/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-8.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 05:39:04,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 05:39:04,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 05:39:05,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 05:39:05,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 05:39:05,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 05:39:05,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 05:39:05,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 05:39:05,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 05:39:05,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 05:39:05,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 05:39:05,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 05:39:05,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 05:39:05,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 05:39:05,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 05:39:05,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 05:39:05,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 05:39:05,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 05:39:05,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 05:39:05,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 05:39:05,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 05:39:05,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 05:39:05,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 05:39:05,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 05:39:05,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 05:39:05,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 05:39:05,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 05:39:05,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 05:39:05,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 05:39:05,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 05:39:05,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 05:39:05,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 05:39:05,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 05:39:05,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 05:39:05,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 05:39:05,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 05:39:05,056 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-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 05:39:05,075 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 05:39:05,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 05:39:05,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 05:39:05,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 05:39:05,077 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 05:39:05,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 05:39:05,077 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 05:39:05,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 05:39:05,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 05:39:05,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 05:39:05,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 05:39:05,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 05:39:05,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 05:39:05,078 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 05:39:05,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 05:39:05,079 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 05:39:05,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 05:39:05,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 05:39:05,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 05:39:05,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 05:39:05,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 05:39:05,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 05:39:05,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 05:39:05,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 05:39:05,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 05:39:05,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 05:39:05,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 05:39:05,081 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 05:39:05,081 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 05:39:05,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 05:39:05,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 05:39:05,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 05:39:05,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 05:39:05,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 05:39:05,449 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 05:39:05,450 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 05:39:05,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-8.wvr.bpl [2021-03-26 05:39:05,452 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-8.wvr.bpl' [2021-03-26 05:39:05,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 05:39:05,495 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 05:39:05,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 05:39:05,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 05:39:05,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 05:39:05,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:39:05" (1/1) ... [2021-03-26 05:39:05,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:39:05" (1/1) ... [2021-03-26 05:39:05,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 05:39:05,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 05:39:05,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 05:39:05,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 05:39:05,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:39:05" (1/1) ... [2021-03-26 05:39:05,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:39:05" (1/1) ... [2021-03-26 05:39:05,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:39:05" (1/1) ... [2021-03-26 05:39:05,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:39:05" (1/1) ... [2021-03-26 05:39:05,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:39:05" (1/1) ... [2021-03-26 05:39:05,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:39:05" (1/1) ... [2021-03-26 05:39:05,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:39:05" (1/1) ... [2021-03-26 05:39:05,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 05:39:05,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 05:39:05,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 05:39:05,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 05:39:05,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:39:05" (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 05:39:05,612 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-26 05:39:05,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-26 05:39:05,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-26 05:39:05,613 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-26 05:39:05,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-26 05:39:05,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-26 05:39:05,613 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 05:39:05,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 05:39:05,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 05:39:05,614 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-26 05:39:05,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-26 05:39:05,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-26 05:39:05,614 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-26 05:39:05,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-26 05:39:05,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-26 05:39:05,615 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-26 05:39:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-26 05:39:05,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-26 05:39:05,617 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-26 05:39:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-26 05:39:05,618 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-26 05:39:05,618 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2021-03-26 05:39:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2021-03-26 05:39:05,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2021-03-26 05:39:05,619 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2021-03-26 05:39:05,620 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2021-03-26 05:39:05,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2021-03-26 05:39:05,622 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 05:39:05,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 05:39:05,844 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 05:39:05,846 INFO L202 PluginConnector]: Adding new model ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 05:39:05 BoogieIcfgContainer [2021-03-26 05:39:05,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 05:39:05,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 05:39:05,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 05:39:05,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 05:39:05,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:39:05" (1/2) ... [2021-03-26 05:39:05,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e12d98e and model type ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 05:39:05, skipping insertion in model container [2021-03-26 05:39:05,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 05:39:05" (2/2) ... [2021-03-26 05:39:05,851 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-8.wvr.bpl [2021-03-26 05:39:05,856 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 05:39:05,859 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 05:39:05,860 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 05:39:05,977 INFO L149 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2021-03-26 05:39:05,996 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-03-26 05:39:06,014 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 05:39:06,014 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 05:39:06,014 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 05:39:06,014 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 05:39:06,014 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 05:39:06,015 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 05:39:06,015 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 05:39:06,015 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 05:39:06,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 70 transitions, 204 flow [2021-03-26 05:39:06,065 INFO L129 PetriNetUnfolder]: 0/62 cut-off events. [2021-03-26 05:39:06,065 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-26 05:39:06,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 62 events. 0/62 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 179 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 05:39:06,067 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 70 transitions, 204 flow [2021-03-26 05:39:06,071 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 60 transitions, 168 flow [2021-03-26 05:39:06,072 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:39:06,084 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 60 transitions, 168 flow [2021-03-26 05:39:06,087 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 60 transitions, 168 flow [2021-03-26 05:39:06,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 60 transitions, 168 flow [2021-03-26 05:39:06,110 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-03-26 05:39:06,110 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-26 05:39:06,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 60 events. 0/60 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 178 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 05:39:06,113 INFO L142 LiptonReduction]: Number of co-enabled transitions 2044 [2021-03-26 05:39:07,875 INFO L154 LiptonReduction]: Checked pairs total: 2835 [2021-03-26 05:39:07,876 INFO L156 LiptonReduction]: Total number of compositions: 23 [2021-03-26 05:39:07,877 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1806 [2021-03-26 05:39:07,893 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2021-03-26 05:39:07,893 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-26 05:39:07,894 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:39:07,894 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, 1, 1, 1, 1, 1] [2021-03-26 05:39:07,895 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]=== [2021-03-26 05:39:07,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:39:07,899 INFO L82 PathProgramCache]: Analyzing trace with hash -272022586, now seen corresponding path program 1 times [2021-03-26 05:39:07,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:39:07,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384063740] [2021-03-26 05:39:07,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:39:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:39:08,102 INFO L142 QuantifierPusher]: treesize reduction 17, result has 43.3 percent of original size [2021-03-26 05:39:08,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 05:39:08,120 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-03-26 05:39:08,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-26 05:39:08,128 INFO L142 QuantifierPusher]: treesize reduction 8, result has 42.9 percent of original size [2021-03-26 05:39:08,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-26 05:39:08,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:08,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-26 05:39:08,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:08,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:39:08,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:08,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:39:08,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:08,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:39:08,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:08,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:39:08,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:08,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:39:08,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:08,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-26 05:39:08,154 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 05:39:08,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384063740] [2021-03-26 05:39:08,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:39:08,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 05:39:08,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825619475] [2021-03-26 05:39:08,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 05:39:08,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:39:08,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 05:39:08,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-26 05:39:08,179 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 93 [2021-03-26 05:39:08,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 37 transitions, 122 flow. Second operand has 6 states, 6 states have (on average 58.166666666666664) internal successors, (349), 6 states have internal predecessors, (349), 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 05:39:08,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:39:08,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 93 [2021-03-26 05:39:08,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:39:14,084 INFO L129 PetriNetUnfolder]: 55199/69678 cut-off events. [2021-03-26 05:39:14,084 INFO L130 PetriNetUnfolder]: For 462/462 co-relation queries the response was YES. [2021-03-26 05:39:14,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138232 conditions, 69678 events. 55199/69678 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 3578. Compared 398682 event pairs, 29181 based on Foata normal form. 1/69181 useless extension candidates. Maximal degree in co-relation 138190. Up to 34992 conditions per place. [2021-03-26 05:39:14,624 INFO L132 encePairwiseOnDemand]: 74/93 looper letters, 38 selfloop transitions, 17 changer transitions 1/74 dead transitions. [2021-03-26 05:39:14,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 308 flow [2021-03-26 05:39:14,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 05:39:14,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 05:39:14,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 332 transitions. [2021-03-26 05:39:14,732 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7139784946236559 [2021-03-26 05:39:14,733 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 332 transitions. [2021-03-26 05:39:14,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 332 transitions. [2021-03-26 05:39:14,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:39:14,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 332 transitions. [2021-03-26 05:39:14,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 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 05:39:14,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 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 05:39:14,759 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 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 05:39:14,762 INFO L185 Difference]: Start difference. First operand has 62 places, 37 transitions, 122 flow. Second operand 5 states and 332 transitions. [2021-03-26 05:39:14,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 308 flow [2021-03-26 05:39:14,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 74 transitions, 276 flow, removed 0 selfloop flow, removed 16 redundant places. [2021-03-26 05:39:14,848 INFO L241 Difference]: Finished difference. Result has 53 places, 52 transitions, 214 flow [2021-03-26 05:39:14,850 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2021-03-26 05:39:14,850 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, -9 predicate places. [2021-03-26 05:39:14,850 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:39:14,851 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 52 transitions, 214 flow [2021-03-26 05:39:14,851 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 52 transitions, 214 flow [2021-03-26 05:39:14,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 52 transitions, 214 flow [2021-03-26 05:39:17,158 INFO L129 PetriNetUnfolder]: 15128/23887 cut-off events. [2021-03-26 05:39:17,158 INFO L130 PetriNetUnfolder]: For 2194/2212 co-relation queries the response was YES. [2021-03-26 05:39:17,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53981 conditions, 23887 events. 15128/23887 cut-off events. For 2194/2212 co-relation queries the response was YES. Maximal size of possible extension queue 2315. Compared 195120 event pairs, 8615 based on Foata normal form. 0/22227 useless extension candidates. Maximal degree in co-relation 52863. Up to 19571 conditions per place. [2021-03-26 05:39:17,645 INFO L142 LiptonReduction]: Number of co-enabled transitions 656 [2021-03-26 05:39:23,980 INFO L154 LiptonReduction]: Checked pairs total: 172 [2021-03-26 05:39:23,980 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 05:39:23,980 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9130 [2021-03-26 05:39:23,982 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 214 flow [2021-03-26 05:39:23,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 58.166666666666664) internal successors, (349), 6 states have internal predecessors, (349), 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 05:39:23,983 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:39:23,983 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, 1, 1, 1, 1, 1] [2021-03-26 05:39:23,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 05:39:23,983 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]=== [2021-03-26 05:39:23,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:39:23,984 INFO L82 PathProgramCache]: Analyzing trace with hash 264670664, now seen corresponding path program 2 times [2021-03-26 05:39:23,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:39:23,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347646745] [2021-03-26 05:39:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:39:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:39:24,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:24,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:39:24,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:24,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:39:24,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:24,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:39:24,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:24,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:39:24,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:24,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:39:24,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:24,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:39:24,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:24,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:39:24,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:24,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:39:24,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:24,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:39:24,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:39:24,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 05:39:24,053 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 05:39:24,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347646745] [2021-03-26 05:39:24,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:39:24,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-26 05:39:24,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461798441] [2021-03-26 05:39:24,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 05:39:24,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:39:24,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 05:39:24,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-26 05:39:24,056 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 94 [2021-03-26 05:39:24,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 47.857142857142854) internal successors, (335), 7 states have internal predecessors, (335), 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 05:39:24,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:39:24,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 94 [2021-03-26 05:39:24,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:39:50,971 INFO L129 PetriNetUnfolder]: 270102/335637 cut-off events. [2021-03-26 05:39:50,971 INFO L130 PetriNetUnfolder]: For 202217/215096 co-relation queries the response was YES. [2021-03-26 05:39:51,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1014058 conditions, 335637 events. 270102/335637 cut-off events. For 202217/215096 co-relation queries the response was YES. Maximal size of possible extension queue 13359. Compared 1995008 event pairs, 61938 based on Foata normal form. 2651/338067 useless extension candidates. Maximal degree in co-relation 1011914. Up to 153360 conditions per place. [2021-03-26 05:39:52,974 INFO L132 encePairwiseOnDemand]: 75/94 looper letters, 51 selfloop transitions, 84 changer transitions 0/152 dead transitions. [2021-03-26 05:39:52,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 152 transitions, 905 flow [2021-03-26 05:39:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 05:39:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 05:39:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 422 transitions. [2021-03-26 05:39:52,976 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6413373860182371 [2021-03-26 05:39:52,977 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 422 transitions. [2021-03-26 05:39:52,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 422 transitions. [2021-03-26 05:39:52,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:39:52,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 422 transitions. [2021-03-26 05:39:52,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 60.285714285714285) internal successors, (422), 7 states have internal predecessors, (422), 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 05:39:52,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 94.0) internal successors, (752), 8 states have internal predecessors, (752), 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 05:39:52,980 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 94.0) internal successors, (752), 8 states have internal predecessors, (752), 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 05:39:52,980 INFO L185 Difference]: Start difference. First operand has 53 places, 52 transitions, 214 flow. Second operand 7 states and 422 transitions. [2021-03-26 05:39:52,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 152 transitions, 905 flow [2021-03-26 05:39:53,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 152 transitions, 842 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-26 05:39:53,105 INFO L241 Difference]: Finished difference. Result has 59 places, 127 transitions, 835 flow [2021-03-26 05:39:53,105 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=835, PETRI_PLACES=59, PETRI_TRANSITIONS=127} [2021-03-26 05:39:53,106 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, -3 predicate places. [2021-03-26 05:39:53,106 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:39:53,106 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 127 transitions, 835 flow [2021-03-26 05:39:53,106 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 127 transitions, 835 flow [2021-03-26 05:39:53,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 127 transitions, 835 flow [2021-03-26 05:40:04,268 INFO L129 PetriNetUnfolder]: 120915/158344 cut-off events. [2021-03-26 05:40:04,268 INFO L130 PetriNetUnfolder]: For 157176/175119 co-relation queries the response was YES. [2021-03-26 05:40:04,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 565089 conditions, 158344 events. 120915/158344 cut-off events. For 157176/175119 co-relation queries the response was YES. Maximal size of possible extension queue 8810. Compared 1070730 event pairs, 22280 based on Foata normal form. 2567/157730 useless extension candidates. Maximal degree in co-relation 561650. Up to 88192 conditions per place. [2021-03-26 05:40:06,132 INFO L142 LiptonReduction]: Number of co-enabled transitions 1632 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown