,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:04,603 INFO L82 PathProgramCache]: Analyzing trace with hash 521898012, now seen corresponding path program 98 times [2020-02-10 23:06:04,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:04,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673818811] [2020-02-10 23:06:04,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:04,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:06:04,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673818811] [2020-02-10 23:06:04,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:04,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:06:04,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048001711] [2020-02-10 23:06:04,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:06:04,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:04,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:06:04,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:06:04,788 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:06:04,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 791 places, 252 transitions. Second operand 7 states. [2020-02-10 23:06:04,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:04,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:06:04,788 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:06:07,622 INFO L129 PetriNetUnfolder]: 67/733 cut-off events. [2020-02-10 23:06:07,622 INFO L130 PetriNetUnfolder]: For 400381/401369 co-relation queries the response was YES. [2020-02-10 23:06:07,656 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 23:06:07,692 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 140 selfloop transitions, 103 changer transitions 0/255 dead transitions. [2020-02-10 23:06:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:06:07,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:06:07,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:06:07,694 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:06:07,694 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:06:07,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:06:07,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:06:07,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:06:07,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:06:07,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:06:07,695 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:06:07,695 INFO L178 Difference]: Start difference. First operand has 791 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:06:07,702 INFO L206 Difference]: Finished difference. Result has 798 places, 252 transitions [2020-02-10 23:06:07,702 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 23:06:07,703 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 798 places, 252 transitions [2020-02-10 23:06:08,938 INFO L129 PetriNetUnfolder]: 67/733 cut-off events. [2020-02-10 23:06:08,938 INFO L130 PetriNetUnfolder]: For 392259/392407 co-relation queries the response was YES. [2020-02-10 23:06:08,976 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 23:06:08,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 798 places, 252 transitions [2020-02-10 23:06:09,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 798 places, 252 transitions [2020-02-10 23:06:09,016 INFO L479 AbstractCegarLoop]: Abstraction has has 798 places, 252 transitions [2020-02-10 23:06:09,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:06:09,999 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:06:09,999 INFO L130 PetriNetUnfolder]: For 392259/392407 co-relation queries the response was YES. [2020-02-10 23:06:09,999 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:10,000 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:10,000 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 23:06:10,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:10,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1709654704, now seen corresponding path program 99 times [2020-02-10 23:06:10,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:10,000 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566612] [2020-02-10 23:06:10,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:06:10,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566612] [2020-02-10 23:06:10,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:10,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:06:10,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428417207] [2020-02-10 23:06:10,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:06:10,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:10,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:06:10,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:06:10,133 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:06:10,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 798 places, 252 transitions. Second operand 7 states. [2020-02-10 23:06:10,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:10,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:06:10,133 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:06:12,983 INFO L129 PetriNetUnfolder]: 67/732 cut-off events. [2020-02-10 23:06:12,983 INFO L130 PetriNetUnfolder]: For 401891/402879 co-relation queries the response was YES. [2020-02-10 23:06:13,021 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 23:06:13,060 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 138 selfloop transitions, 104 changer transitions 0/254 dead transitions. [2020-02-10 23:06:13,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:06:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:06:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:06:13,061 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:06:13,061 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:06:13,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:06:13,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:06:13,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:06:13,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:06:13,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:06:13,062 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:06:13,063 INFO L178 Difference]: Start difference. First operand has 798 places, 252 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:06:13,069 INFO L206 Difference]: Finished difference. Result has 805 places, 252 transitions [2020-02-10 23:06:13,070 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 23:06:13,070 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 805 places, 252 transitions [2020-02-10 23:06:14,302 INFO L129 PetriNetUnfolder]: 67/732 cut-off events. [2020-02-10 23:06:14,302 INFO L130 PetriNetUnfolder]: For 393601/393749 co-relation queries the response was YES. [2020-02-10 23:06:14,338 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 23:06:14,338 INFO L82 GeneralOperation]: Start removeDead. Operand has 805 places, 252 transitions [2020-02-10 23:06:14,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 805 places, 252 transitions [2020-02-10 23:06:14,375 INFO L479 AbstractCegarLoop]: Abstraction has has 805 places, 252 transitions [2020-02-10 23:06:14,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:06:15,349 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:06:15,350 INFO L130 PetriNetUnfolder]: For 392256/392347 co-relation queries the response was YES. [2020-02-10 23:06:15,350 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:15,350 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:15,350 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 23:06:15,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:15,350 INFO L82 PathProgramCache]: Analyzing trace with hash 351955952, now seen corresponding path program 100 times [2020-02-10 23:06:15,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:15,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734160322] [2020-02-10 23:06:15,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:06:15,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734160322] [2020-02-10 23:06:15,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:15,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:06:15,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139983672] [2020-02-10 23:06:15,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:06:15,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:15,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:06:15,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:06:15,501 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:06:15,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 805 places, 252 transitions. Second operand 7 states. [2020-02-10 23:06:15,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:15,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:06:15,502 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:06:18,409 INFO L129 PetriNetUnfolder]: 67/731 cut-off events. [2020-02-10 23:06:18,409 INFO L130 PetriNetUnfolder]: For 403161/404145 co-relation queries the response was YES. [2020-02-10 23:06:18,447 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 23:06:18,484 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 145 selfloop transitions, 98 changer transitions 0/255 dead transitions. [2020-02-10 23:06:18,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:06:18,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:06:18,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:06:18,485 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:06:18,485 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:06:18,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:06:18,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:06:18,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:06:18,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:06:18,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:06:18,487 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:06:18,488 INFO L178 Difference]: Start difference. First operand has 805 places, 252 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:06:18,496 INFO L206 Difference]: Finished difference. Result has 812 places, 252 transitions [2020-02-10 23:06:18,496 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 23:06:18,496 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 812 places, 252 transitions [2020-02-10 23:06:19,721 INFO L129 PetriNetUnfolder]: 67/731 cut-off events. [2020-02-10 23:06:19,721 INFO L130 PetriNetUnfolder]: For 393181/393269 co-relation queries the response was YES. [2020-02-10 23:06:19,759 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 23:06:19,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 812 places, 252 transitions [2020-02-10 23:06:19,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 812 places, 252 transitions [2020-02-10 23:06:19,798 INFO L479 AbstractCegarLoop]: Abstraction has has 812 places, 252 transitions [2020-02-10 23:06:19,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:06:20,824 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:06:20,824 INFO L130 PetriNetUnfolder]: For 393181/393269 co-relation queries the response was YES. [2020-02-10 23:06:20,824 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:20,824 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:20,824 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 23:06:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:20,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1761422176, now seen corresponding path program 101 times [2020-02-10 23:06:20,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:20,825 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139106436] [2020-02-10 23:06:20,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:06:20,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139106436] [2020-02-10 23:06:20,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:20,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:06:20,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702664396] [2020-02-10 23:06:20,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:06:20,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:20,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:06:20,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:06:20,984 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:06:20,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 812 places, 252 transitions. Second operand 7 states. [2020-02-10 23:06:20,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:20,985 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:06:20,985 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:06:23,889 INFO L129 PetriNetUnfolder]: 67/730 cut-off events. [2020-02-10 23:06:23,889 INFO L130 PetriNetUnfolder]: For 403872/404826 co-relation queries the response was YES. [2020-02-10 23:06:23,923 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 23:06:23,955 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 147 selfloop transitions, 95 changer transitions 0/254 dead transitions. [2020-02-10 23:06:23,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:06:23,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:06:23,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:06:23,957 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:06:23,957 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:06:23,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:06:23,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:06:23,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:06:23,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:06:23,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:06:23,958 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:06:23,958 INFO L178 Difference]: Start difference. First operand has 812 places, 252 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:06:23,964 INFO L206 Difference]: Finished difference. Result has 819 places, 252 transitions [2020-02-10 23:06:23,964 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 23:06:23,965 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 819 places, 252 transitions [2020-02-10 23:06:25,192 INFO L129 PetriNetUnfolder]: 67/730 cut-off events. [2020-02-10 23:06:25,192 INFO L130 PetriNetUnfolder]: For 394002/394090 co-relation queries the response was YES. [2020-02-10 23:06:25,230 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 23:06:25,230 INFO L82 GeneralOperation]: Start removeDead. Operand has 819 places, 252 transitions [2020-02-10 23:06:25,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 819 places, 252 transitions [2020-02-10 23:06:25,269 INFO L479 AbstractCegarLoop]: Abstraction has has 819 places, 252 transitions [2020-02-10 23:06:25,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:06:26,268 INFO L129 PetriNetUnfolder]: 67/711 cut-off events. [2020-02-10 23:06:26,268 INFO L130 PetriNetUnfolder]: For 394362/394504 co-relation queries the response was YES. [2020-02-10 23:06:26,268 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:26,268 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:26,268 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 23:06:26,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:26,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1976514170, now seen corresponding path program 102 times [2020-02-10 23:06:26,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:26,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961001679] [2020-02-10 23:06:26,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:06:26,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961001679] [2020-02-10 23:06:26,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:26,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:06:26,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7851396] [2020-02-10 23:06:26,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:06:26,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:26,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:06:26,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:06:26,415 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:06:26,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 819 places, 252 transitions. Second operand 7 states. [2020-02-10 23:06:26,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:26,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:06:26,415 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:06:29,310 INFO L129 PetriNetUnfolder]: 67/729 cut-off events. [2020-02-10 23:06:29,310 INFO L130 PetriNetUnfolder]: For 404181/405070 co-relation queries the response was YES. [2020-02-10 23:06:29,349 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 23:06:29,387 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 132 selfloop transitions, 107 changer transitions 3/254 dead transitions. [2020-02-10 23:06:29,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:06:29,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:06:29,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:06:29,388 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:06:29,388 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:06:29,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:06:29,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:06:29,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:06:29,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:06:29,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:06:29,389 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:06:29,389 INFO L178 Difference]: Start difference. First operand has 819 places, 252 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:06:29,397 INFO L206 Difference]: Finished difference. Result has 826 places, 249 transitions [2020-02-10 23:06:29,397 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 23:06:29,397 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 826 places, 249 transitions [2020-02-10 23:06:30,606 INFO L129 PetriNetUnfolder]: 66/719 cut-off events. [2020-02-10 23:06:30,607 INFO L130 PetriNetUnfolder]: For 391266/391408 co-relation queries the response was YES. [2020-02-10 23:06:30,641 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 23:06:30,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 826 places, 249 transitions [2020-02-10 23:06:30,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 822 places, 249 transitions [2020-02-10 23:06:30,673 INFO L479 AbstractCegarLoop]: Abstraction has has 822 places, 249 transitions [2020-02-10 23:06:30,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:06:31,655 INFO L129 PetriNetUnfolder]: 66/701 cut-off events. [2020-02-10 23:06:31,655 INFO L130 PetriNetUnfolder]: For 392076/392266 co-relation queries the response was YES. [2020-02-10 23:06:31,655 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:31,655 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:31,656 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 23:06:31,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:31,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1161405578, now seen corresponding path program 103 times [2020-02-10 23:06:31,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:31,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060759354] [2020-02-10 23:06:31,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:31,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:06:31,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060759354] [2020-02-10 23:06:31,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:31,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:06:31,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143937060] [2020-02-10 23:06:31,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:06:31,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:31,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:06:31,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:06:31,801 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:06:31,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 822 places, 249 transitions. Second operand 7 states. [2020-02-10 23:06:31,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:31,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:06:31,801 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:06:34,678 INFO L129 PetriNetUnfolder]: 66/718 cut-off events. [2020-02-10 23:06:34,678 INFO L130 PetriNetUnfolder]: For 399043/399542 co-relation queries the response was YES. [2020-02-10 23:06:34,722 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 23:06:34,758 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 140 selfloop transitions, 99 changer transitions 0/251 dead transitions. [2020-02-10 23:06:34,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:06:34,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:06:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:06:34,759 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:06:34,759 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:06:34,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:06:34,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:06:34,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:06:34,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:06:34,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:06:34,760 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:06:34,760 INFO L178 Difference]: Start difference. First operand has 822 places, 249 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:06:34,769 INFO L206 Difference]: Finished difference. Result has 829 places, 249 transitions [2020-02-10 23:06:34,770 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 23:06:34,770 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 829 places, 249 transitions [2020-02-10 23:06:35,967 INFO L129 PetriNetUnfolder]: 66/718 cut-off events. [2020-02-10 23:06:35,968 INFO L130 PetriNetUnfolder]: For 392506/392696 co-relation queries the response was YES. [2020-02-10 23:06:36,005 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 23:06:36,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 829 places, 249 transitions [2020-02-10 23:06:36,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 829 places, 249 transitions [2020-02-10 23:06:36,043 INFO L479 AbstractCegarLoop]: Abstraction has has 829 places, 249 transitions [2020-02-10 23:06:36,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:06:37,120 INFO L129 PetriNetUnfolder]: 66/701 cut-off events. [2020-02-10 23:06:37,120 INFO L130 PetriNetUnfolder]: For 392817/393011 co-relation queries the response was YES. [2020-02-10 23:06:37,120 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:37,120 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:37,120 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 23:06:37,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:37,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2010874306, now seen corresponding path program 104 times [2020-02-10 23:06:37,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:37,121 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417248893] [2020-02-10 23:06:37,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:37,257 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 23:06:37,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417248893] [2020-02-10 23:06:37,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:37,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:06:37,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782721324] [2020-02-10 23:06:37,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:06:37,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:37,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:06:37,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:06:37,259 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:06:37,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 829 places, 249 transitions. Second operand 7 states. [2020-02-10 23:06:37,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:37,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:06:37,259 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:06:40,186 INFO L129 PetriNetUnfolder]: 66/717 cut-off events. [2020-02-10 23:06:40,186 INFO L130 PetriNetUnfolder]: For 399400/399899 co-relation queries the response was YES. [2020-02-10 23:06:40,219 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 23:06:40,250 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 142 selfloop transitions, 86 changer transitions 11/251 dead transitions. [2020-02-10 23:06:40,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:06:40,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:06:40,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:06:40,251 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:06:40,251 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:06:40,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:06:40,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:06:40,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:06:40,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:06:40,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:06:40,252 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:06:40,252 INFO L178 Difference]: Start difference. First operand has 829 places, 249 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:06:40,258 INFO L206 Difference]: Finished difference. Result has 836 places, 238 transitions [2020-02-10 23:06:40,258 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 23:06:40,258 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 836 places, 238 transitions [2020-02-10 23:06:41,411 INFO L129 PetriNetUnfolder]: 63/684 cut-off events. [2020-02-10 23:06:41,412 INFO L130 PetriNetUnfolder]: For 377792/377986 co-relation queries the response was YES. [2020-02-10 23:06:41,448 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 23:06:41,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 836 places, 238 transitions [2020-02-10 23:06:41,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 828 places, 238 transitions [2020-02-10 23:06:41,484 INFO L479 AbstractCegarLoop]: Abstraction has has 828 places, 238 transitions [2020-02-10 23:06:41,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:06:42,428 INFO L129 PetriNetUnfolder]: 63/668 cut-off events. [2020-02-10 23:06:42,428 INFO L130 PetriNetUnfolder]: For 377063/377234 co-relation queries the response was YES. [2020-02-10 23:06:42,428 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:42,428 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:42,428 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 23:06:42,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:42,428 INFO L82 PathProgramCache]: Analyzing trace with hash 837363570, now seen corresponding path program 105 times [2020-02-10 23:06:42,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:42,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688777144] [2020-02-10 23:06:42,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:06:42,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688777144] [2020-02-10 23:06:42,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:42,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:06:42,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868171077] [2020-02-10 23:06:42,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:06:42,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:42,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:06:42,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:06:42,582 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:06:42,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 828 places, 238 transitions. Second operand 7 states. [2020-02-10 23:06:42,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:42,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:06:42,582 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:06:45,310 INFO L129 PetriNetUnfolder]: 63/683 cut-off events. [2020-02-10 23:06:45,310 INFO L130 PetriNetUnfolder]: For 384309/384808 co-relation queries the response was YES. [2020-02-10 23:06:45,347 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 23:06:45,382 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 134 selfloop transitions, 89 changer transitions 6/241 dead transitions. [2020-02-10 23:06:45,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:06:45,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:06:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:06:45,383 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:06:45,383 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:06:45,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:06:45,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:06:45,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:06:45,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:06:45,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:06:45,384 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:06:45,384 INFO L178 Difference]: Start difference. First operand has 828 places, 238 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:06:45,390 INFO L206 Difference]: Finished difference. Result has 835 places, 232 transitions [2020-02-10 23:06:45,390 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 23:06:45,390 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 835 places, 232 transitions [2020-02-10 23:06:46,476 INFO L129 PetriNetUnfolder]: 61/664 cut-off events. [2020-02-10 23:06:46,476 INFO L130 PetriNetUnfolder]: For 368904/369075 co-relation queries the response was YES. [2020-02-10 23:06:46,511 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 23:06:46,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 835 places, 232 transitions [2020-02-10 23:06:46,546 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 833 places, 232 transitions [2020-02-10 23:06:46,546 INFO L479 AbstractCegarLoop]: Abstraction has has 833 places, 232 transitions [2020-02-10 23:06:46,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:06:47,437 INFO L129 PetriNetUnfolder]: 61/649 cut-off events. [2020-02-10 23:06:47,438 INFO L130 PetriNetUnfolder]: For 368904/369075 co-relation queries the response was YES. [2020-02-10 23:06:47,438 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:47,438 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:47,438 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 23:06:47,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:47,438 INFO L82 PathProgramCache]: Analyzing trace with hash -772026050, now seen corresponding path program 106 times [2020-02-10 23:06:47,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:47,438 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568874758] [2020-02-10 23:06:47,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:06:47,557 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568874758] [2020-02-10 23:06:47,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:47,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:06:47,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378412206] [2020-02-10 23:06:47,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:06:47,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:47,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:06:47,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:06:47,559 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:06:47,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 833 places, 232 transitions. Second operand 7 states. [2020-02-10 23:06:47,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:47,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:06:47,560 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:06:50,233 INFO L129 PetriNetUnfolder]: 61/663 cut-off events. [2020-02-10 23:06:50,233 INFO L130 PetriNetUnfolder]: For 376165/376664 co-relation queries the response was YES. [2020-02-10 23:06:50,266 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 23:06:50,298 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 132 selfloop transitions, 86 changer transitions 5/235 dead transitions. [2020-02-10 23:06:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:06:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:06:50,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:06:50,299 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:06:50,299 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:06:50,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:06:50,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:06:50,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:06:50,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:06:50,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:06:50,300 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:06:50,300 INFO L178 Difference]: Start difference. First operand has 833 places, 232 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:06:50,308 INFO L206 Difference]: Finished difference. Result has 840 places, 227 transitions [2020-02-10 23:06:50,309 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 23:06:50,309 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 840 places, 227 transitions [2020-02-10 23:06:51,361 INFO L129 PetriNetUnfolder]: 59/645 cut-off events. [2020-02-10 23:06:51,361 INFO L130 PetriNetUnfolder]: For 361340/361511 co-relation queries the response was YES. [2020-02-10 23:06:51,395 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 23:06:51,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 840 places, 227 transitions [2020-02-10 23:06:51,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 833 places, 227 transitions [2020-02-10 23:06:51,430 INFO L479 AbstractCegarLoop]: Abstraction has has 833 places, 227 transitions [2020-02-10 23:06:51,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:06:52,338 INFO L129 PetriNetUnfolder]: 59/631 cut-off events. [2020-02-10 23:06:52,338 INFO L130 PetriNetUnfolder]: For 361340/361511 co-relation queries the response was YES. [2020-02-10 23:06:52,338 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:52,338 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:52,338 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 23:06:52,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:52,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1133469582, now seen corresponding path program 107 times [2020-02-10 23:06:52,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:52,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377972849] [2020-02-10 23:06:52,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:06:52,541 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377972849] [2020-02-10 23:06:52,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:52,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:06:52,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800666521] [2020-02-10 23:06:52,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:06:52,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:52,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:06:52,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:06:52,543 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:06:52,543 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 833 places, 227 transitions. Second operand 7 states. [2020-02-10 23:06:52,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:52,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:06:52,544 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:06:55,259 INFO L129 PetriNetUnfolder]: 59/644 cut-off events. [2020-02-10 23:06:55,259 INFO L130 PetriNetUnfolder]: For 368656/369155 co-relation queries the response was YES. [2020-02-10 23:06:55,293 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 23:06:55,327 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 135 selfloop transitions, 83 changer transitions 0/230 dead transitions. [2020-02-10 23:06:55,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:06:55,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:06:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:06:55,328 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:06:55,328 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:06:55,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:06:55,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:06:55,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:06:55,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:06:55,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:06:55,329 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:06:55,329 INFO L178 Difference]: Start difference. First operand has 833 places, 227 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:06:55,335 INFO L206 Difference]: Finished difference. Result has 840 places, 227 transitions [2020-02-10 23:06:55,335 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 23:06:55,335 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 840 places, 227 transitions [2020-02-10 23:06:56,377 INFO L129 PetriNetUnfolder]: 59/644 cut-off events. [2020-02-10 23:06:56,377 INFO L130 PetriNetUnfolder]: For 360617/360788 co-relation queries the response was YES. [2020-02-10 23:06:56,412 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 23:06:56,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 840 places, 227 transitions [2020-02-10 23:06:56,445 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 840 places, 227 transitions [2020-02-10 23:06:56,445 INFO L479 AbstractCegarLoop]: Abstraction has has 840 places, 227 transitions [2020-02-10 23:06:56,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:06:57,332 INFO L129 PetriNetUnfolder]: 59/631 cut-off events. [2020-02-10 23:06:57,332 INFO L130 PetriNetUnfolder]: For 360511/360657 co-relation queries the response was YES. [2020-02-10 23:06:57,332 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:06:57,333 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:06:57,333 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 23:06:57,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:06:57,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1001106212, now seen corresponding path program 108 times [2020-02-10 23:06:57,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:06:57,333 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580766885] [2020-02-10 23:06:57,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:06:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:06:57,488 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 23:06:57,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580766885] [2020-02-10 23:06:57,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:06:57,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:06:57,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363808670] [2020-02-10 23:06:57,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:06:57,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:06:57,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:06:57,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:06:57,490 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:06:57,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 840 places, 227 transitions. Second operand 7 states. [2020-02-10 23:06:57,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:06:57,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:06:57,491 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:00,106 INFO L129 PetriNetUnfolder]: 59/643 cut-off events. [2020-02-10 23:07:00,106 INFO L130 PetriNetUnfolder]: For 367842/368341 co-relation queries the response was YES. [2020-02-10 23:07:00,139 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 23:07:00,169 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 130 selfloop transitions, 82 changer transitions 5/229 dead transitions. [2020-02-10 23:07:00,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:07:00,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:07:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:07:00,170 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:07:00,170 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:07:00,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:07:00,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:00,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:07:00,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:07:00,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:07:00,171 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:07:00,171 INFO L178 Difference]: Start difference. First operand has 840 places, 227 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:07:00,176 INFO L206 Difference]: Finished difference. Result has 847 places, 222 transitions [2020-02-10 23:07:00,177 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 23:07:00,177 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 847 places, 222 transitions [2020-02-10 23:07:01,183 INFO L129 PetriNetUnfolder]: 57/625 cut-off events. [2020-02-10 23:07:01,184 INFO L130 PetriNetUnfolder]: For 352415/352561 co-relation queries the response was YES. [2020-02-10 23:07:01,217 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 23:07:01,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 847 places, 222 transitions [2020-02-10 23:07:01,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 844 places, 222 transitions [2020-02-10 23:07:01,250 INFO L479 AbstractCegarLoop]: Abstraction has has 844 places, 222 transitions [2020-02-10 23:07:01,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:07:02,136 INFO L129 PetriNetUnfolder]: 57/613 cut-off events. [2020-02-10 23:07:02,137 INFO L130 PetriNetUnfolder]: For 352415/352561 co-relation queries the response was YES. [2020-02-10 23:07:02,137 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:02,137 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:07:02,137 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 23:07:02,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:02,137 INFO L82 PathProgramCache]: Analyzing trace with hash -412055562, now seen corresponding path program 109 times [2020-02-10 23:07:02,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:02,138 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027289868] [2020-02-10 23:07:02,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:07:02,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027289868] [2020-02-10 23:07:02,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:02,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:07:02,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554239993] [2020-02-10 23:07:02,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:07:02,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:02,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:07:02,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:07:02,279 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:07:02,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 844 places, 222 transitions. Second operand 7 states. [2020-02-10 23:07:02,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:02,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:07:02,279 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:04,792 INFO L129 PetriNetUnfolder]: 57/624 cut-off events. [2020-02-10 23:07:04,793 INFO L130 PetriNetUnfolder]: For 359666/360165 co-relation queries the response was YES. [2020-02-10 23:07:04,827 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 23:07:04,859 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 119 selfloop transitions, 94 changer transitions 0/225 dead transitions. [2020-02-10 23:07:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:07:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:07:04,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2020-02-10 23:07:04,860 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8274932614555256 [2020-02-10 23:07:04,861 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2020-02-10 23:07:04,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2020-02-10 23:07:04,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:04,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2020-02-10 23:07:04,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:07:04,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:07:04,861 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:07:04,861 INFO L178 Difference]: Start difference. First operand has 844 places, 222 transitions. Second operand 7 states and 307 transitions. [2020-02-10 23:07:04,867 INFO L206 Difference]: Finished difference. Result has 851 places, 222 transitions [2020-02-10 23:07:04,867 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 23:07:04,867 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 851 places, 222 transitions [2020-02-10 23:07:05,877 INFO L129 PetriNetUnfolder]: 57/624 cut-off events. [2020-02-10 23:07:05,877 INFO L130 PetriNetUnfolder]: For 351691/351837 co-relation queries the response was YES. [2020-02-10 23:07:05,911 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 23:07:05,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 851 places, 222 transitions [2020-02-10 23:07:05,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 851 places, 222 transitions [2020-02-10 23:07:05,944 INFO L479 AbstractCegarLoop]: Abstraction has has 851 places, 222 transitions [2020-02-10 23:07:05,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:07:06,815 INFO L129 PetriNetUnfolder]: 57/613 cut-off events. [2020-02-10 23:07:06,815 INFO L130 PetriNetUnfolder]: For 351691/351837 co-relation queries the response was YES. [2020-02-10 23:07:06,815 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:06,815 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:07:06,815 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 23:07:06,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:06,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1120035412, now seen corresponding path program 110 times [2020-02-10 23:07:06,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:06,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613913629] [2020-02-10 23:07:06,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:06,957 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 23:07:06,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613913629] [2020-02-10 23:07:06,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:06,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:07:06,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39950635] [2020-02-10 23:07:06,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:07:06,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:06,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:07:06,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:07:06,959 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:07:06,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 851 places, 222 transitions. Second operand 7 states. [2020-02-10 23:07:06,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:06,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:07:06,959 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:09,509 INFO L129 PetriNetUnfolder]: 57/623 cut-off events. [2020-02-10 23:07:09,509 INFO L130 PetriNetUnfolder]: For 358949/359452 co-relation queries the response was YES. [2020-02-10 23:07:09,542 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 23:07:09,570 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 121 selfloop transitions, 87 changer transitions 4/224 dead transitions. [2020-02-10 23:07:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:07:09,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:07:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:07:09,572 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:07:09,572 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:07:09,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:07:09,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:09,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:07:09,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:07:09,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:07:09,572 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:07:09,572 INFO L178 Difference]: Start difference. First operand has 851 places, 222 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:07:09,578 INFO L206 Difference]: Finished difference. Result has 858 places, 218 transitions [2020-02-10 23:07:09,578 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 23:07:09,578 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 858 places, 218 transitions [2020-02-10 23:07:10,563 INFO L129 PetriNetUnfolder]: 56/612 cut-off events. [2020-02-10 23:07:10,563 INFO L130 PetriNetUnfolder]: For 345620/345766 co-relation queries the response was YES. [2020-02-10 23:07:10,596 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 23:07:10,596 INFO L82 GeneralOperation]: Start removeDead. Operand has 858 places, 218 transitions [2020-02-10 23:07:10,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 853 places, 218 transitions [2020-02-10 23:07:10,628 INFO L479 AbstractCegarLoop]: Abstraction has has 853 places, 218 transitions [2020-02-10 23:07:10,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:07:11,506 INFO L129 PetriNetUnfolder]: 56/602 cut-off events. [2020-02-10 23:07:11,506 INFO L130 PetriNetUnfolder]: For 345620/345766 co-relation queries the response was YES. [2020-02-10 23:07:11,506 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:11,507 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:07:11,507 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 23:07:11,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:11,507 INFO L82 PathProgramCache]: Analyzing trace with hash -781886628, now seen corresponding path program 111 times [2020-02-10 23:07:11,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:11,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191964693] [2020-02-10 23:07:11,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:11,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:07:11,642 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191964693] [2020-02-10 23:07:11,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:11,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:07:11,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730604153] [2020-02-10 23:07:11,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:07:11,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:11,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:07:11,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:07:11,644 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:07:11,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 853 places, 218 transitions. Second operand 7 states. [2020-02-10 23:07:11,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:11,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:07:11,644 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:14,140 INFO L129 PetriNetUnfolder]: 56/611 cut-off events. [2020-02-10 23:07:14,140 INFO L130 PetriNetUnfolder]: For 352905/353408 co-relation queries the response was YES. [2020-02-10 23:07:14,174 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 23:07:14,205 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 122 selfloop transitions, 74 changer transitions 11/219 dead transitions. [2020-02-10 23:07:14,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:07:14,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:07:14,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2020-02-10 23:07:14,206 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8221024258760108 [2020-02-10 23:07:14,206 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2020-02-10 23:07:14,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2020-02-10 23:07:14,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:14,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2020-02-10 23:07:14,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:07:14,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:07:14,207 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:07:14,207 INFO L178 Difference]: Start difference. First operand has 853 places, 218 transitions. Second operand 7 states and 305 transitions. [2020-02-10 23:07:14,212 INFO L206 Difference]: Finished difference. Result has 860 places, 207 transitions [2020-02-10 23:07:14,212 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 23:07:14,212 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 860 places, 207 transitions [2020-02-10 23:07:15,118 INFO L129 PetriNetUnfolder]: 53/577 cut-off events. [2020-02-10 23:07:15,118 INFO L130 PetriNetUnfolder]: For 325597/325743 co-relation queries the response was YES. [2020-02-10 23:07:15,150 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 23:07:15,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 860 places, 207 transitions [2020-02-10 23:07:15,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 852 places, 207 transitions [2020-02-10 23:07:15,181 INFO L479 AbstractCegarLoop]: Abstraction has has 852 places, 207 transitions [2020-02-10 23:07:15,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:07:16,012 INFO L129 PetriNetUnfolder]: 53/568 cut-off events. [2020-02-10 23:07:16,013 INFO L130 PetriNetUnfolder]: For 325643/325799 co-relation queries the response was YES. [2020-02-10 23:07:16,013 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:16,013 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:07:16,013 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 23:07:16,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:16,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1890195748, now seen corresponding path program 112 times [2020-02-10 23:07:16,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:16,013 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268452430] [2020-02-10 23:07:16,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:07:16,155 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268452430] [2020-02-10 23:07:16,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:16,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:07:16,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731834153] [2020-02-10 23:07:16,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:07:16,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:16,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:07:16,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:07:16,156 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:07:16,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 852 places, 207 transitions. Second operand 7 states. [2020-02-10 23:07:16,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:16,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:07:16,157 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:18,486 INFO L129 PetriNetUnfolder]: 53/576 cut-off events. [2020-02-10 23:07:18,486 INFO L130 PetriNetUnfolder]: For 333215/333767 co-relation queries the response was YES. [2020-02-10 23:07:18,517 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 23:07:18,547 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 80 selfloop transitions, 67 changer transitions 49/208 dead transitions. [2020-02-10 23:07:18,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:07:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:07:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2020-02-10 23:07:18,548 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8221024258760108 [2020-02-10 23:07:18,548 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2020-02-10 23:07:18,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2020-02-10 23:07:18,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:18,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2020-02-10 23:07:18,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:07:18,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:07:18,549 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:07:18,549 INFO L178 Difference]: Start difference. First operand has 852 places, 207 transitions. Second operand 7 states and 305 transitions. [2020-02-10 23:07:18,553 INFO L206 Difference]: Finished difference. Result has 859 places, 158 transitions [2020-02-10 23:07:18,553 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 23:07:18,553 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 859 places, 158 transitions [2020-02-10 23:07:19,179 INFO L129 PetriNetUnfolder]: 42/436 cut-off events. [2020-02-10 23:07:19,179 INFO L130 PetriNetUnfolder]: For 243729/243887 co-relation queries the response was YES. [2020-02-10 23:07:19,202 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 23:07:19,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 859 places, 158 transitions [2020-02-10 23:07:19,225 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 816 places, 158 transitions [2020-02-10 23:07:19,225 INFO L479 AbstractCegarLoop]: Abstraction has has 816 places, 158 transitions [2020-02-10 23:07:19,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:07:19,785 INFO L129 PetriNetUnfolder]: 42/428 cut-off events. [2020-02-10 23:07:19,785 INFO L130 PetriNetUnfolder]: For 243313/243433 co-relation queries the response was YES. [2020-02-10 23:07:19,785 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:19,785 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:07:19,785 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 23:07:19,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:19,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1651410814, now seen corresponding path program 113 times [2020-02-10 23:07:19,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:19,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001898279] [2020-02-10 23:07:19,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:07:19,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001898279] [2020-02-10 23:07:19,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:19,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:07:19,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776770636] [2020-02-10 23:07:19,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:07:19,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:19,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:07:19,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:07:19,918 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:07:19,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 816 places, 158 transitions. Second operand 7 states. [2020-02-10 23:07:19,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:19,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:07:19,919 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:21,641 INFO L129 PetriNetUnfolder]: 42/435 cut-off events. [2020-02-10 23:07:21,642 INFO L130 PetriNetUnfolder]: For 249357/249799 co-relation queries the response was YES. [2020-02-10 23:07:21,664 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 23:07:21,687 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 92 selfloop transitions, 56 changer transitions 0/160 dead transitions. [2020-02-10 23:07:21,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:07:21,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:07:21,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:07:21,688 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:07:21,688 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:07:21,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:07:21,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:21,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:07:21,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:07:21,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:07:21,689 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:07:21,689 INFO L178 Difference]: Start difference. First operand has 816 places, 158 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:07:21,693 INFO L206 Difference]: Finished difference. Result has 823 places, 158 transitions [2020-02-10 23:07:21,693 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 23:07:21,693 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 823 places, 158 transitions [2020-02-10 23:07:22,316 INFO L129 PetriNetUnfolder]: 42/435 cut-off events. [2020-02-10 23:07:22,316 INFO L130 PetriNetUnfolder]: For 240242/240365 co-relation queries the response was YES. [2020-02-10 23:07:22,339 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 23:07:22,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 823 places, 158 transitions [2020-02-10 23:07:22,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 823 places, 158 transitions [2020-02-10 23:07:22,362 INFO L479 AbstractCegarLoop]: Abstraction has has 823 places, 158 transitions [2020-02-10 23:07:22,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:07:22,924 INFO L129 PetriNetUnfolder]: 42/428 cut-off events. [2020-02-10 23:07:22,924 INFO L130 PetriNetUnfolder]: For 241673/241835 co-relation queries the response was YES. [2020-02-10 23:07:22,924 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:22,924 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:07:22,925 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 23:07:22,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:22,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1952229606, now seen corresponding path program 114 times [2020-02-10 23:07:22,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:22,925 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129410122] [2020-02-10 23:07:22,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:07:23,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129410122] [2020-02-10 23:07:23,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:23,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:07:23,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799076639] [2020-02-10 23:07:23,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:07:23,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:23,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:07:23,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:07:23,062 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:07:23,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 823 places, 158 transitions. Second operand 7 states. [2020-02-10 23:07:23,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:23,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:07:23,063 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:24,792 INFO L129 PetriNetUnfolder]: 42/434 cut-off events. [2020-02-10 23:07:24,793 INFO L130 PetriNetUnfolder]: For 243493/243862 co-relation queries the response was YES. [2020-02-10 23:07:24,816 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 23:07:24,838 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 78 selfloop transitions, 70 changer transitions 0/160 dead transitions. [2020-02-10 23:07:24,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:07:24,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:07:24,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:07:24,839 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:07:24,839 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:07:24,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:07:24,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:24,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:07:24,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:07:24,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:07:24,840 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:07:24,840 INFO L178 Difference]: Start difference. First operand has 823 places, 158 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:07:24,844 INFO L206 Difference]: Finished difference. Result has 830 places, 158 transitions [2020-02-10 23:07:24,844 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 23:07:24,844 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 830 places, 158 transitions [2020-02-10 23:07:25,458 INFO L129 PetriNetUnfolder]: 42/434 cut-off events. [2020-02-10 23:07:25,458 INFO L130 PetriNetUnfolder]: For 238806/238968 co-relation queries the response was YES. [2020-02-10 23:07:25,481 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 23:07:25,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 830 places, 158 transitions [2020-02-10 23:07:25,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 830 places, 158 transitions [2020-02-10 23:07:25,503 INFO L479 AbstractCegarLoop]: Abstraction has has 830 places, 158 transitions [2020-02-10 23:07:25,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:07:26,076 INFO L129 PetriNetUnfolder]: 42/428 cut-off events. [2020-02-10 23:07:26,076 INFO L130 PetriNetUnfolder]: For 238806/238968 co-relation queries the response was YES. [2020-02-10 23:07:26,076 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:26,076 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:07:26,077 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 23:07:26,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:26,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1495311042, now seen corresponding path program 115 times [2020-02-10 23:07:26,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:26,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118955676] [2020-02-10 23:07:26,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:26,215 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 23:07:26,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118955676] [2020-02-10 23:07:26,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:26,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:07:26,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519759719] [2020-02-10 23:07:26,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:07:26,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:26,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:07:26,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:07:26,216 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:07:26,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 830 places, 158 transitions. Second operand 7 states. [2020-02-10 23:07:26,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:26,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:07:26,217 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:27,938 INFO L129 PetriNetUnfolder]: 42/433 cut-off events. [2020-02-10 23:07:27,938 INFO L130 PetriNetUnfolder]: For 241936/242554 co-relation queries the response was YES. [2020-02-10 23:07:27,961 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 23:07:27,983 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 103 selfloop transitions, 27 changer transitions 17/159 dead transitions. [2020-02-10 23:07:27,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:07:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:07:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2020-02-10 23:07:27,984 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8221024258760108 [2020-02-10 23:07:27,984 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2020-02-10 23:07:27,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2020-02-10 23:07:27,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:27,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2020-02-10 23:07:27,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:07:27,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:07:27,985 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:07:27,985 INFO L178 Difference]: Start difference. First operand has 830 places, 158 transitions. Second operand 7 states and 305 transitions. [2020-02-10 23:07:27,989 INFO L206 Difference]: Finished difference. Result has 837 places, 141 transitions [2020-02-10 23:07:27,989 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 23:07:27,989 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 837 places, 141 transitions [2020-02-10 23:07:28,515 INFO L129 PetriNetUnfolder]: 37/382 cut-off events. [2020-02-10 23:07:28,515 INFO L130 PetriNetUnfolder]: For 208957/209122 co-relation queries the response was YES. [2020-02-10 23:07:28,535 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 23:07:28,536 INFO L82 GeneralOperation]: Start removeDead. Operand has 837 places, 141 transitions [2020-02-10 23:07:28,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 823 places, 141 transitions [2020-02-10 23:07:28,555 INFO L479 AbstractCegarLoop]: Abstraction has has 823 places, 141 transitions [2020-02-10 23:07:28,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:07:29,045 INFO L129 PetriNetUnfolder]: 37/377 cut-off events. [2020-02-10 23:07:29,045 INFO L130 PetriNetUnfolder]: For 208957/209122 co-relation queries the response was YES. [2020-02-10 23:07:29,045 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:29,045 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:07:29,045 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 23:07:29,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:29,045 INFO L82 PathProgramCache]: Analyzing trace with hash 527626382, now seen corresponding path program 116 times [2020-02-10 23:07:29,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:29,046 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211002133] [2020-02-10 23:07:29,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:29,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:07:29,201 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211002133] [2020-02-10 23:07:29,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:29,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:07:29,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154644307] [2020-02-10 23:07:29,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:07:29,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:29,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:07:29,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:07:29,202 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:07:29,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 823 places, 141 transitions. Second operand 7 states. [2020-02-10 23:07:29,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:29,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:07:29,202 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:30,722 INFO L129 PetriNetUnfolder]: 37/381 cut-off events. [2020-02-10 23:07:30,722 INFO L130 PetriNetUnfolder]: For 211660/212301 co-relation queries the response was YES. [2020-02-10 23:07:30,743 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 23:07:30,761 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 71 selfloop transitions, 60 changer transitions 0/143 dead transitions. [2020-02-10 23:07:30,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:07:30,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:07:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2020-02-10 23:07:30,762 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8247978436657682 [2020-02-10 23:07:30,762 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2020-02-10 23:07:30,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2020-02-10 23:07:30,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:30,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2020-02-10 23:07:30,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:07:30,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:07:30,763 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:07:30,763 INFO L178 Difference]: Start difference. First operand has 823 places, 141 transitions. Second operand 7 states and 306 transitions. [2020-02-10 23:07:30,767 INFO L206 Difference]: Finished difference. Result has 830 places, 141 transitions [2020-02-10 23:07:30,767 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 23:07:30,767 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 830 places, 141 transitions [2020-02-10 23:07:31,326 INFO L129 PetriNetUnfolder]: 37/381 cut-off events. [2020-02-10 23:07:31,326 INFO L130 PetriNetUnfolder]: For 205244/205409 co-relation queries the response was YES. [2020-02-10 23:07:31,345 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 23:07:31,346 INFO L82 GeneralOperation]: Start removeDead. Operand has 830 places, 141 transitions [2020-02-10 23:07:31,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 830 places, 141 transitions [2020-02-10 23:07:31,361 INFO L479 AbstractCegarLoop]: Abstraction has has 830 places, 141 transitions [2020-02-10 23:07:31,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:07:31,857 INFO L129 PetriNetUnfolder]: 37/377 cut-off events. [2020-02-10 23:07:31,857 INFO L130 PetriNetUnfolder]: For 202573/202654 co-relation queries the response was YES. [2020-02-10 23:07:31,857 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:31,857 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:07:31,858 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 23:07:31,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:31,858 INFO L82 PathProgramCache]: Analyzing trace with hash -928606180, now seen corresponding path program 117 times [2020-02-10 23:07:31,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:31,858 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705118310] [2020-02-10 23:07:31,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:07:31,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705118310] [2020-02-10 23:07:31,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:31,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:07:31,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850075527] [2020-02-10 23:07:31,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:07:31,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:31,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:07:31,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:07:31,977 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:07:31,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 830 places, 141 transitions. Second operand 7 states. [2020-02-10 23:07:31,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:31,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:07:31,978 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:33,483 INFO L129 PetriNetUnfolder]: 37/380 cut-off events. [2020-02-10 23:07:33,484 INFO L130 PetriNetUnfolder]: For 207649/208202 co-relation queries the response was YES. [2020-02-10 23:07:33,504 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 23:07:33,522 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 67 selfloop transitions, 52 changer transitions 11/142 dead transitions. [2020-02-10 23:07:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:07:33,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:07:33,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2020-02-10 23:07:33,523 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8221024258760108 [2020-02-10 23:07:33,523 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2020-02-10 23:07:33,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2020-02-10 23:07:33,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:33,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2020-02-10 23:07:33,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:07:33,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:07:33,524 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:07:33,524 INFO L178 Difference]: Start difference. First operand has 830 places, 141 transitions. Second operand 7 states and 305 transitions. [2020-02-10 23:07:33,528 INFO L206 Difference]: Finished difference. Result has 837 places, 130 transitions [2020-02-10 23:07:33,528 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 23:07:33,528 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 837 places, 130 transitions [2020-02-10 23:07:33,986 INFO L129 PetriNetUnfolder]: 34/347 cut-off events. [2020-02-10 23:07:33,986 INFO L130 PetriNetUnfolder]: For 179210/179291 co-relation queries the response was YES. [2020-02-10 23:07:34,007 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 23:07:34,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 837 places, 130 transitions [2020-02-10 23:07:34,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 803 places, 130 transitions [2020-02-10 23:07:34,026 INFO L479 AbstractCegarLoop]: Abstraction has has 803 places, 130 transitions [2020-02-10 23:07:34,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:07:34,503 INFO L129 PetriNetUnfolder]: 34/344 cut-off events. [2020-02-10 23:07:34,504 INFO L130 PetriNetUnfolder]: For 179456/179553 co-relation queries the response was YES. [2020-02-10 23:07:34,504 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:34,504 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:07:34,504 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 23:07:34,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:34,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1533123864, now seen corresponding path program 118 times [2020-02-10 23:07:34,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:34,505 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071644055] [2020-02-10 23:07:34,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:07:34,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071644055] [2020-02-10 23:07:34,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:34,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:07:34,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787437786] [2020-02-10 23:07:34,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:07:34,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:34,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:07:34,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:07:34,645 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:07:34,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 803 places, 130 transitions. Second operand 7 states. [2020-02-10 23:07:34,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:34,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:07:34,645 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:35,989 INFO L129 PetriNetUnfolder]: 34/346 cut-off events. [2020-02-10 23:07:35,990 INFO L130 PetriNetUnfolder]: For 183432/183870 co-relation queries the response was YES. [2020-02-10 23:07:36,008 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 23:07:36,024 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 63 selfloop transitions, 56 changer transitions 0/131 dead transitions. [2020-02-10 23:07:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:07:36,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:07:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2020-02-10 23:07:36,025 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8221024258760108 [2020-02-10 23:07:36,025 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2020-02-10 23:07:36,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2020-02-10 23:07:36,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:36,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2020-02-10 23:07:36,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:07:36,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:07:36,026 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:07:36,026 INFO L178 Difference]: Start difference. First operand has 803 places, 130 transitions. Second operand 7 states and 305 transitions. [2020-02-10 23:07:36,029 INFO L206 Difference]: Finished difference. Result has 810 places, 130 transitions [2020-02-10 23:07:36,029 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 23:07:36,030 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 810 places, 130 transitions [2020-02-10 23:07:36,487 INFO L129 PetriNetUnfolder]: 34/346 cut-off events. [2020-02-10 23:07:36,487 INFO L130 PetriNetUnfolder]: For 175188/175285 co-relation queries the response was YES. [2020-02-10 23:07:36,506 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 23:07:36,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 810 places, 130 transitions [2020-02-10 23:07:36,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 810 places, 130 transitions [2020-02-10 23:07:36,522 INFO L479 AbstractCegarLoop]: Abstraction has has 810 places, 130 transitions [2020-02-10 23:07:36,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:07:36,969 INFO L129 PetriNetUnfolder]: 34/344 cut-off events. [2020-02-10 23:07:36,969 INFO L130 PetriNetUnfolder]: For 177177/177345 co-relation queries the response was YES. [2020-02-10 23:07:36,969 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:36,969 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:07:36,969 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 23:07:36,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:36,970 INFO L82 PathProgramCache]: Analyzing trace with hash -545035420, now seen corresponding path program 119 times [2020-02-10 23:07:36,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:36,970 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792913159] [2020-02-10 23:07:36,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:07:37,115 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792913159] [2020-02-10 23:07:37,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:37,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:07:37,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117941191] [2020-02-10 23:07:37,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:07:37,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:37,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:07:37,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:07:37,117 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:07:37,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 130 transitions. Second operand 7 states. [2020-02-10 23:07:37,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:37,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:07:37,117 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:38,460 INFO L129 PetriNetUnfolder]: 34/345 cut-off events. [2020-02-10 23:07:38,460 INFO L130 PetriNetUnfolder]: For 181935/182462 co-relation queries the response was YES. [2020-02-10 23:07:38,480 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 23:07:38,496 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 72 selfloop transitions, 42 changer transitions 4/130 dead transitions. [2020-02-10 23:07:38,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:07:38,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:07:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 303 transitions. [2020-02-10 23:07:38,497 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.816711590296496 [2020-02-10 23:07:38,497 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 303 transitions. [2020-02-10 23:07:38,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 303 transitions. [2020-02-10 23:07:38,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:38,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 303 transitions. [2020-02-10 23:07:38,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:07:38,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:07:38,498 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:07:38,498 INFO L178 Difference]: Start difference. First operand has 810 places, 130 transitions. Second operand 7 states and 303 transitions. [2020-02-10 23:07:38,501 INFO L206 Difference]: Finished difference. Result has 817 places, 126 transitions [2020-02-10 23:07:38,501 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 23:07:38,501 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 817 places, 126 transitions [2020-02-10 23:07:38,928 INFO L129 PetriNetUnfolder]: 33/334 cut-off events. [2020-02-10 23:07:38,928 INFO L130 PetriNetUnfolder]: For 166107/166253 co-relation queries the response was YES. [2020-02-10 23:07:38,947 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 23:07:38,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 817 places, 126 transitions [2020-02-10 23:07:38,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 798 places, 126 transitions [2020-02-10 23:07:38,962 INFO L479 AbstractCegarLoop]: Abstraction has has 798 places, 126 transitions [2020-02-10 23:07:38,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:07:39,395 INFO L129 PetriNetUnfolder]: 33/333 cut-off events. [2020-02-10 23:07:39,395 INFO L130 PetriNetUnfolder]: For 166107/166248 co-relation queries the response was YES. [2020-02-10 23:07:39,395 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:07:39,396 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:07:39,396 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 23:07:39,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:07:39,396 INFO L82 PathProgramCache]: Analyzing trace with hash -475463900, now seen corresponding path program 120 times [2020-02-10 23:07:39,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:07:39,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022999062] [2020-02-10 23:07:39,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:07:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:07:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:07:39,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022999062] [2020-02-10 23:07:39,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:07:39,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-02-10 23:07:39,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898307869] [2020-02-10 23:07:39,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-02-10 23:07:39,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:07:39,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-02-10 23:07:39,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-02-10 23:07:39,530 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 53 [2020-02-10 23:07:39,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 798 places, 126 transitions. Second operand 7 states. [2020-02-10 23:07:39,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:07:39,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 53 [2020-02-10 23:07:39,531 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:07:40,839 INFO L129 PetriNetUnfolder]: 33/333 cut-off events. [2020-02-10 23:07:40,839 INFO L130 PetriNetUnfolder]: For 169981/170405 co-relation queries the response was YES. [2020-02-10 23:07:40,857 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 23:07:40,861 INFO L145 encePairwiseOnDemand]: 47/53 looper letters, 0 selfloop transitions, 0 changer transitions 125/125 dead transitions. [2020-02-10 23:07:40,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-02-10 23:07:40,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-02-10 23:07:40,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2020-02-10 23:07:40,862 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8140161725067385 [2020-02-10 23:07:40,862 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 302 transitions. [2020-02-10 23:07:40,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 302 transitions. [2020-02-10 23:07:40,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:07:40,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 302 transitions. [2020-02-10 23:07:40,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-02-10 23:07:40,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-02-10 23:07:40,863 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-02-10 23:07:40,863 INFO L178 Difference]: Start difference. First operand has 798 places, 126 transitions. Second operand 7 states and 302 transitions. [2020-02-10 23:07:40,863 INFO L206 Difference]: Finished difference. Result has 804 places, 0 transitions [2020-02-10 23:07:40,863 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 23:07:40,863 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 804 places, 0 transitions [2020-02-10 23:07:40,874 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2020-02-10 23:07:40,874 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-02-10 23:07:40,874 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 23:07:40,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 804 places, 0 transitions [2020-02-10 23:07:40,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions [2020-02-10 23:07:40,874 INFO L479 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions [2020-02-10 23:07:40,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-02-10 23:07:40,875 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2020-02-10 23:07:40,875 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-02-10 23:07:40,879 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:07:40 BasicIcfg [2020-02-10 23:07:40,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 23:07:40,881 INFO L168 Benchmark]: Toolchain (without parser) took 456448.20 ms. Allocated memory was 141.6 MB in the beginning and 2.7 GB in the end (delta: 2.6 GB). Free memory was 122.2 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-02-10 23:07:40,882 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.40 ms. Allocated memory is still 141.6 MB. Free memory was 123.5 MB in the beginning and 123.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-10 23:07:40,882 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.70 ms. Allocated memory is still 141.6 MB. Free memory was 122.0 MB in the beginning and 120.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-02-10 23:07:40,882 INFO L168 Benchmark]: Boogie Preprocessor took 22.91 ms. Allocated memory is still 141.6 MB. Free memory was 120.2 MB in the beginning and 119.3 MB in the end (delta: 933.8 kB). Peak memory consumption was 933.8 kB. Max. memory is 7.1 GB. [2020-02-10 23:07:40,883 INFO L168 Benchmark]: RCFGBuilder took 304.07 ms. Allocated memory is still 141.6 MB. Free memory was 119.1 MB in the beginning and 108.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-02-10 23:07:40,883 INFO L168 Benchmark]: TraceAbstraction took 456074.76 ms. Allocated memory was 141.6 MB in the beginning and 2.7 GB in the end (delta: 2.6 GB). Free memory was 107.5 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-02-10 23:07:40,885 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 0.40 ms. Allocated memory is still 141.6 MB. Free memory was 123.5 MB in the beginning and 123.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.70 ms. Allocated memory is still 141.6 MB. Free memory was 122.0 MB in the beginning and 120.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.91 ms. Allocated memory is still 141.6 MB. Free memory was 120.2 MB in the beginning and 119.3 MB in the end (delta: 933.8 kB). Peak memory consumption was 933.8 kB. Max. memory is 7.1 GB. * RCFGBuilder took 304.07 ms. Allocated memory is still 141.6 MB. Free memory was 119.1 MB in the beginning and 108.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 456074.76 ms. Allocated memory was 141.6 MB in the beginning and 2.7 GB in the end (delta: 2.6 GB). Free memory was 107.5 MB in the beginning and 2.4 GB in the end (delta: -2.3 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: 455.8s, OverallIterations: 123, TraceHistogramMax: 1, AutomataDifference: 243.8s, 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, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 849 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 723 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 20.8s 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: 118.1s AutomataMinimizationTime, 123 MinimizatonAttempts, 995 StatesRemovedByMinimization, 123 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 18.9s 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...