/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/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 15:26:10,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 15:26:10,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 15:26:10,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 15:26:10,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 15:26:10,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 15:26:10,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 15:26:10,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 15:26:10,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 15:26:10,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 15:26:10,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 15:26:10,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 15:26:10,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 15:26:10,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 15:26:10,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 15:26:10,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 15:26:10,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 15:26:10,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 15:26:10,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 15:26:10,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 15:26:10,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 15:26:10,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 15:26:10,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 15:26:10,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 15:26:10,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 15:26:10,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 15:26:10,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 15:26:10,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 15:26:10,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 15:26:10,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 15:26:10,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 15:26:10,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 15:26:10,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 15:26:10,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 15:26:10,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 15:26:10,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 15:26:10,069 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 [2021-03-26 15:26:10,086 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 15:26:10,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 15:26:10,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 15:26:10,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 15:26:10,088 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 15:26:10,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 15:26:10,088 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 15:26:10,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 15:26:10,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 15:26:10,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 15:26:10,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 15:26:10,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 15:26:10,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 15:26:10,090 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 15:26:10,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 15:26:10,090 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 15:26:10,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 15:26:10,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 15:26:10,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 15:26:10,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 15:26:10,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 15:26:10,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 15:26:10,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 15:26:10,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 15:26:10,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 15:26:10,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 15:26:10,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 15:26:10,092 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 15:26:10,092 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 15:26:10,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 15:26:10,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 15:26:10,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 15:26:10,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 15:26:10,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 15:26:10,441 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 15:26:10,441 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 15:26:10,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl [2021-03-26 15:26:10,442 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl' [2021-03-26 15:26:10,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 15:26:10,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 15:26:10,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 15:26:10,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 15:26:10,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 15:26:10,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:10" (1/1) ... [2021-03-26 15:26:10,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:10" (1/1) ... [2021-03-26 15:26:10,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 15:26:10,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 15:26:10,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 15:26:10,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 15:26:10,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:10" (1/1) ... [2021-03-26 15:26:10,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:10" (1/1) ... [2021-03-26 15:26:10,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:10" (1/1) ... [2021-03-26 15:26:10,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:10" (1/1) ... [2021-03-26 15:26:10,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:10" (1/1) ... [2021-03-26 15:26:10,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:10" (1/1) ... [2021-03-26 15:26:10,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:10" (1/1) ... [2021-03-26 15:26:10,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 15:26:10,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 15:26:10,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 15:26:10,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 15:26:10,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:10" (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 [2021-03-26 15:26:10,610 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-26 15:26:10,612 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-26 15:26:10,612 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-26 15:26:10,612 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-26 15:26:10,612 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-26 15:26:10,612 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-26 15:26:10,612 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 15:26:10,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 15:26:10,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 15:26:10,613 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-26 15:26:10,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-26 15:26:10,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-26 15:26:10,613 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-26 15:26:10,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-26 15:26:10,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-26 15:26:10,613 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-26 15:26:10,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-26 15:26:10,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-26 15:26:10,614 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-26 15:26:10,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-26 15:26:10,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-26 15:26:10,614 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2021-03-26 15:26:10,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2021-03-26 15:26:10,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2021-03-26 15:26:10,615 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 15:26:10,919 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 15:26:10,919 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 15:26:10,921 INFO L202 PluginConnector]: Adding new model ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:26:10 BoogieIcfgContainer [2021-03-26 15:26:10,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 15:26:10,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 15:26:10,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 15:26:10,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 15:26:10,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 03:26:10" (1/2) ... [2021-03-26 15:26:10,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba5bb19 and model type ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 03:26:10, skipping insertion in model container [2021-03-26 15:26:10,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 03:26:10" (2/2) ... [2021-03-26 15:26:10,927 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-7.wvr.bpl [2021-03-26 15:26:10,936 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 15:26:10,940 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 15:26:10,940 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 15:26:11,091 INFO L149 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2021-03-26 15:26:11,112 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-03-26 15:26:11,144 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 15:26:11,145 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 15:26:11,145 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 15:26:11,145 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 15:26:11,145 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 15:26:11,145 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 15:26:11,145 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 15:26:11,145 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 15:26:11,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 62 transitions, 180 flow [2021-03-26 15:26:11,211 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2021-03-26 15:26:11,212 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-26 15:26:11,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 55 events. 0/55 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 154 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 15:26:11,213 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 62 transitions, 180 flow [2021-03-26 15:26:11,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 53 transitions, 148 flow [2021-03-26 15:26:11,219 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 15:26:11,232 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 53 transitions, 148 flow [2021-03-26 15:26:11,234 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 53 transitions, 148 flow [2021-03-26 15:26:11,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 53 transitions, 148 flow [2021-03-26 15:26:11,253 INFO L129 PetriNetUnfolder]: 0/53 cut-off events. [2021-03-26 15:26:11,253 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-26 15:26:11,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 53 events. 0/53 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 152 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 15:26:11,256 INFO L142 LiptonReduction]: Number of co-enabled transitions 1542 [2021-03-26 15:26:12,786 INFO L154 LiptonReduction]: Checked pairs total: 2297 [2021-03-26 15:26:12,786 INFO L156 LiptonReduction]: Total number of compositions: 21 [2021-03-26 15:26:12,787 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1569 [2021-03-26 15:26:12,800 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-03-26 15:26:12,800 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-26 15:26:12,800 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 15:26:12,801 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, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 15:26:12,801 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 15:26:12,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 15:26:12,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1689739560, now seen corresponding path program 1 times [2021-03-26 15:26:12,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 15:26:12,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366795855] [2021-03-26 15:26:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 15:26:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 15:26:12,988 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-03-26 15:26:12,989 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-03-26 15:26:13,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:26:13,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 15:26:13,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:26:13,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-26 15:26:13,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:26:13,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 15:26:13,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:26:13,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 15:26:13,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:26:13,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 15:26:13,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:26:13,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 15:26:13,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:26:13,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 15:26:13,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:26:13,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-26 15:26:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 15:26:13,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366795855] [2021-03-26 15:26:13,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 15:26:13,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 15:26:13,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345277770] [2021-03-26 15:26:13,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 15:26:13,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 15:26:13,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 15:26:13,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-26 15:26:13,050 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 83 [2021-03-26 15:26:13,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 32 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 52.4) internal successors, (262), 5 states have internal predecessors, (262), 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) [2021-03-26 15:26:13,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 15:26:13,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 83 [2021-03-26 15:26:13,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 15:26:14,996 INFO L129 PetriNetUnfolder]: 15335/20004 cut-off events. [2021-03-26 15:26:14,997 INFO L130 PetriNetUnfolder]: For 392/392 co-relation queries the response was YES. [2021-03-26 15:26:15,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40001 conditions, 20004 events. 15335/20004 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 107733 event pairs, 7502 based on Foata normal form. 1/19911 useless extension candidates. Maximal degree in co-relation 39963. Up to 10206 conditions per place. [2021-03-26 15:26:15,136 INFO L132 encePairwiseOnDemand]: 66/83 looper letters, 33 selfloop transitions, 15 changer transitions 1/64 dead transitions. [2021-03-26 15:26:15,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 268 flow [2021-03-26 15:26:15,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 15:26:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 15:26:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 295 transitions. [2021-03-26 15:26:15,147 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7108433734939759 [2021-03-26 15:26:15,147 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 295 transitions. [2021-03-26 15:26:15,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 295 transitions. [2021-03-26 15:26:15,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 15:26:15,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 295 transitions. [2021-03-26 15:26:15,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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) [2021-03-26 15:26:15,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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) [2021-03-26 15:26:15,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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) [2021-03-26 15:26:15,208 INFO L185 Difference]: Start difference. First operand has 54 places, 32 transitions, 106 flow. Second operand 5 states and 295 transitions. [2021-03-26 15:26:15,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 268 flow [2021-03-26 15:26:15,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 240 flow, removed 0 selfloop flow, removed 14 redundant places. [2021-03-26 15:26:15,244 INFO L241 Difference]: Finished difference. Result has 47 places, 45 transitions, 187 flow [2021-03-26 15:26:15,245 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=187, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2021-03-26 15:26:15,246 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2021-03-26 15:26:15,246 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 15:26:15,246 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 45 transitions, 187 flow [2021-03-26 15:26:15,247 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 45 transitions, 187 flow [2021-03-26 15:26:15,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 45 transitions, 187 flow [2021-03-26 15:26:15,896 INFO L129 PetriNetUnfolder]: 3652/6384 cut-off events. [2021-03-26 15:26:15,896 INFO L130 PetriNetUnfolder]: For 418/430 co-relation queries the response was YES. [2021-03-26 15:26:15,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13411 conditions, 6384 events. 3652/6384 cut-off events. For 418/430 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 50298 event pairs, 2368 based on Foata normal form. 0/5722 useless extension candidates. Maximal degree in co-relation 12666. Up to 4793 conditions per place. [2021-03-26 15:26:15,973 INFO L142 LiptonReduction]: Number of co-enabled transitions 452 [2021-03-26 15:26:16,158 INFO L154 LiptonReduction]: Checked pairs total: 48 [2021-03-26 15:26:16,159 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 15:26:16,159 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 913 [2021-03-26 15:26:16,160 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 187 flow [2021-03-26 15:26:16,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 52.4) internal successors, (262), 5 states have internal predecessors, (262), 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) [2021-03-26 15:26:16,161 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 15:26:16,161 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, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 15:26:16,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 15:26:16,162 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 15:26:16,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 15:26:16,163 INFO L82 PathProgramCache]: Analyzing trace with hash 393493870, now seen corresponding path program 2 times [2021-03-26 15:26:16,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 15:26:16,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713651311] [2021-03-26 15:26:16,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 15:26:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 15:26:16,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:26:16,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 15:26:16,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:26:16,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 15:26:16,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:26:16,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 15:26:16,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:26:16,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 15:26:16,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:26:16,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 15:26:16,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:26:16,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 15:26:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 15:26:16,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713651311] [2021-03-26 15:26:16,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 15:26:16,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-26 15:26:16,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381421347] [2021-03-26 15:26:16,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 15:26:16,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 15:26:16,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 15:26:16,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-26 15:26:16,323 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 83 [2021-03-26 15:26:16,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 187 flow. Second operand has 7 states, 7 states have (on average 42.42857142857143) internal successors, (297), 7 states have internal predecessors, (297), 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) [2021-03-26 15:26:16,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 15:26:16,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 83 [2021-03-26 15:26:16,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 15:26:20,759 INFO L129 PetriNetUnfolder]: 49280/64155 cut-off events. [2021-03-26 15:26:20,759 INFO L130 PetriNetUnfolder]: For 34113/36702 co-relation queries the response was YES. [2021-03-26 15:26:20,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196609 conditions, 64155 events. 49280/64155 cut-off events. For 34113/36702 co-relation queries the response was YES. Maximal size of possible extension queue 3538. Compared 383667 event pairs, 10497 based on Foata normal form. 473/64526 useless extension candidates. Maximal degree in co-relation 195802. Up to 31018 conditions per place. [2021-03-26 15:26:21,352 INFO L132 encePairwiseOnDemand]: 67/83 looper letters, 41 selfloop transitions, 73 changer transitions 0/129 dead transitions. [2021-03-26 15:26:21,353 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 129 transitions, 776 flow [2021-03-26 15:26:21,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 15:26:21,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 15:26:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 366 transitions. [2021-03-26 15:26:21,359 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6299483648881239 [2021-03-26 15:26:21,359 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 366 transitions. [2021-03-26 15:26:21,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 366 transitions. [2021-03-26 15:26:21,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 15:26:21,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 366 transitions. [2021-03-26 15:26:21,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 52.285714285714285) internal successors, (366), 7 states have internal predecessors, (366), 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) [2021-03-26 15:26:21,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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) [2021-03-26 15:26:21,365 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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) [2021-03-26 15:26:21,365 INFO L185 Difference]: Start difference. First operand has 47 places, 45 transitions, 187 flow. Second operand 7 states and 366 transitions. [2021-03-26 15:26:21,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 129 transitions, 776 flow [2021-03-26 15:26:21,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 129 transitions, 720 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-26 15:26:21,379 INFO L241 Difference]: Finished difference. Result has 53 places, 110 transitions, 725 flow [2021-03-26 15:26:21,380 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=725, PETRI_PLACES=53, PETRI_TRANSITIONS=110} [2021-03-26 15:26:21,380 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2021-03-26 15:26:21,380 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 15:26:21,380 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 110 transitions, 725 flow [2021-03-26 15:26:21,381 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 110 transitions, 725 flow [2021-03-26 15:26:21,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 110 transitions, 725 flow [2021-03-26 15:26:23,655 INFO L129 PetriNetUnfolder]: 29469/41000 cut-off events. [2021-03-26 15:26:23,655 INFO L130 PetriNetUnfolder]: For 36908/41895 co-relation queries the response was YES. [2021-03-26 15:26:23,793 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144225 conditions, 41000 events. 29469/41000 cut-off events. For 36908/41895 co-relation queries the response was YES. Maximal size of possible extension queue 2760. Compared 278191 event pairs, 4593 based on Foata normal form. 512/40705 useless extension candidates. Maximal degree in co-relation 142862. Up to 23003 conditions per place. [2021-03-26 15:26:24,203 INFO L142 LiptonReduction]: Number of co-enabled transitions 1070 [2021-03-26 15:31:26,093 INFO L154 LiptonReduction]: Checked pairs total: 69 [2021-03-26 15:31:26,093 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 15:31:26,094 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 304714 [2021-03-26 15:31:26,095 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 110 transitions, 727 flow [2021-03-26 15:31:26,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 42.42857142857143) internal successors, (297), 7 states have internal predecessors, (297), 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) [2021-03-26 15:31:26,095 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 15:31:26,095 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, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 15:31:26,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 15:31:26,095 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 15:31:26,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 15:31:26,096 INFO L82 PathProgramCache]: Analyzing trace with hash 464179424, now seen corresponding path program 3 times [2021-03-26 15:31:26,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 15:31:26,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129591673] [2021-03-26 15:31:26,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 15:31:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 15:31:26,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:31:26,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 15:31:26,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:31:26,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 15:31:26,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:31:26,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 15:31:26,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:31:26,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 15:31:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 15:31:26,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129591673] [2021-03-26 15:31:26,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 15:31:26,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 15:31:26,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857995967] [2021-03-26 15:31:26,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 15:31:26,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 15:31:26,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 15:31:26,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-26 15:31:26,136 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2021-03-26 15:31:26,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 110 transitions, 727 flow. Second operand has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 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) [2021-03-26 15:31:26,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 15:31:26,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2021-03-26 15:31:26,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 15:31:30,245 INFO L129 PetriNetUnfolder]: 50096/65592 cut-off events. [2021-03-26 15:31:30,245 INFO L130 PetriNetUnfolder]: For 86758/100291 co-relation queries the response was YES. [2021-03-26 15:31:30,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 292563 conditions, 65592 events. 50096/65592 cut-off events. For 86758/100291 co-relation queries the response was YES. Maximal size of possible extension queue 3676. Compared 390552 event pairs, 9011 based on Foata normal form. 212/65712 useless extension candidates. Maximal degree in co-relation 291317. Up to 62512 conditions per place. [2021-03-26 15:31:30,809 INFO L132 encePairwiseOnDemand]: 70/84 looper letters, 121 selfloop transitions, 74 changer transitions 0/210 dead transitions. [2021-03-26 15:31:30,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 210 transitions, 1858 flow [2021-03-26 15:31:30,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 15:31:30,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 15:31:30,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 254 transitions. [2021-03-26 15:31:30,810 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6047619047619047 [2021-03-26 15:31:30,811 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 254 transitions. [2021-03-26 15:31:30,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 254 transitions. [2021-03-26 15:31:30,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 15:31:30,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 254 transitions. [2021-03-26 15:31:30,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.8) internal successors, (254), 5 states have internal predecessors, (254), 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) [2021-03-26 15:31:30,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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) [2021-03-26 15:31:30,813 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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) [2021-03-26 15:31:30,813 INFO L185 Difference]: Start difference. First operand has 53 places, 110 transitions, 727 flow. Second operand 5 states and 254 transitions. [2021-03-26 15:31:30,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 210 transitions, 1858 flow [2021-03-26 15:31:30,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 210 transitions, 1782 flow, removed 34 selfloop flow, removed 1 redundant places. [2021-03-26 15:31:30,947 INFO L241 Difference]: Finished difference. Result has 58 places, 176 transitions, 1508 flow [2021-03-26 15:31:30,948 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1508, PETRI_PLACES=58, PETRI_TRANSITIONS=176} [2021-03-26 15:31:30,948 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2021-03-26 15:31:30,948 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 15:31:30,948 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 176 transitions, 1508 flow [2021-03-26 15:31:30,949 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 176 transitions, 1508 flow [2021-03-26 15:31:30,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 176 transitions, 1508 flow [2021-03-26 15:31:33,365 INFO L129 PetriNetUnfolder]: 29873/41251 cut-off events. [2021-03-26 15:31:33,366 INFO L130 PetriNetUnfolder]: For 70573/76046 co-relation queries the response was YES. [2021-03-26 15:31:33,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159979 conditions, 41251 events. 29873/41251 cut-off events. For 70573/76046 co-relation queries the response was YES. Maximal size of possible extension queue 2758. Compared 272564 event pairs, 3800 based on Foata normal form. 873/41757 useless extension candidates. Maximal degree in co-relation 158457. Up to 22654 conditions per place. [2021-03-26 15:31:33,676 INFO L142 LiptonReduction]: Number of co-enabled transitions 1288 [2021-03-26 15:36:50,084 INFO L154 LiptonReduction]: Checked pairs total: 285 [2021-03-26 15:36:50,085 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 15:36:50,085 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 319137 [2021-03-26 15:36:50,085 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 176 transitions, 1514 flow [2021-03-26 15:36:50,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 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) [2021-03-26 15:36:50,086 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 15:36:50,086 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, 1, 1, 1, 1, 1, 1] [2021-03-26 15:36:50,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 15:36:50,086 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-26 15:36:50,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 15:36:50,087 INFO L82 PathProgramCache]: Analyzing trace with hash -999855131, now seen corresponding path program 1 times [2021-03-26 15:36:50,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 15:36:50,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985232726] [2021-03-26 15:36:50,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 15:36:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 15:36:50,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:36:50,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 15:36:50,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:36:50,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 15:36:50,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:36:50,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 15:36:50,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:36:50,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 15:36:50,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:36:50,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 15:36:50,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:36:50,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 15:36:50,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 15:36:50,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 15:36:50,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 15:36:50,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985232726] [2021-03-26 15:36:50,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 15:36:50,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-26 15:36:50,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529882051] [2021-03-26 15:36:50,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 15:36:50,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 15:36:50,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 15:36:50,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-26 15:36:50,136 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 87 [2021-03-26 15:36:50,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 176 transitions, 1514 flow. Second operand has 7 states, 7 states have (on average 42.285714285714285) internal successors, (296), 7 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) [2021-03-26 15:36:50,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 15:36:50,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 87 [2021-03-26 15:36:50,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 15:36:55,524 INFO L129 PetriNetUnfolder]: 54337/71097 cut-off events. [2021-03-26 15:36:55,525 INFO L130 PetriNetUnfolder]: For 168053/187075 co-relation queries the response was YES. [2021-03-26 15:36:55,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 335648 conditions, 71097 events. 54337/71097 cut-off events. For 168053/187075 co-relation queries the response was YES. Maximal size of possible extension queue 4013. Compared 429720 event pairs, 8925 based on Foata normal form. 1308/72312 useless extension candidates. Maximal degree in co-relation 334550. Up to 34343 conditions per place. [2021-03-26 15:36:56,011 INFO L132 encePairwiseOnDemand]: 68/87 looper letters, 42 selfloop transitions, 177 changer transitions 0/234 dead transitions. [2021-03-26 15:36:56,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 234 transitions, 2454 flow [2021-03-26 15:36:56,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 15:36:56,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 15:36:56,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 371 transitions. [2021-03-26 15:36:56,012 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2021-03-26 15:36:56,013 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 371 transitions. [2021-03-26 15:36:56,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 371 transitions. [2021-03-26 15:36:56,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 15:36:56,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 371 transitions. [2021-03-26 15:36:56,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 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) [2021-03-26 15:36:56,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 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) [2021-03-26 15:36:56,015 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 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) [2021-03-26 15:36:56,015 INFO L185 Difference]: Start difference. First operand has 58 places, 176 transitions, 1514 flow. Second operand 7 states and 371 transitions. [2021-03-26 15:36:56,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 234 transitions, 2454 flow [2021-03-26 15:36:56,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 234 transitions, 2446 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 15:36:56,240 INFO L241 Difference]: Finished difference. Result has 64 places, 215 transitions, 2317 flow [2021-03-26 15:36:56,241 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2317, PETRI_PLACES=64, PETRI_TRANSITIONS=215} [2021-03-26 15:36:56,241 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2021-03-26 15:36:56,241 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 15:36:56,241 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 215 transitions, 2317 flow [2021-03-26 15:36:56,241 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 215 transitions, 2317 flow [2021-03-26 15:36:56,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 215 transitions, 2317 flow [2021-03-26 15:36:59,276 INFO L129 PetriNetUnfolder]: 32490/44944 cut-off events. [2021-03-26 15:36:59,277 INFO L130 PetriNetUnfolder]: For 118445/126158 co-relation queries the response was YES. [2021-03-26 15:36:59,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211381 conditions, 44944 events. 32490/44944 cut-off events. For 118445/126158 co-relation queries the response was YES. Maximal size of possible extension queue 2981. Compared 300738 event pairs, 3885 based on Foata normal form. 752/44868 useless extension candidates. Maximal degree in co-relation 209892. Up to 25257 conditions per place. [2021-03-26 15:36:59,780 INFO L142 LiptonReduction]: Number of co-enabled transitions 1374 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown