/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 09:55:03,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 09:55:03,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 09:55:03,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 09:55:03,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 09:55:03,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 09:55:03,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 09:55:03,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 09:55:03,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 09:55:03,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 09:55:03,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 09:55:03,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 09:55:03,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 09:55:03,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 09:55:03,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 09:55:03,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 09:55:03,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 09:55:03,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 09:55:03,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 09:55:03,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 09:55:03,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 09:55:03,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 09:55:03,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 09:55:03,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 09:55:03,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 09:55:03,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 09:55:03,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 09:55:03,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 09:55:03,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 09:55:03,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 09:55:03,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 09:55:03,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 09:55:03,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 09:55:03,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 09:55:03,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 09:55:03,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 09:55:03,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 09:55:03,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 09:55:03,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 09:55:03,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 09:55:03,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 09:55:03,985 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-RepeatedVariableLbe.epf [2021-03-25 09:55:04,021 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 09:55:04,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 09:55:04,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 09:55:04,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 09:55:04,025 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 09:55:04,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 09:55:04,025 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 09:55:04,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 09:55:04,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 09:55:04,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 09:55:04,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 09:55:04,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 09:55:04,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 09:55:04,027 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 09:55:04,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 09:55:04,027 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 09:55:04,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 09:55:04,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 09:55:04,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 09:55:04,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 09:55:04,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 09:55:04,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 09:55:04,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 09:55:04,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 09:55:04,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 09:55:04,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 09:55:04,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 09:55:04,029 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 09:55:04,029 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 09:55:04,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 09:55:04,029 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 09:55:04,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 09:55:04,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 09:55:04,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 09:55:04,375 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 09:55:04,376 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 09:55:04,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl [2021-03-25 09:55:04,377 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl' [2021-03-25 09:55:04,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 09:55:04,407 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 09:55:04,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 09:55:04,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 09:55:04,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 09:55:04,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:55:04" (1/1) ... [2021-03-25 09:55:04,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:55:04" (1/1) ... [2021-03-25 09:55:04,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 09:55:04,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 09:55:04,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 09:55:04,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 09:55:04,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:55:04" (1/1) ... [2021-03-25 09:55:04,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:55:04" (1/1) ... [2021-03-25 09:55:04,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:55:04" (1/1) ... [2021-03-25 09:55:04,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:55:04" (1/1) ... [2021-03-25 09:55:04,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:55:04" (1/1) ... [2021-03-25 09:55:04,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:55:04" (1/1) ... [2021-03-25 09:55:04,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:55:04" (1/1) ... [2021-03-25 09:55:04,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 09:55:04,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 09:55:04,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 09:55:04,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 09:55:04,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:55:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 09:55:04,524 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 09:55:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 09:55:04,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 09:55:04,524 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 09:55:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 09:55:04,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 09:55:04,525 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 09:55:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 09:55:04,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 09:55:04,525 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 09:55:04,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 09:55:04,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 09:55:04,526 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-25 09:55:04,526 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-25 09:55:04,526 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-25 09:55:04,526 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-25 09:55:04,526 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-25 09:55:04,527 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-25 09:55:04,527 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-25 09:55:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-25 09:55:04,527 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-25 09:55:04,528 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 09:55:04,830 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 09:55:04,830 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 09:55:04,831 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:55:04 BoogieIcfgContainer [2021-03-25 09:55:04,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 09:55:04,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 09:55:04,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 09:55:04,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 09:55:04,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:55:04" (1/2) ... [2021-03-25 09:55:04,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751718ce and model type ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 09:55:04, skipping insertion in model container [2021-03-25 09:55:04,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:55:04" (2/2) ... [2021-03-25 09:55:04,837 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-6.wvr.bpl [2021-03-25 09:55:04,842 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 09:55:04,861 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 09:55:04,862 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 09:55:04,972 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-03-25 09:55:04,990 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-25 09:55:05,024 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 09:55:05,024 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 09:55:05,024 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 09:55:05,024 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 09:55:05,024 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 09:55:05,024 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 09:55:05,024 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 09:55:05,025 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 09:55:05,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 54 transitions, 156 flow [2021-03-25 09:55:05,086 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-25 09:55:05,087 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 09:55:05,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 48 events. 0/48 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 09:55:05,088 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 54 transitions, 156 flow [2021-03-25 09:55:05,094 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 46 transitions, 128 flow [2021-03-25 09:55:05,095 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:55:05,104 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 46 transitions, 128 flow [2021-03-25 09:55:05,108 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 46 transitions, 128 flow [2021-03-25 09:55:05,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 46 transitions, 128 flow [2021-03-25 09:55:05,134 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2021-03-25 09:55:05,135 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 09:55:05,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 46 events. 0/46 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 09:55:05,138 INFO L142 LiptonReduction]: Number of co-enabled transitions 1110 [2021-03-25 09:55:05,233 INFO L154 LiptonReduction]: Checked pairs total: 2334 [2021-03-25 09:55:05,234 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 09:55:05,236 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 142 [2021-03-25 09:55:05,263 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-25 09:55:05,263 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 09:55:05,264 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:55:05,264 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, 1, 1] [2021-03-25 09:55:05,265 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 09:55:05,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:55:05,272 INFO L82 PathProgramCache]: Analyzing trace with hash -470091180, now seen corresponding path program 1 times [2021-03-25 09:55:05,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:55:05,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294579783] [2021-03-25 09:55:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:55:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:55:05,557 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-03-25 09:55:05,558 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-03-25 09:55:05,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:55:05,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:55:05,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:55:05,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:55:05,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:55:05,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:55:05,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:55:05,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 09:55:05,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:55:05,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:55:05,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:55:05,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:55:05,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:55:05,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 09:55:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:55:05,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294579783] [2021-03-25 09:55:05,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:55:05,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 09:55:05,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783805917] [2021-03-25 09:55:05,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:55:05,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:55:05,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:55:05,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:55:05,616 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 61 [2021-03-25 09:55:05,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 39 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 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) [2021-03-25 09:55:05,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:55:05,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 61 [2021-03-25 09:55:05,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:55:06,460 INFO L129 PetriNetUnfolder]: 4087/7012 cut-off events. [2021-03-25 09:55:06,460 INFO L130 PetriNetUnfolder]: For 374/374 co-relation queries the response was YES. [2021-03-25 09:55:06,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12888 conditions, 7012 events. 4087/7012 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 53153 event pairs, 1830 based on Foata normal form. 1/6921 useless extension candidates. Maximal degree in co-relation 12854. Up to 2916 conditions per place. [2021-03-25 09:55:06,516 INFO L132 encePairwiseOnDemand]: 46/61 looper letters, 28 selfloop transitions, 13 changer transitions 1/66 dead transitions. [2021-03-25 09:55:06,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 252 flow [2021-03-25 09:55:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:55:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:55:06,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 263 transitions. [2021-03-25 09:55:06,532 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8622950819672132 [2021-03-25 09:55:06,532 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 263 transitions. [2021-03-25 09:55:06,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 263 transitions. [2021-03-25 09:55:06,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:55:06,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 263 transitions. [2021-03-25 09:55:06,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 52.6) internal successors, (263), 5 states have internal predecessors, (263), 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) [2021-03-25 09:55:06,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 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) [2021-03-25 09:55:06,560 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 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) [2021-03-25 09:55:06,562 INFO L185 Difference]: Start difference. First operand has 58 places, 39 transitions, 114 flow. Second operand 5 states and 263 transitions. [2021-03-25 09:55:06,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 252 flow [2021-03-25 09:55:06,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 66 transitions, 228 flow, removed 0 selfloop flow, removed 12 redundant places. [2021-03-25 09:55:06,608 INFO L241 Difference]: Finished difference. Result has 53 places, 50 transitions, 184 flow [2021-03-25 09:55:06,609 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2021-03-25 09:55:06,610 INFO L343 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2021-03-25 09:55:06,611 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:55:06,611 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 50 transitions, 184 flow [2021-03-25 09:55:06,612 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 50 transitions, 184 flow [2021-03-25 09:55:06,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 50 transitions, 184 flow [2021-03-25 09:55:06,823 INFO L129 PetriNetUnfolder]: 1016/2386 cut-off events. [2021-03-25 09:55:06,824 INFO L130 PetriNetUnfolder]: For 139/143 co-relation queries the response was YES. [2021-03-25 09:55:06,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4495 conditions, 2386 events. 1016/2386 cut-off events. For 139/143 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 20689 event pairs, 637 based on Foata normal form. 0/2173 useless extension candidates. Maximal degree in co-relation 4329. Up to 1367 conditions per place. [2021-03-25 09:55:06,863 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 09:55:07,471 INFO L154 LiptonReduction]: Checked pairs total: 115 [2021-03-25 09:55:07,472 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:55:07,472 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 861 [2021-03-25 09:55:07,473 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 184 flow [2021-03-25 09:55:07,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 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) [2021-03-25 09:55:07,473 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:55:07,473 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, 1, 1] [2021-03-25 09:55:07,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 09:55:07,474 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 09:55:07,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:55:07,474 INFO L82 PathProgramCache]: Analyzing trace with hash 550590806, now seen corresponding path program 2 times [2021-03-25 09:55:07,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:55:07,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322006200] [2021-03-25 09:55:07,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:55:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:55:07,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:55:07,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:55:07,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:55:07,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:55:07,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:55:07,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:55:07,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:55:07,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:55:07,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:55:07,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:55:07,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:55:07,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:55:07,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:55:07,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:55:07,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:55:07,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:55:07,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:55:07,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322006200] [2021-03-25 09:55:07,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:55:07,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 09:55:07,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118968155] [2021-03-25 09:55:07,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 09:55:07,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:55:07,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 09:55:07,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-25 09:55:07,549 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 61 [2021-03-25 09:55:07,550 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 184 flow. Second operand has 9 states, 9 states have (on average 37.111111111111114) internal successors, (334), 9 states have internal predecessors, (334), 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) [2021-03-25 09:55:07,550 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:55:07,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 61 [2021-03-25 09:55:07,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:55:15,730 INFO L129 PetriNetUnfolder]: 62582/92227 cut-off events. [2021-03-25 09:55:15,730 INFO L130 PetriNetUnfolder]: For 11788/12229 co-relation queries the response was YES. [2021-03-25 09:55:16,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203691 conditions, 92227 events. 62582/92227 cut-off events. For 11788/12229 co-relation queries the response was YES. Maximal size of possible extension queue 5818. Compared 773541 event pairs, 16548 based on Foata normal form. 46/82358 useless extension candidates. Maximal degree in co-relation 202815. Up to 27753 conditions per place. [2021-03-25 09:55:16,633 INFO L132 encePairwiseOnDemand]: 47/61 looper letters, 58 selfloop transitions, 67 changer transitions 0/150 dead transitions. [2021-03-25 09:55:16,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 150 transitions, 694 flow [2021-03-25 09:55:16,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 09:55:16,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 09:55:16,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 441 transitions. [2021-03-25 09:55:16,636 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8032786885245902 [2021-03-25 09:55:16,636 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 441 transitions. [2021-03-25 09:55:16,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 441 transitions. [2021-03-25 09:55:16,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:55:16,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 441 transitions. [2021-03-25 09:55:16,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 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) [2021-03-25 09:55:16,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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) [2021-03-25 09:55:16,642 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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) [2021-03-25 09:55:16,642 INFO L185 Difference]: Start difference. First operand has 53 places, 50 transitions, 184 flow. Second operand 9 states and 441 transitions. [2021-03-25 09:55:16,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 150 transitions, 694 flow [2021-03-25 09:55:16,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 150 transitions, 672 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-25 09:55:16,684 INFO L241 Difference]: Finished difference. Result has 59 places, 115 transitions, 528 flow [2021-03-25 09:55:16,684 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=528, PETRI_PLACES=59, PETRI_TRANSITIONS=115} [2021-03-25 09:55:16,684 INFO L343 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2021-03-25 09:55:16,685 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:55:16,685 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 115 transitions, 528 flow [2021-03-25 09:55:16,686 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 115 transitions, 528 flow [2021-03-25 09:55:16,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 115 transitions, 528 flow [2021-03-25 09:55:18,501 INFO L129 PetriNetUnfolder]: 16247/26783 cut-off events. [2021-03-25 09:55:18,501 INFO L130 PetriNetUnfolder]: For 2092/2182 co-relation queries the response was YES. [2021-03-25 09:55:18,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55939 conditions, 26783 events. 16247/26783 cut-off events. For 2092/2182 co-relation queries the response was YES. Maximal size of possible extension queue 2232. Compared 240338 event pairs, 5786 based on Foata normal form. 0/23607 useless extension candidates. Maximal degree in co-relation 55289. Up to 9209 conditions per place. [2021-03-25 09:55:18,881 INFO L142 LiptonReduction]: Number of co-enabled transitions 2878 [2021-03-25 09:57:43,053 INFO L154 LiptonReduction]: Checked pairs total: 741 [2021-03-25 09:57:43,053 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:57:43,053 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 146368 [2021-03-25 09:57:43,054 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 115 transitions, 528 flow [2021-03-25 09:57:43,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 37.111111111111114) internal successors, (334), 9 states have internal predecessors, (334), 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) [2021-03-25 09:57:43,054 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:57:43,054 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, 1, 1] [2021-03-25 09:57:43,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 09:57:43,055 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 09:57:43,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:57:43,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1162804018, now seen corresponding path program 3 times [2021-03-25 09:57:43,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:57:43,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696716958] [2021-03-25 09:57:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:57:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:57:43,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:57:43,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:57:43,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:57:43,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:57:43,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:57:43,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:57:43,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:57:43,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:57:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:57:43,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696716958] [2021-03-25 09:57:43,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:57:43,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:57:43,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137421226] [2021-03-25 09:57:43,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:57:43,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:57:43,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:57:43,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:57:43,093 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 61 [2021-03-25 09:57:43,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 115 transitions, 528 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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) [2021-03-25 09:57:43,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:57:43,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 61 [2021-03-25 09:57:43,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:57:50,415 INFO L129 PetriNetUnfolder]: 61125/92060 cut-off events. [2021-03-25 09:57:50,415 INFO L130 PetriNetUnfolder]: For 43490/49809 co-relation queries the response was YES. [2021-03-25 09:57:50,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 248094 conditions, 92060 events. 61125/92060 cut-off events. For 43490/49809 co-relation queries the response was YES. Maximal size of possible extension queue 5565. Compared 782572 event pairs, 15960 based on Foata normal form. 1501/87038 useless extension candidates. Maximal degree in co-relation 244850. Up to 63653 conditions per place. [2021-03-25 09:57:51,195 INFO L132 encePairwiseOnDemand]: 47/61 looper letters, 128 selfloop transitions, 69 changer transitions 0/222 dead transitions. [2021-03-25 09:57:51,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 222 transitions, 1425 flow [2021-03-25 09:57:51,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:57:51,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:57:51,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 234 transitions. [2021-03-25 09:57:51,196 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7672131147540984 [2021-03-25 09:57:51,197 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 234 transitions. [2021-03-25 09:57:51,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 234 transitions. [2021-03-25 09:57:51,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:57:51,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 234 transitions. [2021-03-25 09:57:51,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 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) [2021-03-25 09:57:51,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 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) [2021-03-25 09:57:51,199 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 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) [2021-03-25 09:57:51,199 INFO L185 Difference]: Start difference. First operand has 59 places, 115 transitions, 528 flow. Second operand 5 states and 234 transitions. [2021-03-25 09:57:51,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 222 transitions, 1425 flow [2021-03-25 09:57:51,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 222 transitions, 1251 flow, removed 80 selfloop flow, removed 2 redundant places. [2021-03-25 09:57:51,352 INFO L241 Difference]: Finished difference. Result has 63 places, 171 transitions, 949 flow [2021-03-25 09:57:51,353 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=949, PETRI_PLACES=63, PETRI_TRANSITIONS=171} [2021-03-25 09:57:51,353 INFO L343 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2021-03-25 09:57:51,353 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:57:51,353 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 171 transitions, 949 flow [2021-03-25 09:57:51,353 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 171 transitions, 949 flow [2021-03-25 09:57:51,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 171 transitions, 949 flow [2021-03-25 09:57:52,878 INFO L129 PetriNetUnfolder]: 16831/27654 cut-off events. [2021-03-25 09:57:52,878 INFO L130 PetriNetUnfolder]: For 5288/8490 co-relation queries the response was YES. [2021-03-25 09:57:52,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62343 conditions, 27654 events. 16831/27654 cut-off events. For 5288/8490 co-relation queries the response was YES. Maximal size of possible extension queue 2101. Compared 243742 event pairs, 5126 based on Foata normal form. 647/25587 useless extension candidates. Maximal degree in co-relation 61536. Up to 8650 conditions per place. [2021-03-25 09:57:53,139 INFO L142 LiptonReduction]: Number of co-enabled transitions 4042 [2021-03-25 10:05:05,077 INFO L154 LiptonReduction]: Checked pairs total: 3323 [2021-03-25 10:05:05,078 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 10:05:05,078 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 433725 [2021-03-25 10:05:05,079 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 171 transitions, 951 flow [2021-03-25 10:05:05,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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) [2021-03-25 10:05:05,079 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 10:05:05,079 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, 1, 1] [2021-03-25 10:05:05,079 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 10:05:05,080 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-25 10:05:05,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 10:05:05,080 INFO L82 PathProgramCache]: Analyzing trace with hash 209484656, now seen corresponding path program 4 times [2021-03-25 10:05:05,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 10:05:05,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330993844] [2021-03-25 10:05:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 10:05:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 10:05:05,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 10:05:05,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 10:05:05,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 10:05:05,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 10:05:05,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 10:05:05,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 10:05:05,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 10:05:05,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 10:05:05,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 10:05:05,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 10:05:05,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 10:05:05,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 10:05:05,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 10:05:05,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 10:05:05,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 10:05:05,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330993844] [2021-03-25 10:05:05,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 10:05:05,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 10:05:05,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548202451] [2021-03-25 10:05:05,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 10:05:05,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 10:05:05,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 10:05:05,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-25 10:05:05,134 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 62 [2021-03-25 10:05:05,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 171 transitions, 951 flow. Second operand has 8 states, 8 states have (on average 37.375) internal successors, (299), 8 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 10:05:05,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 10:05:05,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 62 [2021-03-25 10:05:05,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 10:05:16,406 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([159] L30-->thread1EXIT: Formula: (= (+ v_s_29 1) v_s_28) InVars {s=v_s_29} OutVars{s=v_s_28} AuxVars[] AssignedVars[s][213], [Black: 96#(and (<= (+ s 5) t) (<= (+ s 5) m5)), 99#true, 36#L78true, 7#L102true, 8#L65true, Black: 102#(<= (+ s 1) t), Black: 105#(and (<= (+ s 1) t) (<= (+ s 1) m6)), 45#thread2EXITtrue, 16#thread1EXITtrue, 113#(<= (+ s 2) t), Black: 81#(not b), 91#(<= (+ s 3) t), 28#L54true, 31#L89true]) [2021-03-25 10:05:16,407 INFO L384 tUnfolder$Statistics]: this new event has 26 ancestors and is cut-off event [2021-03-25 10:05:16,407 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-25 10:05:16,407 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-25 10:05:16,407 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-25 10:05:17,587 INFO L129 PetriNetUnfolder]: 82359/122275 cut-off events. [2021-03-25 10:05:17,587 INFO L130 PetriNetUnfolder]: For 100584/107696 co-relation queries the response was YES. [2021-03-25 10:05:18,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 349311 conditions, 122275 events. 82359/122275 cut-off events. For 100584/107696 co-relation queries the response was YES. Maximal size of possible extension queue 7608. Compared 1060521 event pairs, 20457 based on Foata normal form. 2834/113256 useless extension candidates. Maximal degree in co-relation 348103. Up to 35708 conditions per place. [2021-03-25 10:05:18,560 INFO L132 encePairwiseOnDemand]: 47/62 looper letters, 81 selfloop transitions, 174 changer transitions 0/280 dead transitions. [2021-03-25 10:05:18,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 280 transitions, 1995 flow [2021-03-25 10:05:18,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 10:05:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 10:05:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 394 transitions. [2021-03-25 10:05:18,562 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7943548387096774 [2021-03-25 10:05:18,563 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 394 transitions. [2021-03-25 10:05:18,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 394 transitions. [2021-03-25 10:05:18,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 10:05:18,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 394 transitions. [2021-03-25 10:05:18,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 49.25) internal successors, (394), 8 states have internal predecessors, (394), 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) [2021-03-25 10:05:18,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 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) [2021-03-25 10:05:18,566 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 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) [2021-03-25 10:05:18,566 INFO L185 Difference]: Start difference. First operand has 63 places, 171 transitions, 951 flow. Second operand 8 states and 394 transitions. [2021-03-25 10:05:18,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 280 transitions, 1995 flow [2021-03-25 10:05:18,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 280 transitions, 1988 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 10:05:18,756 INFO L241 Difference]: Finished difference. Result has 72 places, 246 transitions, 1965 flow [2021-03-25 10:05:18,757 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1965, PETRI_PLACES=72, PETRI_TRANSITIONS=246} [2021-03-25 10:05:18,757 INFO L343 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2021-03-25 10:05:18,757 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 10:05:18,757 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 246 transitions, 1965 flow [2021-03-25 10:05:18,758 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 246 transitions, 1965 flow [2021-03-25 10:05:18,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 246 transitions, 1965 flow [2021-03-25 10:05:21,018 INFO L129 PetriNetUnfolder]: 20929/34513 cut-off events. [2021-03-25 10:05:21,018 INFO L130 PetriNetUnfolder]: For 35756/54979 co-relation queries the response was YES. [2021-03-25 10:05:21,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101856 conditions, 34513 events. 20929/34513 cut-off events. For 35756/54979 co-relation queries the response was YES. Maximal size of possible extension queue 2664. Compared 312637 event pairs, 4675 based on Foata normal form. 2464/33636 useless extension candidates. Maximal degree in co-relation 100894. Up to 9999 conditions per place. [2021-03-25 10:05:21,389 INFO L142 LiptonReduction]: Number of co-enabled transitions 5934 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown