/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 19:06:18,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 19:06:18,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 19:06:18,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-11 19:06:18,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 19:06:18,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 19:06:18,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 19:06:18,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 19:06:18,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 19:06:18,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 19:06:18,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 19:06:18,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 19:06:18,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 19:06:18,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 19:06:18,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 19:06:18,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 19:06:18,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-11 19:06:18,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 19:06:18,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 19:06:18,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 19:06:18,348 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-06-11 19:06:18,388 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 19:06:18,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 19:06:18,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 19:06:18,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 19:06:18,391 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 19:06:18,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 19:06:18,391 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 19:06:18,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 19:06:18,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 19:06:18,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 19:06:18,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 19:06:18,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 19:06:18,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 19:06:18,393 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 19:06:18,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 19:06:18,393 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 19:06:18,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 19:06:18,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 19:06:18,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 19:06:18,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 19:06:18,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 19:06:18,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 19:06:18,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 19:06:18,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 19:06:18,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 19:06:18,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 19:06:18,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 19:06:18,395 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-06-11 19:06:18,395 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 19:06:18,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 19:06:18,395 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 19:06:18,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 19:06:18,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 19:06:18,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 19:06:18,685 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 19:06:18,690 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 19:06:18,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl [2021-06-11 19:06:18,691 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl' [2021-06-11 19:06:18,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 19:06:18,728 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 19:06:18,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 19:06:18,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 19:06:18,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 19:06:18,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 07:06:18" (1/1) ... [2021-06-11 19:06:18,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 07:06:18" (1/1) ... [2021-06-11 19:06:18,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 19:06:18,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 19:06:18,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 19:06:18,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 19:06:18,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 07:06:18" (1/1) ... [2021-06-11 19:06:18,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 07:06:18" (1/1) ... [2021-06-11 19:06:18,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 07:06:18" (1/1) ... [2021-06-11 19:06:18,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 07:06:18" (1/1) ... [2021-06-11 19:06:18,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 07:06:18" (1/1) ... [2021-06-11 19:06:18,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 07:06:18" (1/1) ... [2021-06-11 19:06:18,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 07:06:18" (1/1) ... [2021-06-11 19:06:18,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 19:06:18,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 19:06:18,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 19:06:18,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 19:06:18,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 07:06:18" (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 [2021-06-11 19:06:18,829 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-11 19:06:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-11 19:06:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-11 19:06:18,830 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-11 19:06:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-11 19:06:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-11 19:06:18,830 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-11 19:06:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-11 19:06:18,831 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-11 19:06:18,831 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-11 19:06:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-11 19:06:18,831 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-11 19:06:18,831 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-11 19:06:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-11 19:06:18,832 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-11 19:06:18,832 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 19:06:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 19:06:18,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 19:06:18,832 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-11 19:06:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-11 19:06:18,832 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-11 19:06:18,833 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-06-11 19:06:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-06-11 19:06:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-06-11 19:06:18,833 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-06-11 19:06:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-06-11 19:06:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-06-11 19:06:18,834 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 19:06:18,962 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 19:06:18,962 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-11 19:06:18,963 INFO L202 PluginConnector]: Adding new model example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 07:06:18 BoogieIcfgContainer [2021-06-11 19:06:18,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 19:06:18,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 19:06:18,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 19:06:18,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 19:06:18,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 07:06:18" (1/2) ... [2021-06-11 19:06:18,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a99aa53 and model type example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 07:06:18, skipping insertion in model container [2021-06-11 19:06:18,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 07:06:18" (2/2) ... [2021-06-11 19:06:18,985 INFO L111 eAbstractionObserver]: Analyzing ICFG example_8.bpl [2021-06-11 19:06:18,990 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 19:06:18,993 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 19:06:18,994 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 19:06:19,145 INFO L149 ThreadInstanceAdder]: Constructed 64 joinOtherThreadTransitions. [2021-06-11 19:06:19,158 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-06-11 19:06:19,178 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 19:06:19,178 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 19:06:19,178 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 19:06:19,178 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 19:06:19,178 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 19:06:19,178 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 19:06:19,178 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 19:06:19,179 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 19:06:19,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 99 transitions, 430 flow [2021-06-11 19:06:19,411 INFO L129 PetriNetUnfolder]: 769/1051 cut-off events. [2021-06-11 19:06:19,411 INFO L130 PetriNetUnfolder]: For 1024/1024 co-relation queries the response was YES. [2021-06-11 19:06:19,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 1051 events. 769/1051 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3895 event pairs, 0 based on Foata normal form. 0/1050 useless extension candidates. Maximal degree in co-relation 933. Up to 280 conditions per place. [2021-06-11 19:06:19,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 99 transitions, 430 flow [2021-06-11 19:06:19,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 89 transitions, 394 flow [2021-06-11 19:06:19,440 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:19,458 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 89 transitions, 394 flow [2021-06-11 19:06:19,465 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 89 transitions, 394 flow [2021-06-11 19:06:19,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 89 transitions, 394 flow [2021-06-11 19:06:19,560 INFO L129 PetriNetUnfolder]: 769/1049 cut-off events. [2021-06-11 19:06:19,561 INFO L130 PetriNetUnfolder]: For 1024/1024 co-relation queries the response was YES. [2021-06-11 19:06:19,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 1049 events. 769/1049 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3656 event pairs, 0 based on Foata normal form. 0/1049 useless extension candidates. Maximal degree in co-relation 933. Up to 280 conditions per place. [2021-06-11 19:06:19,583 INFO L151 LiptonReduction]: Number of co-enabled transitions 1904 [2021-06-11 19:06:19,715 INFO L163 LiptonReduction]: Checked pairs total: 532 [2021-06-11 19:06:19,716 INFO L165 LiptonReduction]: Total number of compositions: 8 [2021-06-11 19:06:19,718 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 280 [2021-06-11 19:06:19,816 INFO L129 PetriNetUnfolder]: 769/1040 cut-off events. [2021-06-11 19:06:19,817 INFO L130 PetriNetUnfolder]: For 1024/1024 co-relation queries the response was YES. [2021-06-11 19:06:19,817 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:19,818 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:19,818 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:19,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:19,824 INFO L82 PathProgramCache]: Analyzing trace with hash 799209287, now seen corresponding path program 1 times [2021-06-11 19:06:19,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:19,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091888398] [2021-06-11 19:06:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:19,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:19,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:19,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:19,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:06:19,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:19,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:19,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091888398] [2021-06-11 19:06:19,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:19,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:06:19,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776719699] [2021-06-11 19:06:19,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:06:19,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:19,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:06:19,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:06:19,977 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2021-06-11 19:06:19,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 81 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:19,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:19,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2021-06-11 19:06:19,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:20,052 INFO L129 PetriNetUnfolder]: 475/683 cut-off events. [2021-06-11 19:06:20,052 INFO L130 PetriNetUnfolder]: For 987/987 co-relation queries the response was YES. [2021-06-11 19:06:20,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 683 events. 475/683 cut-off events. For 987/987 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2782 event pairs, 0 based on Foata normal form. 64/747 useless extension candidates. Maximal degree in co-relation 913. Up to 168 conditions per place. [2021-06-11 19:06:20,059 INFO L132 encePairwiseOnDemand]: 102/107 looper letters, 4 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2021-06-11 19:06:20,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 368 flow [2021-06-11 19:06:20,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:06:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:06:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2021-06-11 19:06:20,075 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2021-06-11 19:06:20,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:20,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,093 INFO L185 Difference]: Start difference. First operand has 50 places, 81 transitions, 378 flow. Second operand 3 states and 303 transitions. [2021-06-11 19:06:20,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 368 flow [2021-06-11 19:06:20,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 77 transitions, 232 flow, removed 0 selfloop flow, removed 16 redundant places. [2021-06-11 19:06:20,110 INFO L241 Difference]: Finished difference. Result has 36 places, 77 transitions, 224 flow [2021-06-11 19:06:20,112 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=36, PETRI_TRANSITIONS=77} [2021-06-11 19:06:20,113 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, -14 predicate places. [2021-06-11 19:06:20,113 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:20,114 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 77 transitions, 224 flow [2021-06-11 19:06:20,114 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 77 transitions, 224 flow [2021-06-11 19:06:20,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 77 transitions, 224 flow [2021-06-11 19:06:20,152 INFO L129 PetriNetUnfolder]: 475/683 cut-off events. [2021-06-11 19:06:20,152 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:06:20,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 683 events. 475/683 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2536 event pairs, 0 based on Foata normal form. 0/683 useless extension candidates. Maximal degree in co-relation 681. Up to 168 conditions per place. [2021-06-11 19:06:20,158 INFO L151 LiptonReduction]: Number of co-enabled transitions 840 [2021-06-11 19:06:20,171 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:20,171 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:20,171 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 58 [2021-06-11 19:06:20,174 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 77 transitions, 224 flow [2021-06-11 19:06:20,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,174 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:20,174 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:20,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 19:06:20,175 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:20,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:20,177 INFO L82 PathProgramCache]: Analyzing trace with hash 140970533, now seen corresponding path program 1 times [2021-06-11 19:06:20,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:20,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320498727] [2021-06-11 19:06:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:20,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:20,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:06:20,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:20,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320498727] [2021-06-11 19:06:20,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:20,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:06:20,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213700093] [2021-06-11 19:06:20,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:06:20,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:20,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:06:20,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:06:20,242 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2021-06-11 19:06:20,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 77 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:20,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2021-06-11 19:06:20,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:20,286 INFO L129 PetriNetUnfolder]: 214/345 cut-off events. [2021-06-11 19:06:20,286 INFO L130 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2021-06-11 19:06:20,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 345 events. 214/345 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1285 event pairs, 0 based on Foata normal form. 57/402 useless extension candidates. Maximal degree in co-relation 373. Up to 63 conditions per place. [2021-06-11 19:06:20,289 INFO L132 encePairwiseOnDemand]: 101/107 looper letters, 3 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2021-06-11 19:06:20,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 72 transitions, 217 flow [2021-06-11 19:06:20,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:06:20,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:06:20,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2021-06-11 19:06:20,291 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2021-06-11 19:06:20,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:20,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,295 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,295 INFO L185 Difference]: Start difference. First operand has 36 places, 77 transitions, 224 flow. Second operand 3 states and 303 transitions. [2021-06-11 19:06:20,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 72 transitions, 217 flow [2021-06-11 19:06:20,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 72 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:06:20,300 INFO L241 Difference]: Finished difference. Result has 37 places, 72 transitions, 210 flow [2021-06-11 19:06:20,300 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=37, PETRI_TRANSITIONS=72} [2021-06-11 19:06:20,300 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, -13 predicate places. [2021-06-11 19:06:20,300 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:20,301 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 72 transitions, 210 flow [2021-06-11 19:06:20,301 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 72 transitions, 210 flow [2021-06-11 19:06:20,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 72 transitions, 210 flow [2021-06-11 19:06:20,318 INFO L129 PetriNetUnfolder]: 214/345 cut-off events. [2021-06-11 19:06:20,319 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:06:20,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 345 events. 214/345 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1210 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 344. Up to 63 conditions per place. [2021-06-11 19:06:20,322 INFO L151 LiptonReduction]: Number of co-enabled transitions 770 [2021-06-11 19:06:20,332 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:20,332 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:20,332 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-06-11 19:06:20,334 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 72 transitions, 210 flow [2021-06-11 19:06:20,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,335 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:20,335 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:20,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 19:06:20,335 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:20,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:20,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1458043723, now seen corresponding path program 1 times [2021-06-11 19:06:20,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:20,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416996415] [2021-06-11 19:06:20,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:20,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:20,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:06:20,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:20,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416996415] [2021-06-11 19:06:20,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:20,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:06:20,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762223103] [2021-06-11 19:06:20,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:06:20,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:20,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:06:20,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:06:20,385 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2021-06-11 19:06:20,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 72 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:20,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2021-06-11 19:06:20,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:20,420 INFO L129 PetriNetUnfolder]: 209/339 cut-off events. [2021-06-11 19:06:20,420 INFO L130 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2021-06-11 19:06:20,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 339 events. 209/339 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1280 event pairs, 0 based on Foata normal form. 1/340 useless extension candidates. Maximal degree in co-relation 382. Up to 63 conditions per place. [2021-06-11 19:06:20,422 INFO L132 encePairwiseOnDemand]: 105/107 looper letters, 7 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2021-06-11 19:06:20,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 71 transitions, 223 flow [2021-06-11 19:06:20,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:06:20,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:06:20,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2021-06-11 19:06:20,424 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2021-06-11 19:06:20,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:20,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,426 INFO L185 Difference]: Start difference. First operand has 37 places, 72 transitions, 210 flow. Second operand 3 states and 303 transitions. [2021-06-11 19:06:20,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 71 transitions, 223 flow [2021-06-11 19:06:20,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 71 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:06:20,429 INFO L241 Difference]: Finished difference. Result has 38 places, 71 transitions, 208 flow [2021-06-11 19:06:20,429 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=38, PETRI_TRANSITIONS=71} [2021-06-11 19:06:20,429 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, -12 predicate places. [2021-06-11 19:06:20,429 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:20,430 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 71 transitions, 208 flow [2021-06-11 19:06:20,430 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 71 transitions, 208 flow [2021-06-11 19:06:20,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 71 transitions, 208 flow [2021-06-11 19:06:20,448 INFO L129 PetriNetUnfolder]: 209/339 cut-off events. [2021-06-11 19:06:20,448 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:06:20,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 339 events. 209/339 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1176 event pairs, 0 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 345. Up to 63 conditions per place. [2021-06-11 19:06:20,451 INFO L151 LiptonReduction]: Number of co-enabled transitions 756 [2021-06-11 19:06:20,459 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:20,459 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:20,459 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-06-11 19:06:20,460 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 71 transitions, 208 flow [2021-06-11 19:06:20,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,461 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:20,461 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:20,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 19:06:20,461 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:20,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:20,462 INFO L82 PathProgramCache]: Analyzing trace with hash 779424171, now seen corresponding path program 1 times [2021-06-11 19:06:20,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:20,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21510914] [2021-06-11 19:06:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:20,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:20,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:06:20,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:20,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21510914] [2021-06-11 19:06:20,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:20,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:06:20,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448450990] [2021-06-11 19:06:20,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:06:20,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:20,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:06:20,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:06:20,510 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2021-06-11 19:06:20,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 71 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:20,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2021-06-11 19:06:20,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:20,565 INFO L129 PetriNetUnfolder]: 185/309 cut-off events. [2021-06-11 19:06:20,565 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2021-06-11 19:06:20,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 309 events. 185/309 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1139 event pairs, 0 based on Foata normal form. 5/314 useless extension candidates. Maximal degree in co-relation 355. Up to 63 conditions per place. [2021-06-11 19:06:20,567 INFO L132 encePairwiseOnDemand]: 104/107 looper letters, 6 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2021-06-11 19:06:20,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 69 transitions, 216 flow [2021-06-11 19:06:20,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:06:20,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:06:20,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2021-06-11 19:06:20,569 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2021-06-11 19:06:20,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:20,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,571 INFO L185 Difference]: Start difference. First operand has 38 places, 71 transitions, 208 flow. Second operand 3 states and 303 transitions. [2021-06-11 19:06:20,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 69 transitions, 216 flow [2021-06-11 19:06:20,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 69 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:06:20,573 INFO L241 Difference]: Finished difference. Result has 39 places, 69 transitions, 203 flow [2021-06-11 19:06:20,573 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=39, PETRI_TRANSITIONS=69} [2021-06-11 19:06:20,573 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, -11 predicate places. [2021-06-11 19:06:20,573 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:20,573 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 69 transitions, 203 flow [2021-06-11 19:06:20,574 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 69 transitions, 203 flow [2021-06-11 19:06:20,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 69 transitions, 203 flow [2021-06-11 19:06:20,586 INFO L129 PetriNetUnfolder]: 185/309 cut-off events. [2021-06-11 19:06:20,586 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:06:20,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 309 events. 185/309 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1066 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 316. Up to 63 conditions per place. [2021-06-11 19:06:20,589 INFO L151 LiptonReduction]: Number of co-enabled transitions 728 [2021-06-11 19:06:20,596 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:20,596 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:20,596 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 23 [2021-06-11 19:06:20,597 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 69 transitions, 203 flow [2021-06-11 19:06:20,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,597 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:20,597 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:20,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 19:06:20,597 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:20,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:20,598 INFO L82 PathProgramCache]: Analyzing trace with hash 394116671, now seen corresponding path program 1 times [2021-06-11 19:06:20,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:20,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653785331] [2021-06-11 19:06:20,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:20,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:20,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:06:20,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:20,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653785331] [2021-06-11 19:06:20,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:20,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:06:20,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133966963] [2021-06-11 19:06:20,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:06:20,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:20,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:06:20,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:06:20,617 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2021-06-11 19:06:20,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 69 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:20,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2021-06-11 19:06:20,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:20,631 INFO L129 PetriNetUnfolder]: 48/111 cut-off events. [2021-06-11 19:06:20,631 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2021-06-11 19:06:20,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 111 events. 48/111 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 316 event pairs, 0 based on Foata normal form. 31/142 useless extension candidates. Maximal degree in co-relation 127. Up to 20 conditions per place. [2021-06-11 19:06:20,632 INFO L132 encePairwiseOnDemand]: 100/107 looper letters, 2 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2021-06-11 19:06:20,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 63 transitions, 191 flow [2021-06-11 19:06:20,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:06:20,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:06:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2021-06-11 19:06:20,633 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2021-06-11 19:06:20,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:20,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,636 INFO L185 Difference]: Start difference. First operand has 39 places, 69 transitions, 203 flow. Second operand 3 states and 303 transitions. [2021-06-11 19:06:20,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 63 transitions, 191 flow [2021-06-11 19:06:20,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 63 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:06:20,637 INFO L241 Difference]: Finished difference. Result has 40 places, 63 transitions, 186 flow [2021-06-11 19:06:20,637 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=40, PETRI_TRANSITIONS=63} [2021-06-11 19:06:20,638 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, -10 predicate places. [2021-06-11 19:06:20,638 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:20,638 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 63 transitions, 186 flow [2021-06-11 19:06:20,638 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 63 transitions, 186 flow [2021-06-11 19:06:20,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 63 transitions, 186 flow [2021-06-11 19:06:20,644 INFO L129 PetriNetUnfolder]: 48/111 cut-off events. [2021-06-11 19:06:20,644 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:06:20,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 111 events. 48/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 284 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 119. Up to 20 conditions per place. [2021-06-11 19:06:20,645 INFO L151 LiptonReduction]: Number of co-enabled transitions 460 [2021-06-11 19:06:20,651 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:20,651 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:20,651 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-06-11 19:06:20,652 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 63 transitions, 186 flow [2021-06-11 19:06:20,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,652 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:20,652 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:20,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 19:06:20,652 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:20,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:20,653 INFO L82 PathProgramCache]: Analyzing trace with hash -2118826737, now seen corresponding path program 1 times [2021-06-11 19:06:20,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:20,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440313728] [2021-06-11 19:06:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:20,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:20,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:06:20,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:20,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440313728] [2021-06-11 19:06:20,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:20,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:06:20,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329179475] [2021-06-11 19:06:20,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:06:20,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:20,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:06:20,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:06:20,703 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2021-06-11 19:06:20,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 63 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:20,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2021-06-11 19:06:20,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:20,720 INFO L129 PetriNetUnfolder]: 6/37 cut-off events. [2021-06-11 19:06:20,720 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-06-11 19:06:20,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 37 events. 6/37 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 13/50 useless extension candidates. Maximal degree in co-relation 47. Up to 6 conditions per place. [2021-06-11 19:06:20,721 INFO L132 encePairwiseOnDemand]: 99/107 looper letters, 1 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2021-06-11 19:06:20,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 103 flow [2021-06-11 19:06:20,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:06:20,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:06:20,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2021-06-11 19:06:20,722 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2021-06-11 19:06:20,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:20,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2021-06-11 19:06:20,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,724 INFO L185 Difference]: Start difference. First operand has 40 places, 63 transitions, 186 flow. Second operand 3 states and 303 transitions. [2021-06-11 19:06:20,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 103 flow [2021-06-11 19:06:20,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:06:20,727 INFO L241 Difference]: Finished difference. Result has 41 places, 34 transitions, 100 flow [2021-06-11 19:06:20,727 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2021-06-11 19:06:20,727 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, -9 predicate places. [2021-06-11 19:06:20,727 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:20,727 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 34 transitions, 100 flow [2021-06-11 19:06:20,727 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 34 transitions, 100 flow [2021-06-11 19:06:20,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 34 transitions, 100 flow [2021-06-11 19:06:20,732 INFO L129 PetriNetUnfolder]: 6/37 cut-off events. [2021-06-11 19:06:20,732 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:06:20,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 37 events. 6/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 46. Up to 6 conditions per place. [2021-06-11 19:06:20,732 INFO L151 LiptonReduction]: Number of co-enabled transitions 266 [2021-06-11 19:06:20,734 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:20,735 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:20,735 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-06-11 19:06:20,737 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 100 flow [2021-06-11 19:06:20,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:20,737 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:20,738 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:20,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 19:06:20,738 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:20,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:20,738 INFO L82 PathProgramCache]: Analyzing trace with hash 485427359, now seen corresponding path program 1 times [2021-06-11 19:06:20,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:20,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820823106] [2021-06-11 19:06:20,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:20,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:20,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:06:20,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:20,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:06:20,838 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 19:06:20,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 19:06:20,878 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-11 19:06:20,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-11 19:06:20,926 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 19:06:20,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 19:06:20,988 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 19:06:20,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 19:06:21,025 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 19:06:21,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 19:06:21,067 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:06:21,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:06:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:21,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820823106] [2021-06-11 19:06:21,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:21,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:06:21,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768691663] [2021-06-11 19:06:21,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:06:21,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:21,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:06:21,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:06:21,108 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:06:21,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 100 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:21,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:21,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:06:21,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:21,364 INFO L129 PetriNetUnfolder]: 1122/1869 cut-off events. [2021-06-11 19:06:21,364 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 19:06:21,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3238 conditions, 1869 events. 1122/1869 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10591 event pairs, 321 based on Foata normal form. 1/1762 useless extension candidates. Maximal degree in co-relation 3230. Up to 513 conditions per place. [2021-06-11 19:06:21,378 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 35 selfloop transitions, 8 changer transitions 0/68 dead transitions. [2021-06-11 19:06:21,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 68 transitions, 254 flow [2021-06-11 19:06:21,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:06:21,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:06:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:06:21,381 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:06:21,381 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:06:21,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:06:21,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:21,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:06:21,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:21,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:21,386 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:21,386 INFO L185 Difference]: Start difference. First operand has 41 places, 34 transitions, 100 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:06:21,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 68 transitions, 254 flow [2021-06-11 19:06:21,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 68 transitions, 253 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:06:21,390 INFO L241 Difference]: Finished difference. Result has 57 places, 41 transitions, 160 flow [2021-06-11 19:06:21,390 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=160, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2021-06-11 19:06:21,390 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2021-06-11 19:06:21,390 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:21,390 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 41 transitions, 160 flow [2021-06-11 19:06:21,390 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 41 transitions, 160 flow [2021-06-11 19:06:21,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 41 transitions, 160 flow [2021-06-11 19:06:21,399 INFO L129 PetriNetUnfolder]: 33/148 cut-off events. [2021-06-11 19:06:21,399 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-06-11 19:06:21,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 148 events. 33/148 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 688 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 199. Up to 32 conditions per place. [2021-06-11 19:06:21,401 INFO L151 LiptonReduction]: Number of co-enabled transitions 416 [2021-06-11 19:06:21,404 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:21,404 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:21,404 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-06-11 19:06:21,407 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 160 flow [2021-06-11 19:06:21,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:21,408 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:21,408 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:21,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-11 19:06:21,408 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:21,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:21,409 INFO L82 PathProgramCache]: Analyzing trace with hash -800180707, now seen corresponding path program 2 times [2021-06-11 19:06:21,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:21,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881357967] [2021-06-11 19:06:21,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:21,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:21,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:21,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:21,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:06:21,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:21,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:06:21,502 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 19:06:21,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 19:06:21,517 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 19:06:21,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 19:06:21,540 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 19:06:21,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 19:06:21,565 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 19:06:21,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 19:06:21,605 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 19:06:21,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 19:06:21,649 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:06:21,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:06:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:21,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881357967] [2021-06-11 19:06:21,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:21,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:06:21,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442033402] [2021-06-11 19:06:21,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:06:21,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:21,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:06:21,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:06:21,694 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:06:21,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 160 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:21,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:21,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:06:21,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:22,074 INFO L129 PetriNetUnfolder]: 1644/3210 cut-off events. [2021-06-11 19:06:22,074 INFO L130 PetriNetUnfolder]: For 2365/2433 co-relation queries the response was YES. [2021-06-11 19:06:22,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6953 conditions, 3210 events. 1644/3210 cut-off events. For 2365/2433 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 24697 event pairs, 387 based on Foata normal form. 1/3076 useless extension candidates. Maximal degree in co-relation 6937. Up to 683 conditions per place. [2021-06-11 19:06:22,107 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 53 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2021-06-11 19:06:22,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 91 transitions, 531 flow [2021-06-11 19:06:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:06:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:06:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:06:22,110 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:06:22,110 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:06:22,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:06:22,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:22,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:06:22,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:22,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:22,115 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:22,115 INFO L185 Difference]: Start difference. First operand has 57 places, 41 transitions, 160 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:06:22,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 91 transitions, 531 flow [2021-06-11 19:06:22,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 91 transitions, 523 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 19:06:22,120 INFO L241 Difference]: Finished difference. Result has 73 places, 52 transitions, 285 flow [2021-06-11 19:06:22,120 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=285, PETRI_PLACES=73, PETRI_TRANSITIONS=52} [2021-06-11 19:06:22,120 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2021-06-11 19:06:22,121 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:22,121 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 52 transitions, 285 flow [2021-06-11 19:06:22,121 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 52 transitions, 285 flow [2021-06-11 19:06:22,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 52 transitions, 285 flow [2021-06-11 19:06:22,159 INFO L129 PetriNetUnfolder]: 112/461 cut-off events. [2021-06-11 19:06:22,159 INFO L130 PetriNetUnfolder]: For 174/183 co-relation queries the response was YES. [2021-06-11 19:06:22,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 461 events. 112/461 cut-off events. For 174/183 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3422 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 675. Up to 106 conditions per place. [2021-06-11 19:06:22,166 INFO L151 LiptonReduction]: Number of co-enabled transitions 638 [2021-06-11 19:06:22,171 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:22,171 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:22,171 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 50 [2021-06-11 19:06:22,172 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 52 transitions, 285 flow [2021-06-11 19:06:22,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:22,172 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:22,172 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:22,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-11 19:06:22,173 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:22,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:22,173 INFO L82 PathProgramCache]: Analyzing trace with hash 577942889, now seen corresponding path program 3 times [2021-06-11 19:06:22,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:22,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113473122] [2021-06-11 19:06:22,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:22,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:22,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:22,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:22,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:06:22,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:22,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:06:22,218 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 19:06:22,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 19:06:22,230 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 19:06:22,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 19:06:22,247 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 19:06:22,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 19:06:22,271 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 19:06:22,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 19:06:22,305 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 19:06:22,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 19:06:22,347 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:06:22,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:06:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:22,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113473122] [2021-06-11 19:06:22,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:22,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:06:22,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927324066] [2021-06-11 19:06:22,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:06:22,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:22,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:06:22,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:06:22,385 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:06:22,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 52 transitions, 285 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:22,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:22,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:06:22,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:22,923 INFO L129 PetriNetUnfolder]: 2188/4661 cut-off events. [2021-06-11 19:06:22,923 INFO L130 PetriNetUnfolder]: For 8638/8771 co-relation queries the response was YES. [2021-06-11 19:06:22,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12216 conditions, 4661 events. 2188/4661 cut-off events. For 8638/8771 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 41739 event pairs, 451 based on Foata normal form. 1/4461 useless extension candidates. Maximal degree in co-relation 12192. Up to 948 conditions per place. [2021-06-11 19:06:22,970 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 68 selfloop transitions, 23 changer transitions 0/116 dead transitions. [2021-06-11 19:06:22,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 116 transitions, 928 flow [2021-06-11 19:06:22,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:06:22,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:06:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:06:22,973 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:06:22,973 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:06:22,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:06:22,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:22,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:06:22,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:22,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:22,979 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:22,979 INFO L185 Difference]: Start difference. First operand has 73 places, 52 transitions, 285 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:06:22,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 116 transitions, 928 flow [2021-06-11 19:06:22,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 116 transitions, 911 flow, removed 4 selfloop flow, removed 1 redundant places. [2021-06-11 19:06:22,997 INFO L241 Difference]: Finished difference. Result has 89 places, 72 transitions, 562 flow [2021-06-11 19:06:22,997 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=562, PETRI_PLACES=89, PETRI_TRANSITIONS=72} [2021-06-11 19:06:22,997 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2021-06-11 19:06:22,997 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:22,997 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 72 transitions, 562 flow [2021-06-11 19:06:22,998 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 72 transitions, 562 flow [2021-06-11 19:06:22,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 72 transitions, 562 flow [2021-06-11 19:06:23,091 INFO L129 PetriNetUnfolder]: 264/1028 cut-off events. [2021-06-11 19:06:23,091 INFO L130 PetriNetUnfolder]: For 832/910 co-relation queries the response was YES. [2021-06-11 19:06:23,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 1028 events. 264/1028 cut-off events. For 832/910 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9407 event pairs, 0 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 1643. Up to 248 conditions per place. [2021-06-11 19:06:23,105 INFO L151 LiptonReduction]: Number of co-enabled transitions 1016 [2021-06-11 19:06:23,113 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:23,113 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:23,113 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 116 [2021-06-11 19:06:23,114 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 72 transitions, 562 flow [2021-06-11 19:06:23,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:23,115 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:23,115 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:23,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-11 19:06:23,115 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:23,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:23,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1696932537, now seen corresponding path program 4 times [2021-06-11 19:06:23,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:23,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292178775] [2021-06-11 19:06:23,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:23,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:23,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:23,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:23,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:06:23,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:23,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:06:23,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:23,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 19:06:23,167 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 19:06:23,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 19:06:23,185 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 19:06:23,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 19:06:23,214 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 19:06:23,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 19:06:23,248 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 19:06:23,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 19:06:23,286 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:06:23,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:06:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:23,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292178775] [2021-06-11 19:06:23,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:23,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:06:23,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27438332] [2021-06-11 19:06:23,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:06:23,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:23,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:06:23,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:06:23,323 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:06:23,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 72 transitions, 562 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:23,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:23,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:06:23,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:23,942 INFO L129 PetriNetUnfolder]: 2435/5318 cut-off events. [2021-06-11 19:06:23,943 INFO L130 PetriNetUnfolder]: For 17874/18398 co-relation queries the response was YES. [2021-06-11 19:06:23,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16488 conditions, 5318 events. 2435/5318 cut-off events. For 17874/18398 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 48719 event pairs, 533 based on Foata normal form. 1/5113 useless extension candidates. Maximal degree in co-relation 16456. Up to 1130 conditions per place. [2021-06-11 19:06:24,015 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 86 selfloop transitions, 29 changer transitions 0/140 dead transitions. [2021-06-11 19:06:24,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 140 transitions, 1420 flow [2021-06-11 19:06:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:06:24,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:06:24,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:06:24,017 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:06:24,017 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:06:24,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:06:24,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:24,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:06:24,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:24,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:24,022 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:24,022 INFO L185 Difference]: Start difference. First operand has 89 places, 72 transitions, 562 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:06:24,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 140 transitions, 1420 flow [2021-06-11 19:06:24,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 140 transitions, 1397 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-06-11 19:06:24,047 INFO L241 Difference]: Finished difference. Result has 105 places, 91 transitions, 879 flow [2021-06-11 19:06:24,048 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=879, PETRI_PLACES=105, PETRI_TRANSITIONS=91} [2021-06-11 19:06:24,048 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 55 predicate places. [2021-06-11 19:06:24,048 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:24,048 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 91 transitions, 879 flow [2021-06-11 19:06:24,048 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 91 transitions, 879 flow [2021-06-11 19:06:24,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 91 transitions, 879 flow [2021-06-11 19:06:24,163 INFO L129 PetriNetUnfolder]: 368/1412 cut-off events. [2021-06-11 19:06:24,163 INFO L130 PetriNetUnfolder]: For 1898/2053 co-relation queries the response was YES. [2021-06-11 19:06:24,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2527 conditions, 1412 events. 368/1412 cut-off events. For 1898/2053 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 13964 event pairs, 0 based on Foata normal form. 0/1250 useless extension candidates. Maximal degree in co-relation 2488. Up to 350 conditions per place. [2021-06-11 19:06:24,186 INFO L151 LiptonReduction]: Number of co-enabled transitions 1324 [2021-06-11 19:06:24,197 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:24,198 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:24,198 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 150 [2021-06-11 19:06:24,198 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 879 flow [2021-06-11 19:06:24,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:24,199 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:24,199 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:24,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-11 19:06:24,199 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:24,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:24,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1265189545, now seen corresponding path program 5 times [2021-06-11 19:06:24,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:24,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148031574] [2021-06-11 19:06:24,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:24,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:24,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:24,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:24,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:06:24,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:24,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:06:24,239 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 19:06:24,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 19:06:24,252 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 19:06:24,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 19:06:24,271 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 19:06:24,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 19:06:24,301 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 19:06:24,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 19:06:24,331 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 19:06:24,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 19:06:24,370 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:06:24,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:06:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:24,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148031574] [2021-06-11 19:06:24,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:24,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:06:24,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583362293] [2021-06-11 19:06:24,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:06:24,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:24,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:06:24,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:06:24,406 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:06:24,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 879 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:24,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:24,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:06:24,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:25,747 INFO L129 PetriNetUnfolder]: 4217/10029 cut-off events. [2021-06-11 19:06:25,747 INFO L130 PetriNetUnfolder]: For 40017/40880 co-relation queries the response was YES. [2021-06-11 19:06:25,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28916 conditions, 10029 events. 4217/10029 cut-off events. For 40017/40880 co-relation queries the response was YES. Maximal size of possible extension queue 1381. Compared 111689 event pairs, 611 based on Foata normal form. 2/9501 useless extension candidates. Maximal degree in co-relation 28876. Up to 2199 conditions per place. [2021-06-11 19:06:25,905 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 100 selfloop transitions, 49 changer transitions 0/174 dead transitions. [2021-06-11 19:06:25,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 174 transitions, 2145 flow [2021-06-11 19:06:25,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:06:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:06:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:06:25,908 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:06:25,908 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:06:25,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:06:25,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:25,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:06:25,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:25,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:25,913 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:25,913 INFO L185 Difference]: Start difference. First operand has 105 places, 91 transitions, 879 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:06:25,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 174 transitions, 2145 flow [2021-06-11 19:06:25,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 174 transitions, 2053 flow, removed 37 selfloop flow, removed 1 redundant places. [2021-06-11 19:06:25,975 INFO L241 Difference]: Finished difference. Result has 121 places, 124 transitions, 1471 flow [2021-06-11 19:06:25,976 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1471, PETRI_PLACES=121, PETRI_TRANSITIONS=124} [2021-06-11 19:06:25,976 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 71 predicate places. [2021-06-11 19:06:25,976 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:25,976 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 124 transitions, 1471 flow [2021-06-11 19:06:25,977 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 124 transitions, 1471 flow [2021-06-11 19:06:25,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 124 transitions, 1471 flow [2021-06-11 19:06:26,265 INFO L129 PetriNetUnfolder]: 590/2444 cut-off events. [2021-06-11 19:06:26,266 INFO L130 PetriNetUnfolder]: For 5604/5905 co-relation queries the response was YES. [2021-06-11 19:06:26,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4977 conditions, 2444 events. 590/2444 cut-off events. For 5604/5905 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 27626 event pairs, 0 based on Foata normal form. 11/2202 useless extension candidates. Maximal degree in co-relation 4930. Up to 584 conditions per place. [2021-06-11 19:06:26,308 INFO L151 LiptonReduction]: Number of co-enabled transitions 1890 [2021-06-11 19:06:26,322 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:26,322 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:26,323 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 347 [2021-06-11 19:06:26,323 INFO L480 AbstractCegarLoop]: Abstraction has has 121 places, 124 transitions, 1471 flow [2021-06-11 19:06:26,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:26,324 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:26,324 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:26,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-11 19:06:26,324 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:26,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:26,324 INFO L82 PathProgramCache]: Analyzing trace with hash 69446857, now seen corresponding path program 1 times [2021-06-11 19:06:26,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:26,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339100124] [2021-06-11 19:06:26,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:26,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:26,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:26,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:26,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 19:06:26,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:26,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:26,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:26,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339100124] [2021-06-11 19:06:26,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:26,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 19:06:26,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172310307] [2021-06-11 19:06:26,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 19:06:26,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:26,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 19:06:26,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 19:06:26,339 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2021-06-11 19:06:26,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 124 transitions, 1471 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:26,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:26,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2021-06-11 19:06:26,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:26,579 INFO L129 PetriNetUnfolder]: 0/1353 cut-off events. [2021-06-11 19:06:26,579 INFO L130 PetriNetUnfolder]: For 5869/6128 co-relation queries the response was YES. [2021-06-11 19:06:26,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3994 conditions, 1353 events. 0/1353 cut-off events. For 5869/6128 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 17377 event pairs, 0 based on Foata normal form. 214/1404 useless extension candidates. Maximal degree in co-relation 0. Up to 146 conditions per place. [2021-06-11 19:06:26,582 INFO L132 encePairwiseOnDemand]: 103/107 looper letters, 1 selfloop transitions, 1 changer transitions 5/115 dead transitions. [2021-06-11 19:06:26,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 115 transitions, 1448 flow [2021-06-11 19:06:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 19:06:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 19:06:26,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2021-06-11 19:06:26,585 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9314641744548287 [2021-06-11 19:06:26,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2021-06-11 19:06:26,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2021-06-11 19:06:26,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:26,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2021-06-11 19:06:26,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:26,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:26,588 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:26,588 INFO L185 Difference]: Start difference. First operand has 121 places, 124 transitions, 1471 flow. Second operand 3 states and 299 transitions. [2021-06-11 19:06:26,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 115 transitions, 1448 flow [2021-06-11 19:06:26,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 115 transitions, 1410 flow, removed 13 selfloop flow, removed 1 redundant places. [2021-06-11 19:06:26,626 INFO L241 Difference]: Finished difference. Result has 122 places, 110 transitions, 1360 flow [2021-06-11 19:06:26,626 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1360, PETRI_PLACES=122, PETRI_TRANSITIONS=110} [2021-06-11 19:06:26,626 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 72 predicate places. [2021-06-11 19:06:26,627 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:26,627 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 110 transitions, 1360 flow [2021-06-11 19:06:26,627 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 110 transitions, 1360 flow [2021-06-11 19:06:26,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 110 transitions, 1360 flow [2021-06-11 19:06:26,849 INFO L129 PetriNetUnfolder]: 0/1339 cut-off events. [2021-06-11 19:06:26,850 INFO L130 PetriNetUnfolder]: For 5071/5355 co-relation queries the response was YES. [2021-06-11 19:06:26,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3797 conditions, 1339 events. 0/1339 cut-off events. For 5071/5355 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 17289 event pairs, 0 based on Foata normal form. 11/1210 useless extension candidates. Maximal degree in co-relation 0. Up to 143 conditions per place. [2021-06-11 19:06:26,861 INFO L151 LiptonReduction]: Number of co-enabled transitions 910 [2021-06-11 19:06:26,867 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:26,868 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:26,868 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 241 [2021-06-11 19:06:26,869 INFO L480 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 1360 flow [2021-06-11 19:06:26,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:26,869 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:26,869 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:26,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-11 19:06:26,869 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:26,869 INFO L82 PathProgramCache]: Analyzing trace with hash 49113155, now seen corresponding path program 6 times [2021-06-11 19:06:26,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:26,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965488250] [2021-06-11 19:06:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:26,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:26,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:26,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:26,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:06:26,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:26,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:06:26,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:26,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 19:06:26,933 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-11 19:06:26,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-11 19:06:26,962 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-06-11 19:06:26,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 19:06:27,005 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-06-11 19:06:27,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 19:06:27,057 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 19:06:27,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 19:06:27,101 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:06:27,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:06:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:27,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965488250] [2021-06-11 19:06:27,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:27,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:06:27,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602945289] [2021-06-11 19:06:27,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:06:27,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:27,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:06:27,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:06:27,140 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:06:27,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 1360 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:27,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:27,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:06:27,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:28,254 INFO L129 PetriNetUnfolder]: 2482/7195 cut-off events. [2021-06-11 19:06:28,255 INFO L130 PetriNetUnfolder]: For 72601/74367 co-relation queries the response was YES. [2021-06-11 19:06:28,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37059 conditions, 7195 events. 2482/7195 cut-off events. For 72601/74367 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 81593 event pairs, 1050 based on Foata normal form. 2/7015 useless extension candidates. Maximal degree in co-relation 37011. Up to 2531 conditions per place. [2021-06-11 19:06:28,334 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 144 selfloop transitions, 44 changer transitions 1/205 dead transitions. [2021-06-11 19:06:28,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 205 transitions, 2986 flow [2021-06-11 19:06:28,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:06:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:06:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:06:28,337 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:06:28,337 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:06:28,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:06:28,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:28,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:06:28,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:28,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:28,342 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:28,342 INFO L185 Difference]: Start difference. First operand has 117 places, 110 transitions, 1360 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:06:28,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 205 transitions, 2986 flow [2021-06-11 19:06:28,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 205 transitions, 2915 flow, removed 35 selfloop flow, removed 6 redundant places. [2021-06-11 19:06:28,517 INFO L241 Difference]: Finished difference. Result has 128 places, 125 transitions, 1725 flow [2021-06-11 19:06:28,518 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1725, PETRI_PLACES=128, PETRI_TRANSITIONS=125} [2021-06-11 19:06:28,518 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 78 predicate places. [2021-06-11 19:06:28,518 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:28,518 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 125 transitions, 1725 flow [2021-06-11 19:06:28,518 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 125 transitions, 1725 flow [2021-06-11 19:06:28,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 125 transitions, 1725 flow [2021-06-11 19:06:28,808 INFO L129 PetriNetUnfolder]: 0/2243 cut-off events. [2021-06-11 19:06:28,808 INFO L130 PetriNetUnfolder]: For 9957/10336 co-relation queries the response was YES. [2021-06-11 19:06:28,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6114 conditions, 2243 events. 0/2243 cut-off events. For 9957/10336 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 32096 event pairs, 0 based on Foata normal form. 17/2042 useless extension candidates. Maximal degree in co-relation 0. Up to 230 conditions per place. [2021-06-11 19:06:28,828 INFO L151 LiptonReduction]: Number of co-enabled transitions 1044 [2021-06-11 19:06:28,835 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:28,835 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:28,836 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 318 [2021-06-11 19:06:28,836 INFO L480 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 1725 flow [2021-06-11 19:06:28,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:28,837 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:28,837 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:28,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-11 19:06:28,837 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:28,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:28,837 INFO L82 PathProgramCache]: Analyzing trace with hash -79794005, now seen corresponding path program 7 times [2021-06-11 19:06:28,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:28,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632875355] [2021-06-11 19:06:28,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:28,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:28,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:28,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:28,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:06:28,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:28,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:06:28,879 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 19:06:28,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 19:06:28,903 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 19:06:28,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 19:06:28,929 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 19:06:28,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 19:06:28,954 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 19:06:28,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 19:06:28,982 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 19:06:28,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 19:06:29,031 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:06:29,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:06:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:29,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632875355] [2021-06-11 19:06:29,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:29,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:06:29,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093548901] [2021-06-11 19:06:29,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:06:29,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:29,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:06:29,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:06:29,065 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:06:29,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 125 transitions, 1725 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:29,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:29,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:06:29,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:30,724 INFO L129 PetriNetUnfolder]: 3009/11033 cut-off events. [2021-06-11 19:06:30,725 INFO L130 PetriNetUnfolder]: For 127965/133062 co-relation queries the response was YES. [2021-06-11 19:06:30,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55289 conditions, 11033 events. 3009/11033 cut-off events. For 127965/133062 co-relation queries the response was YES. Maximal size of possible extension queue 1280. Compared 150182 event pairs, 883 based on Foata normal form. 7/10726 useless extension candidates. Maximal degree in co-relation 55238. Up to 2689 conditions per place. [2021-06-11 19:06:30,835 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 141 selfloop transitions, 85 changer transitions 1/243 dead transitions. [2021-06-11 19:06:30,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 243 transitions, 3995 flow [2021-06-11 19:06:30,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:06:30,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:06:30,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:06:30,838 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:06:30,838 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:06:30,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:06:30,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:30,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:06:30,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:30,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:30,843 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:30,843 INFO L185 Difference]: Start difference. First operand has 127 places, 125 transitions, 1725 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:06:30,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 243 transitions, 3995 flow [2021-06-11 19:06:31,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 243 transitions, 3823 flow, removed 54 selfloop flow, removed 2 redundant places. [2021-06-11 19:06:31,203 INFO L241 Difference]: Finished difference. Result has 142 places, 169 transitions, 2755 flow [2021-06-11 19:06:31,204 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2755, PETRI_PLACES=142, PETRI_TRANSITIONS=169} [2021-06-11 19:06:31,204 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 92 predicate places. [2021-06-11 19:06:31,204 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:31,204 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 169 transitions, 2755 flow [2021-06-11 19:06:31,204 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 169 transitions, 2755 flow [2021-06-11 19:06:31,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 169 transitions, 2755 flow [2021-06-11 19:06:31,735 INFO L129 PetriNetUnfolder]: 0/4023 cut-off events. [2021-06-11 19:06:31,735 INFO L130 PetriNetUnfolder]: For 26142/27177 co-relation queries the response was YES. [2021-06-11 19:06:31,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12147 conditions, 4023 events. 0/4023 cut-off events. For 26142/27177 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 64711 event pairs, 0 based on Foata normal form. 38/3760 useless extension candidates. Maximal degree in co-relation 0. Up to 393 conditions per place. [2021-06-11 19:06:31,759 INFO L151 LiptonReduction]: Number of co-enabled transitions 1274 [2021-06-11 19:06:31,767 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:31,767 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:31,767 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 563 [2021-06-11 19:06:31,768 INFO L480 AbstractCegarLoop]: Abstraction has has 141 places, 169 transitions, 2755 flow [2021-06-11 19:06:31,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:31,768 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:31,768 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:31,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-11 19:06:31,768 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:31,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:31,769 INFO L82 PathProgramCache]: Analyzing trace with hash 394404565, now seen corresponding path program 8 times [2021-06-11 19:06:31,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:31,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096753020] [2021-06-11 19:06:31,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:31,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:31,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:31,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:31,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:06:31,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:31,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:06:31,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:31,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 19:06:31,815 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 19:06:31,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 19:06:31,833 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 19:06:31,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 19:06:31,857 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-11 19:06:31,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 19:06:31,913 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 19:06:31,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 19:06:31,961 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:06:31,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:06:31,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:31,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096753020] [2021-06-11 19:06:31,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:31,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:06:31,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014824983] [2021-06-11 19:06:31,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:06:31,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:31,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:06:31,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:06:31,992 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:06:31,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 169 transitions, 2755 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:31,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:31,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:06:31,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:34,490 INFO L129 PetriNetUnfolder]: 3609/15146 cut-off events. [2021-06-11 19:06:34,490 INFO L130 PetriNetUnfolder]: For 215198/219577 co-relation queries the response was YES. [2021-06-11 19:06:34,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78992 conditions, 15146 events. 3609/15146 cut-off events. For 215198/219577 co-relation queries the response was YES. Maximal size of possible extension queue 1869. Compared 228830 event pairs, 1180 based on Foata normal form. 1/14680 useless extension candidates. Maximal degree in co-relation 78934. Up to 3921 conditions per place. [2021-06-11 19:06:34,610 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 217 selfloop transitions, 96 changer transitions 2/331 dead transitions. [2021-06-11 19:06:34,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 331 transitions, 6187 flow [2021-06-11 19:06:34,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:06:34,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:06:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:06:34,614 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:06:34,614 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:06:34,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:06:34,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:34,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:06:34,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:34,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:34,619 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:34,619 INFO L185 Difference]: Start difference. First operand has 141 places, 169 transitions, 2755 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:06:34,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 331 transitions, 6187 flow [2021-06-11 19:06:35,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 331 transitions, 6077 flow, removed 42 selfloop flow, removed 2 redundant places. [2021-06-11 19:06:35,256 INFO L241 Difference]: Finished difference. Result has 156 places, 211 transitions, 3900 flow [2021-06-11 19:06:35,256 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2693, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3900, PETRI_PLACES=156, PETRI_TRANSITIONS=211} [2021-06-11 19:06:35,256 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 106 predicate places. [2021-06-11 19:06:35,256 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:35,256 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 211 transitions, 3900 flow [2021-06-11 19:06:35,257 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 211 transitions, 3900 flow [2021-06-11 19:06:35,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 155 places, 211 transitions, 3900 flow [2021-06-11 19:06:36,195 INFO L129 PetriNetUnfolder]: 0/6076 cut-off events. [2021-06-11 19:06:36,196 INFO L130 PetriNetUnfolder]: For 53300/54874 co-relation queries the response was YES. [2021-06-11 19:06:36,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20226 conditions, 6076 events. 0/6076 cut-off events. For 53300/54874 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 104701 event pairs, 0 based on Foata normal form. 22/5681 useless extension candidates. Maximal degree in co-relation 0. Up to 590 conditions per place. [2021-06-11 19:06:36,240 INFO L151 LiptonReduction]: Number of co-enabled transitions 1476 [2021-06-11 19:06:36,253 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:36,253 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:36,253 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 997 [2021-06-11 19:06:36,253 INFO L480 AbstractCegarLoop]: Abstraction has has 155 places, 211 transitions, 3900 flow [2021-06-11 19:06:36,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:36,254 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:36,254 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:36,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-11 19:06:36,254 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:36,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:36,255 INFO L82 PathProgramCache]: Analyzing trace with hash -344952837, now seen corresponding path program 9 times [2021-06-11 19:06:36,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:36,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147682734] [2021-06-11 19:06:36,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:36,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:36,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:36,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:36,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:06:36,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:36,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:06:36,308 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 19:06:36,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 19:06:36,320 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 19:06:36,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 19:06:36,338 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-11 19:06:36,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-11 19:06:36,377 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-06-11 19:06:36,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 19:06:36,426 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 19:06:36,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 19:06:36,456 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:06:36,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:06:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:36,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147682734] [2021-06-11 19:06:36,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:36,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:06:36,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89679536] [2021-06-11 19:06:36,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:06:36,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:36,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:06:36,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:06:36,490 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:06:36,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 211 transitions, 3900 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:36,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:36,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:06:36,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:39,566 INFO L129 PetriNetUnfolder]: 3603/14931 cut-off events. [2021-06-11 19:06:39,566 INFO L130 PetriNetUnfolder]: For 264869/269363 co-relation queries the response was YES. [2021-06-11 19:06:39,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85241 conditions, 14931 events. 3603/14931 cut-off events. For 264869/269363 co-relation queries the response was YES. Maximal size of possible extension queue 1815. Compared 222301 event pairs, 1292 based on Foata normal form. 5/14531 useless extension candidates. Maximal degree in co-relation 85176. Up to 4266 conditions per place. [2021-06-11 19:06:39,699 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 225 selfloop transitions, 102 changer transitions 1/344 dead transitions. [2021-06-11 19:06:39,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 344 transitions, 7065 flow [2021-06-11 19:06:39,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:06:39,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:06:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:06:39,702 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:06:39,702 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:06:39,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:06:39,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:39,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:06:39,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:39,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:39,707 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:39,707 INFO L185 Difference]: Start difference. First operand has 155 places, 211 transitions, 3900 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:06:39,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 344 transitions, 7065 flow [2021-06-11 19:06:40,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 344 transitions, 6716 flow, removed 150 selfloop flow, removed 3 redundant places. [2021-06-11 19:06:40,417 INFO L241 Difference]: Finished difference. Result has 169 places, 252 transitions, 5006 flow [2021-06-11 19:06:40,417 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=3736, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5006, PETRI_PLACES=169, PETRI_TRANSITIONS=252} [2021-06-11 19:06:40,417 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 119 predicate places. [2021-06-11 19:06:40,417 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:40,417 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 252 transitions, 5006 flow [2021-06-11 19:06:40,418 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 252 transitions, 5006 flow [2021-06-11 19:06:40,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 168 places, 252 transitions, 5006 flow [2021-06-11 19:06:41,331 INFO L129 PetriNetUnfolder]: 0/6185 cut-off events. [2021-06-11 19:06:41,331 INFO L130 PetriNetUnfolder]: For 60035/62290 co-relation queries the response was YES. [2021-06-11 19:06:41,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20994 conditions, 6185 events. 0/6185 cut-off events. For 60035/62290 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 106966 event pairs, 0 based on Foata normal form. 29/5790 useless extension candidates. Maximal degree in co-relation 0. Up to 604 conditions per place. [2021-06-11 19:06:41,400 INFO L151 LiptonReduction]: Number of co-enabled transitions 1650 [2021-06-11 19:06:41,416 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:41,417 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:41,417 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1000 [2021-06-11 19:06:41,417 INFO L480 AbstractCegarLoop]: Abstraction has has 168 places, 252 transitions, 5006 flow [2021-06-11 19:06:41,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:41,418 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:41,418 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:41,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-11 19:06:41,418 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:41,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:41,418 INFO L82 PathProgramCache]: Analyzing trace with hash -902040587, now seen corresponding path program 10 times [2021-06-11 19:06:41,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:41,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866744732] [2021-06-11 19:06:41,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:41,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:41,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:41,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:41,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:06:41,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:41,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:06:41,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:41,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 19:06:41,469 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-11 19:06:41,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-11 19:06:41,496 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.3 percent of original size [2021-06-11 19:06:41,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 19:06:41,543 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-11 19:06:41,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 19:06:41,588 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 19:06:41,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 19:06:41,624 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:06:41,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:06:41,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:41,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866744732] [2021-06-11 19:06:41,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:41,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:06:41,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163030526] [2021-06-11 19:06:41,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:06:41,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:41,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:06:41,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:06:41,666 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:06:41,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 252 transitions, 5006 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:41,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:41,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:06:41,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:44,877 INFO L129 PetriNetUnfolder]: 3626/16548 cut-off events. [2021-06-11 19:06:44,877 INFO L130 PetriNetUnfolder]: For 335416/342545 co-relation queries the response was YES. [2021-06-11 19:06:45,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97499 conditions, 16548 events. 3626/16548 cut-off events. For 335416/342545 co-relation queries the response was YES. Maximal size of possible extension queue 2031. Compared 257424 event pairs, 1726 based on Foata normal form. 8/16072 useless extension candidates. Maximal degree in co-relation 97428. Up to 4214 conditions per place. [2021-06-11 19:06:45,087 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 267 selfloop transitions, 132 changer transitions 2/417 dead transitions. [2021-06-11 19:06:45,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 417 transitions, 8880 flow [2021-06-11 19:06:45,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:06:45,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:06:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:06:45,089 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:06:45,089 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:06:45,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:06:45,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:45,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:06:45,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:45,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:45,093 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:45,093 INFO L185 Difference]: Start difference. First operand has 168 places, 252 transitions, 5006 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:06:45,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 417 transitions, 8880 flow [2021-06-11 19:06:46,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 417 transitions, 8546 flow, removed 115 selfloop flow, removed 2 redundant places. [2021-06-11 19:06:46,165 INFO L241 Difference]: Finished difference. Result has 183 places, 286 transitions, 5922 flow [2021-06-11 19:06:46,166 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=4838, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5922, PETRI_PLACES=183, PETRI_TRANSITIONS=286} [2021-06-11 19:06:46,166 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 133 predicate places. [2021-06-11 19:06:46,166 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:46,166 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 286 transitions, 5922 flow [2021-06-11 19:06:46,166 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 286 transitions, 5922 flow [2021-06-11 19:06:46,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 182 places, 286 transitions, 5922 flow [2021-06-11 19:06:47,704 INFO L129 PetriNetUnfolder]: 0/8155 cut-off events. [2021-06-11 19:06:47,705 INFO L130 PetriNetUnfolder]: For 92373/95331 co-relation queries the response was YES. [2021-06-11 19:06:47,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28711 conditions, 8155 events. 0/8155 cut-off events. For 92373/95331 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 148280 event pairs, 0 based on Foata normal form. 113/7751 useless extension candidates. Maximal degree in co-relation 0. Up to 826 conditions per place. [2021-06-11 19:06:47,824 INFO L151 LiptonReduction]: Number of co-enabled transitions 1940 [2021-06-11 19:06:47,845 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:47,845 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:47,845 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1679 [2021-06-11 19:06:47,846 INFO L480 AbstractCegarLoop]: Abstraction has has 182 places, 286 transitions, 5922 flow [2021-06-11 19:06:47,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:47,846 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:47,846 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:47,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-11 19:06:47,846 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:47,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:47,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1148306967, now seen corresponding path program 11 times [2021-06-11 19:06:47,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:47,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868410807] [2021-06-11 19:06:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:47,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:47,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:47,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:47,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:06:47,876 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 19:06:47,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 19:06:47,886 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 19:06:47,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 19:06:47,900 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 19:06:47,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 19:06:47,919 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 19:06:47,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 19:06:47,945 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 19:06:47,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 19:06:47,979 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 19:06:47,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 19:06:48,017 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:06:48,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:06:48,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:48,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868410807] [2021-06-11 19:06:48,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:48,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:06:48,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817113067] [2021-06-11 19:06:48,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:06:48,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:48,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:06:48,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:06:48,051 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:06:48,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 286 transitions, 5922 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:48,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:48,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:06:48,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:06:52,295 INFO L129 PetriNetUnfolder]: 3892/19260 cut-off events. [2021-06-11 19:06:52,296 INFO L130 PetriNetUnfolder]: For 424826/434469 co-relation queries the response was YES. [2021-06-11 19:06:52,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115999 conditions, 19260 events. 3892/19260 cut-off events. For 424826/434469 co-relation queries the response was YES. Maximal size of possible extension queue 2378. Compared 314084 event pairs, 1407 based on Foata normal form. 11/18673 useless extension candidates. Maximal degree in co-relation 115921. Up to 5001 conditions per place. [2021-06-11 19:06:52,627 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 219 selfloop transitions, 173 changer transitions 1/409 dead transitions. [2021-06-11 19:06:52,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 409 transitions, 9196 flow [2021-06-11 19:06:52,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:06:52,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:06:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:06:52,629 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:06:52,629 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:06:52,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:06:52,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:06:52,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:06:52,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:52,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:52,633 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:52,633 INFO L185 Difference]: Start difference. First operand has 182 places, 286 transitions, 5922 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:06:52,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 409 transitions, 9196 flow [2021-06-11 19:06:54,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 409 transitions, 8819 flow, removed 126 selfloop flow, removed 3 redundant places. [2021-06-11 19:06:54,571 INFO L241 Difference]: Finished difference. Result has 196 places, 339 transitions, 7625 flow [2021-06-11 19:06:54,571 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=5707, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7625, PETRI_PLACES=196, PETRI_TRANSITIONS=339} [2021-06-11 19:06:54,571 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 146 predicate places. [2021-06-11 19:06:54,571 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:06:54,572 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 339 transitions, 7625 flow [2021-06-11 19:06:54,572 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 339 transitions, 7625 flow [2021-06-11 19:06:54,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 195 places, 339 transitions, 7625 flow [2021-06-11 19:06:56,586 INFO L129 PetriNetUnfolder]: 0/9323 cut-off events. [2021-06-11 19:06:56,587 INFO L130 PetriNetUnfolder]: For 125417/130025 co-relation queries the response was YES. [2021-06-11 19:06:56,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34443 conditions, 9323 events. 0/9323 cut-off events. For 125417/130025 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 172994 event pairs, 0 based on Foata normal form. 152/8901 useless extension candidates. Maximal degree in co-relation 0. Up to 956 conditions per place. [2021-06-11 19:06:56,708 INFO L151 LiptonReduction]: Number of co-enabled transitions 2272 [2021-06-11 19:06:56,732 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:06:56,732 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:06:56,732 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2161 [2021-06-11 19:06:56,733 INFO L480 AbstractCegarLoop]: Abstraction has has 195 places, 339 transitions, 7625 flow [2021-06-11 19:06:56,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:56,733 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:06:56,734 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:06:56,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-11 19:06:56,734 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:06:56,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:06:56,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1553004443, now seen corresponding path program 12 times [2021-06-11 19:06:56,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:06:56,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008069974] [2021-06-11 19:06:56,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:06:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:06:56,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:56,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:06:56,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:56,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:06:56,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:56,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:06:56,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:06:56,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 19:06:56,797 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-11 19:06:56,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-11 19:06:56,828 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.3 percent of original size [2021-06-11 19:06:56,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 19:06:56,867 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-11 19:06:56,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 19:06:56,914 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 19:06:56,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 19:06:56,957 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:06:56,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:06:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:06:57,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008069974] [2021-06-11 19:06:57,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:06:57,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:06:57,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459668008] [2021-06-11 19:06:57,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:06:57,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:06:57,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:06:57,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:06:57,004 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:06:57,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 339 transitions, 7625 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:06:57,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:06:57,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:06:57,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:07:02,873 INFO L129 PetriNetUnfolder]: 3971/20301 cut-off events. [2021-06-11 19:07:02,873 INFO L130 PetriNetUnfolder]: For 535489/545854 co-relation queries the response was YES. [2021-06-11 19:07:03,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130219 conditions, 20301 events. 3971/20301 cut-off events. For 535489/545854 co-relation queries the response was YES. Maximal size of possible extension queue 2479. Compared 337023 event pairs, 1815 based on Foata normal form. 14/19554 useless extension candidates. Maximal degree in co-relation 130135. Up to 4783 conditions per place. [2021-06-11 19:07:03,074 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 281 selfloop transitions, 205 changer transitions 2/504 dead transitions. [2021-06-11 19:07:03,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 504 transitions, 12007 flow [2021-06-11 19:07:03,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:07:03,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:07:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:07:03,076 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:07:03,076 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:07:03,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:07:03,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:07:03,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:07:03,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:03,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:03,079 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:03,079 INFO L185 Difference]: Start difference. First operand has 195 places, 339 transitions, 7625 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:07:03,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 504 transitions, 12007 flow [2021-06-11 19:07:04,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 504 transitions, 11723 flow, removed 85 selfloop flow, removed 2 redundant places. [2021-06-11 19:07:04,883 INFO L241 Difference]: Finished difference. Result has 210 places, 375 transitions, 8941 flow [2021-06-11 19:07:04,883 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=7437, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8941, PETRI_PLACES=210, PETRI_TRANSITIONS=375} [2021-06-11 19:07:04,884 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 160 predicate places. [2021-06-11 19:07:04,884 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:07:04,884 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 375 transitions, 8941 flow [2021-06-11 19:07:04,884 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 375 transitions, 8941 flow [2021-06-11 19:07:04,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 209 places, 375 transitions, 8941 flow [2021-06-11 19:07:07,551 INFO L129 PetriNetUnfolder]: 0/10977 cut-off events. [2021-06-11 19:07:07,552 INFO L130 PetriNetUnfolder]: For 172973/178709 co-relation queries the response was YES. [2021-06-11 19:07:07,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42492 conditions, 10977 events. 0/10977 cut-off events. For 172973/178709 co-relation queries the response was YES. Maximal size of possible extension queue 1385. Compared 209113 event pairs, 0 based on Foata normal form. 147/10512 useless extension candidates. Maximal degree in co-relation 0. Up to 1128 conditions per place. [2021-06-11 19:07:07,637 INFO L151 LiptonReduction]: Number of co-enabled transitions 2634 [2021-06-11 19:07:07,659 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:07:07,659 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:07:07,659 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2775 [2021-06-11 19:07:07,659 INFO L480 AbstractCegarLoop]: Abstraction has has 209 places, 375 transitions, 8941 flow [2021-06-11 19:07:07,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:07,660 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:07:07,660 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:07:07,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-11 19:07:07,660 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:07:07,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:07:07,660 INFO L82 PathProgramCache]: Analyzing trace with hash 825661975, now seen corresponding path program 13 times [2021-06-11 19:07:07,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:07:07,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173821543] [2021-06-11 19:07:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:07:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:07:07,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:07:07,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:07:07,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:07:07,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:07:07,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:07:07,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:07:07,699 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 19:07:07,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 19:07:07,711 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 19:07:07,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 19:07:07,731 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 19:07:07,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 19:07:07,757 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 19:07:07,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 19:07:07,788 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 19:07:07,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 19:07:07,822 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:07:07,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:07:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:07:07,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173821543] [2021-06-11 19:07:07,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:07:07,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:07:07,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338690847] [2021-06-11 19:07:07,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:07:07,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:07:07,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:07:07,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:07:07,854 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:07:07,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 375 transitions, 8941 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:07,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:07:07,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:07:07,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:07:14,850 INFO L129 PetriNetUnfolder]: 4096/23889 cut-off events. [2021-06-11 19:07:14,850 INFO L130 PetriNetUnfolder]: For 637832/649137 co-relation queries the response was YES. [2021-06-11 19:07:15,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149715 conditions, 23889 events. 4096/23889 cut-off events. For 637832/649137 co-relation queries the response was YES. Maximal size of possible extension queue 2905. Compared 418935 event pairs, 1914 based on Foata normal form. 25/22979 useless extension candidates. Maximal degree in co-relation 149624. Up to 5149 conditions per place. [2021-06-11 19:07:15,109 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 269 selfloop transitions, 238 changer transitions 1/524 dead transitions. [2021-06-11 19:07:15,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 524 transitions, 13191 flow [2021-06-11 19:07:15,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:07:15,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:07:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:07:15,117 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:07:15,117 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:07:15,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:07:15,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:07:15,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:07:15,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:15,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:15,120 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:15,120 INFO L185 Difference]: Start difference. First operand has 209 places, 375 transitions, 8941 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:07:15,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 524 transitions, 13191 flow [2021-06-11 19:07:18,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 524 transitions, 12806 flow, removed 130 selfloop flow, removed 3 redundant places. [2021-06-11 19:07:18,066 INFO L241 Difference]: Finished difference. Result has 223 places, 436 transitions, 10986 flow [2021-06-11 19:07:18,067 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=8656, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10986, PETRI_PLACES=223, PETRI_TRANSITIONS=436} [2021-06-11 19:07:18,067 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 173 predicate places. [2021-06-11 19:07:18,067 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:07:18,067 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 436 transitions, 10986 flow [2021-06-11 19:07:18,067 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 436 transitions, 10986 flow [2021-06-11 19:07:18,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 222 places, 436 transitions, 10986 flow [2021-06-11 19:07:21,871 INFO L129 PetriNetUnfolder]: 0/12611 cut-off events. [2021-06-11 19:07:21,871 INFO L130 PetriNetUnfolder]: For 239990/246870 co-relation queries the response was YES. [2021-06-11 19:07:21,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51389 conditions, 12611 events. 0/12611 cut-off events. For 239990/246870 co-relation queries the response was YES. Maximal size of possible extension queue 1595. Compared 245840 event pairs, 0 based on Foata normal form. 228/12108 useless extension candidates. Maximal degree in co-relation 0. Up to 1309 conditions per place. [2021-06-11 19:07:21,995 INFO L151 LiptonReduction]: Number of co-enabled transitions 3078 [2021-06-11 19:07:22,026 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:07:22,026 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:07:22,026 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3959 [2021-06-11 19:07:22,026 INFO L480 AbstractCegarLoop]: Abstraction has has 222 places, 436 transitions, 10986 flow [2021-06-11 19:07:22,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:22,027 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:07:22,027 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:07:22,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-11 19:07:22,027 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:07:22,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:07:22,027 INFO L82 PathProgramCache]: Analyzing trace with hash -742751195, now seen corresponding path program 14 times [2021-06-11 19:07:22,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:07:22,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011932336] [2021-06-11 19:07:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:07:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:07:22,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:07:22,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:07:22,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:07:22,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:07:22,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:07:22,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:07:22,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:07:22,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 19:07:22,072 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 19:07:22,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 19:07:22,088 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 19:07:22,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 19:07:22,108 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-11 19:07:22,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 19:07:22,164 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 19:07:22,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 19:07:22,195 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:07:22,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:07:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:07:22,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011932336] [2021-06-11 19:07:22,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:07:22,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:07:22,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253954648] [2021-06-11 19:07:22,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:07:22,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:07:22,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:07:22,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:07:22,226 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:07:22,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 436 transitions, 10986 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:22,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:07:22,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:07:22,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:07:30,442 INFO L129 PetriNetUnfolder]: 4071/24168 cut-off events. [2021-06-11 19:07:30,442 INFO L130 PetriNetUnfolder]: For 726016/736855 co-relation queries the response was YES. [2021-06-11 19:07:30,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159466 conditions, 24168 events. 4071/24168 cut-off events. For 726016/736855 co-relation queries the response was YES. Maximal size of possible extension queue 3055. Compared 425920 event pairs, 2127 based on Foata normal form. 22/23427 useless extension candidates. Maximal degree in co-relation 159369. Up to 4617 conditions per place. [2021-06-11 19:07:30,710 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 304 selfloop transitions, 276 changer transitions 2/598 dead transitions. [2021-06-11 19:07:30,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 598 transitions, 15970 flow [2021-06-11 19:07:30,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:07:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:07:30,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:07:30,712 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:07:30,712 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:07:30,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:07:30,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:07:30,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:07:30,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:30,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:30,715 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:30,715 INFO L185 Difference]: Start difference. First operand has 222 places, 436 transitions, 10986 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:07:30,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 598 transitions, 15970 flow [2021-06-11 19:07:33,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 598 transitions, 15516 flow, removed 165 selfloop flow, removed 2 redundant places. [2021-06-11 19:07:33,610 INFO L241 Difference]: Finished difference. Result has 237 places, 469 transitions, 12534 flow [2021-06-11 19:07:33,610 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=10622, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12534, PETRI_PLACES=237, PETRI_TRANSITIONS=469} [2021-06-11 19:07:33,611 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 187 predicate places. [2021-06-11 19:07:33,611 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:07:33,611 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 469 transitions, 12534 flow [2021-06-11 19:07:33,611 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 469 transitions, 12534 flow [2021-06-11 19:07:33,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 236 places, 469 transitions, 12534 flow [2021-06-11 19:07:38,021 INFO L129 PetriNetUnfolder]: 0/13440 cut-off events. [2021-06-11 19:07:38,022 INFO L130 PetriNetUnfolder]: For 285060/292478 co-relation queries the response was YES. [2021-06-11 19:07:38,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57637 conditions, 13440 events. 0/13440 cut-off events. For 285060/292478 co-relation queries the response was YES. Maximal size of possible extension queue 1679. Compared 264532 event pairs, 0 based on Foata normal form. 172/12774 useless extension candidates. Maximal degree in co-relation 0. Up to 1397 conditions per place. [2021-06-11 19:07:38,138 INFO L151 LiptonReduction]: Number of co-enabled transitions 3334 [2021-06-11 19:07:38,172 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:07:38,172 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:07:38,172 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4561 [2021-06-11 19:07:38,173 INFO L480 AbstractCegarLoop]: Abstraction has has 236 places, 469 transitions, 12534 flow [2021-06-11 19:07:38,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:38,173 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:07:38,173 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:07:38,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-11 19:07:38,173 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:07:38,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:07:38,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1845019367, now seen corresponding path program 15 times [2021-06-11 19:07:38,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:07:38,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465409810] [2021-06-11 19:07:38,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:07:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:07:38,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:07:38,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:07:38,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:07:38,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:07:38,207 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 19:07:38,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 19:07:38,221 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 19:07:38,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 19:07:38,233 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 19:07:38,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 19:07:38,263 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 19:07:38,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 19:07:38,287 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 19:07:38,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 19:07:38,312 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 19:07:38,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 19:07:38,342 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:07:38,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:07:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:07:38,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465409810] [2021-06-11 19:07:38,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:07:38,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:07:38,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520327298] [2021-06-11 19:07:38,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:07:38,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:07:38,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:07:38,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:07:38,373 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:07:38,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 469 transitions, 12534 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:38,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:07:38,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:07:38,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:07:46,676 INFO L129 PetriNetUnfolder]: 4075/24720 cut-off events. [2021-06-11 19:07:46,677 INFO L130 PetriNetUnfolder]: For 828291/839384 co-relation queries the response was YES. [2021-06-11 19:07:46,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169753 conditions, 24720 events. 4075/24720 cut-off events. For 828291/839384 co-relation queries the response was YES. Maximal size of possible extension queue 3079. Compared 438444 event pairs, 2089 based on Foata normal form. 29/23895 useless extension candidates. Maximal degree in co-relation 169649. Up to 5064 conditions per place. [2021-06-11 19:07:46,959 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 302 selfloop transitions, 282 changer transitions 1/601 dead transitions. [2021-06-11 19:07:46,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 601 transitions, 16764 flow [2021-06-11 19:07:46,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:07:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:07:46,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:07:46,961 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:07:46,961 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:07:46,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:07:46,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:07:46,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:07:46,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:46,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:46,963 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:46,963 INFO L185 Difference]: Start difference. First operand has 236 places, 469 transitions, 12534 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:07:46,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 601 transitions, 16764 flow [2021-06-11 19:07:51,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 601 transitions, 16344 flow, removed 147 selfloop flow, removed 3 redundant places. [2021-06-11 19:07:51,519 INFO L241 Difference]: Finished difference. Result has 250 places, 508 transitions, 14238 flow [2021-06-11 19:07:51,519 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=12208, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14238, PETRI_PLACES=250, PETRI_TRANSITIONS=508} [2021-06-11 19:07:51,519 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 200 predicate places. [2021-06-11 19:07:51,519 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:07:51,519 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 508 transitions, 14238 flow [2021-06-11 19:07:51,520 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 508 transitions, 14238 flow [2021-06-11 19:07:51,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 249 places, 508 transitions, 14238 flow [2021-06-11 19:07:55,993 INFO L129 PetriNetUnfolder]: 0/13831 cut-off events. [2021-06-11 19:07:55,993 INFO L130 PetriNetUnfolder]: For 319754/328931 co-relation queries the response was YES. [2021-06-11 19:07:55,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61639 conditions, 13831 events. 0/13831 cut-off events. For 319754/328931 co-relation queries the response was YES. Maximal size of possible extension queue 1752. Compared 273715 event pairs, 0 based on Foata normal form. 145/13098 useless extension candidates. Maximal degree in co-relation 0. Up to 1442 conditions per place. [2021-06-11 19:07:56,122 INFO L151 LiptonReduction]: Number of co-enabled transitions 3718 [2021-06-11 19:07:56,161 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:07:56,161 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:07:56,161 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4642 [2021-06-11 19:07:56,161 INFO L480 AbstractCegarLoop]: Abstraction has has 249 places, 508 transitions, 14238 flow [2021-06-11 19:07:56,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:56,162 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:07:56,162 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:07:56,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-11 19:07:56,162 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:07:56,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:07:56,162 INFO L82 PathProgramCache]: Analyzing trace with hash 565321301, now seen corresponding path program 16 times [2021-06-11 19:07:56,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:07:56,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536381918] [2021-06-11 19:07:56,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:07:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:07:56,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:07:56,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:07:56,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:07:56,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:07:56,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:07:56,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:07:56,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:07:56,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 19:07:56,207 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 19:07:56,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 19:07:56,224 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 19:07:56,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 19:07:56,247 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-11 19:07:56,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 19:07:56,300 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 19:07:56,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 19:07:56,332 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:07:56,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:07:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:07:56,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536381918] [2021-06-11 19:07:56,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:07:56,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:07:56,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269982528] [2021-06-11 19:07:56,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:07:56,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:07:56,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:07:56,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:07:56,365 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:07:56,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 508 transitions, 14238 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:07:56,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:07:56,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:07:56,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:08:05,529 INFO L129 PetriNetUnfolder]: 4026/25615 cut-off events. [2021-06-11 19:08:05,529 INFO L130 PetriNetUnfolder]: For 915494/924736 co-relation queries the response was YES. [2021-06-11 19:08:05,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179844 conditions, 25615 events. 4026/25615 cut-off events. For 915494/924736 co-relation queries the response was YES. Maximal size of possible extension queue 3245. Compared 461098 event pairs, 2210 based on Foata normal form. 29/24731 useless extension candidates. Maximal degree in co-relation 179734. Up to 4766 conditions per place. [2021-06-11 19:08:05,875 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 349 selfloop transitions, 313 changer transitions 2/680 dead transitions. [2021-06-11 19:08:05,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 680 transitions, 20215 flow [2021-06-11 19:08:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:08:05,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:08:05,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:08:05,876 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:08:05,876 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:08:05,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:08:05,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:08:05,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:08:05,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:08:05,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:08:05,879 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:08:05,879 INFO L185 Difference]: Start difference. First operand has 249 places, 508 transitions, 14238 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:08:05,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 680 transitions, 20215 flow [2021-06-11 19:08:10,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 680 transitions, 19767 flow, removed 162 selfloop flow, removed 2 redundant places. [2021-06-11 19:08:10,580 INFO L241 Difference]: Finished difference. Result has 263 places, 556 transitions, 16293 flow [2021-06-11 19:08:10,580 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=13902, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16293, PETRI_PLACES=263, PETRI_TRANSITIONS=556} [2021-06-11 19:08:10,580 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 213 predicate places. [2021-06-11 19:08:10,580 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:08:10,581 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 263 places, 556 transitions, 16293 flow [2021-06-11 19:08:10,581 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 263 places, 556 transitions, 16293 flow [2021-06-11 19:08:10,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 262 places, 556 transitions, 16293 flow [2021-06-11 19:08:15,400 INFO L129 PetriNetUnfolder]: 0/15066 cut-off events. [2021-06-11 19:08:15,401 INFO L130 PetriNetUnfolder]: For 403476/412766 co-relation queries the response was YES. [2021-06-11 19:08:15,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70652 conditions, 15066 events. 0/15066 cut-off events. For 403476/412766 co-relation queries the response was YES. Maximal size of possible extension queue 1897. Compared 301603 event pairs, 0 based on Foata normal form. 220/14425 useless extension candidates. Maximal degree in co-relation 0. Up to 1565 conditions per place. [2021-06-11 19:08:15,564 INFO L151 LiptonReduction]: Number of co-enabled transitions 4060 [2021-06-11 19:08:15,610 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:08:15,610 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:08:15,610 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5030 [2021-06-11 19:08:15,611 INFO L480 AbstractCegarLoop]: Abstraction has has 262 places, 556 transitions, 16293 flow [2021-06-11 19:08:15,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:08:15,611 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:08:15,611 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:08:15,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-11 19:08:15,611 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:08:15,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:08:15,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1425841649, now seen corresponding path program 17 times [2021-06-11 19:08:15,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:08:15,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039262024] [2021-06-11 19:08:15,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:08:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:08:15,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:08:15,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:08:15,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:08:15,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:08:15,634 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 19:08:15,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 19:08:15,643 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 19:08:15,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 19:08:15,655 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 19:08:15,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 19:08:15,683 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 19:08:15,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 19:08:15,706 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 19:08:15,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 19:08:15,738 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 19:08:15,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 19:08:15,772 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:08:15,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:08:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:08:15,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039262024] [2021-06-11 19:08:15,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:08:15,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:08:15,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848813976] [2021-06-11 19:08:15,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:08:15,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:08:15,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:08:15,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:08:15,804 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:08:15,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 556 transitions, 16293 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:08:15,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:08:15,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:08:15,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:08:25,225 INFO L129 PetriNetUnfolder]: 4012/26060 cut-off events. [2021-06-11 19:08:25,226 INFO L130 PetriNetUnfolder]: For 1010931/1020615 co-relation queries the response was YES. [2021-06-11 19:08:25,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187337 conditions, 26060 events. 4012/26060 cut-off events. For 1010931/1020615 co-relation queries the response was YES. Maximal size of possible extension queue 3243. Compared 471693 event pairs, 2190 based on Foata normal form. 40/25136 useless extension candidates. Maximal degree in co-relation 187221. Up to 5064 conditions per place. [2021-06-11 19:08:25,617 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 314 selfloop transitions, 349 changer transitions 1/680 dead transitions. [2021-06-11 19:08:25,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 680 transitions, 20987 flow [2021-06-11 19:08:25,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:08:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:08:25,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:08:25,619 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:08:25,619 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:08:25,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:08:25,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:08:25,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:08:25,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:08:25,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:08:25,622 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:08:25,622 INFO L185 Difference]: Start difference. First operand has 262 places, 556 transitions, 16293 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:08:25,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 680 transitions, 20987 flow [2021-06-11 19:08:31,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 680 transitions, 20203 flow, removed 182 selfloop flow, removed 4 redundant places. [2021-06-11 19:08:31,188 INFO L241 Difference]: Finished difference. Result has 274 places, 583 transitions, 17514 flow [2021-06-11 19:08:31,188 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=15645, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17514, PETRI_PLACES=274, PETRI_TRANSITIONS=583} [2021-06-11 19:08:31,188 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 224 predicate places. [2021-06-11 19:08:31,189 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:08:31,189 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 274 places, 583 transitions, 17514 flow [2021-06-11 19:08:31,189 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 274 places, 583 transitions, 17514 flow [2021-06-11 19:08:31,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 273 places, 583 transitions, 17514 flow [2021-06-11 19:08:35,819 INFO L129 PetriNetUnfolder]: 0/15283 cut-off events. [2021-06-11 19:08:35,820 INFO L130 PetriNetUnfolder]: For 426354/435985 co-relation queries the response was YES. [2021-06-11 19:08:35,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73270 conditions, 15283 events. 0/15283 cut-off events. For 426354/435985 co-relation queries the response was YES. Maximal size of possible extension queue 1983. Compared 306626 event pairs, 0 based on Foata normal form. 204/14609 useless extension candidates. Maximal degree in co-relation 0. Up to 1589 conditions per place. [2021-06-11 19:08:35,979 INFO L151 LiptonReduction]: Number of co-enabled transitions 4360 [2021-06-11 19:08:36,025 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:08:36,025 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:08:36,025 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4836 [2021-06-11 19:08:36,026 INFO L480 AbstractCegarLoop]: Abstraction has has 273 places, 583 transitions, 17514 flow [2021-06-11 19:08:36,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:08:36,026 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:08:36,026 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:08:36,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-11 19:08:36,026 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:08:36,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:08:36,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1009115031, now seen corresponding path program 18 times [2021-06-11 19:08:36,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:08:36,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744334497] [2021-06-11 19:08:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:08:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:08:36,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:08:36,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:08:36,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:08:36,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:08:36,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:08:36,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 19:08:36,061 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 19:08:36,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 19:08:36,074 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 19:08:36,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 19:08:36,091 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 19:08:36,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 19:08:36,132 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-11 19:08:36,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 19:08:36,185 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 19:08:36,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 19:08:36,217 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:08:36,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:08:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:08:36,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744334497] [2021-06-11 19:08:36,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:08:36,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:08:36,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613161985] [2021-06-11 19:08:36,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:08:36,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:08:36,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:08:36,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:08:36,249 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:08:36,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 583 transitions, 17514 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:08:36,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:08:36,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:08:36,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:08:46,070 INFO L129 PetriNetUnfolder]: 4056/26505 cut-off events. [2021-06-11 19:08:46,070 INFO L130 PetriNetUnfolder]: For 1077000/1087137 co-relation queries the response was YES. [2021-06-11 19:08:46,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 195139 conditions, 26505 events. 4056/26505 cut-off events. For 1077000/1087137 co-relation queries the response was YES. Maximal size of possible extension queue 3360. Compared 482286 event pairs, 2267 based on Foata normal form. 46/25579 useless extension candidates. Maximal degree in co-relation 195018. Up to 4885 conditions per place. [2021-06-11 19:08:46,447 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 320 selfloop transitions, 384 changer transitions 2/722 dead transitions. [2021-06-11 19:08:46,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 722 transitions, 23098 flow [2021-06-11 19:08:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:08:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:08:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:08:46,449 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:08:46,449 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:08:46,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:08:46,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:08:46,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:08:46,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:08:46,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:08:46,452 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:08:46,452 INFO L185 Difference]: Start difference. First operand has 273 places, 583 transitions, 17514 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:08:46,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 722 transitions, 23098 flow [2021-06-11 19:08:52,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 722 transitions, 22301 flow, removed 183 selfloop flow, removed 3 redundant places. [2021-06-11 19:08:52,901 INFO L241 Difference]: Finished difference. Result has 286 places, 636 transitions, 19938 flow [2021-06-11 19:08:52,901 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=16901, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19938, PETRI_PLACES=286, PETRI_TRANSITIONS=636} [2021-06-11 19:08:52,901 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 236 predicate places. [2021-06-11 19:08:52,901 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:08:52,901 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 286 places, 636 transitions, 19938 flow [2021-06-11 19:08:52,902 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 286 places, 636 transitions, 19938 flow [2021-06-11 19:08:52,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 285 places, 636 transitions, 19938 flow [2021-06-11 19:08:57,747 INFO L129 PetriNetUnfolder]: 0/15800 cut-off events. [2021-06-11 19:08:57,747 INFO L130 PetriNetUnfolder]: For 478032/488974 co-relation queries the response was YES. [2021-06-11 19:08:57,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78355 conditions, 15800 events. 0/15800 cut-off events. For 478032/488974 co-relation queries the response was YES. Maximal size of possible extension queue 2062. Compared 318542 event pairs, 0 based on Foata normal form. 217/15106 useless extension candidates. Maximal degree in co-relation 0. Up to 1660 conditions per place. [2021-06-11 19:08:57,913 INFO L151 LiptonReduction]: Number of co-enabled transitions 4742 [2021-06-11 19:08:57,966 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:08:57,967 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:08:57,967 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5066 [2021-06-11 19:08:57,967 INFO L480 AbstractCegarLoop]: Abstraction has has 285 places, 636 transitions, 19938 flow [2021-06-11 19:08:57,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:08:57,967 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:08:57,968 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:08:57,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-11 19:08:57,968 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:08:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:08:57,968 INFO L82 PathProgramCache]: Analyzing trace with hash 231563487, now seen corresponding path program 19 times [2021-06-11 19:08:57,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:08:57,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515175705] [2021-06-11 19:08:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:08:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:08:57,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:08:57,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:08:57,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:08:57,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:08:57,997 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 19:08:57,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 19:08:58,006 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 19:08:58,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 19:08:58,019 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 19:08:58,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 19:08:58,038 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 19:08:58,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 19:08:58,061 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-11 19:08:58,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 19:08:58,105 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 19:08:58,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 19:08:58,136 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:08:58,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:08:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:08:58,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515175705] [2021-06-11 19:08:58,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:08:58,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:08:58,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672086083] [2021-06-11 19:08:58,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:08:58,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:08:58,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:08:58,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:08:58,172 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:08:58,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 636 transitions, 19938 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:08:58,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:08:58,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:08:58,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:09:09,492 INFO L129 PetriNetUnfolder]: 4065/26940 cut-off events. [2021-06-11 19:09:09,492 INFO L130 PetriNetUnfolder]: For 1131303/1141601 co-relation queries the response was YES. [2021-06-11 19:09:09,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200450 conditions, 26940 events. 4065/26940 cut-off events. For 1131303/1141601 co-relation queries the response was YES. Maximal size of possible extension queue 3359. Compared 491811 event pairs, 2205 based on Foata normal form. 47/25927 useless extension candidates. Maximal degree in co-relation 200323. Up to 5064 conditions per place. [2021-06-11 19:09:09,911 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 288 selfloop transitions, 433 changer transitions 2/739 dead transitions. [2021-06-11 19:09:09,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 739 transitions, 24252 flow [2021-06-11 19:09:09,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:09:09,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:09:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:09:09,912 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:09:09,912 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:09:09,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:09:09,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:09:09,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:09:09,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:09:09,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:09:09,914 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:09:09,914 INFO L185 Difference]: Start difference. First operand has 285 places, 636 transitions, 19938 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:09:09,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 739 transitions, 24252 flow [2021-06-11 19:09:17,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 739 transitions, 23574 flow, removed 129 selfloop flow, removed 4 redundant places. [2021-06-11 19:09:17,261 INFO L241 Difference]: Finished difference. Result has 296 places, 672 transitions, 21669 flow [2021-06-11 19:09:17,262 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=19382, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21669, PETRI_PLACES=296, PETRI_TRANSITIONS=672} [2021-06-11 19:09:17,262 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 246 predicate places. [2021-06-11 19:09:17,262 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:09:17,262 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 296 places, 672 transitions, 21669 flow [2021-06-11 19:09:17,262 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 296 places, 672 transitions, 21669 flow [2021-06-11 19:09:17,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 295 places, 672 transitions, 21669 flow [2021-06-11 19:09:21,611 INFO L129 PetriNetUnfolder]: 0/15956 cut-off events. [2021-06-11 19:09:21,611 INFO L130 PetriNetUnfolder]: For 490958/502736 co-relation queries the response was YES. [2021-06-11 19:09:21,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79860 conditions, 15956 events. 0/15956 cut-off events. For 490958/502736 co-relation queries the response was YES. Maximal size of possible extension queue 2074. Compared 322011 event pairs, 0 based on Foata normal form. 212/15276 useless extension candidates. Maximal degree in co-relation 0. Up to 1681 conditions per place. [2021-06-11 19:09:21,765 INFO L151 LiptonReduction]: Number of co-enabled transitions 5040 [2021-06-11 19:09:21,825 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:09:21,825 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:09:21,825 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4563 [2021-06-11 19:09:21,826 INFO L480 AbstractCegarLoop]: Abstraction has has 295 places, 672 transitions, 21669 flow [2021-06-11 19:09:21,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:09:21,826 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:09:21,826 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:09:21,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-11 19:09:21,826 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:09:21,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:09:21,826 INFO L82 PathProgramCache]: Analyzing trace with hash -975072863, now seen corresponding path program 20 times [2021-06-11 19:09:21,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:09:21,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302346838] [2021-06-11 19:09:21,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:09:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:09:21,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:09:21,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:09:21,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:09:21,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:09:21,850 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 19:09:21,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 19:09:21,859 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 19:09:21,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 19:09:21,872 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 19:09:21,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 19:09:21,890 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 19:09:21,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 19:09:21,928 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-11 19:09:21,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 19:09:21,981 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 19:09:21,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 19:09:22,021 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:09:22,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:09:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:09:22,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302346838] [2021-06-11 19:09:22,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:09:22,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:09:22,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696677193] [2021-06-11 19:09:22,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:09:22,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:09:22,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:09:22,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:09:22,062 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:09:22,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 672 transitions, 21669 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:09:22,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:09:22,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:09:22,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:09:32,593 INFO L129 PetriNetUnfolder]: 4028/26811 cut-off events. [2021-06-11 19:09:32,593 INFO L130 PetriNetUnfolder]: For 1149441/1159854 co-relation queries the response was YES. [2021-06-11 19:09:32,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202090 conditions, 26811 events. 4028/26811 cut-off events. For 1149441/1159854 co-relation queries the response was YES. Maximal size of possible extension queue 3385. Compared 489061 event pairs, 2475 based on Foata normal form. 49/25872 useless extension candidates. Maximal degree in co-relation 201959. Up to 5075 conditions per place. [2021-06-11 19:09:32,944 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 281 selfloop transitions, 486 changer transitions 2/785 dead transitions. [2021-06-11 19:09:32,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 785 transitions, 26401 flow [2021-06-11 19:09:32,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:09:32,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:09:32,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:09:32,946 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:09:32,946 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:09:32,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:09:32,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:09:32,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:09:32,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:09:32,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:09:32,947 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:09:32,947 INFO L185 Difference]: Start difference. First operand has 295 places, 672 transitions, 21669 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:09:32,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 785 transitions, 26401 flow [2021-06-11 19:09:41,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 785 transitions, 25419 flow, removed 134 selfloop flow, removed 5 redundant places. [2021-06-11 19:09:41,121 INFO L241 Difference]: Finished difference. Result has 306 places, 692 transitions, 22994 flow [2021-06-11 19:09:41,121 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=20761, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=466, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22994, PETRI_PLACES=306, PETRI_TRANSITIONS=692} [2021-06-11 19:09:41,121 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 256 predicate places. [2021-06-11 19:09:41,121 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:09:41,121 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 692 transitions, 22994 flow [2021-06-11 19:09:41,122 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 692 transitions, 22994 flow [2021-06-11 19:09:41,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 305 places, 692 transitions, 22994 flow [2021-06-11 19:09:45,665 INFO L129 PetriNetUnfolder]: 0/16265 cut-off events. [2021-06-11 19:09:45,666 INFO L130 PetriNetUnfolder]: For 526213/538821 co-relation queries the response was YES. [2021-06-11 19:09:45,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82667 conditions, 16265 events. 0/16265 cut-off events. For 526213/538821 co-relation queries the response was YES. Maximal size of possible extension queue 2121. Compared 329302 event pairs, 0 based on Foata normal form. 269/15609 useless extension candidates. Maximal degree in co-relation 0. Up to 1727 conditions per place. [2021-06-11 19:09:45,837 INFO L151 LiptonReduction]: Number of co-enabled transitions 5260 [2021-06-11 19:09:45,904 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:09:45,904 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:09:45,904 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4783 [2021-06-11 19:09:45,904 INFO L480 AbstractCegarLoop]: Abstraction has has 305 places, 692 transitions, 22994 flow [2021-06-11 19:09:45,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:09:45,905 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:09:45,905 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:09:45,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-11 19:09:45,905 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:09:45,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:09:45,905 INFO L82 PathProgramCache]: Analyzing trace with hash 50421295, now seen corresponding path program 21 times [2021-06-11 19:09:45,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:09:45,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561981265] [2021-06-11 19:09:45,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:09:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:09:45,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:09:45,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:09:45,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:09:45,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:09:45,933 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 19:09:45,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 19:09:45,941 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 19:09:45,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 19:09:45,954 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 19:09:45,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 19:09:45,972 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 19:09:45,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 19:09:46,007 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-06-11 19:09:46,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-11 19:09:46,048 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 19:09:46,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 19:09:46,079 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:09:46,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:09:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:09:46,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561981265] [2021-06-11 19:09:46,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:09:46,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:09:46,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026735724] [2021-06-11 19:09:46,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:09:46,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:09:46,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:09:46,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:09:46,109 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:09:46,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 692 transitions, 22994 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:09:46,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:09:46,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:09:46,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:09:57,796 INFO L129 PetriNetUnfolder]: 4029/27567 cut-off events. [2021-06-11 19:09:57,796 INFO L130 PetriNetUnfolder]: For 1195065/1205648 co-relation queries the response was YES. [2021-06-11 19:09:58,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207737 conditions, 27567 events. 4029/27567 cut-off events. For 1195065/1205648 co-relation queries the response was YES. Maximal size of possible extension queue 3477. Compared 508053 event pairs, 2166 based on Foata normal form. 45/26532 useless extension candidates. Maximal degree in co-relation 207601. Up to 5064 conditions per place. [2021-06-11 19:09:58,207 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 385 selfloop transitions, 414 changer transitions 1/816 dead transitions. [2021-06-11 19:09:58,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 816 transitions, 28132 flow [2021-06-11 19:09:58,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:09:58,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:09:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:09:58,209 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:09:58,209 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:09:58,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:09:58,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:09:58,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:09:58,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:09:58,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:09:58,212 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:09:58,212 INFO L185 Difference]: Start difference. First operand has 305 places, 692 transitions, 22994 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:09:58,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 816 transitions, 28132 flow [2021-06-11 19:10:08,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 816 transitions, 27330 flow, removed 185 selfloop flow, removed 4 redundant places. [2021-06-11 19:10:08,356 INFO L241 Difference]: Finished difference. Result has 316 places, 734 transitions, 24793 flow [2021-06-11 19:10:08,356 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=22394, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=372, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24793, PETRI_PLACES=316, PETRI_TRANSITIONS=734} [2021-06-11 19:10:08,357 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 266 predicate places. [2021-06-11 19:10:08,357 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:10:08,357 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 316 places, 734 transitions, 24793 flow [2021-06-11 19:10:08,357 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 316 places, 734 transitions, 24793 flow [2021-06-11 19:10:08,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 315 places, 734 transitions, 24793 flow [2021-06-11 19:10:13,527 INFO L129 PetriNetUnfolder]: 0/16825 cut-off events. [2021-06-11 19:10:13,527 INFO L130 PetriNetUnfolder]: For 548261/561049 co-relation queries the response was YES. [2021-06-11 19:10:13,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86861 conditions, 16825 events. 0/16825 cut-off events. For 548261/561049 co-relation queries the response was YES. Maximal size of possible extension queue 2226. Compared 342304 event pairs, 0 based on Foata normal form. 283/16133 useless extension candidates. Maximal degree in co-relation 0. Up to 1788 conditions per place. [2021-06-11 19:10:13,999 INFO L151 LiptonReduction]: Number of co-enabled transitions 5542 [2021-06-11 19:10:14,073 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:10:14,073 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:10:14,073 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5716 [2021-06-11 19:10:14,074 INFO L480 AbstractCegarLoop]: Abstraction has has 315 places, 734 transitions, 24793 flow [2021-06-11 19:10:14,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:10:14,074 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:10:14,074 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:10:14,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-11 19:10:14,074 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:10:14,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:10:14,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1820257003, now seen corresponding path program 22 times [2021-06-11 19:10:14,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:10:14,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528937100] [2021-06-11 19:10:14,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:10:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:10:14,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:10:14,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:10:14,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:10:14,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:10:14,114 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 19:10:14,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 19:10:14,124 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 19:10:14,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 19:10:14,138 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 19:10:14,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 19:10:14,156 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 19:10:14,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 19:10:14,179 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-11 19:10:14,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 19:10:14,232 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 19:10:14,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 19:10:14,273 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:10:14,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:10:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:10:14,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528937100] [2021-06-11 19:10:14,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:10:14,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:10:14,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257984619] [2021-06-11 19:10:14,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:10:14,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:10:14,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:10:14,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:10:14,314 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:10:14,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 734 transitions, 24793 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:10:14,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:10:14,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:10:14,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:10:26,320 INFO L129 PetriNetUnfolder]: 3997/27776 cut-off events. [2021-06-11 19:10:26,320 INFO L130 PetriNetUnfolder]: For 1201483/1212061 co-relation queries the response was YES. [2021-06-11 19:10:26,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209620 conditions, 27776 events. 3997/27776 cut-off events. For 1201483/1212061 co-relation queries the response was YES. Maximal size of possible extension queue 3514. Compared 513570 event pairs, 2334 based on Foata normal form. 55/26759 useless extension candidates. Maximal degree in co-relation 209480. Up to 5075 conditions per place. [2021-06-11 19:10:26,792 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 264 selfloop transitions, 546 changer transitions 2/828 dead transitions. [2021-06-11 19:10:26,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 828 transitions, 29083 flow [2021-06-11 19:10:26,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:10:26,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:10:26,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:10:26,794 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:10:26,794 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:10:26,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:10:26,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:10:26,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:10:26,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:10:26,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:10:26,796 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:10:26,796 INFO L185 Difference]: Start difference. First operand has 315 places, 734 transitions, 24793 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:10:26,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 828 transitions, 29083 flow [2021-06-11 19:10:36,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 828 transitions, 28208 flow, removed 109 selfloop flow, removed 4 redundant places. [2021-06-11 19:10:36,137 INFO L241 Difference]: Finished difference. Result has 326 places, 756 transitions, 26138 flow [2021-06-11 19:10:36,137 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=23996, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=26138, PETRI_PLACES=326, PETRI_TRANSITIONS=756} [2021-06-11 19:10:36,137 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 276 predicate places. [2021-06-11 19:10:36,138 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:10:36,138 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 326 places, 756 transitions, 26138 flow [2021-06-11 19:10:36,138 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 326 places, 756 transitions, 26138 flow [2021-06-11 19:10:36,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 325 places, 756 transitions, 26138 flow [2021-06-11 19:10:40,840 INFO L129 PetriNetUnfolder]: 0/17181 cut-off events. [2021-06-11 19:10:40,840 INFO L130 PetriNetUnfolder]: For 583923/597878 co-relation queries the response was YES. [2021-06-11 19:10:40,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89882 conditions, 17181 events. 0/17181 cut-off events. For 583923/597878 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 350615 event pairs, 0 based on Foata normal form. 291/16467 useless extension candidates. Maximal degree in co-relation 0. Up to 1830 conditions per place. [2021-06-11 19:10:41,029 INFO L151 LiptonReduction]: Number of co-enabled transitions 5752 [2021-06-11 19:10:41,106 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:10:41,106 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:10:41,106 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4968 [2021-06-11 19:10:41,106 INFO L480 AbstractCegarLoop]: Abstraction has has 325 places, 756 transitions, 26138 flow [2021-06-11 19:10:41,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:10:41,107 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:10:41,107 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:10:41,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-11 19:10:41,107 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:10:41,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:10:41,107 INFO L82 PathProgramCache]: Analyzing trace with hash -362432279, now seen corresponding path program 23 times [2021-06-11 19:10:41,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:10:41,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28568243] [2021-06-11 19:10:41,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:10:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:10:41,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:10:41,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:10:41,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:10:41,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:10:41,168 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 19:10:41,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 19:10:41,177 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 19:10:41,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 19:10:41,190 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-11 19:10:41,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-11 19:10:41,208 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 19:10:41,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 19:10:41,238 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 19:10:41,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 19:10:41,272 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 19:10:41,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 19:10:41,313 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:10:41,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:10:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:10:41,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28568243] [2021-06-11 19:10:41,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:10:41,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:10:41,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324898778] [2021-06-11 19:10:41,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:10:41,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:10:41,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:10:41,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:10:41,355 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:10:41,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 756 transitions, 26138 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:10:41,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:10:41,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:10:41,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:10:54,061 INFO L129 PetriNetUnfolder]: 3991/27841 cut-off events. [2021-06-11 19:10:54,061 INFO L130 PetriNetUnfolder]: For 1216017/1226777 co-relation queries the response was YES. [2021-06-11 19:10:54,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 210875 conditions, 27841 events. 3991/27841 cut-off events. For 1216017/1226777 co-relation queries the response was YES. Maximal size of possible extension queue 3522. Compared 515320 event pairs, 2312 based on Foata normal form. 60/26813 useless extension candidates. Maximal degree in co-relation 210730. Up to 5075 conditions per place. [2021-06-11 19:10:54,449 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 234 selfloop transitions, 575 changer transitions 1/826 dead transitions. [2021-06-11 19:10:54,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 826 transitions, 29776 flow [2021-06-11 19:10:54,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:10:54,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:10:54,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:10:54,450 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:10:54,450 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:10:54,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:10:54,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:10:54,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:10:54,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:10:54,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:10:54,453 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:10:54,453 INFO L185 Difference]: Start difference. First operand has 325 places, 756 transitions, 26138 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:10:54,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 826 transitions, 29776 flow [2021-06-11 19:11:03,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 826 transitions, 28701 flow, removed 140 selfloop flow, removed 5 redundant places. [2021-06-11 19:11:03,680 INFO L241 Difference]: Finished difference. Result has 335 places, 781 transitions, 27549 flow [2021-06-11 19:11:03,681 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=25163, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=756, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=550, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27549, PETRI_PLACES=335, PETRI_TRANSITIONS=781} [2021-06-11 19:11:03,681 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 285 predicate places. [2021-06-11 19:11:03,681 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:11:03,681 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 335 places, 781 transitions, 27549 flow [2021-06-11 19:11:03,682 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 335 places, 781 transitions, 27549 flow [2021-06-11 19:11:03,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 334 places, 781 transitions, 27549 flow [2021-06-11 19:11:08,410 INFO L129 PetriNetUnfolder]: 0/17229 cut-off events. [2021-06-11 19:11:08,410 INFO L130 PetriNetUnfolder]: For 584596/600436 co-relation queries the response was YES. [2021-06-11 19:11:08,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90241 conditions, 17229 events. 0/17229 cut-off events. For 584596/600436 co-relation queries the response was YES. Maximal size of possible extension queue 2213. Compared 351324 event pairs, 0 based on Foata normal form. 288/16381 useless extension candidates. Maximal degree in co-relation 0. Up to 1836 conditions per place. [2021-06-11 19:11:08,595 INFO L151 LiptonReduction]: Number of co-enabled transitions 6006 [2021-06-11 19:11:08,678 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:11:08,678 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:11:08,679 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4998 [2021-06-11 19:11:08,679 INFO L480 AbstractCegarLoop]: Abstraction has has 334 places, 781 transitions, 27549 flow [2021-06-11 19:11:08,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:11:08,679 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:11:08,679 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:11:08,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-11 19:11:08,679 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:11:08,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:11:08,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1730551183, now seen corresponding path program 24 times [2021-06-11 19:11:08,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:11:08,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562147078] [2021-06-11 19:11:08,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:11:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:11:08,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:11:08,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:11:08,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:11:08,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:11:08,703 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 19:11:08,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 19:11:08,711 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 19:11:08,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 19:11:08,725 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 19:11:08,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 19:11:08,743 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 19:11:08,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 19:11:08,781 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-11 19:11:08,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 19:11:08,824 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 19:11:08,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 19:11:08,853 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:11:08,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:11:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:11:08,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562147078] [2021-06-11 19:11:08,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:11:08,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:11:08,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26622878] [2021-06-11 19:11:08,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:11:08,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:11:08,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:11:08,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:11:08,903 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:11:08,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 781 transitions, 27549 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:11:08,904 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:11:08,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:11:08,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:11:21,633 INFO L129 PetriNetUnfolder]: 3966/28053 cut-off events. [2021-06-11 19:11:21,633 INFO L130 PetriNetUnfolder]: For 1210800/1221560 co-relation queries the response was YES. [2021-06-11 19:11:22,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211793 conditions, 28053 events. 3966/28053 cut-off events. For 1210800/1221560 co-relation queries the response was YES. Maximal size of possible extension queue 3560. Compared 521213 event pairs, 2351 based on Foata normal form. 57/27005 useless extension candidates. Maximal degree in co-relation 211644. Up to 5075 conditions per place. [2021-06-11 19:11:22,160 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 279 selfloop transitions, 546 changer transitions 1/842 dead transitions. [2021-06-11 19:11:22,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 842 transitions, 30893 flow [2021-06-11 19:11:22,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:11:22,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:11:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:11:22,161 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:11:22,161 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:11:22,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:11:22,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:11:22,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:11:22,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:11:22,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:11:22,164 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:11:22,164 INFO L185 Difference]: Start difference. First operand has 334 places, 781 transitions, 27549 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:11:22,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 842 transitions, 30893 flow [2021-06-11 19:11:32,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 842 transitions, 29929 flow, removed 85 selfloop flow, removed 4 redundant places. [2021-06-11 19:11:32,081 INFO L241 Difference]: Finished difference. Result has 344 places, 796 transitions, 28339 flow [2021-06-11 19:11:32,082 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=26625, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=531, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=28339, PETRI_PLACES=344, PETRI_TRANSITIONS=796} [2021-06-11 19:11:32,082 INFO L343 CegarLoopForPetriNet]: 50 programPoint places, 294 predicate places. [2021-06-11 19:11:32,082 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 19:11:32,082 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 344 places, 796 transitions, 28339 flow [2021-06-11 19:11:32,082 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 344 places, 796 transitions, 28339 flow [2021-06-11 19:11:32,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 343 places, 796 transitions, 28339 flow [2021-06-11 19:11:36,905 INFO L129 PetriNetUnfolder]: 0/17516 cut-off events. [2021-06-11 19:11:36,905 INFO L130 PetriNetUnfolder]: For 623572/640288 co-relation queries the response was YES. [2021-06-11 19:11:36,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93579 conditions, 17516 events. 0/17516 cut-off events. For 623572/640288 co-relation queries the response was YES. Maximal size of possible extension queue 2261. Compared 357980 event pairs, 0 based on Foata normal form. 298/16626 useless extension candidates. Maximal degree in co-relation 0. Up to 1871 conditions per place. [2021-06-11 19:11:37,370 INFO L151 LiptonReduction]: Number of co-enabled transitions 6150 [2021-06-11 19:11:37,456 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 19:11:37,456 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 19:11:37,456 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5374 [2021-06-11 19:11:37,457 INFO L480 AbstractCegarLoop]: Abstraction has has 343 places, 796 transitions, 28339 flow [2021-06-11 19:11:37,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:11:37,457 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 19:11:37,457 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 19:11:37,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-11 19:11:37,457 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 19:11:37,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 19:11:37,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1421970767, now seen corresponding path program 25 times [2021-06-11 19:11:37,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 19:11:37,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101170518] [2021-06-11 19:11:37,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 19:11:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 19:11:37,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:11:37,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 19:11:37,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 19:11:37,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 19:11:37,483 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 19:11:37,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 19:11:37,492 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-11 19:11:37,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 19:11:37,505 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 19:11:37,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 19:11:37,523 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-06-11 19:11:37,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-11 19:11:37,547 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-11 19:11:37,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-11 19:11:37,577 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-11 19:11:37,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-11 19:11:37,617 INFO L142 QuantifierPusher]: treesize reduction 63, result has 47.5 percent of original size [2021-06-11 19:11:37,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-11 19:11:37,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 19:11:37,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101170518] [2021-06-11 19:11:37,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 19:11:37,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-11 19:11:37,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785141436] [2021-06-11 19:11:37,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-11 19:11:37,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 19:11:37,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-11 19:11:37,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-06-11 19:11:37,657 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2021-06-11 19:11:37,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 796 transitions, 28339 flow. Second operand has 10 states, 10 states have (on average 89.9) internal successors, (899), 10 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:11:37,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 19:11:37,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2021-06-11 19:11:37,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 19:11:51,126 INFO L129 PetriNetUnfolder]: 3965/26556 cut-off events. [2021-06-11 19:11:51,126 INFO L130 PetriNetUnfolder]: For 1261554/1272161 co-relation queries the response was YES. [2021-06-11 19:11:51,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212621 conditions, 26556 events. 3965/26556 cut-off events. For 1261554/1272161 co-relation queries the response was YES. Maximal size of possible extension queue 3396. Compared 484142 event pairs, 2849 based on Foata normal form. 57/25367 useless extension candidates. Maximal degree in co-relation 212468. Up to 5075 conditions per place. [2021-06-11 19:11:51,808 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 311 selfloop transitions, 549 changer transitions 1/877 dead transitions. [2021-06-11 19:11:51,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 877 transitions, 32483 flow [2021-06-11 19:11:51,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-11 19:11:51,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-11 19:11:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2021-06-11 19:11:51,809 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2021-06-11 19:11:51,809 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2021-06-11 19:11:51,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2021-06-11 19:11:51,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 19:11:51,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2021-06-11 19:11:51,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.4) internal successors, (934), 10 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:11:51,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:11:51,811 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 19:11:51,811 INFO L185 Difference]: Start difference. First operand has 343 places, 796 transitions, 28339 flow. Second operand 10 states and 934 transitions. [2021-06-11 19:11:51,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 877 transitions, 32483 flow