/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-10 23:28:38,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 23:28:38,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 23:28:38,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 23:28:38,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 23:28:38,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 23:28:38,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 23:28:38,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 23:28:38,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 23:28:38,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 23:28:38,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 23:28:38,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 23:28:38,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 23:28:38,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 23:28:38,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 23:28:38,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 23:28:38,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 23:28:38,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 23:28:38,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 23:28:38,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 23:28:38,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 23:28:38,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 23:28:38,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 23:28:38,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 23:28:38,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-10 23:28:38,229 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2020-02-10 23:28:38,250 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 23:28:38,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 23:28:38,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 23:28:38,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 23:28:38,252 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 23:28:38,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 23:28:38,253 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 23:28:38,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 23:28:38,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 23:28:38,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 23:28:38,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 23:28:38,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 23:28:38,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 23:28:38,255 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 23:28:38,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 23:28:38,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 23:28:38,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 23:28:38,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 23:28:38,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 23:28:38,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 23:28:38,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 23:28:38,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:28:38,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 23:28:38,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 23:28:38,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 23:28:38,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 23:28:38,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 23:28:38,258 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-02-10 23:28:38,258 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-10 23:28:38,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 23:28:38,581 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 23:28:38,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 23:28:38,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 23:28:38,610 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 23:28:38,611 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 23:28:38,612 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2020-02-10 23:28:38,613 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2020-02-10 23:28:38,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 23:28:38,655 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 23:28:38,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 23:28:38,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 23:28:38,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 23:28:38,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:38" (1/1) ... [2020-02-10 23:28:38,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:38" (1/1) ... [2020-02-10 23:28:38,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 23:28:38,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 23:28:38,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 23:28:38,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 23:28:38,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:38" (1/1) ... [2020-02-10 23:28:38,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:38" (1/1) ... [2020-02-10 23:28:38,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:38" (1/1) ... [2020-02-10 23:28:38,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:38" (1/1) ... [2020-02-10 23:28:38,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:38" (1/1) ... [2020-02-10 23:28:38,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:38" (1/1) ... [2020-02-10 23:28:38,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:38" (1/1) ... [2020-02-10 23:28:38,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 23:28:38,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 23:28:38,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 23:28:38,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 23:28:38,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:28:38,780 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 23:28:38,780 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 23:28:38,782 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 23:28:38,783 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 23:28:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 23:28:38,783 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 23:28:38,783 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-10 23:28:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-10 23:28:38,784 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-10 23:28:38,784 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-02-10 23:28:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-02-10 23:28:38,785 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-02-10 23:28:38,785 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 23:28:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 23:28:38,785 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 23:28:38,785 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 23:28:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 23:28:38,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 23:28:38,786 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-02-10 23:28:38,786 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-02-10 23:28:38,786 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-02-10 23:28:38,787 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-10 23:28:39,026 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 23:28:39,026 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 23:28:39,030 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:28:39 BoogieIcfgContainer [2020-02-10 23:28:39,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 23:28:39,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 23:28:39,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 23:28:39,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 23:28:39,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:38" (1/2) ... [2020-02-10 23:28:39,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37535088 and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:28:39, skipping insertion in model container [2020-02-10 23:28:39,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:28:39" (2/2) ... [2020-02-10 23:28:39,048 INFO L109 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2020-02-10 23:28:39,072 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 23:28:39,086 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 23:28:39,088 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 23:28:39,305 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-02-10 23:28:39,334 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 23:28:39,335 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-10 23:28:39,335 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 23:28:39,335 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-02-10 23:28:39,336 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 23:28:39,336 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 23:28:39,336 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 23:28:39,336 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 23:28:39,357 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 52 places, 63 transitions [2020-02-10 23:28:39,491 INFO L129 PetriNetUnfolder]: 129/213 cut-off events. [2020-02-10 23:28:39,492 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2020-02-10 23:28:39,504 INFO L76 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 213 events. 129/213 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 773 event pairs. 0/212 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2020-02-10 23:28:39,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 63 transitions [2020-02-10 23:28:39,517 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 55 transitions [2020-02-10 23:28:39,522 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 55 transitions [2020-02-10 23:28:39,523 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 55 transitions [2020-02-10 23:28:39,581 INFO L129 PetriNetUnfolder]: 129/211 cut-off events. [2020-02-10 23:28:39,582 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2020-02-10 23:28:39,586 INFO L76 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 211 events. 129/211 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 680 event pairs. 0/211 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2020-02-10 23:28:39,597 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 55 transitions [2020-02-10 23:28:39,667 INFO L129 PetriNetUnfolder]: 129/211 cut-off events. [2020-02-10 23:28:39,667 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2020-02-10 23:28:39,669 INFO L76 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 211 events. 129/211 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 680 event pairs. 0/211 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2020-02-10 23:28:39,673 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 780 [2020-02-10 23:28:39,674 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-02-10 23:28:39,739 INFO L206 etLargeBlockEncoding]: Checked pairs total: 225 [2020-02-10 23:28:39,739 INFO L214 etLargeBlockEncoding]: Total number of compositions: 6 [2020-02-10 23:28:39,739 INFO L160 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 221 [2020-02-10 23:28:39,769 INFO L129 PetriNetUnfolder]: 129/204 cut-off events. [2020-02-10 23:28:39,769 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2020-02-10 23:28:39,769 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:39,770 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:39,771 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:39,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:39,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1634021592, now seen corresponding path program 1 times [2020-02-10 23:28:39,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:39,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666660879] [2020-02-10 23:28:39,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:39,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666660879] [2020-02-10 23:28:39,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:39,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:39,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970069976] [2020-02-10 23:28:39,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:39,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:39,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:39,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:39,956 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 69 [2020-02-10 23:28:39,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 49 transitions. Second operand 3 states. [2020-02-10 23:28:39,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:39,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 69 [2020-02-10 23:28:39,960 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:40,019 INFO L129 PetriNetUnfolder]: 124/199 cut-off events. [2020-02-10 23:28:40,019 INFO L130 PetriNetUnfolder]: For 252/252 co-relation queries the response was YES. [2020-02-10 23:28:40,021 INFO L76 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 199 events. 124/199 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 666 event pairs. 1/200 useless extension candidates. Maximal degree in co-relation 187. Up to 60 conditions per place. [2020-02-10 23:28:40,026 INFO L145 encePairwiseOnDemand]: 67/69 looper letters, 5 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2020-02-10 23:28:40,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:40,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:40,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2020-02-10 23:28:40,041 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9323671497584541 [2020-02-10 23:28:40,042 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2020-02-10 23:28:40,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2020-02-10 23:28:40,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:40,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2020-02-10 23:28:40,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:40,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:40,056 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:40,058 INFO L178 Difference]: Start difference. First operand has 38 places, 49 transitions. Second operand 3 states and 193 transitions. [2020-02-10 23:28:40,060 INFO L206 Difference]: Finished difference. Result has 40 places, 48 transitions [2020-02-10 23:28:40,062 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=40, PETRI_TRANSITIONS=48} [2020-02-10 23:28:40,063 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 40 places, 48 transitions [2020-02-10 23:28:40,084 INFO L129 PetriNetUnfolder]: 124/199 cut-off events. [2020-02-10 23:28:40,084 INFO L130 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2020-02-10 23:28:40,085 INFO L76 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 199 events. 124/199 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 578 event pairs. 0/199 useless extension candidates. Maximal degree in co-relation 391. Up to 60 conditions per place. [2020-02-10 23:28:40,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 48 transitions [2020-02-10 23:28:40,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 48 transitions [2020-02-10 23:28:40,090 INFO L479 AbstractCegarLoop]: Abstraction has has 40 places, 48 transitions [2020-02-10 23:28:40,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:40,112 INFO L129 PetriNetUnfolder]: 124/198 cut-off events. [2020-02-10 23:28:40,112 INFO L130 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2020-02-10 23:28:40,112 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:40,112 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:40,113 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:40,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:40,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1482893416, now seen corresponding path program 1 times [2020-02-10 23:28:40,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:40,114 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81576066] [2020-02-10 23:28:40,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:40,150 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81576066] [2020-02-10 23:28:40,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:40,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:40,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354104452] [2020-02-10 23:28:40,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:40,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:40,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:40,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:40,159 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 69 [2020-02-10 23:28:40,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 48 transitions. Second operand 3 states. [2020-02-10 23:28:40,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:40,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 69 [2020-02-10 23:28:40,161 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:40,201 INFO L129 PetriNetUnfolder]: 50/99 cut-off events. [2020-02-10 23:28:40,202 INFO L130 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2020-02-10 23:28:40,203 INFO L76 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 99 events. 50/99 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 292 event pairs. 25/124 useless extension candidates. Maximal degree in co-relation 198. Up to 30 conditions per place. [2020-02-10 23:28:40,206 INFO L145 encePairwiseOnDemand]: 64/69 looper letters, 2 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2020-02-10 23:28:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2020-02-10 23:28:40,215 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9323671497584541 [2020-02-10 23:28:40,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2020-02-10 23:28:40,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2020-02-10 23:28:40,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:40,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2020-02-10 23:28:40,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:40,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:40,228 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:40,228 INFO L178 Difference]: Start difference. First operand has 40 places, 48 transitions. Second operand 3 states and 193 transitions. [2020-02-10 23:28:40,229 INFO L206 Difference]: Finished difference. Result has 42 places, 44 transitions [2020-02-10 23:28:40,230 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2020-02-10 23:28:40,231 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 42 places, 44 transitions [2020-02-10 23:28:40,249 INFO L129 PetriNetUnfolder]: 50/99 cut-off events. [2020-02-10 23:28:40,250 INFO L130 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2020-02-10 23:28:40,251 INFO L76 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 99 events. 50/99 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 249 event pairs. 0/99 useless extension candidates. Maximal degree in co-relation 192. Up to 30 conditions per place. [2020-02-10 23:28:40,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 44 transitions [2020-02-10 23:28:40,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 44 transitions [2020-02-10 23:28:40,255 INFO L479 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions [2020-02-10 23:28:40,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:40,268 INFO L129 PetriNetUnfolder]: 50/98 cut-off events. [2020-02-10 23:28:40,269 INFO L130 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2020-02-10 23:28:40,269 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:40,269 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:40,269 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:40,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:40,270 INFO L82 PathProgramCache]: Analyzing trace with hash -651423530, now seen corresponding path program 1 times [2020-02-10 23:28:40,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:40,271 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610618311] [2020-02-10 23:28:40,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:40,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610618311] [2020-02-10 23:28:40,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:40,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:40,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660584746] [2020-02-10 23:28:40,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:40,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:40,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:40,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:40,317 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 69 [2020-02-10 23:28:40,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions. Second operand 3 states. [2020-02-10 23:28:40,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:40,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 69 [2020-02-10 23:28:40,318 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:40,350 INFO L129 PetriNetUnfolder]: 35/79 cut-off events. [2020-02-10 23:28:40,351 INFO L130 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2020-02-10 23:28:40,351 INFO L76 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 79 events. 35/79 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 209 event pairs. 4/83 useless extension candidates. Maximal degree in co-relation 165. Up to 20 conditions per place. [2020-02-10 23:28:40,353 INFO L145 encePairwiseOnDemand]: 66/69 looper letters, 4 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2020-02-10 23:28:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:40,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2020-02-10 23:28:40,355 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9323671497584541 [2020-02-10 23:28:40,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2020-02-10 23:28:40,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2020-02-10 23:28:40,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:40,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2020-02-10 23:28:40,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:40,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:40,358 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:40,358 INFO L178 Difference]: Start difference. First operand has 42 places, 44 transitions. Second operand 3 states and 193 transitions. [2020-02-10 23:28:40,359 INFO L206 Difference]: Finished difference. Result has 44 places, 42 transitions [2020-02-10 23:28:40,359 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2020-02-10 23:28:40,359 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions [2020-02-10 23:28:40,368 INFO L129 PetriNetUnfolder]: 35/79 cut-off events. [2020-02-10 23:28:40,368 INFO L130 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2020-02-10 23:28:40,369 INFO L76 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 79 events. 35/79 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 188 event pairs. 0/79 useless extension candidates. Maximal degree in co-relation 153. Up to 20 conditions per place. [2020-02-10 23:28:40,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 42 transitions [2020-02-10 23:28:40,371 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 42 transitions [2020-02-10 23:28:40,371 INFO L479 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions [2020-02-10 23:28:40,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:40,379 INFO L129 PetriNetUnfolder]: 35/78 cut-off events. [2020-02-10 23:28:40,380 INFO L130 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2020-02-10 23:28:40,380 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:40,380 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:40,380 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:40,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:40,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1855751296, now seen corresponding path program 1 times [2020-02-10 23:28:40,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:40,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073937380] [2020-02-10 23:28:40,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:40,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073937380] [2020-02-10 23:28:40,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:40,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:40,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457829289] [2020-02-10 23:28:40,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:40,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:40,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:40,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:40,424 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 69 [2020-02-10 23:28:40,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions. Second operand 3 states. [2020-02-10 23:28:40,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:40,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 69 [2020-02-10 23:28:40,425 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:40,442 INFO L129 PetriNetUnfolder]: 6/31 cut-off events. [2020-02-10 23:28:40,442 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2020-02-10 23:28:40,442 INFO L76 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 31 events. 6/31 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs. 11/42 useless extension candidates. Maximal degree in co-relation 59. Up to 6 conditions per place. [2020-02-10 23:28:40,444 INFO L145 encePairwiseOnDemand]: 63/69 looper letters, 1 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2020-02-10 23:28:40,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:40,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2020-02-10 23:28:40,445 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9323671497584541 [2020-02-10 23:28:40,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2020-02-10 23:28:40,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2020-02-10 23:28:40,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:40,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2020-02-10 23:28:40,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:40,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:40,448 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:40,448 INFO L178 Difference]: Start difference. First operand has 44 places, 42 transitions. Second operand 3 states and 193 transitions. [2020-02-10 23:28:40,448 INFO L206 Difference]: Finished difference. Result has 46 places, 28 transitions [2020-02-10 23:28:40,449 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=46, PETRI_TRANSITIONS=28} [2020-02-10 23:28:40,449 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 46 places, 28 transitions [2020-02-10 23:28:40,453 INFO L129 PetriNetUnfolder]: 6/31 cut-off events. [2020-02-10 23:28:40,454 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-02-10 23:28:40,454 INFO L76 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 31 events. 6/31 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs. 0/31 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2020-02-10 23:28:40,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 28 transitions [2020-02-10 23:28:40,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 28 transitions [2020-02-10 23:28:40,455 INFO L479 AbstractCegarLoop]: Abstraction has has 46 places, 28 transitions [2020-02-10 23:28:40,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:40,460 INFO L129 PetriNetUnfolder]: 6/30 cut-off events. [2020-02-10 23:28:40,460 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-02-10 23:28:40,460 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:40,460 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:40,461 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:40,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:40,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2129609428, now seen corresponding path program 1 times [2020-02-10 23:28:40,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:40,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096452648] [2020-02-10 23:28:40,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:40,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096452648] [2020-02-10 23:28:40,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:40,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:40,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902447700] [2020-02-10 23:28:40,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:40,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:40,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:40,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:40,486 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 69 [2020-02-10 23:28:40,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 28 transitions. Second operand 3 states. [2020-02-10 23:28:40,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:40,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 69 [2020-02-10 23:28:40,487 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:40,504 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2020-02-10 23:28:40,504 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-02-10 23:28:40,505 INFO L76 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 19 events. 0/19 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs. 3/22 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2020-02-10 23:28:40,506 INFO L145 encePairwiseOnDemand]: 65/69 looper letters, 1 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2020-02-10 23:28:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2020-02-10 23:28:40,508 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2020-02-10 23:28:40,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 191 transitions. [2020-02-10 23:28:40,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 191 transitions. [2020-02-10 23:28:40,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:40,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 191 transitions. [2020-02-10 23:28:40,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:40,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:40,512 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:40,512 INFO L178 Difference]: Start difference. First operand has 46 places, 28 transitions. Second operand 3 states and 191 transitions. [2020-02-10 23:28:40,512 INFO L206 Difference]: Finished difference. Result has 48 places, 19 transitions [2020-02-10 23:28:40,513 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=48, PETRI_TRANSITIONS=19} [2020-02-10 23:28:40,513 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 48 places, 19 transitions [2020-02-10 23:28:40,516 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2020-02-10 23:28:40,516 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-02-10 23:28:40,517 INFO L76 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 19 events. 0/19 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs. 0/19 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2020-02-10 23:28:40,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 19 transitions [2020-02-10 23:28:40,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 19 transitions [2020-02-10 23:28:40,518 INFO L479 AbstractCegarLoop]: Abstraction has has 48 places, 19 transitions [2020-02-10 23:28:40,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:40,522 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2020-02-10 23:28:40,522 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-02-10 23:28:40,522 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:40,523 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:40,523 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:40,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:40,523 INFO L82 PathProgramCache]: Analyzing trace with hash 455935654, now seen corresponding path program 1 times [2020-02-10 23:28:40,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:40,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742290479] [2020-02-10 23:28:40,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:40,978 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742290479] [2020-02-10 23:28:40,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:40,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:28:40,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388813522] [2020-02-10 23:28:40,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:28:40,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:40,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:28:40,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:28:40,981 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:28:40,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 19 transitions. Second operand 8 states. [2020-02-10 23:28:40,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:40,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:28:40,982 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:41,190 INFO L129 PetriNetUnfolder]: 147/326 cut-off events. [2020-02-10 23:28:41,190 INFO L130 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2020-02-10 23:28:41,195 INFO L76 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 326 events. 147/326 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1663 event pairs. 1/301 useless extension candidates. Maximal degree in co-relation 656. Up to 97 conditions per place. [2020-02-10 23:28:41,201 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 20 selfloop transitions, 5 changer transitions 1/38 dead transitions. [2020-02-10 23:28:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:28:41,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:28:41,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:28:41,204 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:28:41,204 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:28:41,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:28:41,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:41,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:28:41,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:28:41,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:28:41,208 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:28:41,208 INFO L178 Difference]: Start difference. First operand has 48 places, 19 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:28:41,209 INFO L206 Difference]: Finished difference. Result has 61 places, 23 transitions [2020-02-10 23:28:41,209 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=123, PETRI_PLACES=61, PETRI_TRANSITIONS=23} [2020-02-10 23:28:41,209 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 61 places, 23 transitions [2020-02-10 23:28:41,218 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2020-02-10 23:28:41,218 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2020-02-10 23:28:41,219 INFO L76 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 55 events. 0/55 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 193 event pairs. 0/48 useless extension candidates. Maximal degree in co-relation 122. Up to 7 conditions per place. [2020-02-10 23:28:41,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 23 transitions [2020-02-10 23:28:41,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 23 transitions [2020-02-10 23:28:41,221 INFO L479 AbstractCegarLoop]: Abstraction has has 60 places, 23 transitions [2020-02-10 23:28:41,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:28:41,229 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2020-02-10 23:28:41,229 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2020-02-10 23:28:41,229 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:41,230 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:41,230 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:41,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:41,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1734129776, now seen corresponding path program 2 times [2020-02-10 23:28:41,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:41,231 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267646250] [2020-02-10 23:28:41,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:41,594 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267646250] [2020-02-10 23:28:41,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:41,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:28:41,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719338691] [2020-02-10 23:28:41,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:28:41,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:41,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:28:41,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:28:41,598 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:28:41,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 23 transitions. Second operand 8 states. [2020-02-10 23:28:41,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:41,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:28:41,599 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:41,800 INFO L129 PetriNetUnfolder]: 167/474 cut-off events. [2020-02-10 23:28:41,800 INFO L130 PetriNetUnfolder]: For 560/574 co-relation queries the response was YES. [2020-02-10 23:28:41,806 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1356 conditions, 474 events. 167/474 cut-off events. For 560/574 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3172 event pairs. 1/448 useless extension candidates. Maximal degree in co-relation 1329. Up to 134 conditions per place. [2020-02-10 23:28:41,817 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 23 selfloop transitions, 8 changer transitions 1/44 dead transitions. [2020-02-10 23:28:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:28:41,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:28:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:28:41,820 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:28:41,820 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:28:41,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:28:41,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:41,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:28:41,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:28:41,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:28:41,825 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:28:41,827 INFO L178 Difference]: Start difference. First operand has 60 places, 23 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:28:41,830 INFO L206 Difference]: Finished difference. Result has 73 places, 29 transitions [2020-02-10 23:28:41,831 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=200, PETRI_PLACES=73, PETRI_TRANSITIONS=29} [2020-02-10 23:28:41,831 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 73 places, 29 transitions [2020-02-10 23:28:41,851 INFO L129 PetriNetUnfolder]: 0/134 cut-off events. [2020-02-10 23:28:41,851 INFO L130 PetriNetUnfolder]: For 200/204 co-relation queries the response was YES. [2020-02-10 23:28:41,852 INFO L76 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 134 events. 0/134 cut-off events. For 200/204 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 843 event pairs. 0/118 useless extension candidates. Maximal degree in co-relation 352. Up to 17 conditions per place. [2020-02-10 23:28:41,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 29 transitions [2020-02-10 23:28:41,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 29 transitions [2020-02-10 23:28:41,859 INFO L479 AbstractCegarLoop]: Abstraction has has 72 places, 29 transitions [2020-02-10 23:28:41,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:28:41,880 INFO L129 PetriNetUnfolder]: 0/120 cut-off events. [2020-02-10 23:28:41,881 INFO L130 PetriNetUnfolder]: For 200/204 co-relation queries the response was YES. [2020-02-10 23:28:41,881 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:41,881 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:41,881 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:41,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:41,882 INFO L82 PathProgramCache]: Analyzing trace with hash -2033581502, now seen corresponding path program 3 times [2020-02-10 23:28:41,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:41,883 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285641458] [2020-02-10 23:28:41,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:42,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:42,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285641458] [2020-02-10 23:28:42,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:42,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:28:42,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475372409] [2020-02-10 23:28:42,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:28:42,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:42,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:28:42,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:28:42,228 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:28:42,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 29 transitions. Second operand 8 states. [2020-02-10 23:28:42,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:42,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:28:42,229 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:42,478 INFO L129 PetriNetUnfolder]: 179/578 cut-off events. [2020-02-10 23:28:42,479 INFO L130 PetriNetUnfolder]: For 1806/1830 co-relation queries the response was YES. [2020-02-10 23:28:42,484 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2103 conditions, 578 events. 179/578 cut-off events. For 1806/1830 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4060 event pairs. 1/550 useless extension candidates. Maximal degree in co-relation 2069. Up to 180 conditions per place. [2020-02-10 23:28:42,499 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 45 selfloop transitions, 7 changer transitions 1/65 dead transitions. [2020-02-10 23:28:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:28:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:28:42,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:28:42,502 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:28:42,502 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:28:42,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:28:42,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:42,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:28:42,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:28:42,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:28:42,505 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:28:42,506 INFO L178 Difference]: Start difference. First operand has 72 places, 29 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:28:42,506 INFO L206 Difference]: Finished difference. Result has 85 places, 35 transitions [2020-02-10 23:28:42,507 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=289, PETRI_PLACES=85, PETRI_TRANSITIONS=35} [2020-02-10 23:28:42,507 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 85 places, 35 transitions [2020-02-10 23:28:42,553 INFO L129 PetriNetUnfolder]: 0/231 cut-off events. [2020-02-10 23:28:42,553 INFO L130 PetriNetUnfolder]: For 553/577 co-relation queries the response was YES. [2020-02-10 23:28:42,555 INFO L76 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 231 events. 0/231 cut-off events. For 553/577 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1859 event pairs. 0/206 useless extension candidates. Maximal degree in co-relation 678. Up to 29 conditions per place. [2020-02-10 23:28:42,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 35 transitions [2020-02-10 23:28:42,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 35 transitions [2020-02-10 23:28:42,560 INFO L479 AbstractCegarLoop]: Abstraction has has 84 places, 35 transitions [2020-02-10 23:28:42,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:28:42,593 INFO L129 PetriNetUnfolder]: 0/205 cut-off events. [2020-02-10 23:28:42,593 INFO L130 PetriNetUnfolder]: For 553/577 co-relation queries the response was YES. [2020-02-10 23:28:42,593 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:42,593 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:42,593 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:42,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:42,594 INFO L82 PathProgramCache]: Analyzing trace with hash 376307292, now seen corresponding path program 4 times [2020-02-10 23:28:42,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:42,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571250459] [2020-02-10 23:28:42,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:42,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571250459] [2020-02-10 23:28:42,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:42,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:28:42,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113723430] [2020-02-10 23:28:42,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:28:42,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:42,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:28:42,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:28:42,925 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:28:42,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 35 transitions. Second operand 8 states. [2020-02-10 23:28:42,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:42,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:28:42,926 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:43,254 INFO L129 PetriNetUnfolder]: 182/795 cut-off events. [2020-02-10 23:28:43,255 INFO L130 PetriNetUnfolder]: For 3659/3722 co-relation queries the response was YES. [2020-02-10 23:28:43,264 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 795 events. 182/795 cut-off events. For 3659/3722 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6962 event pairs. 1/768 useless extension candidates. Maximal degree in co-relation 3071. Up to 197 conditions per place. [2020-02-10 23:28:43,284 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 45 selfloop transitions, 13 changer transitions 1/71 dead transitions. [2020-02-10 23:28:43,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:28:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:28:43,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:28:43,287 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:28:43,288 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:28:43,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:28:43,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:43,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:28:43,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:28:43,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:28:43,292 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:28:43,292 INFO L178 Difference]: Start difference. First operand has 84 places, 35 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:28:43,293 INFO L206 Difference]: Finished difference. Result has 97 places, 41 transitions [2020-02-10 23:28:43,293 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=97, PETRI_TRANSITIONS=41} [2020-02-10 23:28:43,294 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 97 places, 41 transitions [2020-02-10 23:28:43,411 INFO L129 PetriNetUnfolder]: 0/422 cut-off events. [2020-02-10 23:28:43,411 INFO L130 PetriNetUnfolder]: For 1836/1946 co-relation queries the response was YES. [2020-02-10 23:28:43,416 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1479 conditions, 422 events. 0/422 cut-off events. For 1836/1946 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4182 event pairs. 5/385 useless extension candidates. Maximal degree in co-relation 1432. Up to 52 conditions per place. [2020-02-10 23:28:43,417 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 41 transitions [2020-02-10 23:28:43,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 41 transitions [2020-02-10 23:28:43,423 INFO L479 AbstractCegarLoop]: Abstraction has has 96 places, 41 transitions [2020-02-10 23:28:43,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:28:43,484 INFO L129 PetriNetUnfolder]: 0/373 cut-off events. [2020-02-10 23:28:43,484 INFO L130 PetriNetUnfolder]: For 1837/1947 co-relation queries the response was YES. [2020-02-10 23:28:43,485 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:43,485 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:43,485 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:43,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:43,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1813429344, now seen corresponding path program 5 times [2020-02-10 23:28:43,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:43,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279311566] [2020-02-10 23:28:43,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:43,754 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279311566] [2020-02-10 23:28:43,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:43,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:28:43,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809765248] [2020-02-10 23:28:43,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:28:43,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:43,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:28:43,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:28:43,756 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:28:43,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 41 transitions. Second operand 8 states. [2020-02-10 23:28:43,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:43,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:28:43,757 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:44,196 INFO L129 PetriNetUnfolder]: 179/809 cut-off events. [2020-02-10 23:28:44,196 INFO L130 PetriNetUnfolder]: For 5699/5749 co-relation queries the response was YES. [2020-02-10 23:28:44,204 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3606 conditions, 809 events. 179/809 cut-off events. For 5699/5749 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7167 event pairs. 1/782 useless extension candidates. Maximal degree in co-relation 3558. Up to 197 conditions per place. [2020-02-10 23:28:44,223 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 45 selfloop transitions, 13 changer transitions 1/71 dead transitions. [2020-02-10 23:28:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:28:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:28:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:28:44,226 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:28:44,226 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:28:44,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:28:44,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:44,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:28:44,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:28:44,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:28:44,229 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:28:44,229 INFO L178 Difference]: Start difference. First operand has 96 places, 41 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:28:44,230 INFO L206 Difference]: Finished difference. Result has 106 places, 42 transitions [2020-02-10 23:28:44,231 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=452, PETRI_PLACES=106, PETRI_TRANSITIONS=42} [2020-02-10 23:28:44,231 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 106 places, 42 transitions [2020-02-10 23:28:44,323 INFO L129 PetriNetUnfolder]: 0/443 cut-off events. [2020-02-10 23:28:44,323 INFO L130 PetriNetUnfolder]: For 2382/2507 co-relation queries the response was YES. [2020-02-10 23:28:44,328 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 443 events. 0/443 cut-off events. For 2382/2507 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4461 event pairs. 5/407 useless extension candidates. Maximal degree in co-relation 1610. Up to 54 conditions per place. [2020-02-10 23:28:44,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 42 transitions [2020-02-10 23:28:44,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 42 transitions [2020-02-10 23:28:44,339 INFO L479 AbstractCegarLoop]: Abstraction has has 105 places, 42 transitions [2020-02-10 23:28:44,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:28:44,420 INFO L129 PetriNetUnfolder]: 0/392 cut-off events. [2020-02-10 23:28:44,420 INFO L130 PetriNetUnfolder]: For 2382/2507 co-relation queries the response was YES. [2020-02-10 23:28:44,420 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:44,420 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:44,420 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:44,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:44,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1449392672, now seen corresponding path program 6 times [2020-02-10 23:28:44,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:44,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561578583] [2020-02-10 23:28:44,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:44,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561578583] [2020-02-10 23:28:44,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:44,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:28:44,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235326512] [2020-02-10 23:28:44,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:28:44,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:44,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:28:44,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:28:44,679 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:28:44,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 42 transitions. Second operand 8 states. [2020-02-10 23:28:44,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:44,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:28:44,679 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:45,160 INFO L129 PetriNetUnfolder]: 179/799 cut-off events. [2020-02-10 23:28:45,160 INFO L130 PetriNetUnfolder]: For 6606/6656 co-relation queries the response was YES. [2020-02-10 23:28:45,171 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3839 conditions, 799 events. 179/799 cut-off events. For 6606/6656 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7159 event pairs. 1/768 useless extension candidates. Maximal degree in co-relation 3787. Up to 197 conditions per place. [2020-02-10 23:28:45,194 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 46 selfloop transitions, 15 changer transitions 1/74 dead transitions. [2020-02-10 23:28:45,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:28:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:28:45,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:28:45,197 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:28:45,197 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:28:45,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:28:45,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:45,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:28:45,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:28:45,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:28:45,201 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:28:45,201 INFO L178 Difference]: Start difference. First operand has 105 places, 42 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:28:45,202 INFO L206 Difference]: Finished difference. Result has 115 places, 45 transitions [2020-02-10 23:28:45,203 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=534, PETRI_PLACES=115, PETRI_TRANSITIONS=45} [2020-02-10 23:28:45,203 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 115 places, 45 transitions [2020-02-10 23:28:45,310 INFO L129 PetriNetUnfolder]: 0/435 cut-off events. [2020-02-10 23:28:45,310 INFO L130 PetriNetUnfolder]: For 2981/3114 co-relation queries the response was YES. [2020-02-10 23:28:45,315 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1768 conditions, 435 events. 0/435 cut-off events. For 2981/3114 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4375 event pairs. 5/399 useless extension candidates. Maximal degree in co-relation 1713. Up to 53 conditions per place. [2020-02-10 23:28:45,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 45 transitions [2020-02-10 23:28:45,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 45 transitions [2020-02-10 23:28:45,325 INFO L479 AbstractCegarLoop]: Abstraction has has 114 places, 45 transitions [2020-02-10 23:28:45,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:28:45,402 INFO L129 PetriNetUnfolder]: 0/385 cut-off events. [2020-02-10 23:28:45,402 INFO L130 PetriNetUnfolder]: For 2981/3114 co-relation queries the response was YES. [2020-02-10 23:28:45,403 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:45,403 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:45,403 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:45,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:45,403 INFO L82 PathProgramCache]: Analyzing trace with hash 869847050, now seen corresponding path program 7 times [2020-02-10 23:28:45,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:45,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792064184] [2020-02-10 23:28:45,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:45,638 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 23:28:45,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792064184] [2020-02-10 23:28:45,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:45,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:28:45,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376111574] [2020-02-10 23:28:45,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:28:45,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:45,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:28:45,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:28:45,641 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:28:45,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 45 transitions. Second operand 8 states. [2020-02-10 23:28:45,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:45,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:28:45,642 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:46,042 INFO L129 PetriNetUnfolder]: 178/799 cut-off events. [2020-02-10 23:28:46,042 INFO L130 PetriNetUnfolder]: For 7855/7905 co-relation queries the response was YES. [2020-02-10 23:28:46,052 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4077 conditions, 799 events. 178/799 cut-off events. For 7855/7905 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7163 event pairs. 1/768 useless extension candidates. Maximal degree in co-relation 4021. Up to 197 conditions per place. [2020-02-10 23:28:46,071 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 44 selfloop transitions, 16 changer transitions 2/74 dead transitions. [2020-02-10 23:28:46,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:28:46,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:28:46,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:28:46,073 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:28:46,074 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:28:46,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:28:46,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:46,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:28:46,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:28:46,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:28:46,077 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:28:46,077 INFO L178 Difference]: Start difference. First operand has 114 places, 45 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:28:46,078 INFO L206 Difference]: Finished difference. Result has 124 places, 47 transitions [2020-02-10 23:28:46,078 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=604, PETRI_PLACES=124, PETRI_TRANSITIONS=47} [2020-02-10 23:28:46,078 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 124 places, 47 transitions [2020-02-10 23:28:46,185 INFO L129 PetriNetUnfolder]: 0/436 cut-off events. [2020-02-10 23:28:46,185 INFO L130 PetriNetUnfolder]: For 3711/3874 co-relation queries the response was YES. [2020-02-10 23:28:46,191 INFO L76 FinitePrefix]: Finished finitePrefix Result has 1906 conditions, 436 events. 0/436 cut-off events. For 3711/3874 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4364 event pairs. 5/400 useless extension candidates. Maximal degree in co-relation 1847. Up to 53 conditions per place. [2020-02-10 23:28:46,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 47 transitions [2020-02-10 23:28:46,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 47 transitions [2020-02-10 23:28:46,203 INFO L479 AbstractCegarLoop]: Abstraction has has 123 places, 47 transitions [2020-02-10 23:28:46,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:28:46,304 INFO L129 PetriNetUnfolder]: 0/386 cut-off events. [2020-02-10 23:28:46,304 INFO L130 PetriNetUnfolder]: For 3711/3874 co-relation queries the response was YES. [2020-02-10 23:28:46,305 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:46,305 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:46,305 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:46,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:46,305 INFO L82 PathProgramCache]: Analyzing trace with hash 78094052, now seen corresponding path program 8 times [2020-02-10 23:28:46,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:46,306 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434784658] [2020-02-10 23:28:46,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:46,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:46,557 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434784658] [2020-02-10 23:28:46,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:46,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:28:46,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88656493] [2020-02-10 23:28:46,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:28:46,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:46,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:28:46,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:28:46,559 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:28:46,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 47 transitions. Second operand 8 states. [2020-02-10 23:28:46,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:46,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:28:46,560 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:46,966 INFO L129 PetriNetUnfolder]: 170/859 cut-off events. [2020-02-10 23:28:46,967 INFO L130 PetriNetUnfolder]: For 9798/9877 co-relation queries the response was YES. [2020-02-10 23:28:46,975 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4588 conditions, 859 events. 170/859 cut-off events. For 9798/9877 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8055 event pairs. 4/832 useless extension candidates. Maximal degree in co-relation 4528. Up to 197 conditions per place. [2020-02-10 23:28:46,995 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 46 selfloop transitions, 20 changer transitions 0/78 dead transitions. [2020-02-10 23:28:46,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:28:46,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:28:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:28:46,998 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:28:46,998 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:28:46,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:28:46,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:46,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:28:47,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:28:47,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:28:47,001 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:28:47,001 INFO L178 Difference]: Start difference. First operand has 123 places, 47 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:28:47,002 INFO L206 Difference]: Finished difference. Result has 134 places, 54 transitions [2020-02-10 23:28:47,003 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=790, PETRI_PLACES=134, PETRI_TRANSITIONS=54} [2020-02-10 23:28:47,003 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 134 places, 54 transitions [2020-02-10 23:28:47,153 INFO L129 PetriNetUnfolder]: 0/520 cut-off events. [2020-02-10 23:28:47,153 INFO L130 PetriNetUnfolder]: For 5684/5861 co-relation queries the response was YES. [2020-02-10 23:28:47,158 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 520 events. 0/520 cut-off events. For 5684/5861 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5494 event pairs. 5/484 useless extension candidates. Maximal degree in co-relation 2367. Up to 62 conditions per place. [2020-02-10 23:28:47,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 54 transitions [2020-02-10 23:28:47,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 54 transitions [2020-02-10 23:28:47,170 INFO L479 AbstractCegarLoop]: Abstraction has has 134 places, 54 transitions [2020-02-10 23:28:47,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:28:47,280 INFO L129 PetriNetUnfolder]: 0/462 cut-off events. [2020-02-10 23:28:47,281 INFO L130 PetriNetUnfolder]: For 5648/5797 co-relation queries the response was YES. [2020-02-10 23:28:47,281 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:47,281 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:47,281 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:47,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:47,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1641751494, now seen corresponding path program 9 times [2020-02-10 23:28:47,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:47,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968979441] [2020-02-10 23:28:47,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:47,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968979441] [2020-02-10 23:28:47,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:47,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:28:47,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192858967] [2020-02-10 23:28:47,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:28:47,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:47,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:28:47,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:28:47,523 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:28:47,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 54 transitions. Second operand 8 states. [2020-02-10 23:28:47,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:47,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:28:47,524 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:48,100 INFO L129 PetriNetUnfolder]: 184/1033 cut-off events. [2020-02-10 23:28:48,100 INFO L130 PetriNetUnfolder]: For 14999/15061 co-relation queries the response was YES. [2020-02-10 23:28:48,109 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5917 conditions, 1033 events. 184/1033 cut-off events. For 14999/15061 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10191 event pairs. 1/999 useless extension candidates. Maximal degree in co-relation 5852. Up to 299 conditions per place. [2020-02-10 23:28:48,124 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 61 selfloop transitions, 16 changer transitions 1/90 dead transitions. [2020-02-10 23:28:48,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:28:48,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:28:48,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:28:48,126 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:28:48,127 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:28:48,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:28:48,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:48,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:28:48,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:28:48,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:28:48,130 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:28:48,130 INFO L178 Difference]: Start difference. First operand has 134 places, 54 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:28:48,131 INFO L206 Difference]: Finished difference. Result has 147 places, 61 transitions [2020-02-10 23:28:48,131 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=994, PETRI_PLACES=147, PETRI_TRANSITIONS=61} [2020-02-10 23:28:48,132 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 147 places, 61 transitions [2020-02-10 23:28:48,273 INFO L129 PetriNetUnfolder]: 0/655 cut-off events. [2020-02-10 23:28:48,273 INFO L130 PetriNetUnfolder]: For 8742/8884 co-relation queries the response was YES. [2020-02-10 23:28:48,279 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3254 conditions, 655 events. 0/655 cut-off events. For 8742/8884 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7337 event pairs. 9/598 useless extension candidates. Maximal degree in co-relation 3183. Up to 78 conditions per place. [2020-02-10 23:28:48,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 61 transitions [2020-02-10 23:28:48,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 61 transitions [2020-02-10 23:28:48,289 INFO L479 AbstractCegarLoop]: Abstraction has has 146 places, 61 transitions [2020-02-10 23:28:48,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:28:48,385 INFO L129 PetriNetUnfolder]: 0/581 cut-off events. [2020-02-10 23:28:48,386 INFO L130 PetriNetUnfolder]: For 8658/8766 co-relation queries the response was YES. [2020-02-10 23:28:48,386 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:48,386 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:48,386 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:48,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:48,387 INFO L82 PathProgramCache]: Analyzing trace with hash -113713534, now seen corresponding path program 10 times [2020-02-10 23:28:48,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:48,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28432437] [2020-02-10 23:28:48,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:48,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:48,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28432437] [2020-02-10 23:28:48,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:48,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:28:48,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299216300] [2020-02-10 23:28:48,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:28:48,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:48,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:28:48,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:28:48,619 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:28:48,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 61 transitions. Second operand 8 states. [2020-02-10 23:28:48,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:48,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:28:48,620 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:49,205 INFO L129 PetriNetUnfolder]: 180/1082 cut-off events. [2020-02-10 23:28:49,205 INFO L130 PetriNetUnfolder]: For 18906/18968 co-relation queries the response was YES. [2020-02-10 23:28:49,216 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6482 conditions, 1082 events. 180/1082 cut-off events. For 18906/18968 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 10956 event pairs. 1/1051 useless extension candidates. Maximal degree in co-relation 6410. Up to 248 conditions per place. [2020-02-10 23:28:49,234 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 57 selfloop transitions, 23 changer transitions 2/94 dead transitions. [2020-02-10 23:28:49,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:28:49,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:28:49,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:28:49,236 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:28:49,236 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:28:49,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:28:49,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:49,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:28:49,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:28:49,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:28:49,239 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:28:49,239 INFO L178 Difference]: Start difference. First operand has 146 places, 61 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:28:49,240 INFO L206 Difference]: Finished difference. Result has 158 places, 67 transitions [2020-02-10 23:28:49,240 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1196, PETRI_PLACES=158, PETRI_TRANSITIONS=67} [2020-02-10 23:28:49,240 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 158 places, 67 transitions [2020-02-10 23:28:49,451 INFO L129 PetriNetUnfolder]: 0/693 cut-off events. [2020-02-10 23:28:49,451 INFO L130 PetriNetUnfolder]: For 11048/11157 co-relation queries the response was YES. [2020-02-10 23:28:49,457 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3662 conditions, 693 events. 0/693 cut-off events. For 11048/11157 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7867 event pairs. 12/641 useless extension candidates. Maximal degree in co-relation 3585. Up to 82 conditions per place. [2020-02-10 23:28:49,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 67 transitions [2020-02-10 23:28:49,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 67 transitions [2020-02-10 23:28:49,468 INFO L479 AbstractCegarLoop]: Abstraction has has 157 places, 67 transitions [2020-02-10 23:28:49,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:28:49,579 INFO L129 PetriNetUnfolder]: 0/615 cut-off events. [2020-02-10 23:28:49,579 INFO L130 PetriNetUnfolder]: For 11132/11275 co-relation queries the response was YES. [2020-02-10 23:28:49,579 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:49,580 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:49,580 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:49,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:49,580 INFO L82 PathProgramCache]: Analyzing trace with hash -426016186, now seen corresponding path program 11 times [2020-02-10 23:28:49,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:49,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882368699] [2020-02-10 23:28:49,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:49,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:49,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882368699] [2020-02-10 23:28:49,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:49,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:28:49,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58018281] [2020-02-10 23:28:49,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:28:49,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:49,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:28:49,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:28:49,820 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:28:49,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 67 transitions. Second operand 8 states. [2020-02-10 23:28:49,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:49,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:28:49,820 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:50,659 INFO L129 PetriNetUnfolder]: 192/1295 cut-off events. [2020-02-10 23:28:50,660 INFO L130 PetriNetUnfolder]: For 25518/25597 co-relation queries the response was YES. [2020-02-10 23:28:50,672 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8204 conditions, 1295 events. 192/1295 cut-off events. For 25518/25597 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14015 event pairs. 1/1259 useless extension candidates. Maximal degree in co-relation 8126. Up to 376 conditions per place. [2020-02-10 23:28:50,695 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 78 selfloop transitions, 14 changer transitions 1/105 dead transitions. [2020-02-10 23:28:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:28:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:28:50,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:28:50,697 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:28:50,697 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:28:50,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:28:50,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:50,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:28:50,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:28:50,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:28:50,700 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:28:50,700 INFO L178 Difference]: Start difference. First operand has 157 places, 67 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:28:50,702 INFO L206 Difference]: Finished difference. Result has 170 places, 74 transitions [2020-02-10 23:28:50,702 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1404, PETRI_PLACES=170, PETRI_TRANSITIONS=74} [2020-02-10 23:28:50,702 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 170 places, 74 transitions [2020-02-10 23:28:51,004 INFO L129 PetriNetUnfolder]: 0/904 cut-off events. [2020-02-10 23:28:51,005 INFO L130 PetriNetUnfolder]: For 17101/17173 co-relation queries the response was YES. [2020-02-10 23:28:51,017 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5063 conditions, 904 events. 0/904 cut-off events. For 17101/17173 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10961 event pairs. 5/825 useless extension candidates. Maximal degree in co-relation 4979. Up to 106 conditions per place. [2020-02-10 23:28:51,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 74 transitions [2020-02-10 23:28:51,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 74 transitions [2020-02-10 23:28:51,034 INFO L479 AbstractCegarLoop]: Abstraction has has 169 places, 74 transitions [2020-02-10 23:28:51,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:28:51,293 INFO L129 PetriNetUnfolder]: 0/802 cut-off events. [2020-02-10 23:28:51,293 INFO L130 PetriNetUnfolder]: For 17149/17217 co-relation queries the response was YES. [2020-02-10 23:28:51,293 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:51,293 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:51,293 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:51,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:51,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1926057022, now seen corresponding path program 12 times [2020-02-10 23:28:51,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:51,294 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068644669] [2020-02-10 23:28:51,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:51,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:51,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068644669] [2020-02-10 23:28:51,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:51,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:28:51,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427821893] [2020-02-10 23:28:51,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:28:51,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:51,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:28:51,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:28:51,540 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:28:51,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 74 transitions. Second operand 8 states. [2020-02-10 23:28:51,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:51,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:28:51,540 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:52,710 INFO L129 PetriNetUnfolder]: 176/1483 cut-off events. [2020-02-10 23:28:52,710 INFO L130 PetriNetUnfolder]: For 34098/34216 co-relation queries the response was YES. [2020-02-10 23:28:52,725 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9645 conditions, 1483 events. 176/1483 cut-off events. For 34098/34216 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 17174 event pairs. 1/1446 useless extension candidates. Maximal degree in co-relation 9560. Up to 299 conditions per place. [2020-02-10 23:28:52,749 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 73 selfloop transitions, 34 changer transitions 1/120 dead transitions. [2020-02-10 23:28:52,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:28:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:28:52,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:28:52,751 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:28:52,751 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:28:52,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:28:52,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:52,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:28:52,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:28:52,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:28:52,754 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:28:52,754 INFO L178 Difference]: Start difference. First operand has 169 places, 74 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:28:52,755 INFO L206 Difference]: Finished difference. Result has 181 places, 83 transitions [2020-02-10 23:28:52,756 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1724, PETRI_PLACES=181, PETRI_TRANSITIONS=83} [2020-02-10 23:28:52,756 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 181 places, 83 transitions [2020-02-10 23:28:53,163 INFO L129 PetriNetUnfolder]: 0/1123 cut-off events. [2020-02-10 23:28:53,163 INFO L130 PetriNetUnfolder]: For 25295/25372 co-relation queries the response was YES. [2020-02-10 23:28:53,175 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6651 conditions, 1123 events. 0/1123 cut-off events. For 25295/25372 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14299 event pairs. 12/1048 useless extension candidates. Maximal degree in co-relation 6561. Up to 130 conditions per place. [2020-02-10 23:28:53,176 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 83 transitions [2020-02-10 23:28:53,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 83 transitions [2020-02-10 23:28:53,196 INFO L479 AbstractCegarLoop]: Abstraction has has 180 places, 83 transitions [2020-02-10 23:28:53,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:28:53,487 INFO L129 PetriNetUnfolder]: 0/997 cut-off events. [2020-02-10 23:28:53,487 INFO L130 PetriNetUnfolder]: For 25295/25372 co-relation queries the response was YES. [2020-02-10 23:28:53,487 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:53,487 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:53,487 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:53,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:53,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1832232914, now seen corresponding path program 13 times [2020-02-10 23:28:53,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:53,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596023068] [2020-02-10 23:28:53,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:53,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:53,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596023068] [2020-02-10 23:28:53,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:53,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:28:53,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61677365] [2020-02-10 23:28:53,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:28:53,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:53,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:28:53,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:28:53,724 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:28:53,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 83 transitions. Second operand 8 states. [2020-02-10 23:28:53,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:53,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:28:53,725 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:55,151 INFO L129 PetriNetUnfolder]: 156/1707 cut-off events. [2020-02-10 23:28:55,151 INFO L130 PetriNetUnfolder]: For 44516/44621 co-relation queries the response was YES. [2020-02-10 23:28:55,168 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11399 conditions, 1707 events. 156/1707 cut-off events. For 44516/44621 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 21166 event pairs. 1/1667 useless extension candidates. Maximal degree in co-relation 11308. Up to 319 conditions per place. [2020-02-10 23:28:55,197 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 69 selfloop transitions, 39 changer transitions 0/120 dead transitions. [2020-02-10 23:28:55,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:28:55,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:28:55,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:28:55,199 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:28:55,199 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:28:55,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:28:55,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:55,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:28:55,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:28:55,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:28:55,202 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:28:55,202 INFO L178 Difference]: Start difference. First operand has 180 places, 83 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:28:55,203 INFO L206 Difference]: Finished difference. Result has 192 places, 96 transitions [2020-02-10 23:28:55,204 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2197, PETRI_PLACES=192, PETRI_TRANSITIONS=96} [2020-02-10 23:28:55,204 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 192 places, 96 transitions [2020-02-10 23:28:55,863 INFO L129 PetriNetUnfolder]: 0/1404 cut-off events. [2020-02-10 23:28:55,863 INFO L130 PetriNetUnfolder]: For 37275/37320 co-relation queries the response was YES. [2020-02-10 23:28:55,883 INFO L76 FinitePrefix]: Finished finitePrefix Result has 8796 conditions, 1404 events. 0/1404 cut-off events. For 37275/37320 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 18879 event pairs. 0/1308 useless extension candidates. Maximal degree in co-relation 8700. Up to 160 conditions per place. [2020-02-10 23:28:55,883 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 96 transitions [2020-02-10 23:28:55,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 96 transitions [2020-02-10 23:28:55,914 INFO L479 AbstractCegarLoop]: Abstraction has has 192 places, 96 transitions [2020-02-10 23:28:55,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:28:56,290 INFO L129 PetriNetUnfolder]: 0/1249 cut-off events. [2020-02-10 23:28:56,290 INFO L130 PetriNetUnfolder]: For 37348/37396 co-relation queries the response was YES. [2020-02-10 23:28:56,290 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:56,290 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:56,291 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:56,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:56,291 INFO L82 PathProgramCache]: Analyzing trace with hash 2051063500, now seen corresponding path program 14 times [2020-02-10 23:28:56,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:56,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732048586] [2020-02-10 23:28:56,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:56,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:56,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732048586] [2020-02-10 23:28:56,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:56,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:28:56,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733612736] [2020-02-10 23:28:56,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:28:56,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:56,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:28:56,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:28:56,541 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:28:56,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 96 transitions. Second operand 8 states. [2020-02-10 23:28:56,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:56,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:28:56,541 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:57,829 INFO L129 PetriNetUnfolder]: 156/1706 cut-off events. [2020-02-10 23:28:57,829 INFO L130 PetriNetUnfolder]: For 50150/50236 co-relation queries the response was YES. [2020-02-10 23:28:57,849 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11902 conditions, 1706 events. 156/1706 cut-off events. For 50150/50236 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 21158 event pairs. 1/1666 useless extension candidates. Maximal degree in co-relation 11805. Up to 459 conditions per place. [2020-02-10 23:28:57,881 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 81 selfloop transitions, 33 changer transitions 0/126 dead transitions. [2020-02-10 23:28:57,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:28:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:28:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:28:57,883 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:28:57,883 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:28:57,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:28:57,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:57,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:28:57,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:28:57,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:28:57,886 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:28:57,886 INFO L178 Difference]: Start difference. First operand has 192 places, 96 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:28:57,888 INFO L206 Difference]: Finished difference. Result has 203 places, 102 transitions [2020-02-10 23:28:57,888 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2449, PETRI_PLACES=203, PETRI_TRANSITIONS=102} [2020-02-10 23:28:57,888 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 203 places, 102 transitions [2020-02-10 23:28:58,565 INFO L129 PetriNetUnfolder]: 0/1403 cut-off events. [2020-02-10 23:28:58,565 INFO L130 PetriNetUnfolder]: For 42069/42121 co-relation queries the response was YES. [2020-02-10 23:28:58,583 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9185 conditions, 1403 events. 0/1403 cut-off events. For 42069/42121 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 18810 event pairs. 1/1310 useless extension candidates. Maximal degree in co-relation 9084. Up to 160 conditions per place. [2020-02-10 23:28:58,583 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 102 transitions [2020-02-10 23:28:58,610 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 102 transitions [2020-02-10 23:28:58,611 INFO L479 AbstractCegarLoop]: Abstraction has has 203 places, 102 transitions [2020-02-10 23:28:58,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:28:59,059 INFO L129 PetriNetUnfolder]: 0/1249 cut-off events. [2020-02-10 23:28:59,060 INFO L130 PetriNetUnfolder]: For 41760/41808 co-relation queries the response was YES. [2020-02-10 23:28:59,060 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:59,060 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:59,060 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:59,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:59,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1733719474, now seen corresponding path program 15 times [2020-02-10 23:28:59,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:59,061 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211256326] [2020-02-10 23:28:59,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:59,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211256326] [2020-02-10 23:28:59,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:59,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:28:59,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208315742] [2020-02-10 23:28:59,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:28:59,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:59,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:28:59,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:28:59,276 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:28:59,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 102 transitions. Second operand 8 states. [2020-02-10 23:28:59,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:59,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:28:59,276 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:00,973 INFO L129 PetriNetUnfolder]: 156/1704 cut-off events. [2020-02-10 23:29:00,974 INFO L130 PetriNetUnfolder]: For 56217/56303 co-relation queries the response was YES. [2020-02-10 23:29:00,994 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12356 conditions, 1704 events. 156/1704 cut-off events. For 56217/56303 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 21089 event pairs. 1/1665 useless extension candidates. Maximal degree in co-relation 12254. Up to 319 conditions per place. [2020-02-10 23:29:01,025 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 86 selfloop transitions, 33 changer transitions 1/132 dead transitions. [2020-02-10 23:29:01,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:29:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:29:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:29:01,027 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:29:01,027 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:29:01,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:29:01,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:01,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:29:01,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:29:01,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:29:01,028 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:29:01,028 INFO L178 Difference]: Start difference. First operand has 203 places, 102 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:29:01,030 INFO L206 Difference]: Finished difference. Result has 214 places, 106 transitions [2020-02-10 23:29:01,031 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2653, PETRI_PLACES=214, PETRI_TRANSITIONS=106} [2020-02-10 23:29:01,031 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 214 places, 106 transitions [2020-02-10 23:29:01,785 INFO L129 PetriNetUnfolder]: 0/1397 cut-off events. [2020-02-10 23:29:01,785 INFO L130 PetriNetUnfolder]: For 46151/46199 co-relation queries the response was YES. [2020-02-10 23:29:01,803 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9484 conditions, 1397 events. 0/1397 cut-off events. For 46151/46199 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 18768 event pairs. 0/1296 useless extension candidates. Maximal degree in co-relation 9378. Up to 159 conditions per place. [2020-02-10 23:29:01,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 106 transitions [2020-02-10 23:29:01,832 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 106 transitions [2020-02-10 23:29:01,833 INFO L479 AbstractCegarLoop]: Abstraction has has 213 places, 106 transitions [2020-02-10 23:29:01,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:29:02,196 INFO L129 PetriNetUnfolder]: 0/1244 cut-off events. [2020-02-10 23:29:02,196 INFO L130 PetriNetUnfolder]: For 46342/46401 co-relation queries the response was YES. [2020-02-10 23:29:02,196 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:02,196 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:02,196 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:02,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:02,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1937284794, now seen corresponding path program 16 times [2020-02-10 23:29:02,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:02,197 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91846165] [2020-02-10 23:29:02,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:02,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:02,497 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91846165] [2020-02-10 23:29:02,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:02,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:29:02,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062065884] [2020-02-10 23:29:02,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:29:02,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:02,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:29:02,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:29:02,499 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:29:02,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 106 transitions. Second operand 8 states. [2020-02-10 23:29:02,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:02,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:29:02,500 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:04,338 INFO L129 PetriNetUnfolder]: 153/1730 cut-off events. [2020-02-10 23:29:04,339 INFO L130 PetriNetUnfolder]: For 62335/62421 co-relation queries the response was YES. [2020-02-10 23:29:04,362 INFO L76 FinitePrefix]: Finished finitePrefix Result has 12893 conditions, 1730 events. 153/1730 cut-off events. For 62335/62421 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 21596 event pairs. 1/1690 useless extension candidates. Maximal degree in co-relation 12786. Up to 452 conditions per place. [2020-02-10 23:29:04,400 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 112 selfloop transitions, 21 changer transitions 1/146 dead transitions. [2020-02-10 23:29:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:29:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:29:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:29:04,402 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:29:04,402 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:29:04,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:29:04,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:04,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:29:04,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:29:04,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:29:04,404 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:29:04,405 INFO L178 Difference]: Start difference. First operand has 213 places, 106 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:29:04,408 INFO L206 Difference]: Finished difference. Result has 224 places, 108 transitions [2020-02-10 23:29:04,410 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=2653, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2766, PETRI_PLACES=224, PETRI_TRANSITIONS=108} [2020-02-10 23:29:04,410 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 224 places, 108 transitions [2020-02-10 23:29:05,142 INFO L129 PetriNetUnfolder]: 0/1421 cut-off events. [2020-02-10 23:29:05,143 INFO L130 PetriNetUnfolder]: For 51652/51700 co-relation queries the response was YES. [2020-02-10 23:29:05,159 INFO L76 FinitePrefix]: Finished finitePrefix Result has 9985 conditions, 1421 events. 0/1421 cut-off events. For 51652/51700 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 19245 event pairs. 0/1321 useless extension candidates. Maximal degree in co-relation 9874. Up to 162 conditions per place. [2020-02-10 23:29:05,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 108 transitions [2020-02-10 23:29:05,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 108 transitions [2020-02-10 23:29:05,185 INFO L479 AbstractCegarLoop]: Abstraction has has 223 places, 108 transitions [2020-02-10 23:29:05,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:29:05,566 INFO L129 PetriNetUnfolder]: 0/1265 cut-off events. [2020-02-10 23:29:05,566 INFO L130 PetriNetUnfolder]: For 51652/51700 co-relation queries the response was YES. [2020-02-10 23:29:05,566 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:05,566 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:05,567 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:05,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:05,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1688035910, now seen corresponding path program 17 times [2020-02-10 23:29:05,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:05,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096747609] [2020-02-10 23:29:05,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:05,809 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096747609] [2020-02-10 23:29:05,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:05,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:29:05,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786996238] [2020-02-10 23:29:05,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:29:05,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:05,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:29:05,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:29:05,811 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:29:05,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 108 transitions. Second operand 8 states. [2020-02-10 23:29:05,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:05,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:29:05,812 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:07,664 INFO L129 PetriNetUnfolder]: 171/1864 cut-off events. [2020-02-10 23:29:07,664 INFO L130 PetriNetUnfolder]: For 73549/73647 co-relation queries the response was YES. [2020-02-10 23:29:07,688 INFO L76 FinitePrefix]: Finished finitePrefix Result has 14375 conditions, 1864 events. 171/1864 cut-off events. For 73549/73647 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 23591 event pairs. 1/1826 useless extension candidates. Maximal degree in co-relation 14263. Up to 415 conditions per place. [2020-02-10 23:29:07,726 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 98 selfloop transitions, 48 changer transitions 1/159 dead transitions. [2020-02-10 23:29:07,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:29:07,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:29:07,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:29:07,727 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:29:07,727 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:29:07,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:29:07,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:07,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:29:07,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:29:07,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:29:07,729 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:29:07,729 INFO L178 Difference]: Start difference. First operand has 223 places, 108 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:29:07,731 INFO L206 Difference]: Finished difference. Result has 236 places, 124 transitions [2020-02-10 23:29:07,731 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=2766, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3435, PETRI_PLACES=236, PETRI_TRANSITIONS=124} [2020-02-10 23:29:07,732 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 236 places, 124 transitions [2020-02-10 23:29:08,786 INFO L129 PetriNetUnfolder]: 0/1513 cut-off events. [2020-02-10 23:29:08,786 INFO L130 PetriNetUnfolder]: For 62614/62676 co-relation queries the response was YES. [2020-02-10 23:29:08,809 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11199 conditions, 1513 events. 0/1513 cut-off events. For 62614/62676 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 20701 event pairs. 1/1413 useless extension candidates. Maximal degree in co-relation 11081. Up to 173 conditions per place. [2020-02-10 23:29:08,809 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 124 transitions [2020-02-10 23:29:08,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 124 transitions [2020-02-10 23:29:08,844 INFO L479 AbstractCegarLoop]: Abstraction has has 235 places, 124 transitions [2020-02-10 23:29:08,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:29:09,333 INFO L129 PetriNetUnfolder]: 0/1346 cut-off events. [2020-02-10 23:29:09,334 INFO L130 PetriNetUnfolder]: For 62848/62913 co-relation queries the response was YES. [2020-02-10 23:29:09,334 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:09,334 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:09,334 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:09,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:09,334 INFO L82 PathProgramCache]: Analyzing trace with hash 869934560, now seen corresponding path program 18 times [2020-02-10 23:29:09,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:09,335 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320876818] [2020-02-10 23:29:09,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:09,607 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 23:29:09,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320876818] [2020-02-10 23:29:09,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:09,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:29:09,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502352787] [2020-02-10 23:29:09,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:29:09,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:09,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:29:09,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:29:09,609 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:29:09,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 124 transitions. Second operand 8 states. [2020-02-10 23:29:09,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:09,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:29:09,610 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:12,320 INFO L129 PetriNetUnfolder]: 156/2056 cut-off events. [2020-02-10 23:29:12,320 INFO L130 PetriNetUnfolder]: For 90430/90633 co-relation queries the response was YES. [2020-02-10 23:29:12,346 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16300 conditions, 2056 events. 156/2056 cut-off events. For 90430/90633 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 27005 event pairs. 1/2012 useless extension candidates. Maximal degree in co-relation 16181. Up to 411 conditions per place. [2020-02-10 23:29:12,388 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 113 selfloop transitions, 50 changer transitions 0/175 dead transitions. [2020-02-10 23:29:12,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:29:12,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:29:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:29:12,390 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:29:12,390 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:29:12,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:29:12,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:12,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:29:12,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:29:12,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:29:12,392 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:29:12,392 INFO L178 Difference]: Start difference. First operand has 235 places, 124 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:29:12,394 INFO L206 Difference]: Finished difference. Result has 248 places, 142 transitions [2020-02-10 23:29:12,395 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=3435, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4177, PETRI_PLACES=248, PETRI_TRANSITIONS=142} [2020-02-10 23:29:12,395 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 248 places, 142 transitions [2020-02-10 23:29:13,945 INFO L129 PetriNetUnfolder]: 0/1735 cut-off events. [2020-02-10 23:29:13,945 INFO L130 PetriNetUnfolder]: For 79733/79826 co-relation queries the response was YES. [2020-02-10 23:29:13,972 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13347 conditions, 1735 events. 0/1735 cut-off events. For 79733/79826 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24387 event pairs. 3/1627 useless extension candidates. Maximal degree in co-relation 13222. Up to 197 conditions per place. [2020-02-10 23:29:13,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 142 transitions [2020-02-10 23:29:14,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 142 transitions [2020-02-10 23:29:14,015 INFO L479 AbstractCegarLoop]: Abstraction has has 248 places, 142 transitions [2020-02-10 23:29:14,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:29:14,609 INFO L129 PetriNetUnfolder]: 0/1545 cut-off events. [2020-02-10 23:29:14,609 INFO L130 PetriNetUnfolder]: For 79733/79826 co-relation queries the response was YES. [2020-02-10 23:29:14,610 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:14,610 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:14,610 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:14,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:14,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1902347194, now seen corresponding path program 19 times [2020-02-10 23:29:14,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:14,610 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676767345] [2020-02-10 23:29:14,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:14,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676767345] [2020-02-10 23:29:14,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:14,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:29:14,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916480188] [2020-02-10 23:29:14,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:29:14,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:14,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:29:14,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:29:14,878 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:29:14,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 142 transitions. Second operand 8 states. [2020-02-10 23:29:14,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:14,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:29:14,879 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:17,712 INFO L129 PetriNetUnfolder]: 156/2050 cut-off events. [2020-02-10 23:29:17,713 INFO L130 PetriNetUnfolder]: For 102102/102492 co-relation queries the response was YES. [2020-02-10 23:29:17,746 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17141 conditions, 2050 events. 156/2050 cut-off events. For 102102/102492 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 26897 event pairs. 6/2009 useless extension candidates. Maximal degree in co-relation 17015. Up to 411 conditions per place. [2020-02-10 23:29:17,810 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 123 selfloop transitions, 37 changer transitions 1/173 dead transitions. [2020-02-10 23:29:17,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:29:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:29:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:29:17,812 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:29:17,812 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:29:17,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:29:17,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:17,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:29:17,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:29:17,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:29:17,814 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:29:17,814 INFO L178 Difference]: Start difference. First operand has 248 places, 142 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:29:17,816 INFO L206 Difference]: Finished difference. Result has 259 places, 147 transitions [2020-02-10 23:29:17,816 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=4177, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4461, PETRI_PLACES=259, PETRI_TRANSITIONS=147} [2020-02-10 23:29:17,816 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 259 places, 147 transitions [2020-02-10 23:29:19,324 INFO L129 PetriNetUnfolder]: 0/1727 cut-off events. [2020-02-10 23:29:19,324 INFO L130 PetriNetUnfolder]: For 87247/87344 co-relation queries the response was YES. [2020-02-10 23:29:19,352 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13726 conditions, 1727 events. 0/1727 cut-off events. For 87247/87344 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 24280 event pairs. 3/1621 useless extension candidates. Maximal degree in co-relation 13596. Up to 196 conditions per place. [2020-02-10 23:29:19,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 147 transitions [2020-02-10 23:29:19,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 147 transitions [2020-02-10 23:29:19,394 INFO L479 AbstractCegarLoop]: Abstraction has has 258 places, 147 transitions [2020-02-10 23:29:19,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:29:19,998 INFO L129 PetriNetUnfolder]: 0/1538 cut-off events. [2020-02-10 23:29:19,998 INFO L130 PetriNetUnfolder]: For 87121/87198 co-relation queries the response was YES. [2020-02-10 23:29:19,998 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:19,998 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:19,998 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:19,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:19,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1170851420, now seen corresponding path program 20 times [2020-02-10 23:29:19,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:19,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562385763] [2020-02-10 23:29:19,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:20,229 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 23:29:20,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562385763] [2020-02-10 23:29:20,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:20,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:29:20,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712492385] [2020-02-10 23:29:20,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:29:20,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:20,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:29:20,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:29:20,231 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:29:20,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 147 transitions. Second operand 8 states. [2020-02-10 23:29:20,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:20,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:29:20,232 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:23,614 INFO L129 PetriNetUnfolder]: 138/2310 cut-off events. [2020-02-10 23:29:23,615 INFO L130 PetriNetUnfolder]: For 121898/122115 co-relation queries the response was YES. [2020-02-10 23:29:23,654 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19224 conditions, 2310 events. 138/2310 cut-off events. For 121898/122115 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 31826 event pairs. 4/2270 useless extension candidates. Maximal degree in co-relation 19093. Up to 386 conditions per place. [2020-02-10 23:29:23,714 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 109 selfloop transitions, 85 changer transitions 0/206 dead transitions. [2020-02-10 23:29:23,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:29:23,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:29:23,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:29:23,716 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:29:23,716 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:29:23,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:29:23,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:23,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:29:23,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:29:23,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:29:23,718 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:29:23,718 INFO L178 Difference]: Start difference. First operand has 258 places, 147 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:29:23,721 INFO L206 Difference]: Finished difference. Result has 270 places, 168 transitions [2020-02-10 23:29:23,721 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=4461, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5572, PETRI_PLACES=270, PETRI_TRANSITIONS=168} [2020-02-10 23:29:23,721 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 270 places, 168 transitions [2020-02-10 23:29:25,409 INFO L129 PetriNetUnfolder]: 0/1965 cut-off events. [2020-02-10 23:29:25,409 INFO L130 PetriNetUnfolder]: For 109924/110164 co-relation queries the response was YES. [2020-02-10 23:29:25,440 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16104 conditions, 1965 events. 0/1965 cut-off events. For 109924/110164 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 28309 event pairs. 22/1871 useless extension candidates. Maximal degree in co-relation 15968. Up to 223 conditions per place. [2020-02-10 23:29:25,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 168 transitions [2020-02-10 23:29:25,485 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 168 transitions [2020-02-10 23:29:25,485 INFO L479 AbstractCegarLoop]: Abstraction has has 270 places, 168 transitions [2020-02-10 23:29:25,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:29:26,247 INFO L129 PetriNetUnfolder]: 0/1750 cut-off events. [2020-02-10 23:29:26,247 INFO L130 PetriNetUnfolder]: For 109782/110016 co-relation queries the response was YES. [2020-02-10 23:29:26,247 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:26,248 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:26,248 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:26,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:26,248 INFO L82 PathProgramCache]: Analyzing trace with hash 2087130494, now seen corresponding path program 21 times [2020-02-10 23:29:26,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:26,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431335310] [2020-02-10 23:29:26,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:26,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431335310] [2020-02-10 23:29:26,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:26,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:29:26,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19166686] [2020-02-10 23:29:26,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:29:26,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:26,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:29:26,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:29:26,492 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:29:26,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 168 transitions. Second operand 8 states. [2020-02-10 23:29:26,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:26,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:29:26,493 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:29,999 INFO L129 PetriNetUnfolder]: 138/2270 cut-off events. [2020-02-10 23:29:29,999 INFO L130 PetriNetUnfolder]: For 132970/133083 co-relation queries the response was YES. [2020-02-10 23:29:30,039 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19940 conditions, 2270 events. 138/2270 cut-off events. For 132970/133083 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 31029 event pairs. 1/2232 useless extension candidates. Maximal degree in co-relation 19803. Up to 511 conditions per place. [2020-02-10 23:29:30,104 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 157 selfloop transitions, 61 changer transitions 3/233 dead transitions. [2020-02-10 23:29:30,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:29:30,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:29:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:29:30,105 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:29:30,105 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:29:30,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:29:30,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:30,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:29:30,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:29:30,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:29:30,107 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:29:30,107 INFO L178 Difference]: Start difference. First operand has 270 places, 168 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:29:30,110 INFO L206 Difference]: Finished difference. Result has 283 places, 180 transitions [2020-02-10 23:29:30,110 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=5572, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6277, PETRI_PLACES=283, PETRI_TRANSITIONS=180} [2020-02-10 23:29:30,111 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 283 places, 180 transitions [2020-02-10 23:29:31,861 INFO L129 PetriNetUnfolder]: 0/1957 cut-off events. [2020-02-10 23:29:31,861 INFO L130 PetriNetUnfolder]: For 121621/121865 co-relation queries the response was YES. [2020-02-10 23:29:31,891 INFO L76 FinitePrefix]: Finished finitePrefix Result has 16664 conditions, 1957 events. 0/1957 cut-off events. For 121621/121865 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 28195 event pairs. 22/1869 useless extension candidates. Maximal degree in co-relation 16521. Up to 222 conditions per place. [2020-02-10 23:29:31,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 180 transitions [2020-02-10 23:29:31,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 180 transitions [2020-02-10 23:29:31,936 INFO L479 AbstractCegarLoop]: Abstraction has has 282 places, 180 transitions [2020-02-10 23:29:31,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:29:32,750 INFO L129 PetriNetUnfolder]: 0/1743 cut-off events. [2020-02-10 23:29:32,750 INFO L130 PetriNetUnfolder]: For 121236/121463 co-relation queries the response was YES. [2020-02-10 23:29:32,750 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:32,750 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:32,750 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:32,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:32,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1213394152, now seen corresponding path program 22 times [2020-02-10 23:29:32,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:32,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968552913] [2020-02-10 23:29:32,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:32,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968552913] [2020-02-10 23:29:32,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:32,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:29:32,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408427597] [2020-02-10 23:29:32,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:29:32,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:32,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:29:32,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:29:32,979 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:29:32,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 180 transitions. Second operand 8 states. [2020-02-10 23:29:32,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:32,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:29:32,980 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:36,717 INFO L129 PetriNetUnfolder]: 138/2264 cut-off events. [2020-02-10 23:29:36,717 INFO L130 PetriNetUnfolder]: For 146244/146466 co-relation queries the response was YES. [2020-02-10 23:29:36,757 INFO L76 FinitePrefix]: Finished finitePrefix Result has 20594 conditions, 2264 events. 138/2264 cut-off events. For 146244/146466 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 30937 event pairs. 1/2229 useless extension candidates. Maximal degree in co-relation 20450. Up to 459 conditions per place. [2020-02-10 23:29:36,819 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 144 selfloop transitions, 68 changer transitions 2/226 dead transitions. [2020-02-10 23:29:36,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:29:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:29:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:29:36,820 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:29:36,820 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:29:36,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:29:36,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:36,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:29:36,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:29:36,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:29:36,822 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:29:36,823 INFO L178 Difference]: Start difference. First operand has 282 places, 180 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:29:36,825 INFO L206 Difference]: Finished difference. Result has 291 places, 182 transitions [2020-02-10 23:29:36,826 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=6277, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6467, PETRI_PLACES=291, PETRI_TRANSITIONS=182} [2020-02-10 23:29:36,826 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 291 places, 182 transitions [2020-02-10 23:29:39,171 INFO L129 PetriNetUnfolder]: 0/1948 cut-off events. [2020-02-10 23:29:39,172 INFO L130 PetriNetUnfolder]: For 128902/129133 co-relation queries the response was YES. [2020-02-10 23:29:39,201 INFO L76 FinitePrefix]: Finished finitePrefix Result has 17054 conditions, 1948 events. 0/1948 cut-off events. For 128902/129133 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 28050 event pairs. 7/1844 useless extension candidates. Maximal degree in co-relation 16908. Up to 221 conditions per place. [2020-02-10 23:29:39,201 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 182 transitions [2020-02-10 23:29:39,245 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 182 transitions [2020-02-10 23:29:39,246 INFO L479 AbstractCegarLoop]: Abstraction has has 290 places, 182 transitions [2020-02-10 23:29:39,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:29:40,058 INFO L129 PetriNetUnfolder]: 0/1735 cut-off events. [2020-02-10 23:29:40,059 INFO L130 PetriNetUnfolder]: For 129410/129643 co-relation queries the response was YES. [2020-02-10 23:29:40,059 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:40,059 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:40,059 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:40,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:40,059 INFO L82 PathProgramCache]: Analyzing trace with hash -908330078, now seen corresponding path program 23 times [2020-02-10 23:29:40,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:40,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532729246] [2020-02-10 23:29:40,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:40,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532729246] [2020-02-10 23:29:40,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:40,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:29:40,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082880481] [2020-02-10 23:29:40,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:29:40,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:40,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:29:40,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:29:40,320 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:29:40,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 182 transitions. Second operand 8 states. [2020-02-10 23:29:40,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:40,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:29:40,320 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:43,955 INFO L129 PetriNetUnfolder]: 124/2358 cut-off events. [2020-02-10 23:29:43,955 INFO L130 PetriNetUnfolder]: For 160789/161011 co-relation queries the response was YES. [2020-02-10 23:29:43,994 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21740 conditions, 2358 events. 124/2358 cut-off events. For 160789/161011 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 32808 event pairs. 1/2320 useless extension candidates. Maximal degree in co-relation 21593. Up to 386 conditions per place. [2020-02-10 23:29:44,052 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 119 selfloop transitions, 99 changer transitions 0/230 dead transitions. [2020-02-10 23:29:44,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:29:44,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:29:44,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:29:44,053 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:29:44,053 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:29:44,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:29:44,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:44,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:29:44,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:29:44,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:29:44,058 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:29:44,058 INFO L178 Difference]: Start difference. First operand has 290 places, 182 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:29:44,061 INFO L206 Difference]: Finished difference. Result has 301 places, 193 transitions [2020-02-10 23:29:44,061 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=6467, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7190, PETRI_PLACES=301, PETRI_TRANSITIONS=193} [2020-02-10 23:29:44,062 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 301 places, 193 transitions [2020-02-10 23:29:46,727 INFO L129 PetriNetUnfolder]: 0/2088 cut-off events. [2020-02-10 23:29:46,727 INFO L130 PetriNetUnfolder]: For 147162/147370 co-relation queries the response was YES. [2020-02-10 23:29:46,766 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18712 conditions, 2088 events. 0/2088 cut-off events. For 147162/147370 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 30392 event pairs. 4/1982 useless extension candidates. Maximal degree in co-relation 18561. Up to 236 conditions per place. [2020-02-10 23:29:46,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 301 places, 193 transitions [2020-02-10 23:29:46,827 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 301 places, 193 transitions [2020-02-10 23:29:46,827 INFO L479 AbstractCegarLoop]: Abstraction has has 301 places, 193 transitions [2020-02-10 23:29:46,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:29:47,767 INFO L129 PetriNetUnfolder]: 0/1861 cut-off events. [2020-02-10 23:29:47,768 INFO L130 PetriNetUnfolder]: For 147019/147149 co-relation queries the response was YES. [2020-02-10 23:29:47,768 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:47,768 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:47,768 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:47,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:47,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1778279122, now seen corresponding path program 24 times [2020-02-10 23:29:47,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:47,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706831705] [2020-02-10 23:29:47,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:47,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:47,993 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706831705] [2020-02-10 23:29:47,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:47,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:29:47,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943888114] [2020-02-10 23:29:47,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:29:47,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:47,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:29:47,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:29:47,995 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:29:47,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 193 transitions. Second operand 8 states. [2020-02-10 23:29:47,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:47,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:29:47,995 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:52,401 INFO L129 PetriNetUnfolder]: 110/2529 cut-off events. [2020-02-10 23:29:52,401 INFO L130 PetriNetUnfolder]: For 185844/186066 co-relation queries the response was YES. [2020-02-10 23:29:52,446 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23939 conditions, 2529 events. 110/2529 cut-off events. For 185844/186066 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 35888 event pairs. 1/2489 useless extension candidates. Maximal degree in co-relation 23787. Up to 511 conditions per place. [2020-02-10 23:29:52,513 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 181 selfloop transitions, 70 changer transitions 0/263 dead transitions. [2020-02-10 23:29:52,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:29:52,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:29:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:29:52,515 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:29:52,515 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:29:52,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:29:52,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:52,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:29:52,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:29:52,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:29:52,517 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:29:52,517 INFO L178 Difference]: Start difference. First operand has 301 places, 193 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:29:52,520 INFO L206 Difference]: Finished difference. Result has 314 places, 212 transitions [2020-02-10 23:29:52,520 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=7190, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8215, PETRI_PLACES=314, PETRI_TRANSITIONS=212} [2020-02-10 23:29:52,520 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 314 places, 212 transitions [2020-02-10 23:29:55,805 INFO L129 PetriNetUnfolder]: 0/2299 cut-off events. [2020-02-10 23:29:55,805 INFO L130 PetriNetUnfolder]: For 176186/176269 co-relation queries the response was YES. [2020-02-10 23:29:55,851 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21302 conditions, 2299 events. 0/2299 cut-off events. For 176186/176269 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 34032 event pairs. 2/2183 useless extension candidates. Maximal degree in co-relation 21144. Up to 259 conditions per place. [2020-02-10 23:29:55,851 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 212 transitions [2020-02-10 23:29:55,920 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 212 transitions [2020-02-10 23:29:55,920 INFO L479 AbstractCegarLoop]: Abstraction has has 314 places, 212 transitions [2020-02-10 23:29:55,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:29:57,002 INFO L129 PetriNetUnfolder]: 0/2050 cut-off events. [2020-02-10 23:29:57,003 INFO L130 PetriNetUnfolder]: For 175388/175453 co-relation queries the response was YES. [2020-02-10 23:29:57,003 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:57,003 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:57,003 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:57,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:57,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1035662118, now seen corresponding path program 25 times [2020-02-10 23:29:57,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:57,004 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124304321] [2020-02-10 23:29:57,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:57,259 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124304321] [2020-02-10 23:29:57,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:57,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:29:57,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90733480] [2020-02-10 23:29:57,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:29:57,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:57,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:29:57,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:29:57,261 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:29:57,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 212 transitions. Second operand 8 states. [2020-02-10 23:29:57,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:57,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:29:57,261 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:01,674 INFO L129 PetriNetUnfolder]: 110/2531 cut-off events. [2020-02-10 23:30:01,674 INFO L130 PetriNetUnfolder]: For 201450/201648 co-relation queries the response was YES. [2020-02-10 23:30:01,721 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24731 conditions, 2531 events. 110/2531 cut-off events. For 201450/201648 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 35949 event pairs. 1/2488 useless extension candidates. Maximal degree in co-relation 24572. Up to 596 conditions per place. [2020-02-10 23:30:01,787 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 162 selfloop transitions, 71 changer transitions 1/246 dead transitions. [2020-02-10 23:30:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:30:01,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:30:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:30:01,789 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:30:01,789 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:30:01,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:30:01,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:01,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:30:01,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:30:01,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:30:01,791 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:30:01,791 INFO L178 Difference]: Start difference. First operand has 314 places, 212 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:30:01,795 INFO L206 Difference]: Finished difference. Result has 324 places, 221 transitions [2020-02-10 23:30:01,795 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=8215, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8729, PETRI_PLACES=324, PETRI_TRANSITIONS=221} [2020-02-10 23:30:01,796 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 324 places, 221 transitions [2020-02-10 23:30:04,889 INFO L129 PetriNetUnfolder]: 0/2296 cut-off events. [2020-02-10 23:30:04,889 INFO L130 PetriNetUnfolder]: For 186762/186827 co-relation queries the response was YES. [2020-02-10 23:30:04,928 INFO L76 FinitePrefix]: Finished finitePrefix Result has 21789 conditions, 2296 events. 0/2296 cut-off events. For 186762/186827 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 33972 event pairs. 0/2178 useless extension candidates. Maximal degree in co-relation 21627. Up to 259 conditions per place. [2020-02-10 23:30:04,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 221 transitions [2020-02-10 23:30:04,986 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 323 places, 221 transitions [2020-02-10 23:30:04,986 INFO L479 AbstractCegarLoop]: Abstraction has has 323 places, 221 transitions [2020-02-10 23:30:04,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:30:06,156 INFO L129 PetriNetUnfolder]: 0/2048 cut-off events. [2020-02-10 23:30:06,156 INFO L130 PetriNetUnfolder]: For 186762/186827 co-relation queries the response was YES. [2020-02-10 23:30:06,156 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:06,156 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:06,156 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:06,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:06,156 INFO L82 PathProgramCache]: Analyzing trace with hash 614219612, now seen corresponding path program 26 times [2020-02-10 23:30:06,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:06,157 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152076970] [2020-02-10 23:30:06,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:06,403 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 23:30:06,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152076970] [2020-02-10 23:30:06,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:06,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:30:06,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504131292] [2020-02-10 23:30:06,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:30:06,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:06,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:30:06,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:30:06,406 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:30:06,406 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 221 transitions. Second operand 8 states. [2020-02-10 23:30:06,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:06,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:30:06,406 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:11,614 INFO L129 PetriNetUnfolder]: 110/2526 cut-off events. [2020-02-10 23:30:11,614 INFO L130 PetriNetUnfolder]: For 214021/214373 co-relation queries the response was YES. [2020-02-10 23:30:11,665 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25258 conditions, 2526 events. 110/2526 cut-off events. For 214021/214373 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 35833 event pairs. 2/2481 useless extension candidates. Maximal degree in co-relation 25095. Up to 612 conditions per place. [2020-02-10 23:30:11,743 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 168 selfloop transitions, 66 changer transitions 1/247 dead transitions. [2020-02-10 23:30:11,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:30:11,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:30:11,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:30:11,744 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:30:11,744 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:30:11,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:30:11,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:11,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:30:11,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:30:11,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:30:11,747 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:30:11,747 INFO L178 Difference]: Start difference. First operand has 323 places, 221 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:30:11,750 INFO L206 Difference]: Finished difference. Result has 332 places, 221 transitions [2020-02-10 23:30:11,750 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=8729, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8848, PETRI_PLACES=332, PETRI_TRANSITIONS=221} [2020-02-10 23:30:11,750 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 332 places, 221 transitions [2020-02-10 23:30:14,784 INFO L129 PetriNetUnfolder]: 0/2290 cut-off events. [2020-02-10 23:30:14,784 INFO L130 PetriNetUnfolder]: For 196295/196360 co-relation queries the response was YES. [2020-02-10 23:30:14,828 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22204 conditions, 2290 events. 0/2290 cut-off events. For 196295/196360 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 33909 event pairs. 0/2172 useless extension candidates. Maximal degree in co-relation 22039. Up to 258 conditions per place. [2020-02-10 23:30:14,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 221 transitions [2020-02-10 23:30:14,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 221 transitions [2020-02-10 23:30:14,894 INFO L479 AbstractCegarLoop]: Abstraction has has 331 places, 221 transitions [2020-02-10 23:30:14,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:30:16,078 INFO L129 PetriNetUnfolder]: 0/2043 cut-off events. [2020-02-10 23:30:16,078 INFO L130 PetriNetUnfolder]: For 196295/196360 co-relation queries the response was YES. [2020-02-10 23:30:16,078 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:16,078 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:16,079 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:16,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:16,079 INFO L82 PathProgramCache]: Analyzing trace with hash -231795060, now seen corresponding path program 27 times [2020-02-10 23:30:16,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:16,079 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89459718] [2020-02-10 23:30:16,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:16,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:16,311 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89459718] [2020-02-10 23:30:16,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:16,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:30:16,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633429061] [2020-02-10 23:30:16,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:30:16,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:16,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:30:16,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:30:16,312 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:30:16,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 221 transitions. Second operand 8 states. [2020-02-10 23:30:16,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:16,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:30:16,313 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:21,525 INFO L129 PetriNetUnfolder]: 110/2522 cut-off events. [2020-02-10 23:30:21,526 INFO L130 PetriNetUnfolder]: For 225037/225389 co-relation queries the response was YES. [2020-02-10 23:30:21,570 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25724 conditions, 2522 events. 110/2522 cut-off events. For 225037/225389 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 35765 event pairs. 6/2483 useless extension candidates. Maximal degree in co-relation 25558. Up to 494 conditions per place. [2020-02-10 23:30:21,636 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 135 selfloop transitions, 87 changer transitions 1/235 dead transitions. [2020-02-10 23:30:21,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:30:21,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:30:21,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:30:21,637 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:30:21,637 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:30:21,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:30:21,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:21,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:30:21,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:30:21,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:30:21,639 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:30:21,639 INFO L178 Difference]: Start difference. First operand has 331 places, 221 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:30:21,643 INFO L206 Difference]: Finished difference. Result has 340 places, 223 transitions [2020-02-10 23:30:21,644 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=8848, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9098, PETRI_PLACES=340, PETRI_TRANSITIONS=223} [2020-02-10 23:30:21,644 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 340 places, 223 transitions [2020-02-10 23:30:25,227 INFO L129 PetriNetUnfolder]: 0/2287 cut-off events. [2020-02-10 23:30:25,227 INFO L130 PetriNetUnfolder]: For 207254/207319 co-relation queries the response was YES. [2020-02-10 23:30:25,275 INFO L76 FinitePrefix]: Finished finitePrefix Result has 22691 conditions, 2287 events. 0/2287 cut-off events. For 207254/207319 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 33783 event pairs. 0/2169 useless extension candidates. Maximal degree in co-relation 22523. Up to 258 conditions per place. [2020-02-10 23:30:25,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 223 transitions [2020-02-10 23:30:25,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 223 transitions [2020-02-10 23:30:25,347 INFO L479 AbstractCegarLoop]: Abstraction has has 339 places, 223 transitions [2020-02-10 23:30:25,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:30:26,515 INFO L129 PetriNetUnfolder]: 0/2041 cut-off events. [2020-02-10 23:30:26,515 INFO L130 PetriNetUnfolder]: For 207254/207319 co-relation queries the response was YES. [2020-02-10 23:30:26,515 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:26,516 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:26,516 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:26,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:26,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1178438940, now seen corresponding path program 28 times [2020-02-10 23:30:26,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:26,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524775517] [2020-02-10 23:30:26,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:26,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524775517] [2020-02-10 23:30:26,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:26,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:30:26,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393465635] [2020-02-10 23:30:26,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:30:26,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:26,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:30:26,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:30:26,764 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:30:26,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 223 transitions. Second operand 8 states. [2020-02-10 23:30:26,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:26,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:30:26,764 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:31,565 INFO L129 PetriNetUnfolder]: 110/2519 cut-off events. [2020-02-10 23:30:31,565 INFO L130 PetriNetUnfolder]: For 236979/237331 co-relation queries the response was YES. [2020-02-10 23:30:31,613 INFO L76 FinitePrefix]: Finished finitePrefix Result has 26252 conditions, 2519 events. 110/2519 cut-off events. For 236979/237331 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 35723 event pairs. 6/2480 useless extension candidates. Maximal degree in co-relation 26083. Up to 596 conditions per place. [2020-02-10 23:30:31,684 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 173 selfloop transitions, 69 changer transitions 1/255 dead transitions. [2020-02-10 23:30:31,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:30:31,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:30:31,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:30:31,685 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:30:31,685 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:30:31,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:30:31,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:31,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:30:31,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:30:31,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:30:31,687 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:30:31,687 INFO L178 Difference]: Start difference. First operand has 339 places, 223 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:30:31,692 INFO L206 Difference]: Finished difference. Result has 350 places, 240 transitions [2020-02-10 23:30:31,692 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=9098, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10115, PETRI_PLACES=350, PETRI_TRANSITIONS=240} [2020-02-10 23:30:31,693 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 350 places, 240 transitions [2020-02-10 23:30:34,643 INFO L129 PetriNetUnfolder]: 0/2280 cut-off events. [2020-02-10 23:30:34,644 INFO L130 PetriNetUnfolder]: For 220504/220569 co-relation queries the response was YES. [2020-02-10 23:30:34,685 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23222 conditions, 2280 events. 0/2280 cut-off events. For 220504/220569 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 33709 event pairs. 0/2161 useless extension candidates. Maximal degree in co-relation 23049. Up to 257 conditions per place. [2020-02-10 23:30:34,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 240 transitions [2020-02-10 23:30:34,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 240 transitions [2020-02-10 23:30:34,753 INFO L479 AbstractCegarLoop]: Abstraction has has 349 places, 240 transitions [2020-02-10 23:30:34,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:30:36,011 INFO L129 PetriNetUnfolder]: 0/2035 cut-off events. [2020-02-10 23:30:36,011 INFO L130 PetriNetUnfolder]: For 220504/220569 co-relation queries the response was YES. [2020-02-10 23:30:36,012 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:36,012 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:36,012 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:36,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:36,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1506821822, now seen corresponding path program 29 times [2020-02-10 23:30:36,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:36,013 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910307407] [2020-02-10 23:30:36,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:36,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:36,259 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910307407] [2020-02-10 23:30:36,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:36,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:30:36,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028461513] [2020-02-10 23:30:36,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:30:36,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:36,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:30:36,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:30:36,260 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:30:36,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 240 transitions. Second operand 8 states. [2020-02-10 23:30:36,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:36,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:30:36,261 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:41,929 INFO L129 PetriNetUnfolder]: 110/2512 cut-off events. [2020-02-10 23:30:41,929 INFO L130 PetriNetUnfolder]: For 251840/252192 co-relation queries the response was YES. [2020-02-10 23:30:41,976 INFO L76 FinitePrefix]: Finished finitePrefix Result has 26834 conditions, 2512 events. 110/2512 cut-off events. For 251840/252192 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 35627 event pairs. 6/2473 useless extension candidates. Maximal degree in co-relation 26660. Up to 596 conditions per place. [2020-02-10 23:30:42,045 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 181 selfloop transitions, 62 changer transitions 1/256 dead transitions. [2020-02-10 23:30:42,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:30:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:30:42,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:30:42,047 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:30:42,047 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:30:42,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:30:42,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:42,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:30:42,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:30:42,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:30:42,049 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:30:42,049 INFO L178 Difference]: Start difference. First operand has 349 places, 240 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:30:42,053 INFO L206 Difference]: Finished difference. Result has 358 places, 241 transitions [2020-02-10 23:30:42,053 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=10115, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10312, PETRI_PLACES=358, PETRI_TRANSITIONS=241} [2020-02-10 23:30:42,054 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 358 places, 241 transitions [2020-02-10 23:30:45,897 INFO L129 PetriNetUnfolder]: 0/2272 cut-off events. [2020-02-10 23:30:45,898 INFO L130 PetriNetUnfolder]: For 231385/231450 co-relation queries the response was YES. [2020-02-10 23:30:45,948 INFO L76 FinitePrefix]: Finished finitePrefix Result has 23612 conditions, 2272 events. 0/2272 cut-off events. For 231385/231450 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 33594 event pairs. 0/2154 useless extension candidates. Maximal degree in co-relation 23436. Up to 256 conditions per place. [2020-02-10 23:30:45,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 358 places, 241 transitions [2020-02-10 23:30:46,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 357 places, 241 transitions [2020-02-10 23:30:46,024 INFO L479 AbstractCegarLoop]: Abstraction has has 357 places, 241 transitions [2020-02-10 23:30:46,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:30:47,259 INFO L129 PetriNetUnfolder]: 0/2028 cut-off events. [2020-02-10 23:30:47,259 INFO L130 PetriNetUnfolder]: For 231385/231450 co-relation queries the response was YES. [2020-02-10 23:30:47,259 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:47,259 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:47,259 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:47,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:47,260 INFO L82 PathProgramCache]: Analyzing trace with hash 2008189464, now seen corresponding path program 30 times [2020-02-10 23:30:47,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:47,260 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318989723] [2020-02-10 23:30:47,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:47,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318989723] [2020-02-10 23:30:47,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:47,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:30:47,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728253759] [2020-02-10 23:30:47,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:30:47,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:47,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:30:47,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:30:47,457 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:30:47,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 241 transitions. Second operand 8 states. [2020-02-10 23:30:47,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:47,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:30:47,457 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:53,036 INFO L129 PetriNetUnfolder]: 110/2496 cut-off events. [2020-02-10 23:30:53,036 INFO L130 PetriNetUnfolder]: For 263483/263728 co-relation queries the response was YES. [2020-02-10 23:30:53,089 INFO L76 FinitePrefix]: Finished finitePrefix Result has 27252 conditions, 2496 events. 110/2496 cut-off events. For 263483/263728 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 35342 event pairs. 3/2456 useless extension candidates. Maximal degree in co-relation 27075. Up to 541 conditions per place. [2020-02-10 23:30:53,167 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 189 selfloop transitions, 92 changer transitions 4/297 dead transitions. [2020-02-10 23:30:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:30:53,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:30:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:30:53,168 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:30:53,168 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:30:53,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:30:53,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:53,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:30:53,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:30:53,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:30:53,170 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:30:53,170 INFO L178 Difference]: Start difference. First operand has 357 places, 241 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:30:53,175 INFO L206 Difference]: Finished difference. Result has 367 places, 248 transitions [2020-02-10 23:30:53,175 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=10312, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10770, PETRI_PLACES=367, PETRI_TRANSITIONS=248} [2020-02-10 23:30:53,176 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 367 places, 248 transitions [2020-02-10 23:30:56,203 INFO L129 PetriNetUnfolder]: 0/2266 cut-off events. [2020-02-10 23:30:56,203 INFO L130 PetriNetUnfolder]: For 242782/242847 co-relation queries the response was YES. [2020-02-10 23:30:56,249 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24109 conditions, 2266 events. 0/2266 cut-off events. For 242782/242847 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 33464 event pairs. 0/2148 useless extension candidates. Maximal degree in co-relation 23929. Up to 255 conditions per place. [2020-02-10 23:30:56,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 248 transitions [2020-02-10 23:30:56,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 366 places, 248 transitions [2020-02-10 23:30:56,316 INFO L479 AbstractCegarLoop]: Abstraction has has 366 places, 248 transitions [2020-02-10 23:30:56,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:30:57,632 INFO L129 PetriNetUnfolder]: 0/2023 cut-off events. [2020-02-10 23:30:57,633 INFO L130 PetriNetUnfolder]: For 243016/243104 co-relation queries the response was YES. [2020-02-10 23:30:57,633 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:57,633 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:57,633 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:57,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:57,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1910128712, now seen corresponding path program 31 times [2020-02-10 23:30:57,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:57,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830878464] [2020-02-10 23:30:57,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:57,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830878464] [2020-02-10 23:30:57,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:57,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:30:57,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347689615] [2020-02-10 23:30:57,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:30:57,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:57,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:30:57,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:30:57,878 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:30:57,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 248 transitions. Second operand 8 states. [2020-02-10 23:30:57,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:57,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:30:57,879 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:03,412 INFO L129 PetriNetUnfolder]: 110/2496 cut-off events. [2020-02-10 23:31:03,412 INFO L130 PetriNetUnfolder]: For 275773/275981 co-relation queries the response was YES. [2020-02-10 23:31:03,461 INFO L76 FinitePrefix]: Finished finitePrefix Result has 27798 conditions, 2496 events. 110/2496 cut-off events. For 275773/275981 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 35340 event pairs. 1/2452 useless extension candidates. Maximal degree in co-relation 27617. Up to 481 conditions per place. [2020-02-10 23:31:03,533 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 166 selfloop transitions, 85 changer transitions 3/266 dead transitions. [2020-02-10 23:31:03,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:31:03,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:31:03,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:31:03,535 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:31:03,535 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:31:03,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:31:03,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:03,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:31:03,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:31:03,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:31:03,537 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:31:03,537 INFO L178 Difference]: Start difference. First operand has 366 places, 248 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:31:03,541 INFO L206 Difference]: Finished difference. Result has 375 places, 249 transitions [2020-02-10 23:31:03,541 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=10770, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11021, PETRI_PLACES=375, PETRI_TRANSITIONS=249} [2020-02-10 23:31:03,541 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 375 places, 249 transitions [2020-02-10 23:31:07,182 INFO L129 PetriNetUnfolder]: 0/2257 cut-off events. [2020-02-10 23:31:07,182 INFO L130 PetriNetUnfolder]: For 255346/255434 co-relation queries the response was YES. [2020-02-10 23:31:07,225 INFO L76 FinitePrefix]: Finished finitePrefix Result has 24547 conditions, 2257 events. 0/2257 cut-off events. For 255346/255434 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 33306 event pairs. 1/2139 useless extension candidates. Maximal degree in co-relation 24364. Up to 254 conditions per place. [2020-02-10 23:31:07,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 375 places, 249 transitions [2020-02-10 23:31:07,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 249 transitions [2020-02-10 23:31:07,288 INFO L479 AbstractCegarLoop]: Abstraction has has 374 places, 249 transitions [2020-02-10 23:31:07,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:31:08,606 INFO L129 PetriNetUnfolder]: 0/2015 cut-off events. [2020-02-10 23:31:08,606 INFO L130 PetriNetUnfolder]: For 255346/255434 co-relation queries the response was YES. [2020-02-10 23:31:08,606 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:08,606 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:08,607 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:08,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:08,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1646023494, now seen corresponding path program 32 times [2020-02-10 23:31:08,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:08,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756379289] [2020-02-10 23:31:08,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:31:08,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756379289] [2020-02-10 23:31:08,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:08,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:31:08,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509800038] [2020-02-10 23:31:08,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:31:08,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:08,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:31:08,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:31:08,857 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:31:08,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 249 transitions. Second operand 8 states. [2020-02-10 23:31:08,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:08,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:31:08,858 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:14,952 INFO L129 PetriNetUnfolder]: 110/2485 cut-off events. [2020-02-10 23:31:14,952 INFO L130 PetriNetUnfolder]: For 289766/289998 co-relation queries the response was YES. [2020-02-10 23:31:15,002 INFO L76 FinitePrefix]: Finished finitePrefix Result has 28272 conditions, 2485 events. 110/2485 cut-off events. For 289766/289998 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 35120 event pairs. 1/2446 useless extension candidates. Maximal degree in co-relation 28088. Up to 476 conditions per place. [2020-02-10 23:31:15,075 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 193 selfloop transitions, 79 changer transitions 1/285 dead transitions. [2020-02-10 23:31:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:31:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:31:15,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:31:15,077 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:31:15,077 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:31:15,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:31:15,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:15,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:31:15,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:31:15,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:31:15,078 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:31:15,078 INFO L178 Difference]: Start difference. First operand has 374 places, 249 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:31:15,083 INFO L206 Difference]: Finished difference. Result has 386 places, 257 transitions [2020-02-10 23:31:15,084 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11021, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11661, PETRI_PLACES=386, PETRI_TRANSITIONS=257} [2020-02-10 23:31:15,084 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 386 places, 257 transitions [2020-02-10 23:31:19,264 INFO L129 PetriNetUnfolder]: 0/2249 cut-off events. [2020-02-10 23:31:19,265 INFO L130 PetriNetUnfolder]: For 271060/271148 co-relation queries the response was YES. [2020-02-10 23:31:19,319 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25075 conditions, 2249 events. 0/2249 cut-off events. For 271060/271148 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 33187 event pairs. 1/2129 useless extension candidates. Maximal degree in co-relation 24886. Up to 253 conditions per place. [2020-02-10 23:31:19,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 386 places, 257 transitions [2020-02-10 23:31:19,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 385 places, 257 transitions [2020-02-10 23:31:19,400 INFO L479 AbstractCegarLoop]: Abstraction has has 385 places, 257 transitions [2020-02-10 23:31:19,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:31:20,727 INFO L129 PetriNetUnfolder]: 0/2008 cut-off events. [2020-02-10 23:31:20,727 INFO L130 PetriNetUnfolder]: For 271188/271264 co-relation queries the response was YES. [2020-02-10 23:31:20,727 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:20,727 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:20,727 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:20,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:20,728 INFO L82 PathProgramCache]: Analyzing trace with hash -88501686, now seen corresponding path program 33 times [2020-02-10 23:31:20,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:20,728 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438197750] [2020-02-10 23:31:20,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:20,957 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 23:31:20,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438197750] [2020-02-10 23:31:20,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:20,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:31:20,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38189041] [2020-02-10 23:31:20,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:31:20,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:20,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:31:20,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:31:20,959 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:31:20,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 257 transitions. Second operand 8 states. [2020-02-10 23:31:20,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:20,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:31:20,960 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:28,998 INFO L129 PetriNetUnfolder]: 90/3122 cut-off events. [2020-02-10 23:31:28,998 INFO L130 PetriNetUnfolder]: For 386150/386382 co-relation queries the response was YES. [2020-02-10 23:31:29,065 INFO L76 FinitePrefix]: Finished finitePrefix Result has 35639 conditions, 3122 events. 90/3122 cut-off events. For 386150/386382 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 47371 event pairs. 1/3079 useless extension candidates. Maximal degree in co-relation 35449. Up to 547 conditions per place. [2020-02-10 23:31:29,163 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 228 selfloop transitions, 132 changer transitions 0/372 dead transitions. [2020-02-10 23:31:29,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:31:29,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:31:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:31:29,164 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:31:29,165 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:31:29,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:31:29,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:29,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:31:29,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:31:29,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:31:29,166 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:31:29,166 INFO L178 Difference]: Start difference. First operand has 385 places, 257 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:31:29,170 INFO L206 Difference]: Finished difference. Result has 398 places, 303 transitions [2020-02-10 23:31:29,170 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=11661, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14403, PETRI_PLACES=398, PETRI_TRANSITIONS=303} [2020-02-10 23:31:29,170 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 398 places, 303 transitions [2020-02-10 23:31:34,355 INFO L129 PetriNetUnfolder]: 0/2856 cut-off events. [2020-02-10 23:31:34,355 INFO L130 PetriNetUnfolder]: For 370359/370458 co-relation queries the response was YES. [2020-02-10 23:31:34,420 INFO L76 FinitePrefix]: Finished finitePrefix Result has 33094 conditions, 2856 events. 0/2856 cut-off events. For 370359/370458 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 44369 event pairs. 4/2743 useless extension candidates. Maximal degree in co-relation 32898. Up to 323 conditions per place. [2020-02-10 23:31:34,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 398 places, 303 transitions [2020-02-10 23:31:34,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 303 transitions [2020-02-10 23:31:34,513 INFO L479 AbstractCegarLoop]: Abstraction has has 398 places, 303 transitions [2020-02-10 23:31:34,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:31:36,423 INFO L129 PetriNetUnfolder]: 0/2546 cut-off events. [2020-02-10 23:31:36,423 INFO L130 PetriNetUnfolder]: For 370681/370779 co-relation queries the response was YES. [2020-02-10 23:31:36,423 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:36,423 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:36,424 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:36,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:36,424 INFO L82 PathProgramCache]: Analyzing trace with hash -7699552, now seen corresponding path program 34 times [2020-02-10 23:31:36,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:36,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156108050] [2020-02-10 23:31:36,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:31:36,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156108050] [2020-02-10 23:31:36,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:36,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:31:36,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948435999] [2020-02-10 23:31:36,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:31:36,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:36,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:31:36,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:31:36,672 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:31:36,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 303 transitions. Second operand 8 states. [2020-02-10 23:31:36,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:36,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:31:36,672 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:44,702 INFO L129 PetriNetUnfolder]: 90/3046 cut-off events. [2020-02-10 23:31:44,702 INFO L130 PetriNetUnfolder]: For 407135/407375 co-relation queries the response was YES. [2020-02-10 23:31:44,769 INFO L76 FinitePrefix]: Finished finitePrefix Result has 36594 conditions, 3046 events. 90/3046 cut-off events. For 407135/407375 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 45928 event pairs. 1/2996 useless extension candidates. Maximal degree in co-relation 36397. Up to 550 conditions per place. [2020-02-10 23:31:44,865 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 220 selfloop transitions, 103 changer transitions 1/336 dead transitions. [2020-02-10 23:31:44,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:31:44,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:31:44,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:31:44,866 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:31:44,866 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:31:44,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:31:44,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:44,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:31:44,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:31:44,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:31:44,867 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:31:44,867 INFO L178 Difference]: Start difference. First operand has 398 places, 303 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:31:44,871 INFO L206 Difference]: Finished difference. Result has 410 places, 313 transitions [2020-02-10 23:31:44,872 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=14403, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15122, PETRI_PLACES=410, PETRI_TRANSITIONS=313} [2020-02-10 23:31:44,872 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 410 places, 313 transitions [2020-02-10 23:31:50,972 INFO L129 PetriNetUnfolder]: 0/2849 cut-off events. [2020-02-10 23:31:50,972 INFO L130 PetriNetUnfolder]: For 391318/391432 co-relation queries the response was YES. [2020-02-10 23:31:51,042 INFO L76 FinitePrefix]: Finished finitePrefix Result has 33878 conditions, 2849 events. 0/2849 cut-off events. For 391318/391432 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 44233 event pairs. 3/2735 useless extension candidates. Maximal degree in co-relation 33676. Up to 322 conditions per place. [2020-02-10 23:31:51,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 410 places, 313 transitions [2020-02-10 23:31:51,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 313 transitions [2020-02-10 23:31:51,144 INFO L479 AbstractCegarLoop]: Abstraction has has 409 places, 313 transitions [2020-02-10 23:31:51,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:31:53,257 INFO L129 PetriNetUnfolder]: 0/2540 cut-off events. [2020-02-10 23:31:53,257 INFO L130 PetriNetUnfolder]: For 391318/391432 co-relation queries the response was YES. [2020-02-10 23:31:53,257 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:53,257 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:53,257 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:53,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:53,257 INFO L82 PathProgramCache]: Analyzing trace with hash 2140703426, now seen corresponding path program 35 times [2020-02-10 23:31:53,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:53,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787056742] [2020-02-10 23:31:53,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:31:53,502 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787056742] [2020-02-10 23:31:53,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:53,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:31:53,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793602913] [2020-02-10 23:31:53,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:31:53,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:53,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:31:53,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:31:53,507 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:31:53,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 313 transitions. Second operand 8 states. [2020-02-10 23:31:53,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:53,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:31:53,507 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:01,401 INFO L129 PetriNetUnfolder]: 90/3038 cut-off events. [2020-02-10 23:32:01,402 INFO L130 PetriNetUnfolder]: For 431158/432053 co-relation queries the response was YES. [2020-02-10 23:32:01,601 INFO L76 FinitePrefix]: Finished finitePrefix Result has 37406 conditions, 3038 events. 90/3038 cut-off events. For 431158/432053 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 45746 event pairs. 2/2986 useless extension candidates. Maximal degree in co-relation 37203. Up to 599 conditions per place. [2020-02-10 23:32:01,697 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 222 selfloop transitions, 98 changer transitions 2/334 dead transitions. [2020-02-10 23:32:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:32:01,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:32:01,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:32:01,698 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:32:01,698 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:32:01,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:32:01,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:01,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:32:01,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:32:01,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:32:01,699 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:32:01,699 INFO L178 Difference]: Start difference. First operand has 409 places, 313 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:32:01,704 INFO L206 Difference]: Finished difference. Result has 417 places, 312 transitions [2020-02-10 23:32:01,704 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=15122, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15270, PETRI_PLACES=417, PETRI_TRANSITIONS=312} [2020-02-10 23:32:01,704 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 417 places, 312 transitions [2020-02-10 23:32:07,927 INFO L129 PetriNetUnfolder]: 0/2843 cut-off events. [2020-02-10 23:32:07,927 INFO L130 PetriNetUnfolder]: For 408342/408456 co-relation queries the response was YES. [2020-02-10 23:32:07,989 INFO L76 FinitePrefix]: Finished finitePrefix Result has 34446 conditions, 2843 events. 0/2843 cut-off events. For 408342/408456 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 44103 event pairs. 3/2726 useless extension candidates. Maximal degree in co-relation 34242. Up to 321 conditions per place. [2020-02-10 23:32:07,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 417 places, 312 transitions [2020-02-10 23:32:08,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 416 places, 312 transitions [2020-02-10 23:32:08,077 INFO L479 AbstractCegarLoop]: Abstraction has has 416 places, 312 transitions [2020-02-10 23:32:08,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:32:10,258 INFO L129 PetriNetUnfolder]: 0/2535 cut-off events. [2020-02-10 23:32:10,258 INFO L130 PetriNetUnfolder]: For 408342/408456 co-relation queries the response was YES. [2020-02-10 23:32:10,259 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:10,259 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:32:10,259 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:10,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1015234046, now seen corresponding path program 36 times [2020-02-10 23:32:10,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:10,259 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994388141] [2020-02-10 23:32:10,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:10,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:32:10,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994388141] [2020-02-10 23:32:10,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:10,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:32:10,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599919526] [2020-02-10 23:32:10,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:32:10,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:10,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:32:10,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:32:10,490 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:32:10,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 312 transitions. Second operand 8 states. [2020-02-10 23:32:10,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:10,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:32:10,491 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:19,488 INFO L129 PetriNetUnfolder]: 90/3030 cut-off events. [2020-02-10 23:32:19,488 INFO L130 PetriNetUnfolder]: For 449894/450928 co-relation queries the response was YES. [2020-02-10 23:32:19,558 INFO L76 FinitePrefix]: Finished finitePrefix Result has 38014 conditions, 3030 events. 90/3030 cut-off events. For 449894/450928 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 45697 event pairs. 9/2987 useless extension candidates. Maximal degree in co-relation 37809. Up to 691 conditions per place. [2020-02-10 23:32:19,658 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 259 selfloop transitions, 93 changer transitions 5/369 dead transitions. [2020-02-10 23:32:19,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:32:19,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:32:19,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:32:19,660 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:32:19,660 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:32:19,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:32:19,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:19,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:32:19,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:32:19,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:32:19,662 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:32:19,662 INFO L178 Difference]: Start difference. First operand has 416 places, 312 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:32:19,669 INFO L206 Difference]: Finished difference. Result has 428 places, 326 transitions [2020-02-10 23:32:19,669 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=15270, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16358, PETRI_PLACES=428, PETRI_TRANSITIONS=326} [2020-02-10 23:32:19,670 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 428 places, 326 transitions [2020-02-10 23:32:25,770 INFO L129 PetriNetUnfolder]: 0/2835 cut-off events. [2020-02-10 23:32:25,770 INFO L130 PetriNetUnfolder]: For 431476/431594 co-relation queries the response was YES. [2020-02-10 23:32:25,857 INFO L76 FinitePrefix]: Finished finitePrefix Result has 35156 conditions, 2835 events. 0/2835 cut-off events. For 431476/431594 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 44002 event pairs. 5/2720 useless extension candidates. Maximal degree in co-relation 34946. Up to 320 conditions per place. [2020-02-10 23:32:25,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 428 places, 326 transitions [2020-02-10 23:32:25,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 427 places, 326 transitions [2020-02-10 23:32:25,959 INFO L479 AbstractCegarLoop]: Abstraction has has 427 places, 326 transitions [2020-02-10 23:32:25,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:32:28,192 INFO L129 PetriNetUnfolder]: 0/2528 cut-off events. [2020-02-10 23:32:28,192 INFO L130 PetriNetUnfolder]: For 432624/432765 co-relation queries the response was YES. [2020-02-10 23:32:28,192 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:28,192 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:32:28,192 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:28,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:28,193 INFO L82 PathProgramCache]: Analyzing trace with hash -128867478, now seen corresponding path program 37 times [2020-02-10 23:32:28,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:28,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955149620] [2020-02-10 23:32:28,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:28,442 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 23:32:28,442 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955149620] [2020-02-10 23:32:28,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:28,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:32:28,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769476627] [2020-02-10 23:32:28,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:32:28,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:28,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:32:28,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:32:28,444 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:32:28,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 326 transitions. Second operand 8 states. [2020-02-10 23:32:28,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:28,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:32:28,444 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:37,967 INFO L129 PetriNetUnfolder]: 90/3024 cut-off events. [2020-02-10 23:32:37,967 INFO L130 PetriNetUnfolder]: For 475506/476434 co-relation queries the response was YES. [2020-02-10 23:32:38,036 INFO L76 FinitePrefix]: Finished finitePrefix Result has 38807 conditions, 3024 events. 90/3024 cut-off events. For 475506/476434 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 45564 event pairs. 3/2972 useless extension candidates. Maximal degree in co-relation 38596. Up to 599 conditions per place. [2020-02-10 23:32:38,136 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 228 selfloop transitions, 102 changer transitions 2/344 dead transitions. [2020-02-10 23:32:38,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:32:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:32:38,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:32:38,137 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:32:38,137 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:32:38,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:32:38,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:38,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:32:38,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:32:38,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:32:38,139 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:32:38,139 INFO L178 Difference]: Start difference. First operand has 427 places, 326 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:32:38,143 INFO L206 Difference]: Finished difference. Result has 436 places, 326 transitions [2020-02-10 23:32:38,143 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16358, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16547, PETRI_PLACES=436, PETRI_TRANSITIONS=326} [2020-02-10 23:32:38,144 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 436 places, 326 transitions [2020-02-10 23:32:43,205 INFO L129 PetriNetUnfolder]: 0/2829 cut-off events. [2020-02-10 23:32:43,205 INFO L130 PetriNetUnfolder]: For 449862/450003 co-relation queries the response was YES. [2020-02-10 23:32:43,272 INFO L76 FinitePrefix]: Finished finitePrefix Result has 35703 conditions, 2829 events. 0/2829 cut-off events. For 449862/450003 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 43813 event pairs. 9/2713 useless extension candidates. Maximal degree in co-relation 35490. Up to 319 conditions per place. [2020-02-10 23:32:43,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 326 transitions [2020-02-10 23:32:43,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 435 places, 326 transitions [2020-02-10 23:32:43,365 INFO L479 AbstractCegarLoop]: Abstraction has has 435 places, 326 transitions [2020-02-10 23:32:43,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:32:45,468 INFO L129 PetriNetUnfolder]: 0/2523 cut-off events. [2020-02-10 23:32:45,468 INFO L130 PetriNetUnfolder]: For 448611/448718 co-relation queries the response was YES. [2020-02-10 23:32:45,468 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:45,468 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:32:45,469 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:45,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:45,469 INFO L82 PathProgramCache]: Analyzing trace with hash 921807188, now seen corresponding path program 38 times [2020-02-10 23:32:45,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:45,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046333949] [2020-02-10 23:32:45,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:32:45,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046333949] [2020-02-10 23:32:45,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:45,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:32:45,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314787078] [2020-02-10 23:32:45,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:32:45,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:45,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:32:45,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:32:45,724 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:32:45,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 326 transitions. Second operand 8 states. [2020-02-10 23:32:45,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:45,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:32:45,725 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:56,434 INFO L129 PetriNetUnfolder]: 68/3278 cut-off events. [2020-02-10 23:32:56,434 INFO L130 PetriNetUnfolder]: For 531355/532273 co-relation queries the response was YES. [2020-02-10 23:32:56,512 INFO L76 FinitePrefix]: Finished finitePrefix Result has 42129 conditions, 3278 events. 68/3278 cut-off events. For 531355/532273 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 50711 event pairs. 13/3236 useless extension candidates. Maximal degree in co-relation 41915. Up to 571 conditions per place. [2020-02-10 23:32:56,625 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 251 selfloop transitions, 113 changer transitions 1/377 dead transitions. [2020-02-10 23:32:56,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:32:56,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:32:56,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:32:56,626 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:32:56,626 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:32:56,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:32:56,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:56,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:32:56,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:32:56,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:32:56,628 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:32:56,628 INFO L178 Difference]: Start difference. First operand has 435 places, 326 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:32:56,632 INFO L206 Difference]: Finished difference. Result has 447 places, 350 transitions [2020-02-10 23:32:56,633 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=16547, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18272, PETRI_PLACES=447, PETRI_TRANSITIONS=350} [2020-02-10 23:32:56,633 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 447 places, 350 transitions [2020-02-10 23:33:03,949 INFO L129 PetriNetUnfolder]: 0/3123 cut-off events. [2020-02-10 23:33:03,950 INFO L130 PetriNetUnfolder]: For 517228/517313 co-relation queries the response was YES. [2020-02-10 23:33:04,023 INFO L76 FinitePrefix]: Finished finitePrefix Result has 40064 conditions, 3123 events. 0/3123 cut-off events. For 517228/517313 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 49388 event pairs. 6/3003 useless extension candidates. Maximal degree in co-relation 39845. Up to 351 conditions per place. [2020-02-10 23:33:04,023 INFO L82 GeneralOperation]: Start removeDead. Operand has 447 places, 350 transitions [2020-02-10 23:33:04,126 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 447 places, 350 transitions [2020-02-10 23:33:04,126 INFO L479 AbstractCegarLoop]: Abstraction has has 447 places, 350 transitions [2020-02-10 23:33:04,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:33:06,926 INFO L129 PetriNetUnfolder]: 0/2786 cut-off events. [2020-02-10 23:33:06,926 INFO L130 PetriNetUnfolder]: For 518402/518496 co-relation queries the response was YES. [2020-02-10 23:33:06,926 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:33:06,926 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:33:06,926 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:33:06,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:33:06,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1611095776, now seen corresponding path program 39 times [2020-02-10 23:33:06,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:33:06,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715301766] [2020-02-10 23:33:06,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:33:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:33:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:33:07,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715301766] [2020-02-10 23:33:07,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:33:07,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:33:07,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830405307] [2020-02-10 23:33:07,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:33:07,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:33:07,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:33:07,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:33:07,144 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:33:07,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 350 transitions. Second operand 8 states. [2020-02-10 23:33:07,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:33:07,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:33:07,144 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:18,084 INFO L129 PetriNetUnfolder]: 68/3263 cut-off events. [2020-02-10 23:33:18,084 INFO L130 PetriNetUnfolder]: For 557234/557840 co-relation queries the response was YES. [2020-02-10 23:33:18,164 INFO L76 FinitePrefix]: Finished finitePrefix Result has 42991 conditions, 3263 events. 68/3263 cut-off events. For 557234/557840 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 50369 event pairs. 7/3219 useless extension candidates. Maximal degree in co-relation 42771. Up to 680 conditions per place. [2020-02-10 23:33:18,279 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 266 selfloop transitions, 122 changer transitions 4/404 dead transitions. [2020-02-10 23:33:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:33:18,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:33:18,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:33:18,280 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:33:18,280 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:33:18,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:33:18,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:18,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:33:18,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:33:18,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:33:18,281 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:33:18,281 INFO L178 Difference]: Start difference. First operand has 447 places, 350 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:33:18,286 INFO L206 Difference]: Finished difference. Result has 455 places, 349 transitions [2020-02-10 23:33:18,287 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18272, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18488, PETRI_PLACES=455, PETRI_TRANSITIONS=349} [2020-02-10 23:33:18,287 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 455 places, 349 transitions [2020-02-10 23:33:25,696 INFO L129 PetriNetUnfolder]: 0/3115 cut-off events. [2020-02-10 23:33:25,696 INFO L130 PetriNetUnfolder]: For 537662/537754 co-relation queries the response was YES. [2020-02-10 23:33:25,776 INFO L76 FinitePrefix]: Finished finitePrefix Result has 40690 conditions, 3115 events. 0/3115 cut-off events. For 537662/537754 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 49197 event pairs. 6/2999 useless extension candidates. Maximal degree in co-relation 40469. Up to 350 conditions per place. [2020-02-10 23:33:25,776 INFO L82 GeneralOperation]: Start removeDead. Operand has 455 places, 349 transitions [2020-02-10 23:33:25,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 454 places, 349 transitions [2020-02-10 23:33:25,880 INFO L479 AbstractCegarLoop]: Abstraction has has 454 places, 349 transitions [2020-02-10 23:33:25,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:33:28,716 INFO L129 PetriNetUnfolder]: 0/2779 cut-off events. [2020-02-10 23:33:28,716 INFO L130 PetriNetUnfolder]: For 536484/536588 co-relation queries the response was YES. [2020-02-10 23:33:28,716 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:33:28,716 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:33:28,717 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:33:28,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:33:28,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1415424898, now seen corresponding path program 40 times [2020-02-10 23:33:28,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:33:28,717 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729350447] [2020-02-10 23:33:28,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:33:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:33:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:33:28,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729350447] [2020-02-10 23:33:28,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:33:28,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:33:28,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549377152] [2020-02-10 23:33:28,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:33:28,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:33:28,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:33:28,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:33:28,936 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:33:28,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 349 transitions. Second operand 8 states. [2020-02-10 23:33:28,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:33:28,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:33:28,937 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:40,242 INFO L129 PetriNetUnfolder]: 68/3258 cut-off events. [2020-02-10 23:33:40,242 INFO L130 PetriNetUnfolder]: For 577943/578576 co-relation queries the response was YES. [2020-02-10 23:33:40,323 INFO L76 FinitePrefix]: Finished finitePrefix Result has 43657 conditions, 3258 events. 68/3258 cut-off events. For 577943/578576 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 50321 event pairs. 11/3222 useless extension candidates. Maximal degree in co-relation 43435. Up to 800 conditions per place. [2020-02-10 23:33:40,439 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 256 selfloop transitions, 123 changer transitions 5/396 dead transitions. [2020-02-10 23:33:40,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:33:40,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:33:40,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:33:40,440 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:33:40,440 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:33:40,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:33:40,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:40,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:33:40,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:33:40,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:33:40,442 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:33:40,442 INFO L178 Difference]: Start difference. First operand has 454 places, 349 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:33:40,450 INFO L206 Difference]: Finished difference. Result has 465 places, 360 transitions [2020-02-10 23:33:40,451 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=18488, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19308, PETRI_PLACES=465, PETRI_TRANSITIONS=360} [2020-02-10 23:33:40,451 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 465 places, 360 transitions [2020-02-10 23:33:47,833 INFO L129 PetriNetUnfolder]: 0/3104 cut-off events. [2020-02-10 23:33:47,833 INFO L130 PetriNetUnfolder]: For 561974/562082 co-relation queries the response was YES. [2020-02-10 23:33:47,910 INFO L76 FinitePrefix]: Finished finitePrefix Result has 41413 conditions, 3104 events. 0/3104 cut-off events. For 561974/562082 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 48871 event pairs. 2/2986 useless extension candidates. Maximal degree in co-relation 41187. Up to 349 conditions per place. [2020-02-10 23:33:47,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 465 places, 360 transitions [2020-02-10 23:33:48,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 464 places, 360 transitions [2020-02-10 23:33:48,021 INFO L479 AbstractCegarLoop]: Abstraction has has 464 places, 360 transitions [2020-02-10 23:33:48,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:33:50,723 INFO L129 PetriNetUnfolder]: 0/2769 cut-off events. [2020-02-10 23:33:50,724 INFO L130 PetriNetUnfolder]: For 563719/563822 co-relation queries the response was YES. [2020-02-10 23:33:50,724 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:33:50,724 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:33:50,724 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:33:50,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:33:50,724 INFO L82 PathProgramCache]: Analyzing trace with hash -574828414, now seen corresponding path program 41 times [2020-02-10 23:33:50,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:33:50,724 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097008074] [2020-02-10 23:33:50,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:33:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:33:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:33:50,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097008074] [2020-02-10 23:33:50,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:33:50,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:33:50,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951837648] [2020-02-10 23:33:50,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:33:50,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:33:50,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:33:50,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:33:50,937 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:33:50,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 360 transitions. Second operand 8 states. [2020-02-10 23:33:50,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:33:50,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:33:50,938 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:03,777 INFO L129 PetriNetUnfolder]: 68/3246 cut-off events. [2020-02-10 23:34:03,777 INFO L130 PetriNetUnfolder]: For 604439/604973 co-relation queries the response was YES. [2020-02-10 23:34:03,862 INFO L76 FinitePrefix]: Finished finitePrefix Result has 44395 conditions, 3246 events. 68/3246 cut-off events. For 604439/604973 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 50038 event pairs. 1/3198 useless extension candidates. Maximal degree in co-relation 44168. Up to 683 conditions per place. [2020-02-10 23:34:03,985 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 266 selfloop transitions, 132 changer transitions 0/410 dead transitions. [2020-02-10 23:34:03,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:34:03,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:34:03,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:34:03,986 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:34:03,986 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:34:03,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:34:03,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:03,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:34:03,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:34:03,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:34:03,989 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:34:03,989 INFO L178 Difference]: Start difference. First operand has 464 places, 360 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:34:03,996 INFO L206 Difference]: Finished difference. Result has 475 places, 367 transitions [2020-02-10 23:34:03,997 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=19308, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19885, PETRI_PLACES=475, PETRI_TRANSITIONS=367} [2020-02-10 23:34:03,997 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 475 places, 367 transitions [2020-02-10 23:34:11,080 INFO L129 PetriNetUnfolder]: 0/3103 cut-off events. [2020-02-10 23:34:11,080 INFO L130 PetriNetUnfolder]: For 586383/586485 co-relation queries the response was YES. [2020-02-10 23:34:11,159 INFO L76 FinitePrefix]: Finished finitePrefix Result has 42148 conditions, 3103 events. 0/3103 cut-off events. For 586383/586485 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 49010 event pairs. 7/2990 useless extension candidates. Maximal degree in co-relation 41917. Up to 349 conditions per place. [2020-02-10 23:34:11,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 475 places, 367 transitions [2020-02-10 23:34:11,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 475 places, 367 transitions [2020-02-10 23:34:11,268 INFO L479 AbstractCegarLoop]: Abstraction has has 475 places, 367 transitions [2020-02-10 23:34:11,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:34:14,066 INFO L129 PetriNetUnfolder]: 0/2769 cut-off events. [2020-02-10 23:34:14,066 INFO L130 PetriNetUnfolder]: For 585123/585219 co-relation queries the response was YES. [2020-02-10 23:34:14,066 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:34:14,066 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:34:14,067 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:34:14,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:34:14,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1439545282, now seen corresponding path program 42 times [2020-02-10 23:34:14,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:34:14,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553801720] [2020-02-10 23:34:14,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:34:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:34:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:34:14,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553801720] [2020-02-10 23:34:14,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:34:14,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:34:14,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587208374] [2020-02-10 23:34:14,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:34:14,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:34:14,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:34:14,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:34:14,292 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:34:14,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 367 transitions. Second operand 8 states. [2020-02-10 23:34:14,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:34:14,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:34:14,293 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:26,828 INFO L129 PetriNetUnfolder]: 68/3249 cut-off events. [2020-02-10 23:34:26,829 INFO L130 PetriNetUnfolder]: For 628690/629224 co-relation queries the response was YES. [2020-02-10 23:34:26,913 INFO L76 FinitePrefix]: Finished finitePrefix Result has 45184 conditions, 3249 events. 68/3249 cut-off events. For 628690/629224 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 50113 event pairs. 1/3202 useless extension candidates. Maximal degree in co-relation 44952. Up to 641 conditions per place. [2020-02-10 23:34:27,036 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 261 selfloop transitions, 109 changer transitions 1/383 dead transitions. [2020-02-10 23:34:27,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:34:27,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:34:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:34:27,038 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:34:27,038 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:34:27,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:34:27,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:27,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:34:27,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:34:27,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:34:27,040 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:34:27,040 INFO L178 Difference]: Start difference. First operand has 475 places, 367 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:34:27,048 INFO L206 Difference]: Finished difference. Result has 483 places, 366 transitions [2020-02-10 23:34:27,048 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=19885, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=20061, PETRI_PLACES=483, PETRI_TRANSITIONS=366} [2020-02-10 23:34:27,049 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 483 places, 366 transitions [2020-02-10 23:34:35,067 INFO L129 PetriNetUnfolder]: 0/3095 cut-off events. [2020-02-10 23:34:35,067 INFO L130 PetriNetUnfolder]: For 606582/606679 co-relation queries the response was YES. [2020-02-10 23:34:35,143 INFO L76 FinitePrefix]: Finished finitePrefix Result has 42754 conditions, 3095 events. 0/3095 cut-off events. For 606582/606679 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 48845 event pairs. 5/2980 useless extension candidates. Maximal degree in co-relation 42521. Up to 348 conditions per place. [2020-02-10 23:34:35,143 INFO L82 GeneralOperation]: Start removeDead. Operand has 483 places, 366 transitions [2020-02-10 23:34:35,251 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 482 places, 366 transitions [2020-02-10 23:34:35,252 INFO L479 AbstractCegarLoop]: Abstraction has has 482 places, 366 transitions [2020-02-10 23:34:35,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:34:38,326 INFO L129 PetriNetUnfolder]: 0/2762 cut-off events. [2020-02-10 23:34:38,326 INFO L130 PetriNetUnfolder]: For 606582/606679 co-relation queries the response was YES. [2020-02-10 23:34:38,326 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:34:38,326 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:34:38,326 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:34:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:34:38,327 INFO L82 PathProgramCache]: Analyzing trace with hash -344362794, now seen corresponding path program 43 times [2020-02-10 23:34:38,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:34:38,327 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512847350] [2020-02-10 23:34:38,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:34:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:34:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:34:38,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512847350] [2020-02-10 23:34:38,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:34:38,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:34:38,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275887009] [2020-02-10 23:34:38,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:34:38,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:34:38,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:34:38,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:34:38,577 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:34:38,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 366 transitions. Second operand 8 states. [2020-02-10 23:34:38,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:34:38,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:34:38,577 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:51,445 INFO L129 PetriNetUnfolder]: 59/3386 cut-off events. [2020-02-10 23:34:51,445 INFO L130 PetriNetUnfolder]: For 684732/685260 co-relation queries the response was YES. [2020-02-10 23:34:51,533 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47831 conditions, 3386 events. 59/3386 cut-off events. For 684732/685260 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 52867 event pairs. 5/3342 useless extension candidates. Maximal degree in co-relation 47597. Up to 573 conditions per place. [2020-02-10 23:34:51,659 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 271 selfloop transitions, 129 changer transitions 0/412 dead transitions. [2020-02-10 23:34:51,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:34:51,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:34:51,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:34:51,660 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:34:51,660 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:34:51,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:34:51,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:51,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:34:51,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:34:51,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:34:51,661 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:34:51,661 INFO L178 Difference]: Start difference. First operand has 482 places, 366 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:34:51,667 INFO L206 Difference]: Finished difference. Result has 494 places, 386 transitions [2020-02-10 23:34:51,668 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=20061, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21492, PETRI_PLACES=494, PETRI_TRANSITIONS=386} [2020-02-10 23:34:51,668 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 494 places, 386 transitions [2020-02-10 23:35:00,034 INFO L129 PetriNetUnfolder]: 0/3249 cut-off events. [2020-02-10 23:35:00,034 INFO L130 PetriNetUnfolder]: For 671559/671636 co-relation queries the response was YES. [2020-02-10 23:35:00,118 INFO L76 FinitePrefix]: Finished finitePrefix Result has 45889 conditions, 3249 events. 0/3249 cut-off events. For 671559/671636 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 51721 event pairs. 3/3136 useless extension candidates. Maximal degree in co-relation 45650. Up to 366 conditions per place. [2020-02-10 23:35:00,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 494 places, 386 transitions [2020-02-10 23:35:00,235 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 494 places, 386 transitions [2020-02-10 23:35:00,236 INFO L479 AbstractCegarLoop]: Abstraction has has 494 places, 386 transitions [2020-02-10 23:35:00,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:35:03,557 INFO L129 PetriNetUnfolder]: 0/2899 cut-off events. [2020-02-10 23:35:03,557 INFO L130 PetriNetUnfolder]: For 671559/671636 co-relation queries the response was YES. [2020-02-10 23:35:03,557 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:03,558 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:03,558 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:03,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:03,558 INFO L82 PathProgramCache]: Analyzing trace with hash -9150522, now seen corresponding path program 44 times [2020-02-10 23:35:03,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:03,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940341553] [2020-02-10 23:35:03,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:35:03,777 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940341553] [2020-02-10 23:35:03,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:03,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:35:03,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505790138] [2020-02-10 23:35:03,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:35:03,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:03,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:35:03,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:35:03,779 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:35:03,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 386 transitions. Second operand 8 states. [2020-02-10 23:35:03,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:03,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:35:03,779 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:16,546 INFO L129 PetriNetUnfolder]: 58/3387 cut-off events. [2020-02-10 23:35:16,547 INFO L130 PetriNetUnfolder]: For 718682/719314 co-relation queries the response was YES. [2020-02-10 23:35:16,637 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48944 conditions, 3387 events. 58/3387 cut-off events. For 718682/719314 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 52929 event pairs. 9/3341 useless extension candidates. Maximal degree in co-relation 48704. Up to 705 conditions per place. [2020-02-10 23:35:16,766 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 288 selfloop transitions, 132 changer transitions 3/435 dead transitions. [2020-02-10 23:35:16,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:35:16,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:35:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:35:16,768 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:35:16,768 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:35:16,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:35:16,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:16,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:35:16,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:35:16,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:35:16,769 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:35:16,769 INFO L178 Difference]: Start difference. First operand has 494 places, 386 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:35:16,775 INFO L206 Difference]: Finished difference. Result has 505 places, 391 transitions [2020-02-10 23:35:16,776 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=21492, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22049, PETRI_PLACES=505, PETRI_TRANSITIONS=391} [2020-02-10 23:35:16,776 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 505 places, 391 transitions [2020-02-10 23:35:24,942 INFO L129 PetriNetUnfolder]: 0/3258 cut-off events. [2020-02-10 23:35:24,942 INFO L130 PetriNetUnfolder]: For 701093/701166 co-relation queries the response was YES. [2020-02-10 23:35:25,029 INFO L76 FinitePrefix]: Finished finitePrefix Result has 46845 conditions, 3258 events. 0/3258 cut-off events. For 701093/701166 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 51826 event pairs. 3/3136 useless extension candidates. Maximal degree in co-relation 46601. Up to 367 conditions per place. [2020-02-10 23:35:25,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 505 places, 391 transitions [2020-02-10 23:35:25,150 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 504 places, 391 transitions [2020-02-10 23:35:25,150 INFO L479 AbstractCegarLoop]: Abstraction has has 504 places, 391 transitions [2020-02-10 23:35:25,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:35:28,438 INFO L129 PetriNetUnfolder]: 0/2907 cut-off events. [2020-02-10 23:35:28,439 INFO L130 PetriNetUnfolder]: For 701147/701229 co-relation queries the response was YES. [2020-02-10 23:35:28,439 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:28,439 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:28,439 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:28,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:28,439 INFO L82 PathProgramCache]: Analyzing trace with hash -590654096, now seen corresponding path program 45 times [2020-02-10 23:35:28,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:28,440 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914638472] [2020-02-10 23:35:28,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:28,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:35:28,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914638472] [2020-02-10 23:35:28,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:28,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:35:28,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424503038] [2020-02-10 23:35:28,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:35:28,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:28,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:35:28,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:35:28,748 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:35:28,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 391 transitions. Second operand 8 states. [2020-02-10 23:35:28,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:28,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:35:28,749 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:35:42,732 INFO L129 PetriNetUnfolder]: 58/3393 cut-off events. [2020-02-10 23:35:42,732 INFO L130 PetriNetUnfolder]: For 746954/747452 co-relation queries the response was YES. [2020-02-10 23:35:42,825 INFO L76 FinitePrefix]: Finished finitePrefix Result has 49759 conditions, 3393 events. 58/3393 cut-off events. For 746954/747452 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 52984 event pairs. 5/3347 useless extension candidates. Maximal degree in co-relation 49514. Up to 576 conditions per place. [2020-02-10 23:35:42,956 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 279 selfloop transitions, 132 changer transitions 0/423 dead transitions. [2020-02-10 23:35:42,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:35:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:35:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:35:42,957 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:35:42,957 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:35:42,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:35:42,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:35:42,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:35:42,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:35:42,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:35:42,958 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:35:42,959 INFO L178 Difference]: Start difference. First operand has 504 places, 391 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:35:42,967 INFO L206 Difference]: Finished difference. Result has 513 places, 405 transitions [2020-02-10 23:35:42,968 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=22049, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=23089, PETRI_PLACES=513, PETRI_TRANSITIONS=405} [2020-02-10 23:35:42,968 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 513 places, 405 transitions [2020-02-10 23:35:51,931 INFO L129 PetriNetUnfolder]: 0/3257 cut-off events. [2020-02-10 23:35:51,931 INFO L130 PetriNetUnfolder]: For 727223/727305 co-relation queries the response was YES. [2020-02-10 23:35:52,019 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47572 conditions, 3257 events. 0/3257 cut-off events. For 727223/727305 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 51767 event pairs. 2/3132 useless extension candidates. Maximal degree in co-relation 47325. Up to 367 conditions per place. [2020-02-10 23:35:52,019 INFO L82 GeneralOperation]: Start removeDead. Operand has 513 places, 405 transitions [2020-02-10 23:35:52,141 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 513 places, 405 transitions [2020-02-10 23:35:52,141 INFO L479 AbstractCegarLoop]: Abstraction has has 513 places, 405 transitions [2020-02-10 23:35:52,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:35:55,252 INFO L129 PetriNetUnfolder]: 0/2907 cut-off events. [2020-02-10 23:35:55,252 INFO L130 PetriNetUnfolder]: For 727566/727723 co-relation queries the response was YES. [2020-02-10 23:35:55,252 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:55,252 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:55,252 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:55,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:55,253 INFO L82 PathProgramCache]: Analyzing trace with hash -314011066, now seen corresponding path program 46 times [2020-02-10 23:35:55,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:55,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717504785] [2020-02-10 23:35:55,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:35:55,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717504785] [2020-02-10 23:35:55,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:55,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:35:55,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716288058] [2020-02-10 23:35:55,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:35:55,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:55,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:35:55,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:35:55,526 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:35:55,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 405 transitions. Second operand 8 states. [2020-02-10 23:35:55,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:55,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:35:55,527 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:36:09,431 INFO L129 PetriNetUnfolder]: 58/3381 cut-off events. [2020-02-10 23:36:09,431 INFO L130 PetriNetUnfolder]: For 773202/774201 co-relation queries the response was YES. [2020-02-10 23:36:09,524 INFO L76 FinitePrefix]: Finished finitePrefix Result has 50462 conditions, 3381 events. 58/3381 cut-off events. For 773202/774201 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 52778 event pairs. 17/3342 useless extension candidates. Maximal degree in co-relation 50214. Up to 852 conditions per place. [2020-02-10 23:36:09,656 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 325 selfloop transitions, 89 changer transitions 3/429 dead transitions. [2020-02-10 23:36:09,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:36:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:36:09,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:36:09,658 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:36:09,658 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:36:09,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:36:09,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:36:09,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:36:09,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:36:09,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:36:09,660 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:36:09,660 INFO L178 Difference]: Start difference. First operand has 513 places, 405 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:36:09,667 INFO L206 Difference]: Finished difference. Result has 523 places, 407 transitions [2020-02-10 23:36:09,667 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=23089, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=23362, PETRI_PLACES=523, PETRI_TRANSITIONS=407} [2020-02-10 23:36:09,667 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 523 places, 407 transitions [2020-02-10 23:36:18,672 INFO L129 PetriNetUnfolder]: 0/3251 cut-off events. [2020-02-10 23:36:18,672 INFO L130 PetriNetUnfolder]: For 750812/750967 co-relation queries the response was YES. [2020-02-10 23:36:18,761 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48166 conditions, 3251 events. 0/3251 cut-off events. For 750812/750967 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 51545 event pairs. 1/3119 useless extension candidates. Maximal degree in co-relation 47915. Up to 366 conditions per place. [2020-02-10 23:36:18,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 523 places, 407 transitions [2020-02-10 23:36:18,884 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 522 places, 407 transitions [2020-02-10 23:36:18,884 INFO L479 AbstractCegarLoop]: Abstraction has has 522 places, 407 transitions [2020-02-10 23:36:18,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:36:22,028 INFO L129 PetriNetUnfolder]: 0/2902 cut-off events. [2020-02-10 23:36:22,029 INFO L130 PetriNetUnfolder]: For 750758/750890 co-relation queries the response was YES. [2020-02-10 23:36:22,029 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:36:22,029 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:36:22,029 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:36:22,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:36:22,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1912850298, now seen corresponding path program 47 times [2020-02-10 23:36:22,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:36:22,030 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447958061] [2020-02-10 23:36:22,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:36:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:36:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:36:22,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447958061] [2020-02-10 23:36:22,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:36:22,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:36:22,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047841001] [2020-02-10 23:36:22,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:36:22,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:36:22,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:36:22,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:36:22,251 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:36:22,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 407 transitions. Second operand 8 states. [2020-02-10 23:36:22,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:36:22,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:36:22,251 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:36:37,923 INFO L129 PetriNetUnfolder]: 48/3529 cut-off events. [2020-02-10 23:36:37,924 INFO L130 PetriNetUnfolder]: For 843299/844132 co-relation queries the response was YES. [2020-02-10 23:36:38,023 INFO L76 FinitePrefix]: Finished finitePrefix Result has 53355 conditions, 3529 events. 48/3529 cut-off events. For 843299/844132 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 55669 event pairs. 1/3472 useless extension candidates. Maximal degree in co-relation 53103. Up to 672 conditions per place. [2020-02-10 23:36:38,363 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 274 selfloop transitions, 163 changer transitions 1/450 dead transitions. [2020-02-10 23:36:38,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:36:38,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:36:38,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:36:38,364 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:36:38,364 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:36:38,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:36:38,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:36:38,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:36:38,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:36:38,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:36:38,366 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:36:38,366 INFO L178 Difference]: Start difference. First operand has 522 places, 407 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:36:38,374 INFO L206 Difference]: Finished difference. Result has 534 places, 423 transitions [2020-02-10 23:36:38,375 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=23362, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=24719, PETRI_PLACES=534, PETRI_TRANSITIONS=423} [2020-02-10 23:36:38,375 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 534 places, 423 transitions [2020-02-10 23:36:47,383 INFO L129 PetriNetUnfolder]: 0/3421 cut-off events. [2020-02-10 23:36:47,383 INFO L130 PetriNetUnfolder]: For 833270/833380 co-relation queries the response was YES. [2020-02-10 23:36:47,480 INFO L76 FinitePrefix]: Finished finitePrefix Result has 51589 conditions, 3421 events. 0/3421 cut-off events. For 833270/833380 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 54844 event pairs. 1/3295 useless extension candidates. Maximal degree in co-relation 51332. Up to 384 conditions per place. [2020-02-10 23:36:47,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 534 places, 423 transitions [2020-02-10 23:36:47,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 533 places, 423 transitions [2020-02-10 23:36:47,613 INFO L479 AbstractCegarLoop]: Abstraction has has 533 places, 423 transitions [2020-02-10 23:36:47,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:36:51,143 INFO L129 PetriNetUnfolder]: 0/3054 cut-off events. [2020-02-10 23:36:51,143 INFO L130 PetriNetUnfolder]: For 832762/832870 co-relation queries the response was YES. [2020-02-10 23:36:51,143 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:36:51,143 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:36:51,144 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:36:51,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:36:51,144 INFO L82 PathProgramCache]: Analyzing trace with hash 496734910, now seen corresponding path program 48 times [2020-02-10 23:36:51,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:36:51,144 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005138513] [2020-02-10 23:36:51,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:36:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:36:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:36:51,444 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005138513] [2020-02-10 23:36:51,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:36:51,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:36:51,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294494285] [2020-02-10 23:36:51,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:36:51,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:36:51,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:36:51,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:36:51,446 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:36:51,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 423 transitions. Second operand 8 states. [2020-02-10 23:36:51,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:36:51,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:36:51,447 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:37:07,345 INFO L129 PetriNetUnfolder]: 48/3524 cut-off events. [2020-02-10 23:37:07,346 INFO L130 PetriNetUnfolder]: For 879988/881434 co-relation queries the response was YES. [2020-02-10 23:37:07,446 INFO L76 FinitePrefix]: Finished finitePrefix Result has 54273 conditions, 3524 events. 48/3524 cut-off events. For 879988/881434 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 55634 event pairs. 13/3477 useless extension candidates. Maximal degree in co-relation 54015. Up to 859 conditions per place. [2020-02-10 23:37:07,590 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 317 selfloop transitions, 116 changer transitions 0/445 dead transitions. [2020-02-10 23:37:07,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:37:07,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:37:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:37:07,591 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:37:07,591 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:37:07,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:37:07,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:37:07,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:37:07,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:37:07,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:37:07,594 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:37:07,594 INFO L178 Difference]: Start difference. First operand has 533 places, 423 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:37:07,604 INFO L206 Difference]: Finished difference. Result has 544 places, 436 transitions [2020-02-10 23:37:07,605 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=24719, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=25977, PETRI_PLACES=544, PETRI_TRANSITIONS=436} [2020-02-10 23:37:07,605 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 544 places, 436 transitions [2020-02-10 23:37:17,759 INFO L129 PetriNetUnfolder]: 0/3420 cut-off events. [2020-02-10 23:37:17,759 INFO L130 PetriNetUnfolder]: For 865330/865438 co-relation queries the response was YES. [2020-02-10 23:37:17,855 INFO L76 FinitePrefix]: Finished finitePrefix Result has 52394 conditions, 3420 events. 0/3420 cut-off events. For 865330/865438 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 54771 event pairs. 1/3291 useless extension candidates. Maximal degree in co-relation 52132. Up to 384 conditions per place. [2020-02-10 23:37:17,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 544 places, 436 transitions [2020-02-10 23:37:17,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 544 places, 436 transitions [2020-02-10 23:37:17,996 INFO L479 AbstractCegarLoop]: Abstraction has has 544 places, 436 transitions [2020-02-10 23:37:17,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:37:22,104 INFO L129 PetriNetUnfolder]: 0/3054 cut-off events. [2020-02-10 23:37:22,104 INFO L130 PetriNetUnfolder]: For 865330/865438 co-relation queries the response was YES. [2020-02-10 23:37:22,104 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:37:22,104 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:37:22,104 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:37:22,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:37:22,104 INFO L82 PathProgramCache]: Analyzing trace with hash -915637608, now seen corresponding path program 49 times [2020-02-10 23:37:22,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:37:22,105 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884243578] [2020-02-10 23:37:22,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:37:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:37:22,308 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 23:37:22,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884243578] [2020-02-10 23:37:22,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:37:22,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:37:22,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115557403] [2020-02-10 23:37:22,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:37:22,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:37:22,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:37:22,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:37:22,309 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:37:22,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 436 transitions. Second operand 8 states. [2020-02-10 23:37:22,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:37:22,310 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:37:22,310 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:37:39,231 INFO L129 PetriNetUnfolder]: 46/3550 cut-off events. [2020-02-10 23:37:39,232 INFO L130 PetriNetUnfolder]: For 922209/923655 co-relation queries the response was YES. [2020-02-10 23:37:39,334 INFO L76 FinitePrefix]: Finished finitePrefix Result has 55451 conditions, 3550 events. 46/3550 cut-off events. For 922209/923655 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 56145 event pairs. 24/3516 useless extension candidates. Maximal degree in co-relation 55188. Up to 610 conditions per place. [2020-02-10 23:37:39,479 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 301 selfloop transitions, 146 changer transitions 0/459 dead transitions. [2020-02-10 23:37:39,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:37:39,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:37:39,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:37:39,480 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:37:39,481 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:37:39,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:37:39,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:37:39,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:37:39,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:37:39,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:37:39,482 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:37:39,482 INFO L178 Difference]: Start difference. First operand has 544 places, 436 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:37:39,489 INFO L206 Difference]: Finished difference. Result has 556 places, 447 transitions [2020-02-10 23:37:39,490 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=25977, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27022, PETRI_PLACES=556, PETRI_TRANSITIONS=447} [2020-02-10 23:37:39,490 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 556 places, 447 transitions [2020-02-10 23:37:50,793 INFO L129 PetriNetUnfolder]: 0/3447 cut-off events. [2020-02-10 23:37:50,793 INFO L130 PetriNetUnfolder]: For 911893/912020 co-relation queries the response was YES. [2020-02-10 23:37:50,892 INFO L76 FinitePrefix]: Finished finitePrefix Result has 53693 conditions, 3447 events. 0/3447 cut-off events. For 911893/912020 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 55335 event pairs. 1/3319 useless extension candidates. Maximal degree in co-relation 53425. Up to 387 conditions per place. [2020-02-10 23:37:50,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 556 places, 447 transitions [2020-02-10 23:37:51,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 556 places, 447 transitions [2020-02-10 23:37:51,034 INFO L479 AbstractCegarLoop]: Abstraction has has 556 places, 447 transitions [2020-02-10 23:37:51,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:37:55,156 INFO L129 PetriNetUnfolder]: 0/3079 cut-off events. [2020-02-10 23:37:55,156 INFO L130 PetriNetUnfolder]: For 911728/911827 co-relation queries the response was YES. [2020-02-10 23:37:55,156 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:37:55,156 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:37:55,156 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:37:55,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:37:55,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1770843984, now seen corresponding path program 50 times [2020-02-10 23:37:55,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:37:55,157 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917364671] [2020-02-10 23:37:55,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:37:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:37:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:37:55,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917364671] [2020-02-10 23:37:55,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:37:55,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:37:55,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21847620] [2020-02-10 23:37:55,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:37:55,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:37:55,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:37:55,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:37:55,390 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:37:55,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 447 transitions. Second operand 8 states. [2020-02-10 23:37:55,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:37:55,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:37:55,391 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:38:12,484 INFO L129 PetriNetUnfolder]: 46/3549 cut-off events. [2020-02-10 23:38:12,484 INFO L130 PetriNetUnfolder]: For 959105/959989 co-relation queries the response was YES. [2020-02-10 23:38:12,592 INFO L76 FinitePrefix]: Finished finitePrefix Result has 56339 conditions, 3549 events. 46/3549 cut-off events. For 959105/959989 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 56055 event pairs. 10/3507 useless extension candidates. Maximal degree in co-relation 56070. Up to 621 conditions per place. [2020-02-10 23:38:12,746 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 307 selfloop transitions, 146 changer transitions 0/465 dead transitions. [2020-02-10 23:38:12,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:38:12,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:38:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:38:12,747 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:38:12,747 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:38:12,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:38:12,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:38:12,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:38:12,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:38:12,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:38:12,748 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:38:12,748 INFO L178 Difference]: Start difference. First operand has 556 places, 447 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:38:12,755 INFO L206 Difference]: Finished difference. Result has 565 places, 451 transitions [2020-02-10 23:38:12,756 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=27022, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27657, PETRI_PLACES=565, PETRI_TRANSITIONS=451} [2020-02-10 23:38:12,756 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 565 places, 451 transitions [2020-02-10 23:38:24,938 INFO L129 PetriNetUnfolder]: 0/3446 cut-off events. [2020-02-10 23:38:24,938 INFO L130 PetriNetUnfolder]: For 940718/940817 co-relation queries the response was YES. [2020-02-10 23:38:25,044 INFO L76 FinitePrefix]: Finished finitePrefix Result has 54432 conditions, 3446 events. 0/3446 cut-off events. For 940718/940817 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 55307 event pairs. 1/3320 useless extension candidates. Maximal degree in co-relation 54161. Up to 387 conditions per place. [2020-02-10 23:38:25,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 565 places, 451 transitions [2020-02-10 23:38:25,192 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 565 places, 451 transitions [2020-02-10 23:38:25,193 INFO L479 AbstractCegarLoop]: Abstraction has has 565 places, 451 transitions [2020-02-10 23:38:25,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:38:29,127 INFO L129 PetriNetUnfolder]: 0/3079 cut-off events. [2020-02-10 23:38:29,127 INFO L130 PetriNetUnfolder]: For 940718/940817 co-relation queries the response was YES. [2020-02-10 23:38:29,127 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:38:29,128 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:38:29,128 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:38:29,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:38:29,128 INFO L82 PathProgramCache]: Analyzing trace with hash 275879784, now seen corresponding path program 51 times [2020-02-10 23:38:29,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:38:29,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719948056] [2020-02-10 23:38:29,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:38:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:38:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:38:29,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719948056] [2020-02-10 23:38:29,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:38:29,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:38:29,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244394696] [2020-02-10 23:38:29,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:38:29,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:38:29,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:38:29,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:38:29,360 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:38:29,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 451 transitions. Second operand 8 states. [2020-02-10 23:38:29,360 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:38:29,360 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:38:29,360 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:38:48,875 INFO L129 PetriNetUnfolder]: 46/3544 cut-off events. [2020-02-10 23:38:48,875 INFO L130 PetriNetUnfolder]: For 988576/989460 co-relation queries the response was YES. [2020-02-10 23:38:48,986 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57068 conditions, 3544 events. 46/3544 cut-off events. For 988576/989460 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 56019 event pairs. 10/3501 useless extension candidates. Maximal degree in co-relation 56796. Up to 630 conditions per place. [2020-02-10 23:38:49,151 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 319 selfloop transitions, 153 changer transitions 2/486 dead transitions. [2020-02-10 23:38:49,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:38:49,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:38:49,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:38:49,152 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:38:49,153 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:38:49,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:38:49,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:38:49,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:38:49,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:38:49,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:38:49,154 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:38:49,154 INFO L178 Difference]: Start difference. First operand has 565 places, 451 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:38:49,161 INFO L206 Difference]: Finished difference. Result has 577 places, 463 transitions [2020-02-10 23:38:49,162 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=27657, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=28774, PETRI_PLACES=577, PETRI_TRANSITIONS=463} [2020-02-10 23:38:49,162 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 577 places, 463 transitions [2020-02-10 23:39:00,337 INFO L129 PetriNetUnfolder]: 0/3437 cut-off events. [2020-02-10 23:39:00,337 INFO L130 PetriNetUnfolder]: For 977711/977808 co-relation queries the response was YES. [2020-02-10 23:39:00,442 INFO L76 FinitePrefix]: Finished finitePrefix Result has 55224 conditions, 3437 events. 0/3437 cut-off events. For 977711/977808 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 55110 event pairs. 1/3311 useless extension candidates. Maximal degree in co-relation 54947. Up to 386 conditions per place. [2020-02-10 23:39:00,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 577 places, 463 transitions [2020-02-10 23:39:00,589 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 576 places, 463 transitions [2020-02-10 23:39:00,590 INFO L479 AbstractCegarLoop]: Abstraction has has 576 places, 463 transitions [2020-02-10 23:39:00,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:39:05,143 INFO L129 PetriNetUnfolder]: 0/3071 cut-off events. [2020-02-10 23:39:05,143 INFO L130 PetriNetUnfolder]: For 977711/977808 co-relation queries the response was YES. [2020-02-10 23:39:05,143 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:39:05,143 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:39:05,143 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:39:05,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:39:05,143 INFO L82 PathProgramCache]: Analyzing trace with hash 178784088, now seen corresponding path program 52 times [2020-02-10 23:39:05,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:39:05,144 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402970586] [2020-02-10 23:39:05,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:39:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:39:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:39:05,363 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402970586] [2020-02-10 23:39:05,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:39:05,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:39:05,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536424621] [2020-02-10 23:39:05,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:39:05,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:39:05,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:39:05,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:39:05,365 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:39:05,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 463 transitions. Second operand 8 states. [2020-02-10 23:39:05,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:39:05,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:39:05,365 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:39:24,597 INFO L129 PetriNetUnfolder]: 46/3539 cut-off events. [2020-02-10 23:39:24,598 INFO L130 PetriNetUnfolder]: For 1026270/1027109 co-relation queries the response was YES. [2020-02-10 23:39:24,713 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57868 conditions, 3539 events. 46/3539 cut-off events. For 1026270/1027109 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 55962 event pairs. 10/3497 useless extension candidates. Maximal degree in co-relation 57590. Up to 620 conditions per place. [2020-02-10 23:39:24,876 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 337 selfloop transitions, 124 changer transitions 1/474 dead transitions. [2020-02-10 23:39:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:39:24,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:39:24,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:39:24,877 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:39:24,877 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:39:24,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:39:24,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:39:24,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:39:24,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:39:24,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:39:24,878 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:39:24,878 INFO L178 Difference]: Start difference. First operand has 576 places, 463 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:39:24,886 INFO L206 Difference]: Finished difference. Result has 586 places, 469 transitions [2020-02-10 23:39:24,886 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=28774, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=29364, PETRI_PLACES=586, PETRI_TRANSITIONS=469} [2020-02-10 23:39:24,886 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 586 places, 469 transitions [2020-02-10 23:39:36,524 INFO L129 PetriNetUnfolder]: 0/3434 cut-off events. [2020-02-10 23:39:36,524 INFO L130 PetriNetUnfolder]: For 1009721/1009818 co-relation queries the response was YES. [2020-02-10 23:39:36,634 INFO L76 FinitePrefix]: Finished finitePrefix Result has 55919 conditions, 3434 events. 0/3434 cut-off events. For 1009721/1009818 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 55104 event pairs. 1/3309 useless extension candidates. Maximal degree in co-relation 55638. Up to 386 conditions per place. [2020-02-10 23:39:36,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 586 places, 469 transitions [2020-02-10 23:39:36,785 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 585 places, 469 transitions [2020-02-10 23:39:36,786 INFO L479 AbstractCegarLoop]: Abstraction has has 585 places, 469 transitions [2020-02-10 23:39:36,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:39:40,901 INFO L129 PetriNetUnfolder]: 0/3069 cut-off events. [2020-02-10 23:39:40,901 INFO L130 PetriNetUnfolder]: For 1009874/1010011 co-relation queries the response was YES. [2020-02-10 23:39:40,901 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:39:40,901 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:39:40,902 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:39:40,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:39:40,902 INFO L82 PathProgramCache]: Analyzing trace with hash -645773950, now seen corresponding path program 53 times [2020-02-10 23:39:40,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:39:40,902 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031939100] [2020-02-10 23:39:40,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:39:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:39:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:39:41,121 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031939100] [2020-02-10 23:39:41,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:39:41,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:39:41,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301510248] [2020-02-10 23:39:41,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:39:41,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:39:41,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:39:41,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:39:41,123 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:39:41,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 469 transitions. Second operand 8 states. [2020-02-10 23:39:41,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:39:41,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:39:41,123 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:39:59,553 INFO L129 PetriNetUnfolder]: 46/3531 cut-off events. [2020-02-10 23:39:59,554 INFO L130 PetriNetUnfolder]: For 1060674/1062562 co-relation queries the response was YES. [2020-02-10 23:39:59,670 INFO L76 FinitePrefix]: Finished finitePrefix Result has 58550 conditions, 3531 events. 46/3531 cut-off events. For 1060674/1062562 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 55804 event pairs. 29/3503 useless extension candidates. Maximal degree in co-relation 58268. Up to 868 conditions per place. [2020-02-10 23:39:59,834 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 358 selfloop transitions, 116 changer transitions 3/489 dead transitions. [2020-02-10 23:39:59,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:39:59,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:39:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:39:59,835 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:39:59,835 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:39:59,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:39:59,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:39:59,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:39:59,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:39:59,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:39:59,837 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:39:59,837 INFO L178 Difference]: Start difference. First operand has 585 places, 469 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:39:59,844 INFO L206 Difference]: Finished difference. Result has 594 places, 469 transitions [2020-02-10 23:39:59,845 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=29364, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=29574, PETRI_PLACES=594, PETRI_TRANSITIONS=469} [2020-02-10 23:39:59,845 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 594 places, 469 transitions [2020-02-10 23:40:10,970 INFO L129 PetriNetUnfolder]: 0/3429 cut-off events. [2020-02-10 23:40:10,970 INFO L130 PetriNetUnfolder]: For 1037241/1037378 co-relation queries the response was YES. [2020-02-10 23:40:11,081 INFO L76 FinitePrefix]: Finished finitePrefix Result has 56507 conditions, 3429 events. 0/3429 cut-off events. For 1037241/1037378 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 55010 event pairs. 0/3302 useless extension candidates. Maximal degree in co-relation 56223. Up to 386 conditions per place. [2020-02-10 23:40:11,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 594 places, 469 transitions [2020-02-10 23:40:11,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 593 places, 469 transitions [2020-02-10 23:40:11,235 INFO L479 AbstractCegarLoop]: Abstraction has has 593 places, 469 transitions [2020-02-10 23:40:11,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:40:16,644 INFO L129 PetriNetUnfolder]: 0/3065 cut-off events. [2020-02-10 23:40:16,644 INFO L130 PetriNetUnfolder]: For 1036788/1036847 co-relation queries the response was YES. [2020-02-10 23:40:16,644 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:40:16,644 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:40:16,644 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:40:16,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:40:16,645 INFO L82 PathProgramCache]: Analyzing trace with hash -422640544, now seen corresponding path program 54 times [2020-02-10 23:40:16,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:40:16,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683372981] [2020-02-10 23:40:16,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:40:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:40:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:40:16,869 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683372981] [2020-02-10 23:40:16,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:40:16,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:40:16,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716772792] [2020-02-10 23:40:16,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:40:16,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:40:16,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:40:16,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:40:16,870 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:40:16,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 469 transitions. Second operand 8 states. [2020-02-10 23:40:16,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:40:16,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:40:16,871 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:40:36,499 INFO L129 PetriNetUnfolder]: 45/3540 cut-off events. [2020-02-10 23:40:36,499 INFO L130 PetriNetUnfolder]: For 1093465/1095131 co-relation queries the response was YES. [2020-02-10 23:40:36,617 INFO L76 FinitePrefix]: Finished finitePrefix Result has 59386 conditions, 3540 events. 45/3540 cut-off events. For 1093465/1095131 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 55966 event pairs. 4/3486 useless extension candidates. Maximal degree in co-relation 59101. Up to 732 conditions per place. [2020-02-10 23:40:36,789 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 335 selfloop transitions, 159 changer transitions 1/507 dead transitions. [2020-02-10 23:40:36,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:40:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:40:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:40:36,790 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:40:36,790 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:40:36,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:40:36,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:40:36,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:40:36,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:40:36,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:40:36,792 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:40:36,792 INFO L178 Difference]: Start difference. First operand has 593 places, 469 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:40:36,804 INFO L206 Difference]: Finished difference. Result has 604 places, 471 transitions [2020-02-10 23:40:36,804 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=29574, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30053, PETRI_PLACES=604, PETRI_TRANSITIONS=471} [2020-02-10 23:40:36,804 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 604 places, 471 transitions [2020-02-10 23:40:48,661 INFO L129 PetriNetUnfolder]: 0/3438 cut-off events. [2020-02-10 23:40:48,661 INFO L130 PetriNetUnfolder]: For 1074231/1074286 co-relation queries the response was YES. [2020-02-10 23:40:48,770 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57498 conditions, 3438 events. 0/3438 cut-off events. For 1074231/1074286 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 55257 event pairs. 1/3311 useless extension candidates. Maximal degree in co-relation 57209. Up to 387 conditions per place. [2020-02-10 23:40:48,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 604 places, 471 transitions [2020-02-10 23:40:48,920 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 603 places, 471 transitions [2020-02-10 23:40:48,920 INFO L479 AbstractCegarLoop]: Abstraction has has 603 places, 471 transitions [2020-02-10 23:40:48,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:40:53,141 INFO L129 PetriNetUnfolder]: 0/3073 cut-off events. [2020-02-10 23:40:53,141 INFO L130 PetriNetUnfolder]: For 1074717/1074760 co-relation queries the response was YES. [2020-02-10 23:40:53,141 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:40:53,141 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:40:53,141 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:40:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:40:53,141 INFO L82 PathProgramCache]: Analyzing trace with hash 201379586, now seen corresponding path program 55 times [2020-02-10 23:40:53,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:40:53,142 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528443011] [2020-02-10 23:40:53,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:40:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:40:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:40:53,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528443011] [2020-02-10 23:40:53,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:40:53,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:40:53,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070273812] [2020-02-10 23:40:53,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:40:53,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:40:53,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:40:53,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:40:53,363 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:40:53,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 471 transitions. Second operand 8 states. [2020-02-10 23:40:53,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:40:53,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:40:53,363 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:41:13,773 INFO L129 PetriNetUnfolder]: 45/3536 cut-off events. [2020-02-10 23:41:13,773 INFO L130 PetriNetUnfolder]: For 1126782/1128448 co-relation queries the response was YES. [2020-02-10 23:41:13,896 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60153 conditions, 3536 events. 45/3536 cut-off events. For 1126782/1128448 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 55954 event pairs. 14/3492 useless extension candidates. Maximal degree in co-relation 59863. Up to 679 conditions per place. [2020-02-10 23:41:14,071 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 316 selfloop transitions, 154 changer transitions 2/484 dead transitions. [2020-02-10 23:41:14,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:41:14,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:41:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:41:14,072 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:41:14,072 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:41:14,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:41:14,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:41:14,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:41:14,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:41:14,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:41:14,073 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:41:14,074 INFO L178 Difference]: Start difference. First operand has 603 places, 471 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:41:14,081 INFO L206 Difference]: Finished difference. Result has 614 places, 474 transitions [2020-02-10 23:41:14,082 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=30053, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30514, PETRI_PLACES=614, PETRI_TRANSITIONS=474} [2020-02-10 23:41:14,082 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 614 places, 474 transitions [2020-02-10 23:41:25,488 INFO L129 PetriNetUnfolder]: 0/3429 cut-off events. [2020-02-10 23:41:25,488 INFO L130 PetriNetUnfolder]: For 1107445/1107490 co-relation queries the response was YES. [2020-02-10 23:41:25,608 INFO L76 FinitePrefix]: Finished finitePrefix Result has 58196 conditions, 3429 events. 0/3429 cut-off events. For 1107445/1107490 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 54957 event pairs. 1/3306 useless extension candidates. Maximal degree in co-relation 57902. Up to 386 conditions per place. [2020-02-10 23:41:25,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 614 places, 474 transitions [2020-02-10 23:41:25,769 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 613 places, 474 transitions [2020-02-10 23:41:25,769 INFO L479 AbstractCegarLoop]: Abstraction has has 613 places, 474 transitions [2020-02-10 23:41:25,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:41:30,049 INFO L129 PetriNetUnfolder]: 0/3065 cut-off events. [2020-02-10 23:41:30,049 INFO L130 PetriNetUnfolder]: For 1108256/1108315 co-relation queries the response was YES. [2020-02-10 23:41:30,049 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:41:30,049 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:41:30,049 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:41:30,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:41:30,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1372629692, now seen corresponding path program 56 times [2020-02-10 23:41:30,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:41:30,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376505443] [2020-02-10 23:41:30,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:41:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:41:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:41:30,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376505443] [2020-02-10 23:41:30,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:41:30,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:41:30,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666789932] [2020-02-10 23:41:30,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:41:30,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:41:30,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:41:30,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:41:30,271 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:41:30,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 474 transitions. Second operand 8 states. [2020-02-10 23:41:30,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:41:30,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:41:30,272 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:41:51,261 INFO L129 PetriNetUnfolder]: 45/3527 cut-off events. [2020-02-10 23:41:51,262 INFO L130 PetriNetUnfolder]: For 1159488/1160492 co-relation queries the response was YES. [2020-02-10 23:41:51,383 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60862 conditions, 3527 events. 45/3527 cut-off events. For 1159488/1160492 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 55766 event pairs. 1/3472 useless extension candidates. Maximal degree in co-relation 60567. Up to 857 conditions per place. [2020-02-10 23:41:51,557 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 341 selfloop transitions, 131 changer transitions 0/484 dead transitions. [2020-02-10 23:41:51,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:41:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:41:51,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:41:51,558 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:41:51,558 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:41:51,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:41:51,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:41:51,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:41:51,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:41:51,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:41:51,559 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:41:51,559 INFO L178 Difference]: Start difference. First operand has 613 places, 474 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:41:51,569 INFO L206 Difference]: Finished difference. Result has 621 places, 474 transitions [2020-02-10 23:41:51,570 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=30514, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30779, PETRI_PLACES=621, PETRI_TRANSITIONS=474} [2020-02-10 23:41:51,570 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 621 places, 474 transitions [2020-02-10 23:42:04,326 INFO L129 PetriNetUnfolder]: 0/3428 cut-off events. [2020-02-10 23:42:04,326 INFO L130 PetriNetUnfolder]: For 1137978/1138037 co-relation queries the response was YES. [2020-02-10 23:42:04,446 INFO L76 FinitePrefix]: Finished finitePrefix Result has 58856 conditions, 3428 events. 0/3428 cut-off events. For 1137978/1138037 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 54932 event pairs. 3/3306 useless extension candidates. Maximal degree in co-relation 58560. Up to 386 conditions per place. [2020-02-10 23:42:04,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 621 places, 474 transitions [2020-02-10 23:42:04,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 621 places, 474 transitions [2020-02-10 23:42:04,608 INFO L479 AbstractCegarLoop]: Abstraction has has 621 places, 474 transitions [2020-02-10 23:42:04,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-02-10 23:42:09,122 INFO L129 PetriNetUnfolder]: 0/3065 cut-off events. [2020-02-10 23:42:09,122 INFO L130 PetriNetUnfolder]: For 1137167/1137212 co-relation queries the response was YES. [2020-02-10 23:42:09,122 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:42:09,122 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:42:09,122 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:42:09,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:42:09,122 INFO L82 PathProgramCache]: Analyzing trace with hash -323970756, now seen corresponding path program 57 times [2020-02-10 23:42:09,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:42:09,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265841757] [2020-02-10 23:42:09,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:42:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:42:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:42:09,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265841757] [2020-02-10 23:42:09,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:42:09,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-02-10 23:42:09,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984826257] [2020-02-10 23:42:09,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-02-10 23:42:09,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:42:09,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-02-10 23:42:09,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-02-10 23:42:09,340 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 69 [2020-02-10 23:42:09,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 474 transitions. Second operand 8 states. [2020-02-10 23:42:09,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:42:09,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 69 [2020-02-10 23:42:09,340 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:42:30,016 INFO L129 PetriNetUnfolder]: 45/3526 cut-off events. [2020-02-10 23:42:30,016 INFO L130 PetriNetUnfolder]: For 1190084/1191088 co-relation queries the response was YES. [2020-02-10 23:42:30,143 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61533 conditions, 3526 events. 45/3526 cut-off events. For 1190084/1191088 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 55698 event pairs. 1/3468 useless extension candidates. Maximal degree in co-relation 61236. Up to 679 conditions per place. [2020-02-10 23:42:30,327 INFO L145 encePairwiseOnDemand]: 62/69 looper letters, 312 selfloop transitions, 175 changer transitions 0/499 dead transitions. [2020-02-10 23:42:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-02-10 23:42:30,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-02-10 23:42:30,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-02-10 23:42:30,329 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2020-02-10 23:42:30,329 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-02-10 23:42:30,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-02-10 23:42:30,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:42:30,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-02-10 23:42:30,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-02-10 23:42:30,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-02-10 23:42:30,330 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-02-10 23:42:30,330 INFO L178 Difference]: Start difference. First operand has 621 places, 474 transitions. Second operand 8 states and 467 transitions. [2020-02-10 23:42:30,338 INFO L206 Difference]: Finished difference. Result has 632 places, 487 transitions [2020-02-10 23:42:30,339 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=30779, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=32345, PETRI_PLACES=632, PETRI_TRANSITIONS=487} [2020-02-10 23:42:30,339 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 632 places, 487 transitions Received shutdown request... [2020-02-10 23:42:39,509 WARN L544 AbstractCegarLoop]: Verification canceled [2020-02-10 23:42:39,513 WARN L227 ceAbstractionStarter]: Timeout [2020-02-10 23:42:39,513 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:42:39 BasicIcfg [2020-02-10 23:42:39,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 23:42:39,515 INFO L168 Benchmark]: Toolchain (without parser) took 840863.11 ms. Allocated memory was 144.2 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 119.3 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2020-02-10 23:42:39,515 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.46 ms. Allocated memory is still 144.2 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-10 23:42:39,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.70 ms. Allocated memory is still 144.2 MB. Free memory was 119.1 MB in the beginning and 117.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-02-10 23:42:39,516 INFO L168 Benchmark]: Boogie Preprocessor took 17.82 ms. Allocated memory is still 144.2 MB. Free memory was 117.3 MB in the beginning and 116.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-02-10 23:42:39,516 INFO L168 Benchmark]: RCFGBuilder took 321.46 ms. Allocated memory is still 144.2 MB. Free memory was 116.2 MB in the beginning and 104.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-02-10 23:42:39,517 INFO L168 Benchmark]: TraceAbstraction took 840477.98 ms. Allocated memory was 144.2 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 103.7 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2020-02-10 23:42:39,518 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 0.46 ms. Allocated memory is still 144.2 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.70 ms. Allocated memory is still 144.2 MB. Free memory was 119.1 MB in the beginning and 117.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 17.82 ms. Allocated memory is still 144.2 MB. Free memory was 117.3 MB in the beginning and 116.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 321.46 ms. Allocated memory is still 144.2 MB. Free memory was 116.2 MB in the beginning and 104.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 840477.98 ms. Allocated memory was 144.2 MB in the beginning and 3.1 GB in the end (delta: 2.9 GB). Free memory was 103.7 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.2s, 44 ProgramPointsBefore, 38 ProgramPointsAfterwards, 55 TransitionsBefore, 49 TransitionsAfterwards, 780 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 210 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 225 CheckedPairsTotal, 6 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 25). Cancelled while PetriNetUnfolder was constructing finite prefix that currently has 49216 conditions, 3248 events (0/3247 cut-off events. For 1171817/1171862 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 53187 event pairs. 1/3306 useless extension candidates. Maximal degree in co-relation 48915. Up to 386 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 840.1s, OverallIterations: 62, TraceHistogramMax: 1, AutomataDifference: 448.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 1179 SDtfs, 1194 SDslu, 920 SDs, 0 SdLazy, 2219 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 471 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 404 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=474occurred in iteration=60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 277.0s AutomataMinimizationTime, 62 MinimizatonAttempts, 40 StatesRemovedByMinimization, 61 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 1178 NumberOfCodeBlocks, 1178 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 1116 ConstructedInterpolants, 0 QuantifiedInterpolants, 358038 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 62 InterpolantComputations, 62 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown