/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 20:35:36,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 20:35:36,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 20:35:37,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 20:35:37,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 20:35:37,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 20:35:37,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 20:35:37,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 20:35:37,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 20:35:37,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 20:35:37,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 20:35:37,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 20:35:37,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 20:35:37,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 20:35:37,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 20:35:37,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 20:35:37,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 20:35:37,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 20:35:37,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 20:35:37,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 20:35:37,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 20:35:37,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 20:35:37,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 20:35:37,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 20:35:37,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-11 20:35:37,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 20:35:37,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 20:35:37,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 20:35:37,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-06-11 20:35:37,092 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 20:35:37,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 20:35:37,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 20:35:37,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 20:35:37,095 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 20:35:37,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 20:35:37,095 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 20:35:37,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 20:35:37,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 20:35:37,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 20:35:37,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 20:35:37,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 20:35:37,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 20:35:37,097 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 20:35:37,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 20:35:37,097 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 20:35:37,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 20:35:37,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 20:35:37,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 20:35:37,098 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 20:35:37,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 20:35:37,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 20:35:37,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 20:35:37,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 20:35:37,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 20:35:37,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 20:35:37,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 20:35:37,100 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-06-11 20:35:37,100 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 20:35:37,100 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 20:35:37,100 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 20:35:37,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 20:35:37,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 20:35:37,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 20:35:37,399 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 20:35:37,400 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 20:35:37,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-06-11 20:35:37,401 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-06-11 20:35:37,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 20:35:37,444 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 20:35:37,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 20:35:37,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 20:35:37,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 20:35:37,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 08:35:37" (1/1) ... [2021-06-11 20:35:37,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 08:35:37" (1/1) ... [2021-06-11 20:35:37,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 20:35:37,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 20:35:37,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 20:35:37,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 20:35:37,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 08:35:37" (1/1) ... [2021-06-11 20:35:37,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 08:35:37" (1/1) ... [2021-06-11 20:35:37,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 08:35:37" (1/1) ... [2021-06-11 20:35:37,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 08:35:37" (1/1) ... [2021-06-11 20:35:37,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 08:35:37" (1/1) ... [2021-06-11 20:35:37,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 08:35:37" (1/1) ... [2021-06-11 20:35:37,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 08:35:37" (1/1) ... [2021-06-11 20:35:37,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 20:35:37,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 20:35:37,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 20:35:37,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 20:35:37,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 08:35:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 20:35:37,573 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-11 20:35:37,575 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-11 20:35:37,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-11 20:35:37,575 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-11 20:35:37,575 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-11 20:35:37,576 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-11 20:35:37,576 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 20:35:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 20:35:37,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 20:35:37,576 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-11 20:35:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-11 20:35:37,576 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-11 20:35:37,576 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-11 20:35:37,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-11 20:35:37,577 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-11 20:35:37,577 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-11 20:35:37,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-11 20:35:37,577 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-11 20:35:37,578 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-06-11 20:35:37,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-06-11 20:35:37,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-06-11 20:35:37,579 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 20:35:37,807 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 20:35:37,807 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-11 20:35:37,808 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 08:35:37 BoogieIcfgContainer [2021-06-11 20:35:37,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 20:35:37,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 20:35:37,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 20:35:37,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 20:35:37,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 08:35:37" (1/2) ... [2021-06-11 20:35:37,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15187010 and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 08:35:37, skipping insertion in model container [2021-06-11 20:35:37,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 08:35:37" (2/2) ... [2021-06-11 20:35:37,815 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-06-11 20:35:37,819 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 20:35:37,823 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 20:35:37,823 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 20:35:37,971 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-06-11 20:35:37,995 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-06-11 20:35:38,022 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 20:35:38,022 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 20:35:38,022 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 20:35:38,022 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 20:35:38,022 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 20:35:38,022 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 20:35:38,022 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 20:35:38,022 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 20:35:38,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 65 transitions, 202 flow [2021-06-11 20:35:38,081 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-06-11 20:35:38,081 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-11 20:35:38,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 53 events. 4/53 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-06-11 20:35:38,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 65 transitions, 202 flow [2021-06-11 20:35:38,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 51 transitions, 150 flow [2021-06-11 20:35:38,092 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:35:38,111 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 51 transitions, 150 flow [2021-06-11 20:35:38,114 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 51 transitions, 150 flow [2021-06-11 20:35:38,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 51 transitions, 150 flow [2021-06-11 20:35:38,140 INFO L129 PetriNetUnfolder]: 4/51 cut-off events. [2021-06-11 20:35:38,140 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-11 20:35:38,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 51 events. 4/51 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-06-11 20:35:38,144 INFO L151 LiptonReduction]: Number of co-enabled transitions 1336 [2021-06-11 20:35:38,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:38,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:38,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:38,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:38,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:38,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:38,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:38,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:38,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:38,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:38,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:38,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:38,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:38,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:38,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:38,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:38,580 INFO L163 LiptonReduction]: Checked pairs total: 1358 [2021-06-11 20:35:38,580 INFO L165 LiptonReduction]: Total number of compositions: 13 [2021-06-11 20:35:38,583 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 492 [2021-06-11 20:35:38,616 INFO L129 PetriNetUnfolder]: 4/37 cut-off events. [2021-06-11 20:35:38,616 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-11 20:35:38,616 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:35:38,617 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] [2021-06-11 20:35:38,617 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:35:38,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:35:38,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1729675932, now seen corresponding path program 1 times [2021-06-11 20:35:38,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:35:38,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514272739] [2021-06-11 20:35:38,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:35:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:35:38,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:38,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:38,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:38,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-11 20:35:38,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:38,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:35:38,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514272739] [2021-06-11 20:35:38,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:35:38,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 20:35:38,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475206408] [2021-06-11 20:35:38,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 20:35:38,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:35:38,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 20:35:38,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 20:35:38,784 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 82 [2021-06-11 20:35:38,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:38,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:35:38,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 82 [2021-06-11 20:35:38,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:35:38,814 INFO L129 PetriNetUnfolder]: 6/43 cut-off events. [2021-06-11 20:35:38,814 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-06-11 20:35:38,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 43 events. 6/43 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 1 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2021-06-11 20:35:38,817 INFO L132 encePairwiseOnDemand]: 79/82 looper letters, 2 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2021-06-11 20:35:38,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 38 transitions, 132 flow [2021-06-11 20:35:38,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 20:35:38,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 20:35:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-06-11 20:35:38,830 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9227642276422764 [2021-06-11 20:35:38,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-06-11 20:35:38,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-06-11 20:35:38,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:35:38,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-06-11 20:35:38,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:38,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:38,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:38,850 INFO L185 Difference]: Start difference. First operand has 53 places, 38 transitions, 124 flow. Second operand 3 states and 227 transitions. [2021-06-11 20:35:38,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 38 transitions, 132 flow [2021-06-11 20:35:38,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 97 flow, removed 0 selfloop flow, removed 13 redundant places. [2021-06-11 20:35:38,857 INFO L241 Difference]: Finished difference. Result has 43 places, 38 transitions, 97 flow [2021-06-11 20:35:38,860 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2021-06-11 20:35:38,862 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2021-06-11 20:35:38,862 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:35:38,863 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 38 transitions, 97 flow [2021-06-11 20:35:38,864 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 38 transitions, 97 flow [2021-06-11 20:35:38,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 38 transitions, 97 flow [2021-06-11 20:35:38,877 INFO L129 PetriNetUnfolder]: 4/38 cut-off events. [2021-06-11 20:35:38,878 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-11 20:35:38,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 38 events. 4/38 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2021-06-11 20:35:38,880 INFO L151 LiptonReduction]: Number of co-enabled transitions 668 [2021-06-11 20:35:38,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:38,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:38,930 INFO L163 LiptonReduction]: Checked pairs total: 768 [2021-06-11 20:35:38,930 INFO L165 LiptonReduction]: Total number of compositions: 1 [2021-06-11 20:35:38,930 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 68 [2021-06-11 20:35:38,931 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 95 flow [2021-06-11 20:35:38,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:38,932 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:35:38,933 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] [2021-06-11 20:35:38,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 20:35:38,936 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:35:38,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:35:38,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2133907847, now seen corresponding path program 1 times [2021-06-11 20:35:38,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:35:38,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471659402] [2021-06-11 20:35:38,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:35:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:35:38,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:38,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:38,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:38,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-11 20:35:38,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:38,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:35:38,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471659402] [2021-06-11 20:35:38,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:35:38,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 20:35:38,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137150392] [2021-06-11 20:35:38,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 20:35:38,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:35:38,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 20:35:38,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 20:35:38,993 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 83 [2021-06-11 20:35:38,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:38,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:35:38,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 83 [2021-06-11 20:35:38,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:35:39,015 INFO L129 PetriNetUnfolder]: 6/42 cut-off events. [2021-06-11 20:35:39,015 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-11 20:35:39,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 42 events. 6/42 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 1 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 49. Up to 6 conditions per place. [2021-06-11 20:35:39,017 INFO L132 encePairwiseOnDemand]: 80/83 looper letters, 2 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2021-06-11 20:35:39,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 103 flow [2021-06-11 20:35:39,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 20:35:39,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 20:35:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2021-06-11 20:35:39,022 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9236947791164659 [2021-06-11 20:35:39,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2021-06-11 20:35:39,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2021-06-11 20:35:39,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:35:39,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2021-06-11 20:35:39,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:39,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 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) [2021-06-11 20:35:39,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 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) [2021-06-11 20:35:39,036 INFO L185 Difference]: Start difference. First operand has 42 places, 37 transitions, 95 flow. Second operand 3 states and 230 transitions. [2021-06-11 20:35:39,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 103 flow [2021-06-11 20:35:39,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 99 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 20:35:39,037 INFO L241 Difference]: Finished difference. Result has 43 places, 37 transitions, 99 flow [2021-06-11 20:35:39,038 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2021-06-11 20:35:39,038 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2021-06-11 20:35:39,038 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:35:39,039 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 37 transitions, 99 flow [2021-06-11 20:35:39,039 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 37 transitions, 99 flow [2021-06-11 20:35:39,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 99 flow [2021-06-11 20:35:39,048 INFO L129 PetriNetUnfolder]: 4/37 cut-off events. [2021-06-11 20:35:39,048 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-11 20:35:39,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 37 events. 4/37 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 40. Up to 3 conditions per place. [2021-06-11 20:35:39,049 INFO L151 LiptonReduction]: Number of co-enabled transitions 622 [2021-06-11 20:35:39,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:39,088 INFO L163 LiptonReduction]: Checked pairs total: 445 [2021-06-11 20:35:39,088 INFO L165 LiptonReduction]: Total number of compositions: 1 [2021-06-11 20:35:39,089 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 51 [2021-06-11 20:35:39,093 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 97 flow [2021-06-11 20:35:39,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:39,094 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:35:39,094 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] [2021-06-11 20:35:39,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 20:35:39,095 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:35:39,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:35:39,096 INFO L82 PathProgramCache]: Analyzing trace with hash 6650007, now seen corresponding path program 1 times [2021-06-11 20:35:39,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:35:39,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49524698] [2021-06-11 20:35:39,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:35:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:35:39,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:39,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-11 20:35:39,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:35:39,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49524698] [2021-06-11 20:35:39,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:35:39,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 20:35:39,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354507218] [2021-06-11 20:35:39,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 20:35:39,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:35:39,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 20:35:39,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 20:35:39,144 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 84 [2021-06-11 20:35:39,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:39,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:35:39,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 84 [2021-06-11 20:35:39,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:35:39,156 INFO L129 PetriNetUnfolder]: 6/41 cut-off events. [2021-06-11 20:35:39,156 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-11 20:35:39,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 41 events. 6/41 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 1 based on Foata normal form. 1/37 useless extension candidates. Maximal degree in co-relation 51. Up to 6 conditions per place. [2021-06-11 20:35:39,156 INFO L132 encePairwiseOnDemand]: 81/84 looper letters, 2 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2021-06-11 20:35:39,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 105 flow [2021-06-11 20:35:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 20:35:39,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 20:35:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2021-06-11 20:35:39,158 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2021-06-11 20:35:39,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2021-06-11 20:35:39,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2021-06-11 20:35:39,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:35:39,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2021-06-11 20:35:39,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:39,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:39,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:39,160 INFO L185 Difference]: Start difference. First operand has 42 places, 36 transitions, 97 flow. Second operand 3 states and 233 transitions. [2021-06-11 20:35:39,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 105 flow [2021-06-11 20:35:39,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 36 transitions, 101 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 20:35:39,165 INFO L241 Difference]: Finished difference. Result has 43 places, 36 transitions, 101 flow [2021-06-11 20:35:39,166 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2021-06-11 20:35:39,166 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2021-06-11 20:35:39,166 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:35:39,166 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 36 transitions, 101 flow [2021-06-11 20:35:39,166 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 36 transitions, 101 flow [2021-06-11 20:35:39,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 36 transitions, 101 flow [2021-06-11 20:35:39,170 INFO L129 PetriNetUnfolder]: 4/36 cut-off events. [2021-06-11 20:35:39,170 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-11 20:35:39,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 36 events. 4/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 41. Up to 3 conditions per place. [2021-06-11 20:35:39,171 INFO L151 LiptonReduction]: Number of co-enabled transitions 576 [2021-06-11 20:35:39,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:39,201 INFO L163 LiptonReduction]: Checked pairs total: 223 [2021-06-11 20:35:39,204 INFO L165 LiptonReduction]: Total number of compositions: 1 [2021-06-11 20:35:39,204 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-06-11 20:35:39,205 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 99 flow [2021-06-11 20:35:39,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:39,206 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:35:39,207 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 20:35:39,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 20:35:39,207 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:35:39,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:35:39,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1051484428, now seen corresponding path program 1 times [2021-06-11 20:35:39,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:35:39,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588408527] [2021-06-11 20:35:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:35:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:35:39,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:39,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-11 20:35:39,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:35:39,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588408527] [2021-06-11 20:35:39,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:35:39,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 20:35:39,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252785186] [2021-06-11 20:35:39,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 20:35:39,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:35:39,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 20:35:39,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 20:35:39,250 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 85 [2021-06-11 20:35:39,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 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) [2021-06-11 20:35:39,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:35:39,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 85 [2021-06-11 20:35:39,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:35:39,264 INFO L129 PetriNetUnfolder]: 6/40 cut-off events. [2021-06-11 20:35:39,264 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-11 20:35:39,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 40 events. 6/40 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs, 1 based on Foata normal form. 1/36 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2021-06-11 20:35:39,265 INFO L132 encePairwiseOnDemand]: 82/85 looper letters, 2 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2021-06-11 20:35:39,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 107 flow [2021-06-11 20:35:39,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 20:35:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 20:35:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2021-06-11 20:35:39,266 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9254901960784314 [2021-06-11 20:35:39,267 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2021-06-11 20:35:39,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2021-06-11 20:35:39,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:35:39,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2021-06-11 20:35:39,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:39,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:39,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:39,268 INFO L185 Difference]: Start difference. First operand has 42 places, 35 transitions, 99 flow. Second operand 3 states and 236 transitions. [2021-06-11 20:35:39,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 107 flow [2021-06-11 20:35:39,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 100 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-11 20:35:39,271 INFO L241 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2021-06-11 20:35:39,271 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2021-06-11 20:35:39,271 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2021-06-11 20:35:39,271 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:35:39,271 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 35 transitions, 100 flow [2021-06-11 20:35:39,271 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 35 transitions, 100 flow [2021-06-11 20:35:39,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 100 flow [2021-06-11 20:35:39,278 INFO L129 PetriNetUnfolder]: 4/35 cut-off events. [2021-06-11 20:35:39,278 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-11 20:35:39,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 35 events. 4/35 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 41. Up to 3 conditions per place. [2021-06-11 20:35:39,279 INFO L151 LiptonReduction]: Number of co-enabled transitions 520 [2021-06-11 20:35:39,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:39,310 INFO L163 LiptonReduction]: Checked pairs total: 16 [2021-06-11 20:35:39,310 INFO L165 LiptonReduction]: Total number of compositions: 1 [2021-06-11 20:35:39,310 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 39 [2021-06-11 20:35:39,312 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2021-06-11 20:35:39,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 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) [2021-06-11 20:35:39,313 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:35:39,313 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 20:35:39,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 20:35:39,313 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:35:39,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:35:39,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1247451941, now seen corresponding path program 1 times [2021-06-11 20:35:39,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:35:39,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906458286] [2021-06-11 20:35:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:35:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:35:39,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:35:39,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:35:39,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:39,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:39,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:39,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:39,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:39,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:39,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:39,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:39,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:39,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:39,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:39,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:39,665 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:35:39,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:35:39,690 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:35:39,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:39,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:35:39,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906458286] [2021-06-11 20:35:39,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:35:39,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:35:39,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420920427] [2021-06-11 20:35:39,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:35:39,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:35:39,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:35:39,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:35:39,699 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 86 [2021-06-11 20:35:39,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 flow. Second operand has 14 states, 14 states have (on average 49.214285714285715) internal successors, (689), 14 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:39,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:35:39,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 86 [2021-06-11 20:35:39,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:35:40,533 INFO L129 PetriNetUnfolder]: 442/781 cut-off events. [2021-06-11 20:35:40,533 INFO L130 PetriNetUnfolder]: For 380/380 co-relation queries the response was YES. [2021-06-11 20:35:40,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 781 events. 442/781 cut-off events. For 380/380 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3420 event pairs, 214 based on Foata normal form. 1/705 useless extension candidates. Maximal degree in co-relation 1750. Up to 492 conditions per place. [2021-06-11 20:35:40,542 INFO L132 encePairwiseOnDemand]: 70/86 looper letters, 34 selfloop transitions, 50 changer transitions 0/102 dead transitions. [2021-06-11 20:35:40,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 102 transitions, 509 flow [2021-06-11 20:35:40,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-11 20:35:40,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-06-11 20:35:40,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1045 transitions. [2021-06-11 20:35:40,546 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6075581395348837 [2021-06-11 20:35:40,546 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1045 transitions. [2021-06-11 20:35:40,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1045 transitions. [2021-06-11 20:35:40,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:35:40,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1045 transitions. [2021-06-11 20:35:40,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 52.25) internal successors, (1045), 20 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:40,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 86.0) internal successors, (1806), 21 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:40,553 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 86.0) internal successors, (1806), 21 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:40,553 INFO L185 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 20 states and 1045 transitions. [2021-06-11 20:35:40,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 102 transitions, 509 flow [2021-06-11 20:35:40,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 102 transitions, 471 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 20:35:40,558 INFO L241 Difference]: Finished difference. Result has 67 places, 83 transitions, 406 flow [2021-06-11 20:35:40,558 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=406, PETRI_PLACES=67, PETRI_TRANSITIONS=83} [2021-06-11 20:35:40,559 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2021-06-11 20:35:40,559 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:35:40,559 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 83 transitions, 406 flow [2021-06-11 20:35:40,559 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 83 transitions, 406 flow [2021-06-11 20:35:40,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 83 transitions, 406 flow [2021-06-11 20:35:40,587 INFO L129 PetriNetUnfolder]: 155/378 cut-off events. [2021-06-11 20:35:40,587 INFO L130 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2021-06-11 20:35:40,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 378 events. 155/378 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1837 event pairs, 28 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 781. Up to 164 conditions per place. [2021-06-11 20:35:40,592 INFO L151 LiptonReduction]: Number of co-enabled transitions 790 [2021-06-11 20:35:40,603 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:35:40,604 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:35:40,604 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 45 [2021-06-11 20:35:40,604 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 83 transitions, 406 flow [2021-06-11 20:35:40,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.214285714285715) internal successors, (689), 14 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:40,605 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:35:40,605 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] [2021-06-11 20:35:40,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 20:35:40,605 INFO L428 AbstractCegarLoop]: === Iteration 6 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:35:40,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:35:40,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1457935903, now seen corresponding path program 1 times [2021-06-11 20:35:40,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:35:40,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074509550] [2021-06-11 20:35:40,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:35:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:35:40,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:40,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:35:40,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:40,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:35:40,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:40,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:40,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:40,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:40,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:40,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:40,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:40,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:40,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:40,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:40,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:40,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:40,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:40,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:40,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:40,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:40,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:40,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:40,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:40,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:40,786 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:35:40,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:35:40,813 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:35:40,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:35:40,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074509550] [2021-06-11 20:35:40,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:35:40,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:35:40,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638384345] [2021-06-11 20:35:40,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:35:40,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:35:40,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:35:40,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:35:40,821 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 86 [2021-06-11 20:35:40,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 83 transitions, 406 flow. Second operand has 13 states, 13 states have (on average 49.23076923076923) internal successors, (640), 13 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:40,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:35:40,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 86 [2021-06-11 20:35:40,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:35:41,795 INFO L129 PetriNetUnfolder]: 628/1086 cut-off events. [2021-06-11 20:35:41,795 INFO L130 PetriNetUnfolder]: For 1606/1608 co-relation queries the response was YES. [2021-06-11 20:35:41,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3439 conditions, 1086 events. 628/1086 cut-off events. For 1606/1608 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4960 event pairs, 67 based on Foata normal form. 3/995 useless extension candidates. Maximal degree in co-relation 3409. Up to 672 conditions per place. [2021-06-11 20:35:41,807 INFO L132 encePairwiseOnDemand]: 70/86 looper letters, 88 selfloop transitions, 71 changer transitions 0/177 dead transitions. [2021-06-11 20:35:41,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 177 transitions, 1206 flow [2021-06-11 20:35:41,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-11 20:35:41,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-06-11 20:35:41,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1269 transitions. [2021-06-11 20:35:41,812 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6148255813953488 [2021-06-11 20:35:41,812 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1269 transitions. [2021-06-11 20:35:41,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1269 transitions. [2021-06-11 20:35:41,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:35:41,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1269 transitions. [2021-06-11 20:35:41,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 52.875) internal successors, (1269), 24 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:41,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 86.0) internal successors, (2150), 25 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:41,821 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 86.0) internal successors, (2150), 25 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:41,821 INFO L185 Difference]: Start difference. First operand has 67 places, 83 transitions, 406 flow. Second operand 24 states and 1269 transitions. [2021-06-11 20:35:41,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 177 transitions, 1206 flow [2021-06-11 20:35:41,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 177 transitions, 1196 flow, removed 5 selfloop flow, removed 0 redundant places. [2021-06-11 20:35:41,835 INFO L241 Difference]: Finished difference. Result has 99 places, 147 transitions, 908 flow [2021-06-11 20:35:41,835 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=908, PETRI_PLACES=99, PETRI_TRANSITIONS=147} [2021-06-11 20:35:41,835 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2021-06-11 20:35:41,835 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:35:41,836 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 147 transitions, 908 flow [2021-06-11 20:35:41,836 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 147 transitions, 908 flow [2021-06-11 20:35:41,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 147 transitions, 908 flow [2021-06-11 20:35:41,887 INFO L129 PetriNetUnfolder]: 258/570 cut-off events. [2021-06-11 20:35:41,888 INFO L130 PetriNetUnfolder]: For 582/588 co-relation queries the response was YES. [2021-06-11 20:35:41,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1596 conditions, 570 events. 258/570 cut-off events. For 582/588 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2895 event pairs, 38 based on Foata normal form. 0/495 useless extension candidates. Maximal degree in co-relation 1558. Up to 277 conditions per place. [2021-06-11 20:35:41,897 INFO L151 LiptonReduction]: Number of co-enabled transitions 1186 [2021-06-11 20:35:41,929 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:35:41,929 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:35:41,929 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 94 [2021-06-11 20:35:41,930 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 147 transitions, 908 flow [2021-06-11 20:35:41,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.23076923076923) internal successors, (640), 13 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:41,931 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:35:41,931 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] [2021-06-11 20:35:41,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 20:35:41,931 INFO L428 AbstractCegarLoop]: === Iteration 7 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:35:41,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:35:41,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1564976335, now seen corresponding path program 2 times [2021-06-11 20:35:41,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:35:41,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568282141] [2021-06-11 20:35:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:35:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:35:41,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:42,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:35:42,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:42,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:35:42,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:42,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:42,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:42,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:42,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:42,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:42,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:42,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:42,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:42,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:42,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:42,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:42,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:42,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:42,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:42,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:42,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:42,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:42,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:42,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:42,185 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:35:42,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:35:42,212 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:35:42,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:42,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:35:42,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568282141] [2021-06-11 20:35:42,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:35:42,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-06-11 20:35:42,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137123046] [2021-06-11 20:35:42,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-11 20:35:42,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:35:42,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-11 20:35:42,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-06-11 20:35:42,218 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 86 [2021-06-11 20:35:42,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 147 transitions, 908 flow. Second operand has 15 states, 15 states have (on average 49.06666666666667) internal successors, (736), 15 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:42,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:35:42,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 86 [2021-06-11 20:35:42,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:35:43,485 INFO L129 PetriNetUnfolder]: 841/1459 cut-off events. [2021-06-11 20:35:43,485 INFO L130 PetriNetUnfolder]: For 5578/5582 co-relation queries the response was YES. [2021-06-11 20:35:43,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6119 conditions, 1459 events. 841/1459 cut-off events. For 5578/5582 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7209 event pairs, 120 based on Foata normal form. 5/1351 useless extension candidates. Maximal degree in co-relation 6065. Up to 925 conditions per place. [2021-06-11 20:35:43,501 INFO L132 encePairwiseOnDemand]: 70/86 looper letters, 149 selfloop transitions, 104 changer transitions 0/271 dead transitions. [2021-06-11 20:35:43,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 271 transitions, 2326 flow [2021-06-11 20:35:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-11 20:35:43,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-06-11 20:35:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1779 transitions. [2021-06-11 20:35:43,505 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6084131326949385 [2021-06-11 20:35:43,505 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1779 transitions. [2021-06-11 20:35:43,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1779 transitions. [2021-06-11 20:35:43,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:35:43,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1779 transitions. [2021-06-11 20:35:43,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.3235294117647) internal successors, (1779), 34 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:43,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 86.0) internal successors, (3010), 35 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:43,514 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 86.0) internal successors, (3010), 35 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:43,514 INFO L185 Difference]: Start difference. First operand has 99 places, 147 transitions, 908 flow. Second operand 34 states and 1779 transitions. [2021-06-11 20:35:43,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 271 transitions, 2326 flow [2021-06-11 20:35:43,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 271 transitions, 2118 flow, removed 98 selfloop flow, removed 2 redundant places. [2021-06-11 20:35:43,536 INFO L241 Difference]: Finished difference. Result has 140 places, 238 transitions, 1672 flow [2021-06-11 20:35:43,537 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1672, PETRI_PLACES=140, PETRI_TRANSITIONS=238} [2021-06-11 20:35:43,537 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 87 predicate places. [2021-06-11 20:35:43,537 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:35:43,537 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 238 transitions, 1672 flow [2021-06-11 20:35:43,537 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 238 transitions, 1672 flow [2021-06-11 20:35:43,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 140 places, 238 transitions, 1672 flow [2021-06-11 20:35:43,597 INFO L129 PetriNetUnfolder]: 359/795 cut-off events. [2021-06-11 20:35:43,597 INFO L130 PetriNetUnfolder]: For 2116/2139 co-relation queries the response was YES. [2021-06-11 20:35:43,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2793 conditions, 795 events. 359/795 cut-off events. For 2116/2139 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4430 event pairs, 24 based on Foata normal form. 3/707 useless extension candidates. Maximal degree in co-relation 2731. Up to 341 conditions per place. [2021-06-11 20:35:43,609 INFO L151 LiptonReduction]: Number of co-enabled transitions 1790 [2021-06-11 20:35:43,654 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:35:43,654 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:35:43,655 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 118 [2021-06-11 20:35:43,655 INFO L480 AbstractCegarLoop]: Abstraction has has 140 places, 238 transitions, 1672 flow [2021-06-11 20:35:43,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 49.06666666666667) internal successors, (736), 15 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:43,656 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:35:43,656 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] [2021-06-11 20:35:43,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-11 20:35:43,656 INFO L428 AbstractCegarLoop]: === Iteration 8 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:35:43,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:35:43,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1442920971, now seen corresponding path program 3 times [2021-06-11 20:35:43,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:35:43,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465504225] [2021-06-11 20:35:43,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:35:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:35:43,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:43,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:35:43,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:43,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:35:43,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:43,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:43,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:43,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:43,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:43,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:43,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:43,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:43,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:43,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:43,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:43,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:43,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:43,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:43,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:43,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:43,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:43,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:43,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:43,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:43,841 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:35:43,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:35:43,866 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:35:43,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:43,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:35:43,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465504225] [2021-06-11 20:35:43,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:35:43,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:35:43,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18510298] [2021-06-11 20:35:43,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:35:43,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:35:43,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:35:43,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:35:43,872 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 86 [2021-06-11 20:35:43,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 238 transitions, 1672 flow. Second operand has 14 states, 14 states have (on average 49.142857142857146) internal successors, (688), 14 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:43,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:35:43,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 86 [2021-06-11 20:35:43,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:35:44,996 INFO L129 PetriNetUnfolder]: 962/1702 cut-off events. [2021-06-11 20:35:44,996 INFO L130 PetriNetUnfolder]: For 11503/11514 co-relation queries the response was YES. [2021-06-11 20:35:45,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8307 conditions, 1702 events. 962/1702 cut-off events. For 11503/11514 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9000 event pairs, 144 based on Foata normal form. 12/1573 useless extension candidates. Maximal degree in co-relation 8233. Up to 1083 conditions per place. [2021-06-11 20:35:45,019 INFO L132 encePairwiseOnDemand]: 70/86 looper letters, 196 selfloop transitions, 119 changer transitions 0/333 dead transitions. [2021-06-11 20:35:45,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 333 transitions, 3212 flow [2021-06-11 20:35:45,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-11 20:35:45,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-06-11 20:35:45,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1574 transitions. [2021-06-11 20:35:45,023 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.610077519379845 [2021-06-11 20:35:45,023 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1574 transitions. [2021-06-11 20:35:45,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1574 transitions. [2021-06-11 20:35:45,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:35:45,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1574 transitions. [2021-06-11 20:35:45,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.46666666666667) internal successors, (1574), 30 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:45,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 86.0) internal successors, (2666), 31 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:45,032 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 86.0) internal successors, (2666), 31 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:45,032 INFO L185 Difference]: Start difference. First operand has 140 places, 238 transitions, 1672 flow. Second operand 30 states and 1574 transitions. [2021-06-11 20:35:45,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 333 transitions, 3212 flow [2021-06-11 20:35:45,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 333 transitions, 2899 flow, removed 145 selfloop flow, removed 2 redundant places. [2021-06-11 20:35:45,065 INFO L241 Difference]: Finished difference. Result has 178 places, 299 transitions, 2246 flow [2021-06-11 20:35:45,065 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2246, PETRI_PLACES=178, PETRI_TRANSITIONS=299} [2021-06-11 20:35:45,066 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 125 predicate places. [2021-06-11 20:35:45,066 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:35:45,066 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 299 transitions, 2246 flow [2021-06-11 20:35:45,066 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 299 transitions, 2246 flow [2021-06-11 20:35:45,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 178 places, 299 transitions, 2246 flow [2021-06-11 20:35:45,166 INFO L129 PetriNetUnfolder]: 435/972 cut-off events. [2021-06-11 20:35:45,167 INFO L130 PetriNetUnfolder]: For 3722/3758 co-relation queries the response was YES. [2021-06-11 20:35:45,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3669 conditions, 972 events. 435/972 cut-off events. For 3722/3758 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5772 event pairs, 17 based on Foata normal form. 2/841 useless extension candidates. Maximal degree in co-relation 3585. Up to 326 conditions per place. [2021-06-11 20:35:45,182 INFO L151 LiptonReduction]: Number of co-enabled transitions 2174 [2021-06-11 20:35:45,220 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:35:45,220 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:35:45,220 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 154 [2021-06-11 20:35:45,221 INFO L480 AbstractCegarLoop]: Abstraction has has 178 places, 299 transitions, 2246 flow [2021-06-11 20:35:45,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.142857142857146) internal successors, (688), 14 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:45,221 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:35:45,221 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] [2021-06-11 20:35:45,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-11 20:35:45,222 INFO L428 AbstractCegarLoop]: === Iteration 9 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:35:45,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:35:45,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1053539595, now seen corresponding path program 4 times [2021-06-11 20:35:45,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:35:45,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497965744] [2021-06-11 20:35:45,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:35:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:35:45,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:45,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:35:45,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:45,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:35:45,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:45,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:45,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:45,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:45,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:45,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:45,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:45,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:45,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:45,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:45,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:45,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:45,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:45,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:45,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:45,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:45,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:45,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:45,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:45,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:45,437 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:35:45,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:35:45,456 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:35:45,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:35:45,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497965744] [2021-06-11 20:35:45,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:35:45,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-06-11 20:35:45,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672933413] [2021-06-11 20:35:45,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-11 20:35:45,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:35:45,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-11 20:35:45,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-06-11 20:35:45,462 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 86 [2021-06-11 20:35:45,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 299 transitions, 2246 flow. Second operand has 15 states, 15 states have (on average 49.06666666666667) internal successors, (736), 15 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:45,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:35:45,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 86 [2021-06-11 20:35:45,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:35:46,920 INFO L129 PetriNetUnfolder]: 1042/1897 cut-off events. [2021-06-11 20:35:46,920 INFO L130 PetriNetUnfolder]: For 18108/18110 co-relation queries the response was YES. [2021-06-11 20:35:46,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10145 conditions, 1897 events. 1042/1897 cut-off events. For 18108/18110 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10617 event pairs, 159 based on Foata normal form. 3/1741 useless extension candidates. Maximal degree in co-relation 10035. Up to 1191 conditions per place. [2021-06-11 20:35:46,955 INFO L132 encePairwiseOnDemand]: 70/86 looper letters, 224 selfloop transitions, 143 changer transitions 0/385 dead transitions. [2021-06-11 20:35:46,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 385 transitions, 4010 flow [2021-06-11 20:35:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-11 20:35:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-06-11 20:35:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1772 transitions. [2021-06-11 20:35:46,959 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6060191518467852 [2021-06-11 20:35:46,959 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1772 transitions. [2021-06-11 20:35:46,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1772 transitions. [2021-06-11 20:35:46,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:35:46,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1772 transitions. [2021-06-11 20:35:46,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.11764705882353) internal successors, (1772), 34 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:46,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 86.0) internal successors, (3010), 35 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:46,970 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 86.0) internal successors, (3010), 35 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:46,970 INFO L185 Difference]: Start difference. First operand has 178 places, 299 transitions, 2246 flow. Second operand 34 states and 1772 transitions. [2021-06-11 20:35:46,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 385 transitions, 4010 flow [2021-06-11 20:35:47,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 385 transitions, 3778 flow, removed 113 selfloop flow, removed 1 redundant places. [2021-06-11 20:35:47,033 INFO L241 Difference]: Finished difference. Result has 219 places, 356 transitions, 3062 flow [2021-06-11 20:35:47,033 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3062, PETRI_PLACES=219, PETRI_TRANSITIONS=356} [2021-06-11 20:35:47,033 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 166 predicate places. [2021-06-11 20:35:47,033 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:35:47,034 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 356 transitions, 3062 flow [2021-06-11 20:35:47,034 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 356 transitions, 3062 flow [2021-06-11 20:35:47,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 219 places, 356 transitions, 3062 flow [2021-06-11 20:35:47,146 INFO L129 PetriNetUnfolder]: 496/1128 cut-off events. [2021-06-11 20:35:47,146 INFO L130 PetriNetUnfolder]: For 6996/7050 co-relation queries the response was YES. [2021-06-11 20:35:47,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4805 conditions, 1128 events. 496/1128 cut-off events. For 6996/7050 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7030 event pairs, 20 based on Foata normal form. 9/993 useless extension candidates. Maximal degree in co-relation 4687. Up to 358 conditions per place. [2021-06-11 20:35:47,168 INFO L151 LiptonReduction]: Number of co-enabled transitions 2550 [2021-06-11 20:35:47,210 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:35:47,210 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:35:47,211 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 178 [2021-06-11 20:35:47,211 INFO L480 AbstractCegarLoop]: Abstraction has has 219 places, 356 transitions, 3062 flow [2021-06-11 20:35:47,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 49.06666666666667) internal successors, (736), 15 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:47,212 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:35:47,212 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] [2021-06-11 20:35:47,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-11 20:35:47,212 INFO L428 AbstractCegarLoop]: === Iteration 10 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:35:47,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:35:47,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1534662943, now seen corresponding path program 5 times [2021-06-11 20:35:47,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:35:47,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125239617] [2021-06-11 20:35:47,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:35:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:35:47,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:47,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:35:47,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:47,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:35:47,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:47,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:47,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:47,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:47,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:47,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:47,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:47,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:47,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:47,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:47,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:47,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:47,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:47,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:47,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:47,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:47,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:47,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:47,406 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:35:47,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:35:47,427 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:35:47,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:35:47,445 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:35:47,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:35:47,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125239617] [2021-06-11 20:35:47,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:35:47,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-06-11 20:35:47,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001909067] [2021-06-11 20:35:47,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-11 20:35:47,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:35:47,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-11 20:35:47,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-06-11 20:35:47,451 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 86 [2021-06-11 20:35:47,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 356 transitions, 3062 flow. Second operand has 15 states, 15 states have (on average 49.06666666666667) internal successors, (736), 15 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:47,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:35:47,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 86 [2021-06-11 20:35:47,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:35:48,586 INFO L129 PetriNetUnfolder]: 1326/2355 cut-off events. [2021-06-11 20:35:48,587 INFO L130 PetriNetUnfolder]: For 35904/35917 co-relation queries the response was YES. [2021-06-11 20:35:48,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14328 conditions, 2355 events. 1326/2355 cut-off events. For 35904/35917 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13385 event pairs, 168 based on Foata normal form. 14/2155 useless extension candidates. Maximal degree in co-relation 14199. Up to 1342 conditions per place. [2021-06-11 20:35:48,625 INFO L132 encePairwiseOnDemand]: 70/86 looper letters, 273 selfloop transitions, 274 changer transitions 0/565 dead transitions. [2021-06-11 20:35:48,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 565 transitions, 6590 flow [2021-06-11 20:35:48,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-11 20:35:48,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-06-11 20:35:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1388 transitions. [2021-06-11 20:35:48,628 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6207513416815742 [2021-06-11 20:35:48,628 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1388 transitions. [2021-06-11 20:35:48,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1388 transitions. [2021-06-11 20:35:48,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:35:48,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1388 transitions. [2021-06-11 20:35:48,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 53.38461538461539) internal successors, (1388), 26 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:48,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 86.0) internal successors, (2322), 27 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:48,634 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 86.0) internal successors, (2322), 27 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:48,634 INFO L185 Difference]: Start difference. First operand has 219 places, 356 transitions, 3062 flow. Second operand 26 states and 1388 transitions. [2021-06-11 20:35:48,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 565 transitions, 6590 flow [2021-06-11 20:35:48,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 565 transitions, 5807 flow, removed 343 selfloop flow, removed 7 redundant places. [2021-06-11 20:35:48,763 INFO L241 Difference]: Finished difference. Result has 249 places, 523 transitions, 4930 flow [2021-06-11 20:35:48,763 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2526, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4930, PETRI_PLACES=249, PETRI_TRANSITIONS=523} [2021-06-11 20:35:48,763 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 196 predicate places. [2021-06-11 20:35:48,763 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:35:48,763 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 523 transitions, 4930 flow [2021-06-11 20:35:48,764 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 523 transitions, 4930 flow [2021-06-11 20:35:48,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 249 places, 523 transitions, 4930 flow [2021-06-11 20:35:48,915 INFO L129 PetriNetUnfolder]: 704/1506 cut-off events. [2021-06-11 20:35:48,916 INFO L130 PetriNetUnfolder]: For 11220/11336 co-relation queries the response was YES. [2021-06-11 20:35:48,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6874 conditions, 1506 events. 704/1506 cut-off events. For 11220/11336 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9827 event pairs, 24 based on Foata normal form. 18/1321 useless extension candidates. Maximal degree in co-relation 6735. Up to 455 conditions per place. [2021-06-11 20:35:48,949 INFO L151 LiptonReduction]: Number of co-enabled transitions 3290 [2021-06-11 20:35:49,014 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:35:49,014 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:35:49,014 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 251 [2021-06-11 20:35:49,015 INFO L480 AbstractCegarLoop]: Abstraction has has 249 places, 523 transitions, 4930 flow [2021-06-11 20:35:49,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 49.06666666666667) internal successors, (736), 15 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:49,015 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:35:49,015 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] [2021-06-11 20:35:49,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-11 20:35:49,016 INFO L428 AbstractCegarLoop]: === Iteration 11 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:35:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:35:49,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1419197711, now seen corresponding path program 6 times [2021-06-11 20:35:49,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:35:49,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744834735] [2021-06-11 20:35:49,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:35:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:35:49,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:49,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:35:49,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:49,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:35:49,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:49,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:49,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:49,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:49,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:49,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:49,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:49,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:49,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:49,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:49,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:49,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:49,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:49,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:49,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:49,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:49,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:49,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:49,220 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:35:49,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:35:49,240 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:35:49,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:35:49,260 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:35:49,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:35:49,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744834735] [2021-06-11 20:35:49,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:35:49,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:35:49,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612276915] [2021-06-11 20:35:49,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:35:49,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:35:49,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:35:49,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:35:49,269 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 86 [2021-06-11 20:35:49,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 523 transitions, 4930 flow. Second operand has 14 states, 14 states have (on average 49.142857142857146) internal successors, (688), 14 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:49,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:35:49,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 86 [2021-06-11 20:35:49,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:35:51,133 INFO L129 PetriNetUnfolder]: 1690/3060 cut-off events. [2021-06-11 20:35:51,133 INFO L130 PetriNetUnfolder]: For 56744/56748 co-relation queries the response was YES. [2021-06-11 20:35:51,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19942 conditions, 3060 events. 1690/3060 cut-off events. For 56744/56748 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 19024 event pairs, 174 based on Foata normal form. 6/2752 useless extension candidates. Maximal degree in co-relation 19776. Up to 1667 conditions per place. [2021-06-11 20:35:51,182 INFO L132 encePairwiseOnDemand]: 70/86 looper letters, 376 selfloop transitions, 383 changer transitions 2/779 dead transitions. [2021-06-11 20:35:51,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 779 transitions, 10010 flow [2021-06-11 20:35:51,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-11 20:35:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-06-11 20:35:51,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2098 transitions. [2021-06-11 20:35:51,193 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6098837209302326 [2021-06-11 20:35:51,194 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2098 transitions. [2021-06-11 20:35:51,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2098 transitions. [2021-06-11 20:35:51,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:35:51,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2098 transitions. [2021-06-11 20:35:51,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 52.45) internal successors, (2098), 40 states have internal predecessors, (2098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:51,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 86.0) internal successors, (3526), 41 states have internal predecessors, (3526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:51,208 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 86.0) internal successors, (3526), 41 states have internal predecessors, (3526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:51,208 INFO L185 Difference]: Start difference. First operand has 249 places, 523 transitions, 4930 flow. Second operand 40 states and 2098 transitions. [2021-06-11 20:35:51,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 779 transitions, 10010 flow [2021-06-11 20:35:51,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 779 transitions, 9202 flow, removed 397 selfloop flow, removed 2 redundant places. [2021-06-11 20:35:51,410 INFO L241 Difference]: Finished difference. Result has 303 places, 743 transitions, 8399 flow [2021-06-11 20:35:51,411 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=4472, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=8399, PETRI_PLACES=303, PETRI_TRANSITIONS=743} [2021-06-11 20:35:51,411 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 250 predicate places. [2021-06-11 20:35:51,411 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:35:51,411 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 303 places, 743 transitions, 8399 flow [2021-06-11 20:35:51,411 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 303 places, 743 transitions, 8399 flow [2021-06-11 20:35:51,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 302 places, 743 transitions, 8399 flow [2021-06-11 20:35:51,677 INFO L129 PetriNetUnfolder]: 1109/2236 cut-off events. [2021-06-11 20:35:51,677 INFO L130 PetriNetUnfolder]: For 26485/26692 co-relation queries the response was YES. [2021-06-11 20:35:51,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12104 conditions, 2236 events. 1109/2236 cut-off events. For 26485/26692 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 15060 event pairs, 33 based on Foata normal form. 9/1920 useless extension candidates. Maximal degree in co-relation 11980. Up to 692 conditions per place. [2021-06-11 20:35:51,721 INFO L151 LiptonReduction]: Number of co-enabled transitions 4368 [2021-06-11 20:35:51,812 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:35:51,812 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:35:51,812 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 401 [2021-06-11 20:35:51,813 INFO L480 AbstractCegarLoop]: Abstraction has has 302 places, 743 transitions, 8399 flow [2021-06-11 20:35:51,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.142857142857146) internal successors, (688), 14 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:51,813 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:35:51,813 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] [2021-06-11 20:35:51,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-11 20:35:51,813 INFO L428 AbstractCegarLoop]: === Iteration 12 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:35:51,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:35:51,814 INFO L82 PathProgramCache]: Analyzing trace with hash -120516035, now seen corresponding path program 7 times [2021-06-11 20:35:51,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:35:51,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682712373] [2021-06-11 20:35:51,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:35:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:35:51,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:51,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:35:51,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:51,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:35:51,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:51,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:51,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:51,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:51,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:51,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:51,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:51,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:51,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:51,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:51,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:51,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:51,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:51,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:51,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:51,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:51,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:51,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:51,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:51,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:52,013 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:35:52,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:35:52,034 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:35:52,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:35:52,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682712373] [2021-06-11 20:35:52,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:35:52,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-06-11 20:35:52,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885581609] [2021-06-11 20:35:52,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-11 20:35:52,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:35:52,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-11 20:35:52,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-06-11 20:35:52,050 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 86 [2021-06-11 20:35:52,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 743 transitions, 8399 flow. Second operand has 15 states, 15 states have (on average 49.06666666666667) internal successors, (736), 15 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:52,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:35:52,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 86 [2021-06-11 20:35:52,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:35:53,740 INFO L129 PetriNetUnfolder]: 1834/3354 cut-off events. [2021-06-11 20:35:53,740 INFO L130 PetriNetUnfolder]: For 71460/71468 co-relation queries the response was YES. [2021-06-11 20:35:53,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23289 conditions, 3354 events. 1834/3354 cut-off events. For 71460/71468 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 21509 event pairs, 175 based on Foata normal form. 9/3013 useless extension candidates. Maximal degree in co-relation 23159. Up to 1850 conditions per place. [2021-06-11 20:35:53,782 INFO L132 encePairwiseOnDemand]: 70/86 looper letters, 459 selfloop transitions, 400 changer transitions 0/877 dead transitions. [2021-06-11 20:35:53,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 877 transitions, 12137 flow [2021-06-11 20:35:53,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-11 20:35:53,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-06-11 20:35:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1685 transitions. [2021-06-11 20:35:53,785 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.612281976744186 [2021-06-11 20:35:53,785 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1685 transitions. [2021-06-11 20:35:53,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1685 transitions. [2021-06-11 20:35:53,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:35:53,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1685 transitions. [2021-06-11 20:35:53,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.65625) internal successors, (1685), 32 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:53,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 86.0) internal successors, (2838), 33 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:53,792 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 86.0) internal successors, (2838), 33 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:53,792 INFO L185 Difference]: Start difference. First operand has 302 places, 743 transitions, 8399 flow. Second operand 32 states and 1685 transitions. [2021-06-11 20:35:53,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 877 transitions, 12137 flow [2021-06-11 20:35:54,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 877 transitions, 10751 flow, removed 678 selfloop flow, removed 4 redundant places. [2021-06-11 20:35:54,106 INFO L241 Difference]: Finished difference. Result has 339 places, 840 transitions, 9430 flow [2021-06-11 20:35:54,106 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=7305, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=9430, PETRI_PLACES=339, PETRI_TRANSITIONS=840} [2021-06-11 20:35:54,106 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 286 predicate places. [2021-06-11 20:35:54,106 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:35:54,107 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 339 places, 840 transitions, 9430 flow [2021-06-11 20:35:54,107 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 339 places, 840 transitions, 9430 flow [2021-06-11 20:35:54,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 339 places, 840 transitions, 9430 flow [2021-06-11 20:35:54,368 INFO L129 PetriNetUnfolder]: 1201/2448 cut-off events. [2021-06-11 20:35:54,368 INFO L130 PetriNetUnfolder]: For 24455/24522 co-relation queries the response was YES. [2021-06-11 20:35:54,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12765 conditions, 2448 events. 1201/2448 cut-off events. For 24455/24522 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 17003 event pairs, 27 based on Foata normal form. 16/2105 useless extension candidates. Maximal degree in co-relation 12634. Up to 736 conditions per place. [2021-06-11 20:35:54,408 INFO L151 LiptonReduction]: Number of co-enabled transitions 4958 [2021-06-11 20:35:54,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:54,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:54,730 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:35:54,731 INFO L165 LiptonReduction]: Total number of compositions: 2 [2021-06-11 20:35:54,731 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 625 [2021-06-11 20:35:54,731 INFO L480 AbstractCegarLoop]: Abstraction has has 339 places, 840 transitions, 9430 flow [2021-06-11 20:35:54,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 49.06666666666667) internal successors, (736), 15 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:54,732 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:35:54,732 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] [2021-06-11 20:35:54,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-11 20:35:54,732 INFO L428 AbstractCegarLoop]: === Iteration 13 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:35:54,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:35:54,732 INFO L82 PathProgramCache]: Analyzing trace with hash -954979201, now seen corresponding path program 8 times [2021-06-11 20:35:54,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:35:54,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091859458] [2021-06-11 20:35:54,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:35:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:35:54,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:54,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:35:54,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:54,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:35:54,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:54,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:54,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:54,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:54,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:54,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:54,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:54,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:54,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:54,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:54,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:54,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:54,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:54,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:54,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:54,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:54,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:54,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:54,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:54,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:54,915 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:35:54,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:35:54,932 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:35:54,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:35:54,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091859458] [2021-06-11 20:35:54,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:35:54,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-06-11 20:35:54,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16789272] [2021-06-11 20:35:54,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-11 20:35:54,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:35:54,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-11 20:35:54,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-06-11 20:35:54,938 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 88 [2021-06-11 20:35:54,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 840 transitions, 9430 flow. Second operand has 15 states, 15 states have (on average 49.06666666666667) internal successors, (736), 15 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:54,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:35:54,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 88 [2021-06-11 20:35:54,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:35:56,768 INFO L129 PetriNetUnfolder]: 1877/3440 cut-off events. [2021-06-11 20:35:56,768 INFO L130 PetriNetUnfolder]: For 71300/71302 co-relation queries the response was YES. [2021-06-11 20:35:56,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23737 conditions, 3440 events. 1877/3440 cut-off events. For 71300/71302 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 22330 event pairs, 181 based on Foata normal form. 3/3086 useless extension candidates. Maximal degree in co-relation 23601. Up to 1888 conditions per place. [2021-06-11 20:35:56,892 INFO L132 encePairwiseOnDemand]: 70/88 looper letters, 417 selfloop transitions, 490 changer transitions 4/929 dead transitions. [2021-06-11 20:35:56,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 929 transitions, 12713 flow [2021-06-11 20:35:56,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-11 20:35:56,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-06-11 20:35:56,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1801 transitions. [2021-06-11 20:35:56,896 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6019385026737968 [2021-06-11 20:35:56,896 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1801 transitions. [2021-06-11 20:35:56,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1801 transitions. [2021-06-11 20:35:56,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:35:56,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1801 transitions. [2021-06-11 20:35:56,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.970588235294116) internal successors, (1801), 34 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:56,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 88.0) internal successors, (3080), 35 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:56,904 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 88.0) internal successors, (3080), 35 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:56,904 INFO L185 Difference]: Start difference. First operand has 339 places, 840 transitions, 9430 flow. Second operand 34 states and 1801 transitions. [2021-06-11 20:35:56,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 929 transitions, 12713 flow [2021-06-11 20:35:57,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 929 transitions, 12144 flow, removed 146 selfloop flow, removed 11 redundant places. [2021-06-11 20:35:57,297 INFO L241 Difference]: Finished difference. Result has 367 places, 889 transitions, 10641 flow [2021-06-11 20:35:57,298 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=8869, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=840, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=441, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=10641, PETRI_PLACES=367, PETRI_TRANSITIONS=889} [2021-06-11 20:35:57,298 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 314 predicate places. [2021-06-11 20:35:57,298 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:35:57,298 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 367 places, 889 transitions, 10641 flow [2021-06-11 20:35:57,299 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 367 places, 889 transitions, 10641 flow [2021-06-11 20:35:57,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 365 places, 889 transitions, 10641 flow [2021-06-11 20:35:57,643 INFO L129 PetriNetUnfolder]: 1223/2514 cut-off events. [2021-06-11 20:35:57,643 INFO L130 PetriNetUnfolder]: For 28407/28446 co-relation queries the response was YES. [2021-06-11 20:35:57,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13918 conditions, 2514 events. 1223/2514 cut-off events. For 28407/28446 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 17827 event pairs, 23 based on Foata normal form. 23/2190 useless extension candidates. Maximal degree in co-relation 13770. Up to 752 conditions per place. [2021-06-11 20:35:57,682 INFO L151 LiptonReduction]: Number of co-enabled transitions 5312 [2021-06-11 20:35:57,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:57,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:35:58,025 INFO L163 LiptonReduction]: Checked pairs total: 2 [2021-06-11 20:35:58,025 INFO L165 LiptonReduction]: Total number of compositions: 2 [2021-06-11 20:35:58,025 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 727 [2021-06-11 20:35:58,026 INFO L480 AbstractCegarLoop]: Abstraction has has 365 places, 889 transitions, 10639 flow [2021-06-11 20:35:58,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 49.06666666666667) internal successors, (736), 15 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:58,027 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:35:58,027 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 20:35:58,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-11 20:35:58,027 INFO L428 AbstractCegarLoop]: === Iteration 14 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:35:58,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:35:58,027 INFO L82 PathProgramCache]: Analyzing trace with hash -239774007, now seen corresponding path program 1 times [2021-06-11 20:35:58,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:35:58,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352223354] [2021-06-11 20:35:58,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:35:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:35:58,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:58,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:35:58,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:58,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:35:58,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:58,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:58,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:58,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:58,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:58,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:58,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:58,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:58,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:58,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:58,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:58,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:35:58,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:58,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:58,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:58,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:58,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:35:58,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:35:58,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:35:58,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:35:58,196 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:35:58,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:35:58,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:35:58,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352223354] [2021-06-11 20:35:58,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:35:58,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:35:58,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524786160] [2021-06-11 20:35:58,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:35:58,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:35:58,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:35:58,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:35:58,201 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:35:58,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 889 transitions, 10639 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:58,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:35:58,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:35:58,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:35:59,819 INFO L129 PetriNetUnfolder]: 1868/3444 cut-off events. [2021-06-11 20:35:59,819 INFO L130 PetriNetUnfolder]: For 81031/81039 co-relation queries the response was YES. [2021-06-11 20:35:59,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24891 conditions, 3444 events. 1868/3444 cut-off events. For 81031/81039 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 22474 event pairs, 200 based on Foata normal form. 9/3101 useless extension candidates. Maximal degree in co-relation 24705. Up to 1996 conditions per place. [2021-06-11 20:35:59,925 INFO L132 encePairwiseOnDemand]: 71/90 looper letters, 452 selfloop transitions, 438 changer transitions 0/908 dead transitions. [2021-06-11 20:35:59,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 908 transitions, 12798 flow [2021-06-11 20:35:59,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-11 20:35:59,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-06-11 20:35:59,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1331 transitions. [2021-06-11 20:35:59,938 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5915555555555555 [2021-06-11 20:35:59,938 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1331 transitions. [2021-06-11 20:35:59,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1331 transitions. [2021-06-11 20:35:59,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:35:59,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1331 transitions. [2021-06-11 20:35:59,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 53.24) internal successors, (1331), 25 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:59,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 90.0) internal successors, (2340), 26 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:59,945 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 90.0) internal successors, (2340), 26 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:35:59,945 INFO L185 Difference]: Start difference. First operand has 365 places, 889 transitions, 10639 flow. Second operand 25 states and 1331 transitions. [2021-06-11 20:35:59,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 908 transitions, 12798 flow [2021-06-11 20:36:00,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 908 transitions, 11846 flow, removed 185 selfloop flow, removed 19 redundant places. [2021-06-11 20:36:00,255 INFO L241 Difference]: Finished difference. Result has 371 places, 889 transitions, 10568 flow [2021-06-11 20:36:00,256 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=9689, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=889, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=10568, PETRI_PLACES=371, PETRI_TRANSITIONS=889} [2021-06-11 20:36:00,257 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 318 predicate places. [2021-06-11 20:36:00,257 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:36:00,257 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 371 places, 889 transitions, 10568 flow [2021-06-11 20:36:00,257 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 371 places, 889 transitions, 10568 flow [2021-06-11 20:36:00,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 371 places, 889 transitions, 10568 flow [2021-06-11 20:36:00,607 INFO L129 PetriNetUnfolder]: 1251/2567 cut-off events. [2021-06-11 20:36:00,607 INFO L130 PetriNetUnfolder]: For 27098/27140 co-relation queries the response was YES. [2021-06-11 20:36:00,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14337 conditions, 2567 events. 1251/2567 cut-off events. For 27098/27140 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 18198 event pairs, 28 based on Foata normal form. 12/2218 useless extension candidates. Maximal degree in co-relation 14172. Up to 786 conditions per place. [2021-06-11 20:36:00,656 INFO L151 LiptonReduction]: Number of co-enabled transitions 5312 [2021-06-11 20:36:00,771 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:36:00,771 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:36:00,772 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 515 [2021-06-11 20:36:00,772 INFO L480 AbstractCegarLoop]: Abstraction has has 371 places, 889 transitions, 10568 flow [2021-06-11 20:36:00,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:00,773 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:36:00,773 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] [2021-06-11 20:36:00,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-11 20:36:00,773 INFO L428 AbstractCegarLoop]: === Iteration 15 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:36:00,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:36:00,773 INFO L82 PathProgramCache]: Analyzing trace with hash 886515181, now seen corresponding path program 1 times [2021-06-11 20:36:00,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:36:00,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617081769] [2021-06-11 20:36:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:36:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:36:00,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:00,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:36:00,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:00,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:36:00,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:00,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:00,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:00,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:00,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:00,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:00,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:00,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:00,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:00,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:00,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:00,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:00,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:00,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:00,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:00,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:00,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:00,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:00,994 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:36:00,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:36:01,012 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:36:01,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:36:01,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617081769] [2021-06-11 20:36:01,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:36:01,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:36:01,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626358045] [2021-06-11 20:36:01,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:36:01,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:36:01,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:36:01,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:36:01,016 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:36:01,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 889 transitions, 10568 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:01,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:36:01,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:36:01,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:36:02,497 INFO L129 PetriNetUnfolder]: 1924/3584 cut-off events. [2021-06-11 20:36:02,497 INFO L130 PetriNetUnfolder]: For 80803/80805 co-relation queries the response was YES. [2021-06-11 20:36:02,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25804 conditions, 3584 events. 1924/3584 cut-off events. For 80803/80805 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 23894 event pairs, 199 based on Foata normal form. 3/3208 useless extension candidates. Maximal degree in co-relation 25608. Up to 2042 conditions per place. [2021-06-11 20:36:02,548 INFO L132 encePairwiseOnDemand]: 71/90 looper letters, 472 selfloop transitions, 461 changer transitions 0/951 dead transitions. [2021-06-11 20:36:02,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 951 transitions, 13467 flow [2021-06-11 20:36:02,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-11 20:36:02,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-06-11 20:36:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1189 transitions. [2021-06-11 20:36:02,550 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6005050505050505 [2021-06-11 20:36:02,550 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1189 transitions. [2021-06-11 20:36:02,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1189 transitions. [2021-06-11 20:36:02,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:36:02,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1189 transitions. [2021-06-11 20:36:02,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 54.04545454545455) internal successors, (1189), 22 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:02,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 90.0) internal successors, (2070), 23 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:02,554 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 90.0) internal successors, (2070), 23 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:02,554 INFO L185 Difference]: Start difference. First operand has 371 places, 889 transitions, 10568 flow. Second operand 22 states and 1189 transitions. [2021-06-11 20:36:02,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 951 transitions, 13467 flow [2021-06-11 20:36:02,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 951 transitions, 12597 flow, removed 1 selfloop flow, removed 21 redundant places. [2021-06-11 20:36:02,926 INFO L241 Difference]: Finished difference. Result has 376 places, 917 transitions, 11122 flow [2021-06-11 20:36:02,927 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=9698, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=889, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=440, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=11122, PETRI_PLACES=376, PETRI_TRANSITIONS=917} [2021-06-11 20:36:02,927 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 323 predicate places. [2021-06-11 20:36:02,927 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:36:02,927 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 376 places, 917 transitions, 11122 flow [2021-06-11 20:36:02,928 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 376 places, 917 transitions, 11122 flow [2021-06-11 20:36:02,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 376 places, 917 transitions, 11122 flow [2021-06-11 20:36:03,376 INFO L129 PetriNetUnfolder]: 1304/2691 cut-off events. [2021-06-11 20:36:03,376 INFO L130 PetriNetUnfolder]: For 30976/31062 co-relation queries the response was YES. [2021-06-11 20:36:03,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15341 conditions, 2691 events. 1304/2691 cut-off events. For 30976/31062 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 19279 event pairs, 27 based on Foata normal form. 23/2325 useless extension candidates. Maximal degree in co-relation 15182. Up to 821 conditions per place. [2021-06-11 20:36:03,420 INFO L151 LiptonReduction]: Number of co-enabled transitions 5456 [2021-06-11 20:36:03,546 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:36:03,546 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:36:03,546 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 619 [2021-06-11 20:36:03,547 INFO L480 AbstractCegarLoop]: Abstraction has has 376 places, 917 transitions, 11122 flow [2021-06-11 20:36:03,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:03,547 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:36:03,547 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] [2021-06-11 20:36:03,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-11 20:36:03,547 INFO L428 AbstractCegarLoop]: === Iteration 16 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:36:03,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:36:03,548 INFO L82 PathProgramCache]: Analyzing trace with hash -953079145, now seen corresponding path program 2 times [2021-06-11 20:36:03,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:36:03,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158428024] [2021-06-11 20:36:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:36:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:36:03,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:03,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:36:03,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:03,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:36:03,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:03,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:03,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:03,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:03,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:03,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:03,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:03,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:03,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:03,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:03,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:03,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:03,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:03,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:03,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:03,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:03,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:03,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:03,708 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:36:03,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:36:03,725 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:36:03,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:36:03,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158428024] [2021-06-11 20:36:03,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:36:03,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:36:03,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910688173] [2021-06-11 20:36:03,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:36:03,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:36:03,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:36:03,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:36:03,734 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:36:03,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 917 transitions, 11122 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:03,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:36:03,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:36:03,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:36:05,418 INFO L129 PetriNetUnfolder]: 2178/4086 cut-off events. [2021-06-11 20:36:05,419 INFO L130 PetriNetUnfolder]: For 91858/91862 co-relation queries the response was YES. [2021-06-11 20:36:05,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29694 conditions, 4086 events. 2178/4086 cut-off events. For 91858/91862 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 28291 event pairs, 193 based on Foata normal form. 5/3649 useless extension candidates. Maximal degree in co-relation 29495. Up to 2256 conditions per place. [2021-06-11 20:36:05,477 INFO L132 encePairwiseOnDemand]: 73/90 looper letters, 628 selfloop transitions, 573 changer transitions 0/1219 dead transitions. [2021-06-11 20:36:05,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1219 transitions, 18467 flow [2021-06-11 20:36:05,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-11 20:36:05,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-06-11 20:36:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1590 transitions. [2021-06-11 20:36:05,480 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2021-06-11 20:36:05,480 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1590 transitions. [2021-06-11 20:36:05,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1590 transitions. [2021-06-11 20:36:05,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:36:05,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1590 transitions. [2021-06-11 20:36:05,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.0) internal successors, (1590), 30 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:05,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:05,486 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:05,486 INFO L185 Difference]: Start difference. First operand has 376 places, 917 transitions, 11122 flow. Second operand 30 states and 1590 transitions. [2021-06-11 20:36:05,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1219 transitions, 18467 flow [2021-06-11 20:36:05,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1219 transitions, 17514 flow, removed 57 selfloop flow, removed 15 redundant places. [2021-06-11 20:36:05,969 INFO L241 Difference]: Finished difference. Result has 404 places, 1178 transitions, 16285 flow [2021-06-11 20:36:05,969 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=10471, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=917, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16285, PETRI_PLACES=404, PETRI_TRANSITIONS=1178} [2021-06-11 20:36:05,969 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 351 predicate places. [2021-06-11 20:36:05,969 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:36:05,970 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 404 places, 1178 transitions, 16285 flow [2021-06-11 20:36:05,970 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 404 places, 1178 transitions, 16285 flow [2021-06-11 20:36:05,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 404 places, 1178 transitions, 16285 flow [2021-06-11 20:36:06,459 INFO L129 PetriNetUnfolder]: 1630/3308 cut-off events. [2021-06-11 20:36:06,459 INFO L130 PetriNetUnfolder]: For 44247/44322 co-relation queries the response was YES. [2021-06-11 20:36:06,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20864 conditions, 3308 events. 1630/3308 cut-off events. For 44247/44322 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 24430 event pairs, 24 based on Foata normal form. 14/2879 useless extension candidates. Maximal degree in co-relation 20657. Up to 1038 conditions per place. [2021-06-11 20:36:06,650 INFO L151 LiptonReduction]: Number of co-enabled transitions 6310 [2021-06-11 20:36:06,847 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:36:06,847 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:36:06,847 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 878 [2021-06-11 20:36:06,848 INFO L480 AbstractCegarLoop]: Abstraction has has 404 places, 1178 transitions, 16285 flow [2021-06-11 20:36:06,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:06,848 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:36:06,848 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] [2021-06-11 20:36:06,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-11 20:36:06,848 INFO L428 AbstractCegarLoop]: === Iteration 17 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:36:06,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:36:06,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1820569861, now seen corresponding path program 3 times [2021-06-11 20:36:06,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:36:06,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684275016] [2021-06-11 20:36:06,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:36:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:36:06,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:06,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:36:06,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:06,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:36:06,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:06,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:06,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:06,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:06,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:06,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:06,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:06,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:06,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:06,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:06,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:06,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:06,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:06,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:06,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:06,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:06,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:06,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:06,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:36:06,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:36:07,008 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:36:07,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:36:07,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684275016] [2021-06-11 20:36:07,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:36:07,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:36:07,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484647516] [2021-06-11 20:36:07,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:36:07,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:36:07,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:36:07,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:36:07,012 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:36:07,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 1178 transitions, 16285 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:07,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:36:07,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:36:07,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:36:08,953 INFO L129 PetriNetUnfolder]: 2232/4236 cut-off events. [2021-06-11 20:36:08,953 INFO L130 PetriNetUnfolder]: For 103592/103596 co-relation queries the response was YES. [2021-06-11 20:36:08,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32426 conditions, 4236 events. 2232/4236 cut-off events. For 103592/103596 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 29929 event pairs, 217 based on Foata normal form. 5/3779 useless extension candidates. Maximal degree in co-relation 32211. Up to 2261 conditions per place. [2021-06-11 20:36:09,016 INFO L132 encePairwiseOnDemand]: 71/90 looper letters, 528 selfloop transitions, 717 changer transitions 5/1268 dead transitions. [2021-06-11 20:36:09,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 1268 transitions, 20334 flow [2021-06-11 20:36:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-11 20:36:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-06-11 20:36:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1593 transitions. [2021-06-11 20:36:09,018 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.59 [2021-06-11 20:36:09,018 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1593 transitions. [2021-06-11 20:36:09,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1593 transitions. [2021-06-11 20:36:09,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:36:09,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1593 transitions. [2021-06-11 20:36:09,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.1) internal successors, (1593), 30 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:09,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:09,023 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:09,023 INFO L185 Difference]: Start difference. First operand has 404 places, 1178 transitions, 16285 flow. Second operand 30 states and 1593 transitions. [2021-06-11 20:36:09,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 1268 transitions, 20334 flow [2021-06-11 20:36:09,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 1268 transitions, 19829 flow, removed 204 selfloop flow, removed 8 redundant places. [2021-06-11 20:36:09,609 INFO L241 Difference]: Finished difference. Result has 432 places, 1229 transitions, 18392 flow [2021-06-11 20:36:09,610 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=15866, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=666, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18392, PETRI_PLACES=432, PETRI_TRANSITIONS=1229} [2021-06-11 20:36:09,625 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 379 predicate places. [2021-06-11 20:36:09,625 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:36:09,625 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 432 places, 1229 transitions, 18392 flow [2021-06-11 20:36:09,625 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 432 places, 1229 transitions, 18392 flow [2021-06-11 20:36:09,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 432 places, 1229 transitions, 18392 flow [2021-06-11 20:36:10,230 INFO L129 PetriNetUnfolder]: 1671/3442 cut-off events. [2021-06-11 20:36:10,230 INFO L130 PetriNetUnfolder]: For 44616/44691 co-relation queries the response was YES. [2021-06-11 20:36:10,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22207 conditions, 3442 events. 1671/3442 cut-off events. For 44616/44691 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 26111 event pairs, 24 based on Foata normal form. 15/2996 useless extension candidates. Maximal degree in co-relation 22031. Up to 1055 conditions per place. [2021-06-11 20:36:10,324 INFO L151 LiptonReduction]: Number of co-enabled transitions 6636 [2021-06-11 20:36:10,564 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:36:10,564 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:36:10,564 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 939 [2021-06-11 20:36:10,564 INFO L480 AbstractCegarLoop]: Abstraction has has 432 places, 1229 transitions, 18392 flow [2021-06-11 20:36:10,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:10,565 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:36:10,565 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] [2021-06-11 20:36:10,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-11 20:36:10,565 INFO L428 AbstractCegarLoop]: === Iteration 18 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:36:10,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:36:10,565 INFO L82 PathProgramCache]: Analyzing trace with hash -317941633, now seen corresponding path program 4 times [2021-06-11 20:36:10,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:36:10,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448352001] [2021-06-11 20:36:10,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:36:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:36:10,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:10,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:36:10,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:10,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:36:10,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:10,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:10,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:10,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:10,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:10,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:10,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:10,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:10,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:10,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:10,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:10,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:10,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:10,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:10,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:10,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:10,763 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:36:10,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:36:10,780 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:36:10,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:36:10,798 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:36:10,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:36:10,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448352001] [2021-06-11 20:36:10,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:36:10,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:36:10,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74898642] [2021-06-11 20:36:10,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:36:10,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:36:10,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:36:10,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:36:10,802 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:36:10,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 1229 transitions, 18392 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:10,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:36:10,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:36:10,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:36:12,765 INFO L129 PetriNetUnfolder]: 2257/4334 cut-off events. [2021-06-11 20:36:12,765 INFO L130 PetriNetUnfolder]: For 99574/99576 co-relation queries the response was YES. [2021-06-11 20:36:12,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33135 conditions, 4334 events. 2257/4334 cut-off events. For 99574/99576 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 31215 event pairs, 208 based on Foata normal form. 4/3846 useless extension candidates. Maximal degree in co-relation 32885. Up to 2279 conditions per place. [2021-06-11 20:36:12,828 INFO L132 encePairwiseOnDemand]: 71/90 looper letters, 504 selfloop transitions, 755 changer transitions 0/1277 dead transitions. [2021-06-11 20:36:12,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 1277 transitions, 21786 flow [2021-06-11 20:36:12,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-11 20:36:12,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-06-11 20:36:12,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1599 transitions. [2021-06-11 20:36:12,830 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5922222222222222 [2021-06-11 20:36:12,830 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1599 transitions. [2021-06-11 20:36:12,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1599 transitions. [2021-06-11 20:36:12,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:36:12,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1599 transitions. [2021-06-11 20:36:12,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.3) internal successors, (1599), 30 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:12,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:12,835 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:12,835 INFO L185 Difference]: Start difference. First operand has 432 places, 1229 transitions, 18392 flow. Second operand 30 states and 1599 transitions. [2021-06-11 20:36:12,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 1277 transitions, 21786 flow [2021-06-11 20:36:13,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 1277 transitions, 21130 flow, removed 166 selfloop flow, removed 10 redundant places. [2021-06-11 20:36:13,398 INFO L241 Difference]: Finished difference. Result has 456 places, 1244 transitions, 19698 flow [2021-06-11 20:36:13,399 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=17802, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=740, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=19698, PETRI_PLACES=456, PETRI_TRANSITIONS=1244} [2021-06-11 20:36:13,400 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 403 predicate places. [2021-06-11 20:36:13,400 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:36:13,400 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 456 places, 1244 transitions, 19698 flow [2021-06-11 20:36:13,400 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 456 places, 1244 transitions, 19698 flow [2021-06-11 20:36:13,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 456 places, 1244 transitions, 19698 flow [2021-06-11 20:36:13,665 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][680], [Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 233#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), 6#L91true, Black: 203#(and (= y_1 y_7) (= x_6 x_0)), Black: 235#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 237#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 768#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 772#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 774#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 207#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 255#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= temp_11 temp_5) (<= y_1 (+ temp_10 1)) (<= temp_5 temp_11) (= x_6 x_0)), Black: 745#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 239#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 764#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), 269#true, 781#true, Black: 483#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 x_0) (<= y_7 temp_4)), Black: 515#(and (<= temp_4 temp_10) (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 487#(and (<= temp_4 temp_10) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 456#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 489#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 459#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 523#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (= x_6 x_0)), Black: 460#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 23#L62true, Black: 495#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 465#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 469#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 471#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 507#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 475#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= x_6 x_0) (<= y_7 temp_4)), Black: 477#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 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(+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 732#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (= x_6 x_0)), 735#true]) [2021-06-11 20:36:13,666 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:36:13,666 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:36:13,666 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:36:13,666 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:36:13,886 INFO L129 PetriNetUnfolder]: 1665/3469 cut-off events. [2021-06-11 20:36:13,886 INFO L130 PetriNetUnfolder]: For 47446/47505 co-relation queries the response was YES. [2021-06-11 20:36:13,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23389 conditions, 3469 events. 1665/3469 cut-off events. For 47446/47505 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 26691 event pairs, 23 based on Foata normal form. 15/3021 useless extension candidates. Maximal degree in co-relation 23138. Up to 1045 conditions per place. [2021-06-11 20:36:13,961 INFO L151 LiptonReduction]: Number of co-enabled transitions 6776 [2021-06-11 20:36:14,163 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:36:14,164 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:36:14,164 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 764 [2021-06-11 20:36:14,164 INFO L480 AbstractCegarLoop]: Abstraction has has 456 places, 1244 transitions, 19698 flow [2021-06-11 20:36:14,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:14,165 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:36:14,165 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] [2021-06-11 20:36:14,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-11 20:36:14,165 INFO L428 AbstractCegarLoop]: === Iteration 19 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:36:14,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:36:14,165 INFO L82 PathProgramCache]: Analyzing trace with hash 598321119, now seen corresponding path program 5 times [2021-06-11 20:36:14,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:36:14,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275853137] [2021-06-11 20:36:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:36:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:36:14,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:14,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:36:14,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:14,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:36:14,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:14,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:14,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:14,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:14,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:14,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:14,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:14,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:14,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:14,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:14,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:14,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:14,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:14,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:14,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:14,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:14,315 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:36:14,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:36:14,334 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:36:14,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:36:14,355 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:36:14,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:36:14,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275853137] [2021-06-11 20:36:14,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:36:14,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:36:14,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530969353] [2021-06-11 20:36:14,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:36:14,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:36:14,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:36:14,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:36:14,359 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:36:14,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 1244 transitions, 19698 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:14,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:36:14,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:36:14,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:36:16,426 INFO L129 PetriNetUnfolder]: 2257/4353 cut-off events. [2021-06-11 20:36:16,426 INFO L130 PetriNetUnfolder]: For 100977/100981 co-relation queries the response was YES. [2021-06-11 20:36:16,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34200 conditions, 4353 events. 2257/4353 cut-off events. For 100977/100981 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 31479 event pairs, 194 based on Foata normal form. 5/3864 useless extension candidates. Maximal degree in co-relation 33933. Up to 2341 conditions per place. [2021-06-11 20:36:16,513 INFO L132 encePairwiseOnDemand]: 73/90 looper letters, 686 selfloop transitions, 584 changer transitions 0/1288 dead transitions. [2021-06-11 20:36:16,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 1288 transitions, 23045 flow [2021-06-11 20:36:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-11 20:36:16,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-06-11 20:36:16,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1590 transitions. [2021-06-11 20:36:16,515 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2021-06-11 20:36:16,515 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1590 transitions. [2021-06-11 20:36:16,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1590 transitions. [2021-06-11 20:36:16,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:36:16,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1590 transitions. [2021-06-11 20:36:16,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.0) internal successors, (1590), 30 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:16,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:16,520 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:16,520 INFO L185 Difference]: Start difference. First operand has 456 places, 1244 transitions, 19698 flow. Second operand 30 states and 1590 transitions. [2021-06-11 20:36:16,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 1288 transitions, 23045 flow [2021-06-11 20:36:17,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 1288 transitions, 21702 flow, removed 20 selfloop flow, removed 21 redundant places. [2021-06-11 20:36:17,105 INFO L241 Difference]: Finished difference. Result has 468 places, 1250 transitions, 19634 flow [2021-06-11 20:36:17,106 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=18357, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=578, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=19634, PETRI_PLACES=468, PETRI_TRANSITIONS=1250} [2021-06-11 20:36:17,107 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 415 predicate places. [2021-06-11 20:36:17,107 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:36:17,107 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 468 places, 1250 transitions, 19634 flow [2021-06-11 20:36:17,107 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 468 places, 1250 transitions, 19634 flow [2021-06-11 20:36:17,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 468 places, 1250 transitions, 19634 flow [2021-06-11 20:36:17,458 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][681], [Black: 981#(and (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 1017#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 1021#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (= x_6 x_0)), Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 233#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 203#(and (= y_1 y_7) (= x_6 x_0)), 6#L91true, Black: 235#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 237#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 768#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 772#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 207#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 774#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 745#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 255#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= temp_11 temp_5) (<= y_1 (+ temp_10 1)) (<= temp_5 temp_11) (= x_6 x_0)), Black: 239#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 764#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), 269#true, 781#true, Black: 483#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 x_0) (<= y_7 temp_4)), Black: 515#(and (<= temp_4 temp_10) (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 487#(and (<= temp_4 temp_10) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 456#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 489#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 459#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 523#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (= x_6 x_0)), Black: 460#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 23#L62true, Black: 495#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 465#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 469#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 471#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 507#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 475#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= x_6 x_0) (<= y_7 temp_4)), Black: 477#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 479#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 temp_4) (= x_6 x_0)), 544#true, 61#L30true, Black: 304#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 274#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 306#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 275#(and (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 800#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 276#(and (<= (+ y_7 1) temp_4) (<= temp_4 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 294#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), Black: 832#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (= x_6 x_0)), 67#thread6EXITtrue, Black: 804#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 280#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 808#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 316#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 812#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 70#thread3EXITtrue, Black: 284#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), Black: 814#(and (<= x_0 temp_11) (<= x_6 (+ temp_5 1)) (<= temp_11 x_0) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), Black: 818#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 300#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 820#(and (<= 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x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 939#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), 201#true, Black: 959#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), 970#true, Black: 732#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (= x_6 x_0)), 735#true, Black: 1011#(and (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11))]) [2021-06-11 20:36:17,459 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:36:17,459 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:36:17,459 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:36:17,459 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:36:17,706 INFO L129 PetriNetUnfolder]: 1677/3518 cut-off events. [2021-06-11 20:36:17,706 INFO L130 PetriNetUnfolder]: For 47231/47307 co-relation queries the response was YES. [2021-06-11 20:36:17,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23277 conditions, 3518 events. 1677/3518 cut-off events. For 47231/47307 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 27166 event pairs, 24 based on Foata normal form. 14/3049 useless extension candidates. Maximal degree in co-relation 23089. Up to 1037 conditions per place. [2021-06-11 20:36:17,793 INFO L151 LiptonReduction]: Number of co-enabled transitions 6830 [2021-06-11 20:36:18,017 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:36:18,017 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:36:18,017 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 910 [2021-06-11 20:36:18,018 INFO L480 AbstractCegarLoop]: Abstraction has has 468 places, 1250 transitions, 19634 flow [2021-06-11 20:36:18,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:18,018 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:36:18,018 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] [2021-06-11 20:36:18,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-11 20:36:18,019 INFO L428 AbstractCegarLoop]: === Iteration 20 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:36:18,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:36:18,019 INFO L82 PathProgramCache]: Analyzing trace with hash -995872153, now seen corresponding path program 6 times [2021-06-11 20:36:18,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:36:18,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419839258] [2021-06-11 20:36:18,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:36:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:36:18,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:18,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:36:18,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:18,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:36:18,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:18,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:18,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:18,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:18,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:18,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:18,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:18,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:18,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:18,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:18,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:18,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:18,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:18,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:18,150 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:36:18,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:36:18,168 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:36:18,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:36:18,185 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:36:18,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:36:18,203 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:36:18,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:36:18,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419839258] [2021-06-11 20:36:18,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:36:18,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:36:18,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205673986] [2021-06-11 20:36:18,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:36:18,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:36:18,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:36:18,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:36:18,207 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:36:18,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1250 transitions, 19634 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:18,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:36:18,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:36:18,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:36:20,684 INFO L129 PetriNetUnfolder]: 2416/4635 cut-off events. [2021-06-11 20:36:20,684 INFO L130 PetriNetUnfolder]: For 108095/108099 co-relation queries the response was YES. [2021-06-11 20:36:20,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37181 conditions, 4635 events. 2416/4635 cut-off events. For 108095/108099 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 33864 event pairs, 216 based on Foata normal form. 5/4116 useless extension candidates. Maximal degree in co-relation 36942. Up to 2392 conditions per place. [2021-06-11 20:36:20,776 INFO L132 encePairwiseOnDemand]: 71/90 looper letters, 520 selfloop transitions, 840 changer transitions 0/1378 dead transitions. [2021-06-11 20:36:20,776 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 1378 transitions, 25367 flow [2021-06-11 20:36:20,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-11 20:36:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-06-11 20:36:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1658 transitions. [2021-06-11 20:36:20,778 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5942652329749104 [2021-06-11 20:36:20,778 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1658 transitions. [2021-06-11 20:36:20,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1658 transitions. [2021-06-11 20:36:20,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:36:20,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1658 transitions. [2021-06-11 20:36:20,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.483870967741936) internal successors, (1658), 31 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:20,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 90.0) internal successors, (2880), 32 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:20,782 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 90.0) internal successors, (2880), 32 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:20,782 INFO L185 Difference]: Start difference. First operand has 468 places, 1250 transitions, 19634 flow. Second operand 31 states and 1658 transitions. [2021-06-11 20:36:20,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 1378 transitions, 25367 flow [2021-06-11 20:36:21,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1378 transitions, 24101 flow, removed 12 selfloop flow, removed 23 redundant places. [2021-06-11 20:36:21,567 INFO L241 Difference]: Finished difference. Result has 484 places, 1342 transitions, 22584 flow [2021-06-11 20:36:21,568 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=18482, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=753, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=22584, PETRI_PLACES=484, PETRI_TRANSITIONS=1342} [2021-06-11 20:36:21,568 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 431 predicate places. [2021-06-11 20:36:21,568 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:36:21,568 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 484 places, 1342 transitions, 22584 flow [2021-06-11 20:36:21,568 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 484 places, 1342 transitions, 22584 flow [2021-06-11 20:36:21,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 484 places, 1342 transitions, 22584 flow [2021-06-11 20:36:22,278 INFO L129 PetriNetUnfolder]: 1846/3832 cut-off events. [2021-06-11 20:36:22,279 INFO L130 PetriNetUnfolder]: For 61075/61150 co-relation queries the response was YES. [2021-06-11 20:36:22,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27314 conditions, 3832 events. 1846/3832 cut-off events. For 61075/61150 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 29888 event pairs, 22 based on Foata normal form. 12/3331 useless extension candidates. Maximal degree in co-relation 27070. Up to 1170 conditions per place. [2021-06-11 20:36:22,392 INFO L151 LiptonReduction]: Number of co-enabled transitions 7060 [2021-06-11 20:36:22,674 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:36:22,674 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:36:22,674 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1106 [2021-06-11 20:36:22,675 INFO L480 AbstractCegarLoop]: Abstraction has has 484 places, 1342 transitions, 22584 flow [2021-06-11 20:36:22,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:22,675 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:36:22,675 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] [2021-06-11 20:36:22,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-11 20:36:22,675 INFO L428 AbstractCegarLoop]: === Iteration 21 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:36:22,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:36:22,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1281225243, now seen corresponding path program 7 times [2021-06-11 20:36:22,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:36:22,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834465599] [2021-06-11 20:36:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:36:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:36:22,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:22,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:36:22,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:22,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:36:22,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:22,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:22,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:22,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:22,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:22,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:22,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:22,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:22,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:22,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:22,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:22,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:22,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:22,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:22,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:22,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:22,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:22,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:22,831 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:36:22,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:36:22,850 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:36:22,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:36:22,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834465599] [2021-06-11 20:36:22,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:36:22,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:36:22,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291135178] [2021-06-11 20:36:22,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:36:22,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:36:22,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:36:22,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:36:22,856 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:36:22,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 1342 transitions, 22584 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:22,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:36:22,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:36:22,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:36:25,362 INFO L129 PetriNetUnfolder]: 2458/4700 cut-off events. [2021-06-11 20:36:25,362 INFO L130 PetriNetUnfolder]: For 130001/130009 co-relation queries the response was YES. [2021-06-11 20:36:25,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39461 conditions, 4700 events. 2458/4700 cut-off events. For 130001/130009 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 34315 event pairs, 213 based on Foata normal form. 9/4186 useless extension candidates. Maximal degree in co-relation 39259. Up to 2492 conditions per place. [2021-06-11 20:36:25,461 INFO L132 encePairwiseOnDemand]: 71/90 looper letters, 540 selfloop transitions, 843 changer transitions 0/1401 dead transitions. [2021-06-11 20:36:25,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 1401 transitions, 26613 flow [2021-06-11 20:36:25,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-11 20:36:25,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-06-11 20:36:25,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1554 transitions. [2021-06-11 20:36:25,464 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5954022988505747 [2021-06-11 20:36:25,465 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1554 transitions. [2021-06-11 20:36:25,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1554 transitions. [2021-06-11 20:36:25,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:36:25,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1554 transitions. [2021-06-11 20:36:25,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.58620689655172) internal successors, (1554), 29 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:25,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 90.0) internal successors, (2700), 30 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:25,470 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 90.0) internal successors, (2700), 30 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:25,470 INFO L185 Difference]: Start difference. First operand has 484 places, 1342 transitions, 22584 flow. Second operand 29 states and 1554 transitions. [2021-06-11 20:36:25,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 1401 transitions, 26613 flow [2021-06-11 20:36:26,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 1401 transitions, 25865 flow, removed 328 selfloop flow, removed 8 redundant places. [2021-06-11 20:36:26,589 INFO L241 Difference]: Finished difference. Result has 510 places, 1381 transitions, 24491 flow [2021-06-11 20:36:26,590 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=21856, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=808, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=24491, PETRI_PLACES=510, PETRI_TRANSITIONS=1381} [2021-06-11 20:36:26,591 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 457 predicate places. [2021-06-11 20:36:26,591 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:36:26,591 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 510 places, 1381 transitions, 24491 flow [2021-06-11 20:36:26,591 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 510 places, 1381 transitions, 24491 flow [2021-06-11 20:36:26,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 510 places, 1381 transitions, 24491 flow [2021-06-11 20:36:27,310 INFO L129 PetriNetUnfolder]: 1912/3926 cut-off events. [2021-06-11 20:36:27,311 INFO L130 PetriNetUnfolder]: For 71188/71240 co-relation queries the response was YES. [2021-06-11 20:36:27,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29288 conditions, 3926 events. 1912/3926 cut-off events. For 71188/71240 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 30379 event pairs, 26 based on Foata normal form. 8/3407 useless extension candidates. Maximal degree in co-relation 29082. Up to 1205 conditions per place. [2021-06-11 20:36:27,410 INFO L151 LiptonReduction]: Number of co-enabled transitions 7102 [2021-06-11 20:36:27,702 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:36:27,702 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:36:27,702 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1111 [2021-06-11 20:36:27,703 INFO L480 AbstractCegarLoop]: Abstraction has has 510 places, 1381 transitions, 24491 flow [2021-06-11 20:36:27,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:27,703 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:36:27,703 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] [2021-06-11 20:36:27,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-11 20:36:27,704 INFO L428 AbstractCegarLoop]: === Iteration 22 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:36:27,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:36:27,704 INFO L82 PathProgramCache]: Analyzing trace with hash -639246605, now seen corresponding path program 8 times [2021-06-11 20:36:27,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:36:27,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842471979] [2021-06-11 20:36:27,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:36:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:36:27,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:27,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:36:27,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:27,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:36:27,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:27,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:27,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:27,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:27,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:27,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:27,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:27,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:27,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:27,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:27,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:27,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:27,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:27,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:27,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:27,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:27,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:27,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:27,866 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:36:27,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:36:27,889 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:36:27,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:36:27,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842471979] [2021-06-11 20:36:27,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:36:27,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:36:27,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034477617] [2021-06-11 20:36:27,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:36:27,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:36:27,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:36:27,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:36:27,893 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:36:27,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 1381 transitions, 24491 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:27,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:36:27,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:36:27,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:36:30,276 INFO L129 PetriNetUnfolder]: 2466/4739 cut-off events. [2021-06-11 20:36:30,276 INFO L130 PetriNetUnfolder]: For 140946/140956 co-relation queries the response was YES. [2021-06-11 20:36:30,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40739 conditions, 4739 events. 2466/4739 cut-off events. For 140946/140956 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 34769 event pairs, 230 based on Foata normal form. 11/4217 useless extension candidates. Maximal degree in co-relation 40444. Up to 2444 conditions per place. [2021-06-11 20:36:30,358 INFO L132 encePairwiseOnDemand]: 71/90 looper letters, 574 selfloop transitions, 822 changer transitions 0/1414 dead transitions. [2021-06-11 20:36:30,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 1414 transitions, 27870 flow [2021-06-11 20:36:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-11 20:36:30,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-06-11 20:36:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1749 transitions. [2021-06-11 20:36:30,360 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2021-06-11 20:36:30,360 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1749 transitions. [2021-06-11 20:36:30,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1749 transitions. [2021-06-11 20:36:30,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:36:30,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1749 transitions. [2021-06-11 20:36:30,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.0) internal successors, (1749), 33 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:30,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 90.0) internal successors, (3060), 34 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:30,364 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 90.0) internal successors, (3060), 34 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:30,364 INFO L185 Difference]: Start difference. First operand has 510 places, 1381 transitions, 24491 flow. Second operand 33 states and 1749 transitions. [2021-06-11 20:36:30,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 1414 transitions, 27870 flow [2021-06-11 20:36:31,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 1414 transitions, 26463 flow, removed 222 selfloop flow, removed 17 redundant places. [2021-06-11 20:36:31,309 INFO L241 Difference]: Finished difference. Result has 528 places, 1385 transitions, 24827 flow [2021-06-11 20:36:31,310 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=23086, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=818, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=24827, PETRI_PLACES=528, PETRI_TRANSITIONS=1385} [2021-06-11 20:36:31,310 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 475 predicate places. [2021-06-11 20:36:31,310 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:36:31,310 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 528 places, 1385 transitions, 24827 flow [2021-06-11 20:36:31,311 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 528 places, 1385 transitions, 24827 flow [2021-06-11 20:36:31,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 528 places, 1385 transitions, 24827 flow [2021-06-11 20:36:32,022 INFO L129 PetriNetUnfolder]: 1914/3962 cut-off events. [2021-06-11 20:36:32,022 INFO L130 PetriNetUnfolder]: For 70724/70795 co-relation queries the response was YES. [2021-06-11 20:36:32,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29961 conditions, 3962 events. 1914/3962 cut-off events. For 70724/70795 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 31088 event pairs, 23 based on Foata normal form. 11/3439 useless extension candidates. Maximal degree in co-relation 29696. Up to 1202 conditions per place. [2021-06-11 20:36:32,109 INFO L151 LiptonReduction]: Number of co-enabled transitions 7138 [2021-06-11 20:36:32,429 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:36:32,430 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:36:32,430 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1120 [2021-06-11 20:36:32,430 INFO L480 AbstractCegarLoop]: Abstraction has has 528 places, 1385 transitions, 24827 flow [2021-06-11 20:36:32,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:32,430 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:36:32,430 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] [2021-06-11 20:36:32,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-11 20:36:32,430 INFO L428 AbstractCegarLoop]: === Iteration 23 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:36:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:36:32,431 INFO L82 PathProgramCache]: Analyzing trace with hash -908775377, now seen corresponding path program 9 times [2021-06-11 20:36:32,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:36:32,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180193722] [2021-06-11 20:36:32,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:36:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:36:32,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:32,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:36:32,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:32,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:36:32,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:32,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:32,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:32,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:32,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:32,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:32,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:32,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:32,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:32,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:32,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:32,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:32,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:32,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:32,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:32,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:32,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:32,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:32,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:36:32,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:36:32,591 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:36:32,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:36:32,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180193722] [2021-06-11 20:36:32,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:36:32,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:36:32,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415102380] [2021-06-11 20:36:32,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:36:32,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:36:32,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:36:32,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:36:32,602 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:36:32,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 1385 transitions, 24827 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:32,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:36:32,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:36:32,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:36:34,695 INFO L129 PetriNetUnfolder]: 2469/4739 cut-off events. [2021-06-11 20:36:34,695 INFO L130 PetriNetUnfolder]: For 136064/136066 co-relation queries the response was YES. [2021-06-11 20:36:34,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41037 conditions, 4739 events. 2469/4739 cut-off events. For 136064/136066 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 34772 event pairs, 205 based on Foata normal form. 3/4206 useless extension candidates. Maximal degree in co-relation 40820. Up to 2560 conditions per place. [2021-06-11 20:36:34,778 INFO L132 encePairwiseOnDemand]: 73/90 looper letters, 765 selfloop transitions, 639 changer transitions 0/1422 dead transitions. [2021-06-11 20:36:34,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 1422 transitions, 28319 flow [2021-06-11 20:36:34,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-11 20:36:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-06-11 20:36:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1487 transitions. [2021-06-11 20:36:34,779 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5900793650793651 [2021-06-11 20:36:34,779 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1487 transitions. [2021-06-11 20:36:34,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1487 transitions. [2021-06-11 20:36:34,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:36:34,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1487 transitions. [2021-06-11 20:36:34,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 53.107142857142854) internal successors, (1487), 28 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:34,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 90.0) internal successors, (2610), 29 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:34,783 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 90.0) internal successors, (2610), 29 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:34,783 INFO L185 Difference]: Start difference. First operand has 528 places, 1385 transitions, 24827 flow. Second operand 28 states and 1487 transitions. [2021-06-11 20:36:34,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 1422 transitions, 28319 flow [2021-06-11 20:36:35,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 1422 transitions, 26777 flow, removed 30 selfloop flow, removed 23 redundant places. [2021-06-11 20:36:35,661 INFO L241 Difference]: Finished difference. Result has 535 places, 1387 transitions, 24612 flow [2021-06-11 20:36:35,662 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=23286, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=637, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=746, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=24612, PETRI_PLACES=535, PETRI_TRANSITIONS=1387} [2021-06-11 20:36:35,662 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 482 predicate places. [2021-06-11 20:36:35,662 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:36:35,662 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 535 places, 1387 transitions, 24612 flow [2021-06-11 20:36:35,662 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 535 places, 1387 transitions, 24612 flow [2021-06-11 20:36:35,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 535 places, 1387 transitions, 24612 flow [2021-06-11 20:36:36,277 INFO L129 PetriNetUnfolder]: 1934/3959 cut-off events. [2021-06-11 20:36:36,277 INFO L130 PetriNetUnfolder]: For 69640/69730 co-relation queries the response was YES. [2021-06-11 20:36:36,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29981 conditions, 3959 events. 1934/3959 cut-off events. For 69640/69730 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 30660 event pairs, 26 based on Foata normal form. 12/3442 useless extension candidates. Maximal degree in co-relation 29725. Up to 1223 conditions per place. [2021-06-11 20:36:36,369 INFO L151 LiptonReduction]: Number of co-enabled transitions 7152 [2021-06-11 20:36:36,631 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:36:36,632 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:36:36,632 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 970 [2021-06-11 20:36:36,632 INFO L480 AbstractCegarLoop]: Abstraction has has 535 places, 1387 transitions, 24612 flow [2021-06-11 20:36:36,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:36,633 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:36:36,633 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] [2021-06-11 20:36:36,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-11 20:36:36,633 INFO L428 AbstractCegarLoop]: === Iteration 24 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:36:36,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:36:36,633 INFO L82 PathProgramCache]: Analyzing trace with hash -907993033, now seen corresponding path program 10 times [2021-06-11 20:36:36,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:36:36,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494457636] [2021-06-11 20:36:36,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:36:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:36:36,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:36,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:36:36,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:36,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:36:36,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:36,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:36,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:36,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:36,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:36,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:36,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:36,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:36,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:36,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:36,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:36,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:36,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:36,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:36,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:36,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:36,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:36,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:36,787 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:36:36,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:36:36,808 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:36:36,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:36:36,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494457636] [2021-06-11 20:36:36,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:36:36,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:36:36,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803931912] [2021-06-11 20:36:36,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:36:36,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:36:36,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:36:36,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:36:36,815 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:36:36,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 1387 transitions, 24612 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:36,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:36:36,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:36:36,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:36:39,070 INFO L129 PetriNetUnfolder]: 2471/4750 cut-off events. [2021-06-11 20:36:39,070 INFO L130 PetriNetUnfolder]: For 135715/135717 co-relation queries the response was YES. [2021-06-11 20:36:39,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40935 conditions, 4750 events. 2471/4750 cut-off events. For 135715/135717 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 34895 event pairs, 201 based on Foata normal form. 3/4214 useless extension candidates. Maximal degree in co-relation 40715. Up to 2503 conditions per place. [2021-06-11 20:36:39,168 INFO L132 encePairwiseOnDemand]: 73/90 looper letters, 718 selfloop transitions, 687 changer transitions 0/1423 dead transitions. [2021-06-11 20:36:39,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 1423 transitions, 28085 flow [2021-06-11 20:36:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-11 20:36:39,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-06-11 20:36:39,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1594 transitions. [2021-06-11 20:36:39,170 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903703703703703 [2021-06-11 20:36:39,170 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1594 transitions. [2021-06-11 20:36:39,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1594 transitions. [2021-06-11 20:36:39,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:36:39,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1594 transitions. [2021-06-11 20:36:39,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.13333333333333) internal successors, (1594), 30 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:39,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:39,173 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:39,174 INFO L185 Difference]: Start difference. First operand has 535 places, 1387 transitions, 24612 flow. Second operand 30 states and 1594 transitions. [2021-06-11 20:36:39,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 1423 transitions, 28085 flow [2021-06-11 20:36:39,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 1423 transitions, 27023 flow, removed 6 selfloop flow, removed 21 redundant places. [2021-06-11 20:36:39,957 INFO L241 Difference]: Finished difference. Result has 545 places, 1388 transitions, 24945 flow [2021-06-11 20:36:39,958 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=23550, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=686, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=24945, PETRI_PLACES=545, PETRI_TRANSITIONS=1388} [2021-06-11 20:36:39,958 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 492 predicate places. [2021-06-11 20:36:39,958 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:36:39,958 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 545 places, 1388 transitions, 24945 flow [2021-06-11 20:36:39,958 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 545 places, 1388 transitions, 24945 flow [2021-06-11 20:36:39,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 545 places, 1388 transitions, 24945 flow [2021-06-11 20:36:40,581 INFO L129 PetriNetUnfolder]: 1907/3949 cut-off events. [2021-06-11 20:36:40,582 INFO L130 PetriNetUnfolder]: For 70933/70971 co-relation queries the response was YES. [2021-06-11 20:36:40,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29930 conditions, 3949 events. 1907/3949 cut-off events. For 70933/70971 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 30918 event pairs, 25 based on Foata normal form. 10/3428 useless extension candidates. Maximal degree in co-relation 29701. Up to 1184 conditions per place. [2021-06-11 20:36:40,676 INFO L151 LiptonReduction]: Number of co-enabled transitions 7162 [2021-06-11 20:36:40,944 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:36:40,944 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:36:40,944 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 986 [2021-06-11 20:36:40,945 INFO L480 AbstractCegarLoop]: Abstraction has has 545 places, 1388 transitions, 24945 flow [2021-06-11 20:36:40,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:40,945 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:36:40,945 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] [2021-06-11 20:36:40,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-11 20:36:40,945 INFO L428 AbstractCegarLoop]: === Iteration 25 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:36:40,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:36:40,946 INFO L82 PathProgramCache]: Analyzing trace with hash 372575685, now seen corresponding path program 11 times [2021-06-11 20:36:40,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:36:40,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688482178] [2021-06-11 20:36:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:36:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:36:40,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:40,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:36:40,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:40,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:36:40,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:40,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:40,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:40,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:40,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:40,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:41,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:41,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:41,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:41,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:41,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:41,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:41,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:41,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:41,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:41,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:41,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:41,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:41,095 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:36:41,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:36:41,114 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:36:41,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:41,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:36:41,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688482178] [2021-06-11 20:36:41,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:36:41,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:36:41,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169625251] [2021-06-11 20:36:41,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:36:41,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:36:41,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:36:41,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:36:41,119 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:36:41,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 1388 transitions, 24945 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:41,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:36:41,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:36:41,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:36:43,402 INFO L129 PetriNetUnfolder]: 2467/4737 cut-off events. [2021-06-11 20:36:43,402 INFO L130 PetriNetUnfolder]: For 137003/137013 co-relation queries the response was YES. [2021-06-11 20:36:43,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41191 conditions, 4737 events. 2467/4737 cut-off events. For 137003/137013 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 34789 event pairs, 202 based on Foata normal form. 11/4213 useless extension candidates. Maximal degree in co-relation 40968. Up to 2503 conditions per place. [2021-06-11 20:36:43,480 INFO L132 encePairwiseOnDemand]: 73/90 looper letters, 717 selfloop transitions, 687 changer transitions 0/1422 dead transitions. [2021-06-11 20:36:43,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 1422 transitions, 28368 flow [2021-06-11 20:36:43,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-11 20:36:43,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-06-11 20:36:43,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1593 transitions. [2021-06-11 20:36:43,482 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.59 [2021-06-11 20:36:43,482 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1593 transitions. [2021-06-11 20:36:43,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1593 transitions. [2021-06-11 20:36:43,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:36:43,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1593 transitions. [2021-06-11 20:36:43,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.1) internal successors, (1593), 30 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:43,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:43,485 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:43,485 INFO L185 Difference]: Start difference. First operand has 545 places, 1388 transitions, 24945 flow. Second operand 30 states and 1593 transitions. [2021-06-11 20:36:43,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 1422 transitions, 28368 flow [2021-06-11 20:36:44,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 1422 transitions, 27149 flow, removed 8 selfloop flow, removed 21 redundant places. [2021-06-11 20:36:44,237 INFO L241 Difference]: Finished difference. Result has 554 places, 1388 transitions, 25103 flow [2021-06-11 20:36:44,238 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=23726, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=687, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=25103, PETRI_PLACES=554, PETRI_TRANSITIONS=1388} [2021-06-11 20:36:44,238 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 501 predicate places. [2021-06-11 20:36:44,238 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:36:44,238 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 554 places, 1388 transitions, 25103 flow [2021-06-11 20:36:44,238 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 554 places, 1388 transitions, 25103 flow [2021-06-11 20:36:44,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 554 places, 1388 transitions, 25103 flow [2021-06-11 20:36:44,854 INFO L129 PetriNetUnfolder]: 1934/3979 cut-off events. [2021-06-11 20:36:44,854 INFO L130 PetriNetUnfolder]: For 72521/72565 co-relation queries the response was YES. [2021-06-11 20:36:44,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30242 conditions, 3979 events. 1934/3979 cut-off events. For 72521/72565 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 31053 event pairs, 25 based on Foata normal form. 10/3456 useless extension candidates. Maximal degree in co-relation 29994. Up to 1220 conditions per place. [2021-06-11 20:36:44,946 INFO L151 LiptonReduction]: Number of co-enabled transitions 7162 [2021-06-11 20:36:45,209 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:36:45,209 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:36:45,209 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 971 [2021-06-11 20:36:45,209 INFO L480 AbstractCegarLoop]: Abstraction has has 554 places, 1388 transitions, 25103 flow [2021-06-11 20:36:45,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:45,210 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:36:45,210 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] [2021-06-11 20:36:45,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-11 20:36:45,210 INFO L428 AbstractCegarLoop]: === Iteration 26 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:36:45,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:36:45,210 INFO L82 PathProgramCache]: Analyzing trace with hash -371733109, now seen corresponding path program 12 times [2021-06-11 20:36:45,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:36:45,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504029264] [2021-06-11 20:36:45,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:36:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:36:45,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:45,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:36:45,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:45,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:36:45,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:45,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:45,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:45,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:45,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:45,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:45,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:45,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:45,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:45,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:45,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:45,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:45,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:45,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:45,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:45,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:45,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:45,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:45,377 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:36:45,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:36:45,395 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:36:45,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:36:45,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504029264] [2021-06-11 20:36:45,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:36:45,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:36:45,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957589661] [2021-06-11 20:36:45,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:36:45,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:36:45,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:36:45,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:36:45,400 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:36:45,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 1388 transitions, 25103 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:45,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:36:45,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:36:45,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:36:47,654 INFO L129 PetriNetUnfolder]: 2474/4746 cut-off events. [2021-06-11 20:36:47,654 INFO L130 PetriNetUnfolder]: For 137738/137742 co-relation queries the response was YES. [2021-06-11 20:36:47,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41262 conditions, 4746 events. 2474/4746 cut-off events. For 137738/137742 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 34808 event pairs, 232 based on Foata normal form. 5/4215 useless extension candidates. Maximal degree in co-relation 41007. Up to 2551 conditions per place. [2021-06-11 20:36:47,740 INFO L132 encePairwiseOnDemand]: 71/90 looper letters, 584 selfloop transitions, 815 changer transitions 0/1417 dead transitions. [2021-06-11 20:36:47,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 1417 transitions, 28498 flow [2021-06-11 20:36:47,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-11 20:36:47,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-06-11 20:36:47,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1444 transitions. [2021-06-11 20:36:47,748 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594238683127572 [2021-06-11 20:36:47,748 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1444 transitions. [2021-06-11 20:36:47,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1444 transitions. [2021-06-11 20:36:47,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:36:47,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1444 transitions. [2021-06-11 20:36:47,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 53.48148148148148) internal successors, (1444), 27 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:47,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 90.0) internal successors, (2520), 28 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:47,752 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 90.0) internal successors, (2520), 28 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:47,752 INFO L185 Difference]: Start difference. First operand has 554 places, 1388 transitions, 25103 flow. Second operand 27 states and 1444 transitions. [2021-06-11 20:36:47,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 1417 transitions, 28498 flow [2021-06-11 20:36:48,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 1417 transitions, 27114 flow, removed 1 selfloop flow, removed 28 redundant places. [2021-06-11 20:36:48,535 INFO L241 Difference]: Finished difference. Result has 557 places, 1397 transitions, 25610 flow [2021-06-11 20:36:48,535 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=23723, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=806, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=25610, PETRI_PLACES=557, PETRI_TRANSITIONS=1397} [2021-06-11 20:36:48,536 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 504 predicate places. [2021-06-11 20:36:48,536 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:36:48,536 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 557 places, 1397 transitions, 25610 flow [2021-06-11 20:36:48,536 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 557 places, 1397 transitions, 25610 flow [2021-06-11 20:36:48,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 557 places, 1397 transitions, 25610 flow [2021-06-11 20:36:49,169 INFO L129 PetriNetUnfolder]: 1889/3885 cut-off events. [2021-06-11 20:36:49,170 INFO L130 PetriNetUnfolder]: For 72579/72616 co-relation queries the response was YES. [2021-06-11 20:36:49,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29974 conditions, 3885 events. 1889/3885 cut-off events. For 72579/72616 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 30170 event pairs, 18 based on Foata normal form. 8/3382 useless extension candidates. Maximal degree in co-relation 29753. Up to 1192 conditions per place. [2021-06-11 20:36:49,260 INFO L151 LiptonReduction]: Number of co-enabled transitions 7176 [2021-06-11 20:36:49,529 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:36:49,529 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:36:49,529 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 993 [2021-06-11 20:36:49,530 INFO L480 AbstractCegarLoop]: Abstraction has has 557 places, 1397 transitions, 25610 flow [2021-06-11 20:36:49,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:49,530 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:36:49,530 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] [2021-06-11 20:36:49,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-11 20:36:49,530 INFO L428 AbstractCegarLoop]: === Iteration 27 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:36:49,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:36:49,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1195553281, now seen corresponding path program 13 times [2021-06-11 20:36:49,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:36:49,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009812687] [2021-06-11 20:36:49,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:36:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:36:49,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:49,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:36:49,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:49,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:36:49,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:49,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:49,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:49,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:49,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:49,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:49,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:49,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:49,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:49,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:49,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:49,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:49,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:49,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:49,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:49,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:49,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:49,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:49,677 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:36:49,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:36:49,694 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:36:49,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:36:49,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009812687] [2021-06-11 20:36:49,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:36:49,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:36:49,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28204550] [2021-06-11 20:36:49,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:36:49,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:36:49,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:36:49,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:36:49,698 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:36:49,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 1397 transitions, 25610 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:49,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:36:49,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:36:49,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:36:52,058 INFO L129 PetriNetUnfolder]: 2478/4759 cut-off events. [2021-06-11 20:36:52,058 INFO L130 PetriNetUnfolder]: For 140024/140026 co-relation queries the response was YES. [2021-06-11 20:36:52,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41487 conditions, 4759 events. 2478/4759 cut-off events. For 140024/140026 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 35004 event pairs, 213 based on Foata normal form. 3/4228 useless extension candidates. Maximal degree in co-relation 41214. Up to 2506 conditions per place. [2021-06-11 20:36:52,173 INFO L132 encePairwiseOnDemand]: 71/90 looper letters, 542 selfloop transitions, 833 changer transitions 29/1422 dead transitions. [2021-06-11 20:36:52,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 1422 transitions, 28942 flow [2021-06-11 20:36:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-11 20:36:52,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-06-11 20:36:52,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1658 transitions. [2021-06-11 20:36:52,175 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5942652329749104 [2021-06-11 20:36:52,175 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1658 transitions. [2021-06-11 20:36:52,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1658 transitions. [2021-06-11 20:36:52,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:36:52,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1658 transitions. [2021-06-11 20:36:52,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.483870967741936) internal successors, (1658), 31 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:52,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 90.0) internal successors, (2880), 32 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:52,178 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 90.0) internal successors, (2880), 32 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:52,178 INFO L185 Difference]: Start difference. First operand has 557 places, 1397 transitions, 25610 flow. Second operand 31 states and 1658 transitions. [2021-06-11 20:36:52,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 1422 transitions, 28942 flow [2021-06-11 20:36:53,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 1422 transitions, 27580 flow, removed 15 selfloop flow, removed 18 redundant places. [2021-06-11 20:36:53,097 INFO L241 Difference]: Finished difference. Result has 570 places, 1373 transitions, 25384 flow [2021-06-11 20:36:53,098 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=24248, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=828, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=25384, PETRI_PLACES=570, PETRI_TRANSITIONS=1373} [2021-06-11 20:36:53,098 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 517 predicate places. [2021-06-11 20:36:53,098 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:36:53,098 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 570 places, 1373 transitions, 25384 flow [2021-06-11 20:36:53,098 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 570 places, 1373 transitions, 25384 flow [2021-06-11 20:36:53,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 559 places, 1373 transitions, 25384 flow [2021-06-11 20:36:53,696 INFO L129 PetriNetUnfolder]: 1913/3881 cut-off events. [2021-06-11 20:36:53,696 INFO L130 PetriNetUnfolder]: For 73907/73972 co-relation queries the response was YES. [2021-06-11 20:36:53,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30037 conditions, 3881 events. 1913/3881 cut-off events. For 73907/73972 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 29672 event pairs, 29 based on Foata normal form. 8/3373 useless extension candidates. Maximal degree in co-relation 29772. Up to 1213 conditions per place. [2021-06-11 20:36:53,784 INFO L151 LiptonReduction]: Number of co-enabled transitions 6884 [2021-06-11 20:36:54,051 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:36:54,051 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:36:54,051 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 953 [2021-06-11 20:36:54,052 INFO L480 AbstractCegarLoop]: Abstraction has has 559 places, 1373 transitions, 25384 flow [2021-06-11 20:36:54,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:54,052 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:36:54,052 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] [2021-06-11 20:36:54,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-11 20:36:54,052 INFO L428 AbstractCegarLoop]: === Iteration 28 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:36:54,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:36:54,052 INFO L82 PathProgramCache]: Analyzing trace with hash 2028905191, now seen corresponding path program 14 times [2021-06-11 20:36:54,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:36:54,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766123431] [2021-06-11 20:36:54,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:36:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:36:54,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:54,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:36:54,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:54,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:36:54,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:54,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:54,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:54,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:54,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:54,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:54,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:54,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:54,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:54,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:54,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:54,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:54,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:54,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:54,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:54,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:54,173 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:36:54,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:36:54,189 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:36:54,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:36:54,207 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:36:54,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:54,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:36:54,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766123431] [2021-06-11 20:36:54,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:36:54,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:36:54,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359109225] [2021-06-11 20:36:54,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:36:54,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:36:54,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:36:54,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:36:54,210 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:36:54,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 1373 transitions, 25384 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:54,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:36:54,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:36:54,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:36:56,444 INFO L129 PetriNetUnfolder]: 2447/4619 cut-off events. [2021-06-11 20:36:56,444 INFO L130 PetriNetUnfolder]: For 139802/139810 co-relation queries the response was YES. [2021-06-11 20:36:56,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41195 conditions, 4619 events. 2447/4619 cut-off events. For 139802/139810 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 33099 event pairs, 207 based on Foata normal form. 9/4124 useless extension candidates. Maximal degree in co-relation 40968. Up to 2548 conditions per place. [2021-06-11 20:36:56,540 INFO L132 encePairwiseOnDemand]: 73/90 looper letters, 743 selfloop transitions, 630 changer transitions 17/1408 dead transitions. [2021-06-11 20:36:56,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 1408 transitions, 28816 flow [2021-06-11 20:36:56,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-11 20:36:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-06-11 20:36:56,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1587 transitions. [2021-06-11 20:36:56,542 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5877777777777777 [2021-06-11 20:36:56,542 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1587 transitions. [2021-06-11 20:36:56,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1587 transitions. [2021-06-11 20:36:56,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:36:56,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1587 transitions. [2021-06-11 20:36:56,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.9) internal successors, (1587), 30 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:56,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:56,546 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:56,546 INFO L185 Difference]: Start difference. First operand has 559 places, 1373 transitions, 25384 flow. Second operand 30 states and 1587 transitions. [2021-06-11 20:36:56,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 1408 transitions, 28816 flow [2021-06-11 20:36:57,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 1408 transitions, 26956 flow, removed 77 selfloop flow, removed 36 redundant places. [2021-06-11 20:36:57,429 INFO L241 Difference]: Finished difference. Result has 553 places, 1356 transitions, 24444 flow [2021-06-11 20:36:57,430 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=23534, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=630, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=743, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=24444, PETRI_PLACES=553, PETRI_TRANSITIONS=1356} [2021-06-11 20:36:57,430 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 500 predicate places. [2021-06-11 20:36:57,430 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:36:57,430 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 553 places, 1356 transitions, 24444 flow [2021-06-11 20:36:57,431 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 553 places, 1356 transitions, 24444 flow [2021-06-11 20:36:57,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 528 places, 1356 transitions, 24444 flow [2021-06-11 20:36:58,026 INFO L129 PetriNetUnfolder]: 1871/3755 cut-off events. [2021-06-11 20:36:58,026 INFO L130 PetriNetUnfolder]: For 70078/70131 co-relation queries the response was YES. [2021-06-11 20:36:58,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29229 conditions, 3755 events. 1871/3755 cut-off events. For 70078/70131 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 28249 event pairs, 28 based on Foata normal form. 13/3281 useless extension candidates. Maximal degree in co-relation 29016. Up to 1199 conditions per place. [2021-06-11 20:36:58,112 INFO L151 LiptonReduction]: Number of co-enabled transitions 6748 [2021-06-11 20:36:58,361 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:36:58,361 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:36:58,361 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 931 [2021-06-11 20:36:58,362 INFO L480 AbstractCegarLoop]: Abstraction has has 528 places, 1356 transitions, 24444 flow [2021-06-11 20:36:58,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:58,362 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:36:58,362 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] [2021-06-11 20:36:58,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-11 20:36:58,362 INFO L428 AbstractCegarLoop]: === Iteration 29 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:36:58,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:36:58,363 INFO L82 PathProgramCache]: Analyzing trace with hash 66715891, now seen corresponding path program 15 times [2021-06-11 20:36:58,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:36:58,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785646909] [2021-06-11 20:36:58,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:36:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:36:58,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:58,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:36:58,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:58,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:36:58,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:58,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:58,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:58,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:58,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:58,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:58,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:58,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:58,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:58,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:58,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:58,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:58,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:58,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:36:58,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:58,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:58,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:36:58,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:36:58,506 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:36:58,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:36:58,524 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:36:58,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:36:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:36:58,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785646909] [2021-06-11 20:36:58,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:36:58,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:36:58,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254541957] [2021-06-11 20:36:58,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:36:58,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:36:58,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:36:58,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:36:58,527 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:36:58,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 1356 transitions, 24444 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:36:58,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:36:58,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:36:58,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:37:00,796 INFO L129 PetriNetUnfolder]: 2433/4560 cut-off events. [2021-06-11 20:37:00,796 INFO L130 PetriNetUnfolder]: For 135871/135873 co-relation queries the response was YES. [2021-06-11 20:37:00,852 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40334 conditions, 4560 events. 2433/4560 cut-off events. For 135871/135873 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 32317 event pairs, 226 based on Foata normal form. 4/4073 useless extension candidates. Maximal degree in co-relation 40142. Up to 2419 conditions per place. [2021-06-11 20:37:00,875 INFO L132 encePairwiseOnDemand]: 71/90 looper letters, 556 selfloop transitions, 805 changer transitions 6/1385 dead transitions. [2021-06-11 20:37:00,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 1385 transitions, 27700 flow [2021-06-11 20:37:00,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-11 20:37:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-06-11 20:37:00,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1747 transitions. [2021-06-11 20:37:00,877 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5882154882154882 [2021-06-11 20:37:00,877 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1747 transitions. [2021-06-11 20:37:00,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1747 transitions. [2021-06-11 20:37:00,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:37:00,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1747 transitions. [2021-06-11 20:37:00,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.93939393939394) internal successors, (1747), 33 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:00,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 90.0) internal successors, (3060), 34 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:00,881 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 90.0) internal successors, (3060), 34 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:00,881 INFO L185 Difference]: Start difference. First operand has 528 places, 1356 transitions, 24444 flow. Second operand 33 states and 1747 transitions. [2021-06-11 20:37:00,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 1385 transitions, 27700 flow [2021-06-11 20:37:01,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 1385 transitions, 26340 flow, removed 22 selfloop flow, removed 36 redundant places. [2021-06-11 20:37:01,580 INFO L241 Difference]: Finished difference. Result has 526 places, 1351 transitions, 24618 flow [2021-06-11 20:37:01,581 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=23104, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=804, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=24618, PETRI_PLACES=526, PETRI_TRANSITIONS=1351} [2021-06-11 20:37:01,581 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 473 predicate places. [2021-06-11 20:37:01,581 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:37:01,581 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 526 places, 1351 transitions, 24618 flow [2021-06-11 20:37:01,581 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 526 places, 1351 transitions, 24618 flow [2021-06-11 20:37:01,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 521 places, 1351 transitions, 24618 flow [2021-06-11 20:37:02,148 INFO L129 PetriNetUnfolder]: 1873/3778 cut-off events. [2021-06-11 20:37:02,148 INFO L130 PetriNetUnfolder]: For 68329/68374 co-relation queries the response was YES. [2021-06-11 20:37:02,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29110 conditions, 3778 events. 1873/3778 cut-off events. For 68329/68374 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 28595 event pairs, 22 based on Foata normal form. 8/3294 useless extension candidates. Maximal degree in co-relation 28879. Up to 1188 conditions per place. [2021-06-11 20:37:02,236 INFO L151 LiptonReduction]: Number of co-enabled transitions 6724 [2021-06-11 20:37:02,489 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:37:02,490 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:37:02,490 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 909 [2021-06-11 20:37:02,490 INFO L480 AbstractCegarLoop]: Abstraction has has 521 places, 1351 transitions, 24618 flow [2021-06-11 20:37:02,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:02,490 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:37:02,490 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] [2021-06-11 20:37:02,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-11 20:37:02,491 INFO L428 AbstractCegarLoop]: === Iteration 30 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:37:02,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:37:02,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1705794927, now seen corresponding path program 16 times [2021-06-11 20:37:02,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:37:02,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170374325] [2021-06-11 20:37:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:37:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:37:02,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:02,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:37:02,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:02,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:37:02,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:02,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:02,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:02,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:02,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:02,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:02,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:02,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:02,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:02,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:02,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:02,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:02,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:02,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:02,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:02,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:02,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:02,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:02,656 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:37:02,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:37:02,680 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:37:02,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:02,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:37:02,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170374325] [2021-06-11 20:37:02,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:37:02,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:37:02,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696637329] [2021-06-11 20:37:02,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:37:02,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:37:02,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:37:02,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:37:02,685 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:37:02,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 1351 transitions, 24618 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:02,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:37:02,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:37:02,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:37:04,846 INFO L129 PetriNetUnfolder]: 2438/4560 cut-off events. [2021-06-11 20:37:04,847 INFO L130 PetriNetUnfolder]: For 133068/133070 co-relation queries the response was YES. [2021-06-11 20:37:04,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40262 conditions, 4560 events. 2438/4560 cut-off events. For 133068/133070 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 32268 event pairs, 230 based on Foata normal form. 3/4066 useless extension candidates. Maximal degree in co-relation 40053. Up to 2470 conditions per place. [2021-06-11 20:37:04,926 INFO L132 encePairwiseOnDemand]: 73/90 looper letters, 584 selfloop transitions, 757 changer transitions 17/1376 dead transitions. [2021-06-11 20:37:04,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 1376 transitions, 27732 flow [2021-06-11 20:37:04,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-11 20:37:04,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-06-11 20:37:04,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1537 transitions. [2021-06-11 20:37:04,928 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2021-06-11 20:37:04,928 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1537 transitions. [2021-06-11 20:37:04,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1537 transitions. [2021-06-11 20:37:04,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:37:04,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1537 transitions. [2021-06-11 20:37:04,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.0) internal successors, (1537), 29 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:04,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 90.0) internal successors, (2700), 30 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:04,930 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 90.0) internal successors, (2700), 30 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:04,930 INFO L185 Difference]: Start difference. First operand has 521 places, 1351 transitions, 24618 flow. Second operand 29 states and 1537 transitions. [2021-06-11 20:37:04,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 1376 transitions, 27732 flow [2021-06-11 20:37:05,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 1376 transitions, 26045 flow, removed 12 selfloop flow, removed 35 redundant places. [2021-06-11 20:37:05,621 INFO L241 Difference]: Finished difference. Result has 515 places, 1334 transitions, 24114 flow [2021-06-11 20:37:05,622 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=22931, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=757, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=24114, PETRI_PLACES=515, PETRI_TRANSITIONS=1334} [2021-06-11 20:37:05,622 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 462 predicate places. [2021-06-11 20:37:05,622 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:37:05,622 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 515 places, 1334 transitions, 24114 flow [2021-06-11 20:37:05,623 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 515 places, 1334 transitions, 24114 flow [2021-06-11 20:37:05,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 492 places, 1334 transitions, 24114 flow [2021-06-11 20:37:06,158 INFO L129 PetriNetUnfolder]: 1852/3666 cut-off events. [2021-06-11 20:37:06,158 INFO L130 PetriNetUnfolder]: For 67185/67230 co-relation queries the response was YES. [2021-06-11 20:37:06,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28674 conditions, 3666 events. 1852/3666 cut-off events. For 67185/67230 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 27199 event pairs, 28 based on Foata normal form. 8/3206 useless extension candidates. Maximal degree in co-relation 28474. Up to 1185 conditions per place. [2021-06-11 20:37:06,238 INFO L151 LiptonReduction]: Number of co-enabled transitions 6588 [2021-06-11 20:37:06,482 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:37:06,482 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:37:06,482 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 860 [2021-06-11 20:37:06,483 INFO L480 AbstractCegarLoop]: Abstraction has has 492 places, 1334 transitions, 24114 flow [2021-06-11 20:37:06,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:06,483 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:37:06,483 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] [2021-06-11 20:37:06,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-11 20:37:06,483 INFO L428 AbstractCegarLoop]: === Iteration 31 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:37:06,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:37:06,483 INFO L82 PathProgramCache]: Analyzing trace with hash -672105836, now seen corresponding path program 1 times [2021-06-11 20:37:06,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:37:06,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257709575] [2021-06-11 20:37:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:37:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:37:06,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:06,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:37:06,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:06,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:37:06,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:06,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:06,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:06,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:06,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:06,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:06,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:06,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:06,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:06,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:06,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:06,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:06,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:06,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:06,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:06,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:06,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:06,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:06,623 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:37:06,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:37:06,639 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:37:06,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:37:06,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257709575] [2021-06-11 20:37:06,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:37:06,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 20:37:06,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171776110] [2021-06-11 20:37:06,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-11 20:37:06,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:37:06,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-11 20:37:06,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-06-11 20:37:06,642 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:37:06,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 1334 transitions, 24114 flow. Second operand has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:06,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:37:06,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:37:06,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:37:08,563 INFO L129 PetriNetUnfolder]: 2446/4532 cut-off events. [2021-06-11 20:37:08,563 INFO L130 PetriNetUnfolder]: For 137533/137535 co-relation queries the response was YES. [2021-06-11 20:37:08,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40984 conditions, 4532 events. 2446/4532 cut-off events. For 137533/137535 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 31659 event pairs, 211 based on Foata normal form. 3/4063 useless extension candidates. Maximal degree in co-relation 40720. Up to 2874 conditions per place. [2021-06-11 20:37:08,647 INFO L132 encePairwiseOnDemand]: 74/90 looper letters, 1117 selfloop transitions, 331 changer transitions 5/1471 dead transitions. [2021-06-11 20:37:08,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 1471 transitions, 30366 flow [2021-06-11 20:37:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-11 20:37:08,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-06-11 20:37:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1274 transitions. [2021-06-11 20:37:08,649 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5898148148148148 [2021-06-11 20:37:08,649 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1274 transitions. [2021-06-11 20:37:08,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1274 transitions. [2021-06-11 20:37:08,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:37:08,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1274 transitions. [2021-06-11 20:37:08,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 53.083333333333336) internal successors, (1274), 24 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:08,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 90.0) internal successors, (2250), 25 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:08,652 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 90.0) internal successors, (2250), 25 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:08,652 INFO L185 Difference]: Start difference. First operand has 492 places, 1334 transitions, 24114 flow. Second operand 24 states and 1274 transitions. [2021-06-11 20:37:08,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 1471 transitions, 30366 flow [2021-06-11 20:37:09,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 1471 transitions, 28559 flow, removed 38 selfloop flow, removed 35 redundant places. [2021-06-11 20:37:09,390 INFO L241 Difference]: Finished difference. Result has 491 places, 1437 transitions, 26187 flow [2021-06-11 20:37:09,391 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=22502, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1051, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=26187, PETRI_PLACES=491, PETRI_TRANSITIONS=1437} [2021-06-11 20:37:09,391 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 438 predicate places. [2021-06-11 20:37:09,391 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:37:09,391 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 491 places, 1437 transitions, 26187 flow [2021-06-11 20:37:09,392 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 491 places, 1437 transitions, 26187 flow [2021-06-11 20:37:09,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 491 places, 1437 transitions, 26187 flow [2021-06-11 20:37:09,702 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][1058], [Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), 1027#true, Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 233#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 203#(and (= y_1 y_7) (= x_6 x_0)), 6#L91true, Black: 235#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 237#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 207#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 255#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= temp_11 temp_5) (<= y_1 (+ temp_10 1)) (<= temp_5 temp_11) (= x_6 x_0)), Black: 745#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 239#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 764#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), 781#true, 269#true, Black: 483#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 x_0) (<= y_7 temp_4)), Black: 515#(and (<= temp_4 temp_10) (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 487#(and (<= temp_4 temp_10) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 456#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 489#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 459#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 523#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (= x_6 x_0)), Black: 460#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 23#L62true, Black: 495#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 465#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 469#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 471#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 507#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 475#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= x_6 x_0) (<= y_7 temp_4)), Black: 477#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 479#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 temp_4) (= x_6 x_0)), 544#true, 61#L30true, Black: 1056#(and (<= temp_5 x_6) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= y_7 temp_4) (= x_6 x_0)), Black: 304#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1074#(and (<= temp_5 x_6) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 274#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 306#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 275#(and (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 276#(and (<= (+ y_7 1) temp_4) (<= temp_4 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 800#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1029#(and (= y_1 y_7) (= x_6 x_0)), Black: 1064#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 294#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), 67#thread6EXITtrue, Black: 804#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1068#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 280#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 1037#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 808#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1054#(and (<= temp_5 x_6) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (= x_6 x_0)), Black: 316#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 812#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 70#thread3EXITtrue, Black: 284#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), Black: 814#(and (<= x_0 temp_11) (<= x_6 (+ temp_5 1)) (<= temp_11 x_0) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), 1095#true, Black: 818#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 300#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 820#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 329#true, Black: 789#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 822#(and (<= x_6 (+ temp_5 1)) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), Black: 790#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4)), Black: 824#(and (<= x_6 (+ temp_5 1)) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4) (= x_6 x_0)), 848#true, Black: 86#(not f2_9), Black: 91#(not f1_2), Black: 592#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 594#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 598#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (<= x_0 (+ x_6 1))), 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temp_10 1)) (= x_6 x_0)), 452#true, Black: 156#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 172#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 158#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 918#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 190#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 939#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 174#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 201#true, 735#true]) [2021-06-11 20:37:09,702 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:37:09,702 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:09,702 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:09,702 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:09,981 INFO L129 PetriNetUnfolder]: 1918/3774 cut-off events. [2021-06-11 20:37:09,981 INFO L130 PetriNetUnfolder]: For 72956/73062 co-relation queries the response was YES. [2021-06-11 20:37:10,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29976 conditions, 3774 events. 1918/3774 cut-off events. For 72956/73062 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 27836 event pairs, 26 based on Foata normal form. 10/3300 useless extension candidates. Maximal degree in co-relation 29736. Up to 1275 conditions per place. [2021-06-11 20:37:10,078 INFO L151 LiptonReduction]: Number of co-enabled transitions 6860 [2021-06-11 20:37:10,352 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:37:10,352 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:37:10,352 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 961 [2021-06-11 20:37:10,352 INFO L480 AbstractCegarLoop]: Abstraction has has 491 places, 1437 transitions, 26187 flow [2021-06-11 20:37:10,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:10,353 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:37:10,353 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] [2021-06-11 20:37:10,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-11 20:37:10,353 INFO L428 AbstractCegarLoop]: === Iteration 32 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:37:10,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:37:10,353 INFO L82 PathProgramCache]: Analyzing trace with hash 840400754, now seen corresponding path program 2 times [2021-06-11 20:37:10,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:37:10,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145966291] [2021-06-11 20:37:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:37:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:37:10,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:10,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:37:10,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:10,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:37:10,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:10,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:10,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:10,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:10,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:10,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:10,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:10,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:10,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:10,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:10,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:10,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:10,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:10,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:10,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:10,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:10,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:10,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:10,465 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:37:10,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:37:10,480 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:37:10,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:37:10,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145966291] [2021-06-11 20:37:10,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:37:10,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 20:37:10,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272944747] [2021-06-11 20:37:10,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-11 20:37:10,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:37:10,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-11 20:37:10,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-06-11 20:37:10,484 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:37:10,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 1437 transitions, 26187 flow. Second operand has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:10,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:37:10,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:37:10,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:37:12,205 INFO L129 PetriNetUnfolder]: 2441/4534 cut-off events. [2021-06-11 20:37:12,206 INFO L130 PetriNetUnfolder]: For 144187/144197 co-relation queries the response was YES. [2021-06-11 20:37:12,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41172 conditions, 4534 events. 2441/4534 cut-off events. For 144187/144197 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 31716 event pairs, 213 based on Foata normal form. 11/4076 useless extension candidates. Maximal degree in co-relation 40902. Up to 2868 conditions per place. [2021-06-11 20:37:12,283 INFO L132 encePairwiseOnDemand]: 74/90 looper letters, 1114 selfloop transitions, 333 changer transitions 0/1465 dead transitions. [2021-06-11 20:37:12,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 1465 transitions, 29549 flow [2021-06-11 20:37:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-11 20:37:12,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-06-11 20:37:12,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1219 transitions. [2021-06-11 20:37:12,285 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2021-06-11 20:37:12,285 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1219 transitions. [2021-06-11 20:37:12,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1219 transitions. [2021-06-11 20:37:12,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:37:12,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1219 transitions. [2021-06-11 20:37:12,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 53.0) internal successors, (1219), 23 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:12,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 90.0) internal successors, (2160), 24 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:12,287 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 90.0) internal successors, (2160), 24 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:12,287 INFO L185 Difference]: Start difference. First operand has 491 places, 1437 transitions, 26187 flow. Second operand 23 states and 1219 transitions. [2021-06-11 20:37:12,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 1465 transitions, 29549 flow [2021-06-11 20:37:13,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 1465 transitions, 28665 flow, removed 408 selfloop flow, removed 5 redundant places. [2021-06-11 20:37:13,113 INFO L241 Difference]: Finished difference. Result has 510 places, 1438 transitions, 26038 flow [2021-06-11 20:37:13,114 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=25359, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=26038, PETRI_PLACES=510, PETRI_TRANSITIONS=1438} [2021-06-11 20:37:13,114 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 457 predicate places. [2021-06-11 20:37:13,114 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:37:13,114 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 510 places, 1438 transitions, 26038 flow [2021-06-11 20:37:13,115 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 510 places, 1438 transitions, 26038 flow [2021-06-11 20:37:13,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 510 places, 1438 transitions, 26038 flow [2021-06-11 20:37:13,407 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][1054], [Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), 1027#true, Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 233#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), 6#L91true, Black: 203#(and (= y_1 y_7) (= x_6 x_0)), Black: 235#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 237#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 207#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 255#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= temp_11 temp_5) (<= y_1 (+ temp_10 1)) (<= temp_5 temp_11) (= x_6 x_0)), Black: 745#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 239#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 764#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), 269#true, 781#true, Black: 483#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 x_0) (<= y_7 temp_4)), Black: 515#(and (<= temp_4 temp_10) (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 487#(and (<= temp_4 temp_10) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 456#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 489#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 459#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 523#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (= x_6 x_0)), Black: 460#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 23#L62true, Black: 495#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 465#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 469#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 471#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 507#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 475#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= x_6 x_0) (<= y_7 temp_4)), Black: 477#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 479#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 temp_4) (= x_6 x_0)), 544#true, 61#L30true, Black: 1056#(and (<= temp_5 x_6) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= y_7 temp_4) (= x_6 x_0)), Black: 304#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 274#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 306#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 275#(and (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 276#(and (<= (+ y_7 1) temp_4) (<= temp_4 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 800#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1029#(and (= y_1 y_7) (= x_6 x_0)), Black: 1064#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 294#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), 67#thread6EXITtrue, Black: 804#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1068#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 280#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 1037#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 808#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1054#(and (<= temp_5 x_6) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (= x_6 x_0)), Black: 316#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 812#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 70#thread3EXITtrue, Black: 284#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), Black: 814#(and (<= x_0 temp_11) (<= x_6 (+ temp_5 1)) (<= temp_11 x_0) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), 1095#true, Black: 818#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 300#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 820#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 329#true, Black: 789#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 822#(and (<= x_6 (+ temp_5 1)) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), Black: 790#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4)), Black: 824#(and (<= x_6 (+ temp_5 1)) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4) (= x_6 x_0)), 848#true, Black: 86#(not f2_9), Black: 91#(not f1_2), Black: 592#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 594#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 598#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 582#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (= x_6 x_0)), Black: 586#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 96#(not f1_8), Black: 588#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 556#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 558#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 574#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 101#(not f2_3), 616#true, 104#true, 1652#true, Black: 1120#(and (<= temp_5 x_6) (< x_0 (+ x_6 1)) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 1105#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 1108#(and (< x_0 (+ x_6 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 1132#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 336#(and (<= y_7 y_1) (<= y_1 y_7) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 385#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= temp_11 temp_5) (<= y_1 (+ temp_10 1)) (<= temp_5 temp_11) (= x_6 x_0)), Black: 369#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 340#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 885#(and (<= x_6 (+ temp_5 1)) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), Black: 361#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 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temp_5) (<= y_7 temp_4) (= x_6 x_0)), Black: 114#(and (<= y_7 (+ temp_5 2)) (<= (+ temp_5 2) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), 398#true, Black: 115#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ y_1 1)) (<= (+ temp_5 1) x_6) (<= (+ y_1 1) y_7)), Black: 1384#(and (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 1402#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 121#(and (<= temp_10 (+ y_1 1)) (<= y_7 (+ y_1 2)) (<= (+ y_1 2) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= (+ y_1 1) temp_10)), Black: 106#(and (= y_1 y_7) (= x_6 x_0)), Black: 139#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 109#(and (<= y_7 (+ y_1 1)) (<= (+ x_0 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), Black: 125#(and (<= y_7 (+ temp_5 2)) (<= y_7 (+ y_1 1)) (<= (+ temp_5 2) y_7) (<= (+ x_0 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), 150#true, Black: 1665#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 1681#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1667#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1669#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4)), Black: 1654#(and (= y_1 y_7) (= x_6 x_0)), Black: 1658#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 1675#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1659#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4)), Black: 1691#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 1660#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1677#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 1704#true, Black: 672#(and (<= temp_4 temp_10) (<= temp_5 x_6) (= y_1 y_7) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (= x_6 x_0)), Black: 674#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 628#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 662#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 670#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 400#(and (= y_1 y_7) (= x_6 x_0)), Black: 434#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 405#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 438#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 406#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 422#(and (<= x_0 x_6) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 407#(and (<= x_0 x_6) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0)), Black: 408#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 178#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 424#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 164#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 426#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 411#(and (<= y_1 y_7) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 152#(and (= y_1 y_7) (= x_6 x_0)), Black: 184#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 430#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 156#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 452#true, Black: 172#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 158#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 918#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 190#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 174#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 201#true, Black: 1739#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= x_0 (+ temp_11 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 1741#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (= x_6 x_0)), 735#true]) [2021-06-11 20:37:13,407 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:37:13,407 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:13,407 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:13,408 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:13,717 INFO L129 PetriNetUnfolder]: 1929/3813 cut-off events. [2021-06-11 20:37:13,718 INFO L130 PetriNetUnfolder]: For 72673/72786 co-relation queries the response was YES. [2021-06-11 20:37:13,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29793 conditions, 3813 events. 1929/3813 cut-off events. For 72673/72786 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 28350 event pairs, 20 based on Foata normal form. 10/3323 useless extension candidates. Maximal degree in co-relation 29554. Up to 1267 conditions per place. [2021-06-11 20:37:13,803 INFO L151 LiptonReduction]: Number of co-enabled transitions 6870 [2021-06-11 20:37:14,079 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:37:14,079 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:37:14,079 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 965 [2021-06-11 20:37:14,080 INFO L480 AbstractCegarLoop]: Abstraction has has 510 places, 1438 transitions, 26038 flow [2021-06-11 20:37:14,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:14,080 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:37:14,080 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] [2021-06-11 20:37:14,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-11 20:37:14,080 INFO L428 AbstractCegarLoop]: === Iteration 33 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:37:14,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:37:14,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1919671794, now seen corresponding path program 3 times [2021-06-11 20:37:14,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:37:14,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581111368] [2021-06-11 20:37:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:37:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:37:14,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:14,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:37:14,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:14,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:37:14,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:14,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:14,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:14,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:14,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:14,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:14,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:14,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:14,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:14,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:14,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:14,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:14,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:14,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:14,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:14,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:14,181 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:37:14,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:37:14,196 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:37:14,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:37:14,211 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:37:14,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:14,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:37:14,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581111368] [2021-06-11 20:37:14,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:37:14,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 20:37:14,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145907416] [2021-06-11 20:37:14,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-11 20:37:14,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:37:14,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-11 20:37:14,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-06-11 20:37:14,220 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:37:14,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 1438 transitions, 26038 flow. Second operand has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:14,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:37:14,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:37:14,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:37:16,372 INFO L129 PetriNetUnfolder]: 2480/4618 cut-off events. [2021-06-11 20:37:16,373 INFO L130 PetriNetUnfolder]: For 143871/143873 co-relation queries the response was YES. [2021-06-11 20:37:16,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41542 conditions, 4618 events. 2480/4618 cut-off events. For 143871/143873 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 32514 event pairs, 213 based on Foata normal form. 3/4140 useless extension candidates. Maximal degree in co-relation 41288. Up to 2842 conditions per place. [2021-06-11 20:37:16,461 INFO L132 encePairwiseOnDemand]: 74/90 looper letters, 1100 selfloop transitions, 395 changer transitions 0/1513 dead transitions. [2021-06-11 20:37:16,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 1513 transitions, 30499 flow [2021-06-11 20:37:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-11 20:37:16,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-06-11 20:37:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1484 transitions. [2021-06-11 20:37:16,463 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2021-06-11 20:37:16,463 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1484 transitions. [2021-06-11 20:37:16,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1484 transitions. [2021-06-11 20:37:16,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:37:16,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1484 transitions. [2021-06-11 20:37:16,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 53.0) internal successors, (1484), 28 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:16,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 90.0) internal successors, (2610), 29 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:16,465 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 90.0) internal successors, (2610), 29 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:16,465 INFO L185 Difference]: Start difference. First operand has 510 places, 1438 transitions, 26038 flow. Second operand 28 states and 1484 transitions. [2021-06-11 20:37:16,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 1513 transitions, 30499 flow [2021-06-11 20:37:17,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 1513 transitions, 29802 flow, removed 33 selfloop flow, removed 17 redundant places. [2021-06-11 20:37:17,259 INFO L241 Difference]: Finished difference. Result has 529 places, 1474 transitions, 27138 flow [2021-06-11 20:37:17,260 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=25369, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1064, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=27138, PETRI_PLACES=529, PETRI_TRANSITIONS=1474} [2021-06-11 20:37:17,260 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 476 predicate places. [2021-06-11 20:37:17,260 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:37:17,261 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 529 places, 1474 transitions, 27138 flow [2021-06-11 20:37:17,261 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 529 places, 1474 transitions, 27138 flow [2021-06-11 20:37:17,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 529 places, 1474 transitions, 27138 flow [2021-06-11 20:37:17,557 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][1090], [Black: 1792#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (= x_6 x_0)), Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 1778#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11)), 1027#true, Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1782#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 233#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 1751#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 1768#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= x_0 (+ x_6 1))), 6#L91true, Black: 203#(and (= y_1 y_7) (= x_6 x_0)), Black: 235#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1753#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 237#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1788#(and (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 1758#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 207#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1774#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 255#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= temp_11 temp_5) (<= y_1 (+ temp_10 1)) (<= temp_5 temp_11) (= x_6 x_0)), Black: 745#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 239#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 764#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), 781#true, 269#true, Black: 483#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 x_0) (<= y_7 temp_4)), Black: 515#(and (<= temp_4 temp_10) (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 487#(and (<= temp_4 temp_10) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 456#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 489#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 459#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 523#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (= x_6 x_0)), Black: 460#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 23#L62true, Black: 495#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 465#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 469#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 471#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 507#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 475#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= x_6 x_0) (<= y_7 temp_4)), Black: 477#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 479#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 temp_4) (= x_6 x_0)), 544#true, 61#L30true, Black: 1056#(and (<= temp_5 x_6) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= y_7 temp_4) (= x_6 x_0)), Black: 304#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 274#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 306#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 275#(and (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 276#(and (<= (+ y_7 1) temp_4) (<= temp_4 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 800#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1029#(and (= y_1 y_7) (= x_6 x_0)), Black: 1064#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 294#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), 67#thread6EXITtrue, Black: 1068#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 804#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 280#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 808#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1037#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), 70#thread3EXITtrue, Black: 1054#(and (<= temp_5 x_6) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (= x_6 x_0)), Black: 316#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 812#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 284#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), Black: 814#(and (<= x_0 temp_11) (<= x_6 (+ temp_5 1)) (<= temp_11 x_0) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), 1095#true, Black: 300#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 818#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 329#true, Black: 820#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 789#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 822#(and (<= x_6 (+ temp_5 1)) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), Black: 790#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4)), Black: 824#(and (<= x_6 (+ temp_5 1)) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4) (= x_6 x_0)), 848#true, Black: 86#(not f2_9), Black: 91#(not f1_2), Black: 592#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 594#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 598#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 582#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (= x_6 x_0)), Black: 586#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 96#(not f1_8), Black: 588#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 556#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 558#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 574#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 101#(not f2_3), 104#true, 616#true, 1652#true, Black: 1120#(and (<= temp_5 x_6) (< x_0 (+ x_6 1)) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 1105#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 1108#(and (< x_0 (+ x_6 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 1132#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 336#(and (<= y_7 y_1) (<= y_1 y_7) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 385#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= temp_11 temp_5) (<= y_1 (+ temp_10 1)) (<= temp_5 temp_11) (= x_6 x_0)), Black: 369#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 340#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 885#(and (<= x_6 (+ temp_5 1)) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), Black: 361#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 347#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), Black: 871#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= x_6 x_0) (<= y_7 temp_4)), Black: 365#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 858#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 333#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 129#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ y_1 1)) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), Black: 367#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 875#(and (<= temp_5 x_6) (= y_1 y_7) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_7 temp_4) (= x_6 x_0)), 398#true, Black: 114#(and (<= y_7 (+ temp_5 2)) (<= (+ temp_5 2) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 115#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ y_1 1)) (<= (+ temp_5 1) x_6) (<= (+ y_1 1) y_7)), Black: 1384#(and (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 121#(and (<= temp_10 (+ y_1 1)) (<= y_7 (+ y_1 2)) (<= (+ y_1 2) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= (+ y_1 1) temp_10)), Black: 1402#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 106#(and (= y_1 y_7) (= x_6 x_0)), Black: 139#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 109#(and (<= y_7 (+ y_1 1)) (<= (+ x_0 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), Black: 125#(and (<= y_7 (+ temp_5 2)) (<= y_7 (+ y_1 1)) (<= (+ temp_5 2) y_7) (<= (+ x_0 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), 150#true, Black: 1665#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 1681#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1667#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1669#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4)), Black: 1654#(and (= y_1 y_7) (= x_6 x_0)), Black: 1658#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 1675#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1659#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4)), Black: 1691#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 1660#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1677#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 672#(and (<= temp_4 temp_10) (<= temp_5 x_6) (= y_1 y_7) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (= x_6 x_0)), Black: 674#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 628#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 662#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 670#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 400#(and (= y_1 y_7) (= x_6 x_0)), Black: 434#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 405#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 438#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 406#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 422#(and (<= x_0 x_6) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 407#(and (<= x_0 x_6) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0)), Black: 408#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 178#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 424#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 164#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 426#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 411#(and (<= y_1 y_7) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 152#(and (= y_1 y_7) (= x_6 x_0)), Black: 184#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 430#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 452#true, Black: 156#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 172#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 918#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 158#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 190#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 174#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 201#true, Black: 1739#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= x_0 (+ temp_11 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 1741#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (= x_6 x_0)), 1745#true, 735#true]) [2021-06-11 20:37:17,558 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:37:17,558 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:17,558 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:17,558 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:17,866 INFO L129 PetriNetUnfolder]: 1959/3881 cut-off events. [2021-06-11 20:37:17,866 INFO L130 PetriNetUnfolder]: For 75911/75990 co-relation queries the response was YES. [2021-06-11 20:37:17,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30829 conditions, 3881 events. 1959/3881 cut-off events. For 75911/75990 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 29059 event pairs, 20 based on Foata normal form. 9/3398 useless extension candidates. Maximal degree in co-relation 30577. Up to 1316 conditions per place. [2021-06-11 20:37:17,953 INFO L151 LiptonReduction]: Number of co-enabled transitions 6954 [2021-06-11 20:37:18,244 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:37:18,244 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:37:18,244 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 984 [2021-06-11 20:37:18,245 INFO L480 AbstractCegarLoop]: Abstraction has has 529 places, 1474 transitions, 27138 flow [2021-06-11 20:37:18,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:18,245 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:37:18,245 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] [2021-06-11 20:37:18,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-11 20:37:18,245 INFO L428 AbstractCegarLoop]: === Iteration 34 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:37:18,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:37:18,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1623414674, now seen corresponding path program 4 times [2021-06-11 20:37:18,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:37:18,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625781471] [2021-06-11 20:37:18,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:37:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:37:18,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:18,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:37:18,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:18,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:37:18,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:18,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:18,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:18,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:18,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:18,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:18,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:18,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:18,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:18,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:18,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:18,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:18,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:18,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:18,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:18,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:18,363 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:37:18,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:37:18,377 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:37:18,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:37:18,392 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:37:18,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:37:18,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625781471] [2021-06-11 20:37:18,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:37:18,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 20:37:18,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993955067] [2021-06-11 20:37:18,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-11 20:37:18,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:37:18,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-11 20:37:18,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-06-11 20:37:18,395 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:37:18,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 1474 transitions, 27138 flow. Second operand has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:18,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:37:18,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:37:18,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:37:20,843 INFO L129 PetriNetUnfolder]: 2496/4645 cut-off events. [2021-06-11 20:37:20,844 INFO L130 PetriNetUnfolder]: For 149449/149451 co-relation queries the response was YES. [2021-06-11 20:37:20,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42311 conditions, 4645 events. 2496/4645 cut-off events. For 149449/149451 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 32792 event pairs, 207 based on Foata normal form. 3/4163 useless extension candidates. Maximal degree in co-relation 42055. Up to 2846 conditions per place. [2021-06-11 20:37:20,930 INFO L132 encePairwiseOnDemand]: 74/90 looper letters, 1104 selfloop transitions, 405 changer transitions 0/1527 dead transitions. [2021-06-11 20:37:20,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 1527 transitions, 31225 flow [2021-06-11 20:37:20,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-11 20:37:20,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-06-11 20:37:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1692 transitions. [2021-06-11 20:37:20,932 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5875 [2021-06-11 20:37:20,932 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1692 transitions. [2021-06-11 20:37:20,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1692 transitions. [2021-06-11 20:37:20,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:37:20,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1692 transitions. [2021-06-11 20:37:20,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.875) internal successors, (1692), 32 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:20,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 90.0) internal successors, (2970), 33 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:20,936 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 90.0) internal successors, (2970), 33 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:20,936 INFO L185 Difference]: Start difference. First operand has 529 places, 1474 transitions, 27138 flow. Second operand 32 states and 1692 transitions. [2021-06-11 20:37:20,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 1527 transitions, 31225 flow [2021-06-11 20:37:21,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 1527 transitions, 30468 flow, removed 236 selfloop flow, removed 8 redundant places. [2021-06-11 20:37:21,784 INFO L241 Difference]: Finished difference. Result has 553 places, 1484 transitions, 27404 flow [2021-06-11 20:37:21,785 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=26500, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=395, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1079, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=27404, PETRI_PLACES=553, PETRI_TRANSITIONS=1484} [2021-06-11 20:37:21,785 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 500 predicate places. [2021-06-11 20:37:21,785 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:37:21,785 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 553 places, 1484 transitions, 27404 flow [2021-06-11 20:37:21,785 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 553 places, 1484 transitions, 27404 flow [2021-06-11 20:37:21,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 553 places, 1484 transitions, 27404 flow [2021-06-11 20:37:22,440 INFO L129 PetriNetUnfolder]: 1964/3910 cut-off events. [2021-06-11 20:37:22,441 INFO L130 PetriNetUnfolder]: For 74893/74966 co-relation queries the response was YES. [2021-06-11 20:37:22,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31013 conditions, 3910 events. 1964/3910 cut-off events. For 74893/74966 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 29391 event pairs, 17 based on Foata normal form. 13/3422 useless extension candidates. Maximal degree in co-relation 30764. Up to 1316 conditions per place. [2021-06-11 20:37:22,540 INFO L151 LiptonReduction]: Number of co-enabled transitions 6954 [2021-06-11 20:37:22,835 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:37:22,835 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:37:22,835 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1050 [2021-06-11 20:37:22,836 INFO L480 AbstractCegarLoop]: Abstraction has has 553 places, 1484 transitions, 27404 flow [2021-06-11 20:37:22,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:22,836 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:37:22,836 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] [2021-06-11 20:37:22,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-11 20:37:22,836 INFO L428 AbstractCegarLoop]: === Iteration 35 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:37:22,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:37:22,836 INFO L82 PathProgramCache]: Analyzing trace with hash -199835044, now seen corresponding path program 5 times [2021-06-11 20:37:22,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:37:22,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584932769] [2021-06-11 20:37:22,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:37:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:37:22,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:22,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:37:22,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:22,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:37:22,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:22,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:22,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:22,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:22,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:22,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:22,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:22,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:22,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:22,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:22,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:22,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:22,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:22,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:22,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:22,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:22,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:22,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:22,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:37:22,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:37:22,968 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:37:22,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:37:22,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584932769] [2021-06-11 20:37:22,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:37:22,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 20:37:22,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001999071] [2021-06-11 20:37:22,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-11 20:37:22,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:37:22,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-11 20:37:22,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-06-11 20:37:22,971 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:37:22,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 1484 transitions, 27404 flow. Second operand has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:22,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:37:22,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:37:22,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:37:25,013 INFO L129 PetriNetUnfolder]: 2499/4650 cut-off events. [2021-06-11 20:37:25,014 INFO L130 PetriNetUnfolder]: For 147273/147275 co-relation queries the response was YES. [2021-06-11 20:37:25,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42392 conditions, 4650 events. 2499/4650 cut-off events. For 147273/147275 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 32801 event pairs, 217 based on Foata normal form. 3/4165 useless extension candidates. Maximal degree in co-relation 42173. Up to 2922 conditions per place. [2021-06-11 20:37:25,093 INFO L132 encePairwiseOnDemand]: 74/90 looper letters, 1135 selfloop transitions, 354 changer transitions 0/1507 dead transitions. [2021-06-11 20:37:25,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 1507 transitions, 30728 flow [2021-06-11 20:37:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-11 20:37:25,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-06-11 20:37:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1218 transitions. [2021-06-11 20:37:25,095 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884057971014492 [2021-06-11 20:37:25,095 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1218 transitions. [2021-06-11 20:37:25,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1218 transitions. [2021-06-11 20:37:25,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:37:25,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1218 transitions. [2021-06-11 20:37:25,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 52.95652173913044) internal successors, (1218), 23 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:25,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 90.0) internal successors, (2160), 24 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:25,097 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 90.0) internal successors, (2160), 24 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:25,097 INFO L185 Difference]: Start difference. First operand has 553 places, 1484 transitions, 27404 flow. Second operand 23 states and 1218 transitions. [2021-06-11 20:37:25,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 1507 transitions, 30728 flow [2021-06-11 20:37:25,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 1507 transitions, 29923 flow, removed 10 selfloop flow, removed 26 redundant places. [2021-06-11 20:37:25,858 INFO L241 Difference]: Finished difference. Result has 551 places, 1485 transitions, 27327 flow [2021-06-11 20:37:25,859 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=26601, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=353, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=27327, PETRI_PLACES=551, PETRI_TRANSITIONS=1485} [2021-06-11 20:37:25,860 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 498 predicate places. [2021-06-11 20:37:25,860 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:37:25,860 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 551 places, 1485 transitions, 27327 flow [2021-06-11 20:37:25,860 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 551 places, 1485 transitions, 27327 flow [2021-06-11 20:37:25,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 551 places, 1485 transitions, 27327 flow [2021-06-11 20:37:26,537 INFO L129 PetriNetUnfolder]: 1978/3912 cut-off events. [2021-06-11 20:37:26,537 INFO L130 PetriNetUnfolder]: For 73485/73563 co-relation queries the response was YES. [2021-06-11 20:37:26,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31003 conditions, 3912 events. 1978/3912 cut-off events. For 73485/73563 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 29221 event pairs, 58 based on Foata normal form. 9/3421 useless extension candidates. Maximal degree in co-relation 30796. Up to 1339 conditions per place. [2021-06-11 20:37:26,630 INFO L151 LiptonReduction]: Number of co-enabled transitions 6964 [2021-06-11 20:37:26,926 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:37:26,926 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:37:26,926 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1066 [2021-06-11 20:37:26,926 INFO L480 AbstractCegarLoop]: Abstraction has has 551 places, 1485 transitions, 27327 flow [2021-06-11 20:37:26,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:26,926 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:37:26,927 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] [2021-06-11 20:37:26,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-11 20:37:26,927 INFO L428 AbstractCegarLoop]: === Iteration 36 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:37:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:37:26,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1383059964, now seen corresponding path program 6 times [2021-06-11 20:37:26,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:37:26,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438097475] [2021-06-11 20:37:26,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:37:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:37:26,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:26,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:37:26,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:26,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:37:26,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:26,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:26,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:26,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:26,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:26,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:26,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:26,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:26,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:26,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:26,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:26,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:27,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:27,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:27,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:27,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:27,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:27,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:27,042 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:37:27,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:37:27,061 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:37:27,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:37:27,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438097475] [2021-06-11 20:37:27,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:37:27,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 20:37:27,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492964403] [2021-06-11 20:37:27,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-11 20:37:27,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:37:27,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-11 20:37:27,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-06-11 20:37:27,065 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:37:27,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 1485 transitions, 27327 flow. Second operand has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:27,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:37:27,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:37:27,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:37:29,074 INFO L129 PetriNetUnfolder]: 2491/4630 cut-off events. [2021-06-11 20:37:29,074 INFO L130 PetriNetUnfolder]: For 147330/147340 co-relation queries the response was YES. [2021-06-11 20:37:29,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42304 conditions, 4630 events. 2491/4630 cut-off events. For 147330/147340 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 32619 event pairs, 221 based on Foata normal form. 11/4161 useless extension candidates. Maximal degree in co-relation 42091. Up to 2922 conditions per place. [2021-06-11 20:37:29,166 INFO L132 encePairwiseOnDemand]: 74/90 looper letters, 1130 selfloop transitions, 344 changer transitions 16/1508 dead transitions. [2021-06-11 20:37:29,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 1508 transitions, 30686 flow [2021-06-11 20:37:29,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-11 20:37:29,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-06-11 20:37:29,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1218 transitions. [2021-06-11 20:37:29,168 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884057971014492 [2021-06-11 20:37:29,168 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1218 transitions. [2021-06-11 20:37:29,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1218 transitions. [2021-06-11 20:37:29,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:37:29,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1218 transitions. [2021-06-11 20:37:29,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 52.95652173913044) internal successors, (1218), 23 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:29,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 90.0) internal successors, (2160), 24 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:29,170 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 90.0) internal successors, (2160), 24 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:29,170 INFO L185 Difference]: Start difference. First operand has 551 places, 1485 transitions, 27327 flow. Second operand 23 states and 1218 transitions. [2021-06-11 20:37:29,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 1508 transitions, 30686 flow [2021-06-11 20:37:29,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 1508 transitions, 29972 flow, removed 1 selfloop flow, removed 21 redundant places. [2021-06-11 20:37:29,939 INFO L241 Difference]: Finished difference. Result has 553 places, 1469 transitions, 27040 flow [2021-06-11 20:37:29,940 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=26613, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=27040, PETRI_PLACES=553, PETRI_TRANSITIONS=1469} [2021-06-11 20:37:29,940 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 500 predicate places. [2021-06-11 20:37:29,940 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:37:29,940 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 553 places, 1469 transitions, 27040 flow [2021-06-11 20:37:29,940 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 553 places, 1469 transitions, 27040 flow [2021-06-11 20:37:29,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 528 places, 1469 transitions, 27040 flow [2021-06-11 20:37:30,227 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][1088], [Black: 1792#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (= x_6 x_0)), Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 1778#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11)), 1027#true, Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1782#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 233#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 1751#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 1768#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= x_0 (+ x_6 1))), 6#L91true, Black: 203#(and (= y_1 y_7) (= x_6 x_0)), Black: 235#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1753#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 237#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1758#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 207#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1774#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 255#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= temp_11 temp_5) (<= y_1 (+ temp_10 1)) (<= temp_5 temp_11) (= x_6 x_0)), Black: 745#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 239#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 764#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), 269#true, 781#true, Black: 483#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 x_0) (<= y_7 temp_4)), Black: 515#(and (<= temp_4 temp_10) (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 487#(and (<= temp_4 temp_10) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 456#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 489#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 459#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 523#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (= x_6 x_0)), Black: 460#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 23#L62true, Black: 495#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 465#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 469#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 471#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 507#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 475#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= x_6 x_0) (<= y_7 temp_4)), Black: 477#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 479#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 temp_4) (= x_6 x_0)), 544#true, 61#L30true, Black: 1056#(and (<= temp_5 x_6) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= y_7 temp_4) (= x_6 x_0)), Black: 304#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 274#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 306#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 275#(and (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 276#(and (<= (+ y_7 1) temp_4) (<= temp_4 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 800#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1856#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 1029#(and (= y_1 y_7) (= x_6 x_0)), Black: 1064#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 294#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), 67#thread6EXITtrue, Black: 804#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1068#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 280#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 1037#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 808#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1054#(and (<= temp_5 x_6) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (= x_6 x_0)), Black: 316#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 812#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 70#thread3EXITtrue, Black: 284#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), 1095#true, Black: 818#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 300#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 820#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 329#true, Black: 789#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 790#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4)), 848#true, Black: 86#(not f2_9), Black: 91#(not f1_2), Black: 592#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 594#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 598#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 582#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (= x_6 x_0)), Black: 586#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 96#(not f1_8), Black: 588#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 556#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 558#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 574#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 101#(not f2_3), 104#true, 616#true, Black: 1896#(and (= y_1 y_7) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (= x_6 x_0)), 1900#true, 1652#true, Black: 1120#(and (<= temp_5 x_6) (< x_0 (+ x_6 1)) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 1105#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 1108#(and (< x_0 (+ x_6 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 1132#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 336#(and (<= y_7 y_1) (<= y_1 y_7) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 385#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= temp_11 temp_5) (<= y_1 (+ temp_10 1)) (<= temp_5 temp_11) (= x_6 x_0)), Black: 369#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 340#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 885#(and (<= x_6 (+ temp_5 1)) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), Black: 361#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 347#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), Black: 871#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= x_6 x_0) (<= y_7 temp_4)), Black: 365#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 858#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 333#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 129#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ y_1 1)) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), Black: 367#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 875#(and (<= temp_5 x_6) (= y_1 y_7) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_7 temp_4) (= x_6 x_0)), Black: 114#(and (<= y_7 (+ temp_5 2)) (<= (+ temp_5 2) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), 398#true, Black: 115#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ y_1 1)) (<= (+ temp_5 1) x_6) (<= (+ y_1 1) y_7)), Black: 1384#(and (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 121#(and (<= temp_10 (+ y_1 1)) (<= y_7 (+ y_1 2)) (<= (+ y_1 2) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= (+ y_1 1) temp_10)), Black: 1402#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 106#(and (= y_1 y_7) (= x_6 x_0)), Black: 139#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 1937#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (= x_6 x_0)), Black: 109#(and (<= y_7 (+ y_1 1)) (<= (+ x_0 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), Black: 125#(and (<= y_7 (+ temp_5 2)) (<= y_7 (+ y_1 1)) (<= (+ temp_5 2) y_7) (<= (+ x_0 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), 150#true, Black: 1665#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 1681#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1667#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1669#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4)), Black: 1654#(and (= y_1 y_7) (= x_6 x_0)), Black: 1658#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 1675#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1659#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4)), Black: 1691#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 1660#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1677#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 672#(and (<= temp_4 temp_10) (<= temp_5 x_6) (= y_1 y_7) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (= x_6 x_0)), Black: 674#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 628#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 662#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 670#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 400#(and (= y_1 y_7) (= x_6 x_0)), Black: 434#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 405#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 438#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 406#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 422#(and (<= x_0 x_6) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 407#(and (<= x_0 x_6) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0)), Black: 408#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 178#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 424#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 164#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 426#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 411#(and (<= y_1 y_7) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 152#(and (= y_1 y_7) (= x_6 x_0)), Black: 184#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 430#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 156#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 452#true, Black: 172#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 158#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 918#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 190#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 174#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 201#true, Black: 1741#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (= x_6 x_0)), 1745#true, 735#true]) [2021-06-11 20:37:30,227 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:37:30,227 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:30,227 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:30,227 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:30,529 INFO L129 PetriNetUnfolder]: 1931/3803 cut-off events. [2021-06-11 20:37:30,529 INFO L130 PetriNetUnfolder]: For 76802/76888 co-relation queries the response was YES. [2021-06-11 20:37:30,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30738 conditions, 3803 events. 1931/3803 cut-off events. For 76802/76888 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 28244 event pairs, 18 based on Foata normal form. 11/3342 useless extension candidates. Maximal degree in co-relation 30558. Up to 1314 conditions per place. [2021-06-11 20:37:30,624 INFO L151 LiptonReduction]: Number of co-enabled transitions 6828 [2021-06-11 20:37:30,917 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:37:30,917 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:37:30,917 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 977 [2021-06-11 20:37:30,918 INFO L480 AbstractCegarLoop]: Abstraction has has 528 places, 1469 transitions, 27040 flow [2021-06-11 20:37:30,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:30,918 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:37:30,918 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] [2021-06-11 20:37:30,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-11 20:37:30,918 INFO L428 AbstractCegarLoop]: === Iteration 37 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:37:30,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:37:30,918 INFO L82 PathProgramCache]: Analyzing trace with hash -928497331, now seen corresponding path program 9 times [2021-06-11 20:37:30,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:37:30,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229614902] [2021-06-11 20:37:30,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:37:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:37:30,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:30,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:37:30,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:30,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:37:30,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:30,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:30,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:30,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:30,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:30,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:30,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:30,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:30,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:30,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:31,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:31,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:31,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:31,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:31,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:31,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:31,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:31,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:31,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:31,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:31,111 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:37:31,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:37:31,135 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:37:31,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:31,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:37:31,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229614902] [2021-06-11 20:37:31,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:37:31,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-06-11 20:37:31,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678848319] [2021-06-11 20:37:31,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-11 20:37:31,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:37:31,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-11 20:37:31,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-06-11 20:37:31,141 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:37:31,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 1469 transitions, 27040 flow. Second operand has 15 states, 15 states have (on average 49.06666666666667) internal successors, (736), 15 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:31,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:37:31,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:37:31,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:37:33,491 INFO L129 PetriNetUnfolder]: 2531/4678 cut-off events. [2021-06-11 20:37:33,491 INFO L130 PetriNetUnfolder]: For 152455/152457 co-relation queries the response was YES. [2021-06-11 20:37:33,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42969 conditions, 4678 events. 2531/4678 cut-off events. For 152455/152457 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 32846 event pairs, 222 based on Foata normal form. 3/4192 useless extension candidates. Maximal degree in co-relation 42766. Up to 2721 conditions per place. [2021-06-11 20:37:33,575 INFO L132 encePairwiseOnDemand]: 74/90 looper letters, 842 selfloop transitions, 683 changer transitions 0/1543 dead transitions. [2021-06-11 20:37:33,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 1543 transitions, 31507 flow [2021-06-11 20:37:33,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-11 20:37:33,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-06-11 20:37:33,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1339 transitions. [2021-06-11 20:37:33,577 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5951111111111111 [2021-06-11 20:37:33,577 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1339 transitions. [2021-06-11 20:37:33,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1339 transitions. [2021-06-11 20:37:33,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:37:33,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1339 transitions. [2021-06-11 20:37:33,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 53.56) internal successors, (1339), 25 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:33,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 90.0) internal successors, (2340), 26 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:33,579 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 90.0) internal successors, (2340), 26 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:33,579 INFO L185 Difference]: Start difference. First operand has 528 places, 1469 transitions, 27040 flow. Second operand 25 states and 1339 transitions. [2021-06-11 20:37:33,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 1543 transitions, 31507 flow [2021-06-11 20:37:34,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 1543 transitions, 30773 flow, removed 28 selfloop flow, removed 24 redundant places. [2021-06-11 20:37:34,385 INFO L241 Difference]: Finished difference. Result has 532 places, 1513 transitions, 28682 flow [2021-06-11 20:37:34,386 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=26332, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=643, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=820, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=28682, PETRI_PLACES=532, PETRI_TRANSITIONS=1513} [2021-06-11 20:37:34,387 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 479 predicate places. [2021-06-11 20:37:34,387 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:37:34,387 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 532 places, 1513 transitions, 28682 flow [2021-06-11 20:37:34,388 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 532 places, 1513 transitions, 28682 flow [2021-06-11 20:37:34,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 532 places, 1513 transitions, 28682 flow [2021-06-11 20:37:34,753 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][1047], [Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 1778#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11)), 1027#true, Black: 1782#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1751#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 233#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 1768#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= x_0 (+ x_6 1))), 6#L91true, Black: 203#(and (= y_1 y_7) (= x_6 x_0)), Black: 1753#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 235#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 237#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1758#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 207#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1774#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 255#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= temp_11 temp_5) (<= y_1 (+ temp_10 1)) (<= temp_5 temp_11) (= x_6 x_0)), Black: 745#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 239#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 764#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), 781#true, 269#true, Black: 483#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 x_0) (<= y_7 temp_4)), Black: 515#(and (<= temp_4 temp_10) (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 487#(and (<= temp_4 temp_10) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 456#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 489#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 459#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 523#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (= x_6 x_0)), Black: 460#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 23#L62true, Black: 495#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 465#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 469#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 471#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 507#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 475#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= x_6 x_0) (<= y_7 temp_4)), Black: 477#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 479#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 temp_4) (= x_6 x_0)), 544#true, 61#L30true, Black: 1056#(and (<= temp_5 x_6) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= y_7 temp_4) (= x_6 x_0)), Black: 304#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 274#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 306#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 275#(and (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 1060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 276#(and (<= (+ y_7 1) temp_4) (<= temp_4 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 800#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1029#(and (= y_1 y_7) (= x_6 x_0)), Black: 294#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), Black: 1064#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 67#thread6EXITtrue, Black: 1068#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 804#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 280#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 808#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 70#thread3EXITtrue, Black: 316#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 812#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1054#(and (<= temp_5 x_6) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (= x_6 x_0)), Black: 284#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), 1095#true, Black: 300#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 818#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 329#true, Black: 820#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 789#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 790#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4)), 848#true, Black: 86#(not f2_9), Black: 91#(not f1_2), Black: 592#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 594#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 598#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 582#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (= x_6 x_0)), Black: 586#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 96#(not f1_8), Black: 588#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 556#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 558#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 101#(not f2_3), Black: 574#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), 104#true, 616#true, 1652#true, Black: 1120#(and (<= temp_5 x_6) (< x_0 (+ x_6 1)) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 1105#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 1108#(and (< x_0 (+ x_6 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 1132#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 336#(and (<= y_7 y_1) (<= y_1 y_7) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 385#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= temp_11 temp_5) (<= y_1 (+ temp_10 1)) (<= temp_5 temp_11) (= x_6 x_0)), Black: 369#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 340#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 885#(and (<= x_6 (+ temp_5 1)) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), Black: 361#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 347#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), Black: 871#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= x_6 x_0) (<= y_7 temp_4)), Black: 858#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 365#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 333#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 129#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ y_1 1)) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), Black: 367#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 875#(and (<= temp_5 x_6) (= y_1 y_7) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_7 temp_4) (= x_6 x_0)), 398#true, Black: 114#(and (<= y_7 (+ temp_5 2)) (<= (+ temp_5 2) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 115#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ y_1 1)) (<= (+ temp_5 1) x_6) (<= (+ y_1 1) y_7)), Black: 1384#(and (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 1402#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 121#(and (<= temp_10 (+ y_1 1)) (<= y_7 (+ y_1 2)) (<= (+ y_1 2) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= (+ y_1 1) temp_10)), Black: 106#(and (= y_1 y_7) (= x_6 x_0)), Black: 139#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), 1940#true, Black: 109#(and (<= y_7 (+ y_1 1)) (<= (+ x_0 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), Black: 125#(and (<= y_7 (+ temp_5 2)) (<= y_7 (+ y_1 1)) (<= (+ temp_5 2) y_7) (<= (+ x_0 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), 150#true, Black: 1665#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 1681#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1667#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1669#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4)), Black: 1654#(and (= y_1 y_7) (= x_6 x_0)), Black: 1658#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 1675#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1659#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4)), Black: 1660#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1677#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 674#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 628#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 662#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 670#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 400#(and (= y_1 y_7) (= x_6 x_0)), Black: 434#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 405#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 438#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 406#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 422#(and (<= x_0 x_6) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 407#(and (<= x_0 x_6) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0)), Black: 408#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 178#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 424#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 164#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 426#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 411#(and (<= y_1 y_7) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 152#(and (= y_1 y_7) (= x_6 x_0)), Black: 184#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 430#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 452#true, Black: 156#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1986#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 172#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1974#(and (<= x_0 temp_11) (<= x_6 (+ temp_5 1)) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), Black: 158#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 1980#(and (<= x_0 x_6) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0) (<= (+ temp_5 1) x_6)), Black: 918#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 190#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 1966#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 174#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 201#true, 1745#true, 735#true]) [2021-06-11 20:37:34,753 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:37:34,753 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:34,754 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:34,754 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:35,053 INFO L129 PetriNetUnfolder]: 2061/4023 cut-off events. [2021-06-11 20:37:35,054 INFO L130 PetriNetUnfolder]: For 89111/89244 co-relation queries the response was YES. [2021-06-11 20:37:35,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33269 conditions, 4023 events. 2061/4023 cut-off events. For 89111/89244 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 29917 event pairs, 32 based on Foata normal form. 15/3514 useless extension candidates. Maximal degree in co-relation 33058. Up to 1406 conditions per place. [2021-06-11 20:37:35,146 INFO L151 LiptonReduction]: Number of co-enabled transitions 7010 [2021-06-11 20:37:35,455 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:37:35,455 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:37:35,455 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1068 [2021-06-11 20:37:35,456 INFO L480 AbstractCegarLoop]: Abstraction has has 532 places, 1513 transitions, 28682 flow [2021-06-11 20:37:35,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 49.06666666666667) internal successors, (736), 15 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:35,456 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:37:35,456 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] [2021-06-11 20:37:35,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-11 20:37:35,456 INFO L428 AbstractCegarLoop]: === Iteration 38 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:37:35,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:37:35,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1247684613, now seen corresponding path program 10 times [2021-06-11 20:37:35,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:37:35,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294554103] [2021-06-11 20:37:35,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:37:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:37:35,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:35,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:37:35,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:35,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:37:35,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:35,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:35,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:35,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:35,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:35,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:35,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:35,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:35,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:35,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:35,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:35,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:35,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:35,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:35,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:35,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:35,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:35,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:35,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:35,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:35,628 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:37:35,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:37:35,647 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:37:35,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:37:35,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294554103] [2021-06-11 20:37:35,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:37:35,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-06-11 20:37:35,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399400074] [2021-06-11 20:37:35,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-11 20:37:35,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:37:35,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-11 20:37:35,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-06-11 20:37:35,650 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2021-06-11 20:37:35,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 1513 transitions, 28682 flow. Second operand has 15 states, 15 states have (on average 49.06666666666667) internal successors, (736), 15 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:35,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:37:35,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2021-06-11 20:37:35,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:37:37,792 INFO L129 PetriNetUnfolder]: 2571/4790 cut-off events. [2021-06-11 20:37:37,792 INFO L130 PetriNetUnfolder]: For 161185/161198 co-relation queries the response was YES. [2021-06-11 20:37:37,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44429 conditions, 4790 events. 2571/4790 cut-off events. For 161185/161198 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 34093 event pairs, 236 based on Foata normal form. 13/4290 useless extension candidates. Maximal degree in co-relation 44213. Up to 2798 conditions per place. [2021-06-11 20:37:37,880 INFO L132 encePairwiseOnDemand]: 74/90 looper letters, 894 selfloop transitions, 650 changer transitions 0/1562 dead transitions. [2021-06-11 20:37:37,880 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 1562 transitions, 32588 flow [2021-06-11 20:37:37,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-11 20:37:37,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-06-11 20:37:37,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1165 transitions. [2021-06-11 20:37:37,881 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5883838383838383 [2021-06-11 20:37:37,881 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1165 transitions. [2021-06-11 20:37:37,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1165 transitions. [2021-06-11 20:37:37,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:37:37,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1165 transitions. [2021-06-11 20:37:37,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 52.95454545454545) internal successors, (1165), 22 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:37,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 90.0) internal successors, (2070), 23 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:37,884 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 90.0) internal successors, (2070), 23 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:37,884 INFO L185 Difference]: Start difference. First operand has 532 places, 1513 transitions, 28682 flow. Second operand 22 states and 1165 transitions. [2021-06-11 20:37:37,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 1562 transitions, 32588 flow [2021-06-11 20:37:38,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 1562 transitions, 31358 flow, removed 236 selfloop flow, removed 12 redundant places. [2021-06-11 20:37:38,875 INFO L241 Difference]: Finished difference. Result has 546 places, 1538 transitions, 29420 flow [2021-06-11 20:37:38,876 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=27462, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=627, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=882, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=29420, PETRI_PLACES=546, PETRI_TRANSITIONS=1538} [2021-06-11 20:37:38,876 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 493 predicate places. [2021-06-11 20:37:38,876 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:37:38,876 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 546 places, 1538 transitions, 29420 flow [2021-06-11 20:37:38,876 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 546 places, 1538 transitions, 29420 flow [2021-06-11 20:37:38,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 546 places, 1538 transitions, 29420 flow [2021-06-11 20:37:39,190 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][106], [Black: 1778#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), 1027#true, Black: 1782#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1751#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 233#(and (<= temp_5 x_6) 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(+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 109#(and (<= y_7 (+ y_1 1)) (<= (+ x_0 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), 1940#true, Black: 125#(and (<= y_7 (+ temp_5 2)) (<= y_7 (+ y_1 1)) (<= (+ temp_5 2) y_7) (<= (+ x_0 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), 150#true, Black: 1665#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 1681#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1667#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1669#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4)), Black: 1658#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 1675#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1659#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4)), Black: 1660#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1677#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 674#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 628#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 662#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 670#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 400#(and (= y_1 y_7) (= x_6 x_0)), Black: 434#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 405#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 438#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 406#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 422#(and (<= x_0 x_6) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 407#(and (<= x_0 x_6) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0)), Black: 408#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 178#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 424#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 164#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 426#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 411#(and (<= y_1 y_7) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 152#(and (= y_1 y_7) (= x_6 x_0)), Black: 184#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 430#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 156#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1986#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), 452#true, Black: 172#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1974#(and (<= x_0 temp_11) (<= x_6 (+ temp_5 1)) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), Black: 158#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 918#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1980#(and (<= x_0 x_6) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0) (<= (+ temp_5 1) x_6)), Black: 1966#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 190#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 174#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 1992#true, 201#true, 1745#true, 735#true, Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1)))]) [2021-06-11 20:37:39,190 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:37:39,190 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:39,191 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:39,191 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:39,532 INFO L129 PetriNetUnfolder]: 2076/4034 cut-off events. [2021-06-11 20:37:39,532 INFO L130 PetriNetUnfolder]: For 87717/87874 co-relation queries the response was YES. [2021-06-11 20:37:39,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33928 conditions, 4034 events. 2076/4034 cut-off events. For 87717/87874 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 30147 event pairs, 45 based on Foata normal form. 16/3522 useless extension candidates. Maximal degree in co-relation 33710. Up to 1452 conditions per place. [2021-06-11 20:37:39,634 INFO L151 LiptonReduction]: Number of co-enabled transitions 7142 [2021-06-11 20:37:39,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:39,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:37:40,532 INFO L163 LiptonReduction]: Checked pairs total: 20 [2021-06-11 20:37:40,532 INFO L165 LiptonReduction]: Total number of compositions: 4 [2021-06-11 20:37:40,532 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1656 [2021-06-11 20:37:40,533 INFO L480 AbstractCegarLoop]: Abstraction has has 546 places, 1538 transitions, 29420 flow [2021-06-11 20:37:40,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 49.06666666666667) internal successors, (736), 15 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:40,533 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:37:40,533 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] [2021-06-11 20:37:40,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-11 20:37:40,533 INFO L428 AbstractCegarLoop]: === Iteration 39 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:37:40,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:37:40,533 INFO L82 PathProgramCache]: Analyzing trace with hash -74939523, now seen corresponding path program 11 times [2021-06-11 20:37:40,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:37:40,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098827460] [2021-06-11 20:37:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:37:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:37:40,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:40,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:37:40,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:40,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:37:40,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:40,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:40,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:40,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:40,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:40,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:40,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:40,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:40,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:40,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:40,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:40,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:40,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:40,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:40,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:40,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:40,688 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:37:40,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:37:40,697 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:37:40,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:37:40,716 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:37:40,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:37:40,737 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-06-11 20:37:40,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:37:40,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098827460] [2021-06-11 20:37:40,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:37:40,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:37:40,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214232372] [2021-06-11 20:37:40,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:37:40,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:37:40,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:37:40,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:37:40,741 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:37:40,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 1538 transitions, 29420 flow. Second operand has 14 states, 14 states have (on average 49.142857142857146) internal successors, (688), 14 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:40,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:37:40,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:37:40,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:37:43,893 INFO L129 PetriNetUnfolder]: 2552/4776 cut-off events. [2021-06-11 20:37:43,893 INFO L130 PetriNetUnfolder]: For 148611/148613 co-relation queries the response was YES. [2021-06-11 20:37:43,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44292 conditions, 4776 events. 2552/4776 cut-off events. For 148611/148613 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 34083 event pairs, 230 based on Foata normal form. 3/4283 useless extension candidates. Maximal degree in co-relation 43939. Up to 2495 conditions per place. [2021-06-11 20:37:43,978 INFO L132 encePairwiseOnDemand]: 74/94 looper letters, 619 selfloop transitions, 947 changer transitions 3/1587 dead transitions. [2021-06-11 20:37:43,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 1587 transitions, 33314 flow [2021-06-11 20:37:43,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-11 20:37:43,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-06-11 20:37:43,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1918 transitions. [2021-06-11 20:37:43,980 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5667848699763594 [2021-06-11 20:37:43,980 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1918 transitions. [2021-06-11 20:37:43,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1918 transitions. [2021-06-11 20:37:43,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:37:43,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1918 transitions. [2021-06-11 20:37:43,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.27777777777778) internal successors, (1918), 36 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:43,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:43,983 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:43,984 INFO L185 Difference]: Start difference. First operand has 546 places, 1538 transitions, 29420 flow. Second operand 36 states and 1918 transitions. [2021-06-11 20:37:43,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 1587 transitions, 33314 flow [2021-06-11 20:37:44,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 1587 transitions, 32391 flow, removed 110 selfloop flow, removed 12 redundant places. [2021-06-11 20:37:44,866 INFO L241 Difference]: Finished difference. Result has 572 places, 1561 transitions, 30986 flow [2021-06-11 20:37:44,867 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=28539, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=925, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=30986, PETRI_PLACES=572, PETRI_TRANSITIONS=1561} [2021-06-11 20:37:44,867 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 519 predicate places. [2021-06-11 20:37:44,867 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:37:44,867 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 572 places, 1561 transitions, 30986 flow [2021-06-11 20:37:44,867 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 572 places, 1561 transitions, 30986 flow [2021-06-11 20:37:44,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 572 places, 1561 transitions, 30986 flow [2021-06-11 20:37:45,314 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][94], [1027#true, Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 1778#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1782#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 233#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 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temp_4) (<= x_0 (+ x_6 1))), Black: 1667#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1669#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4)), Black: 1658#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 1675#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1659#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4)), Black: 1660#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1677#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 674#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 628#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 662#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 670#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 400#(and (= y_1 y_7) (= x_6 x_0)), Black: 434#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 405#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 438#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 406#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 422#(and (<= x_0 x_6) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 407#(and (<= x_0 x_6) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0)), Black: 408#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 178#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 424#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 164#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 426#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 152#(and (= y_1 y_7) (= x_6 x_0)), Black: 411#(and (<= y_1 y_7) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 184#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 430#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 156#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1986#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), 452#true, Black: 1974#(and (<= x_0 temp_11) (<= x_6 (+ temp_5 1)) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), Black: 172#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1980#(and (<= x_0 x_6) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0) (<= (+ temp_5 1) x_6)), Black: 158#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 918#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 190#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 1966#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 174#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 1992#true, 201#true, 1745#true, 735#true, Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:37:45,314 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:37:45,314 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:45,314 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:45,314 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:45,534 INFO L129 PetriNetUnfolder]: 2077/4057 cut-off events. [2021-06-11 20:37:45,534 INFO L130 PetriNetUnfolder]: For 87113/87288 co-relation queries the response was YES. [2021-06-11 20:37:45,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35008 conditions, 4057 events. 2077/4057 cut-off events. For 87113/87288 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 30449 event pairs, 45 based on Foata normal form. 17/3545 useless extension candidates. Maximal degree in co-relation 34641. Up to 1450 conditions per place. [2021-06-11 20:37:45,630 INFO L151 LiptonReduction]: Number of co-enabled transitions 7274 [2021-06-11 20:37:45,977 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:37:45,977 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:37:45,977 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1110 [2021-06-11 20:37:45,978 INFO L480 AbstractCegarLoop]: Abstraction has has 572 places, 1561 transitions, 30986 flow [2021-06-11 20:37:45,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.142857142857146) internal successors, (688), 14 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:45,978 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:37:45,978 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] [2021-06-11 20:37:45,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-11 20:37:45,978 INFO L428 AbstractCegarLoop]: === Iteration 40 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:37:45,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:37:45,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1742381475, now seen corresponding path program 1 times [2021-06-11 20:37:45,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:37:45,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707434877] [2021-06-11 20:37:45,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:37:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:37:45,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:45,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:37:45,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:45,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:37:46,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:46,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:46,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:46,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:46,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:46,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:46,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:46,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:46,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:46,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:46,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:46,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:46,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:46,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:46,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:46,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:46,115 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:37:46,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:37:46,134 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:37:46,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:37:46,152 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:37:46,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:46,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:37:46,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707434877] [2021-06-11 20:37:46,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:37:46,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:37:46,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265508657] [2021-06-11 20:37:46,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:37:46,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:37:46,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:37:46,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:37:46,156 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:37:46,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 1561 transitions, 30986 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:46,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:37:46,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:37:46,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:37:48,349 INFO L129 PetriNetUnfolder]: 2564/4811 cut-off events. [2021-06-11 20:37:48,349 INFO L130 PetriNetUnfolder]: For 150100/150104 co-relation queries the response was YES. [2021-06-11 20:37:48,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45561 conditions, 4811 events. 2564/4811 cut-off events. For 150100/150104 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 34599 event pairs, 236 based on Foata normal form. 5/4306 useless extension candidates. Maximal degree in co-relation 45185. Up to 2814 conditions per place. [2021-06-11 20:37:48,441 INFO L132 encePairwiseOnDemand]: 75/94 looper letters, 890 selfloop transitions, 677 changer transitions 0/1585 dead transitions. [2021-06-11 20:37:48,441 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 1585 transitions, 34480 flow [2021-06-11 20:37:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-11 20:37:48,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-06-11 20:37:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1180 transitions. [2021-06-11 20:37:48,442 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5705996131528046 [2021-06-11 20:37:48,442 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1180 transitions. [2021-06-11 20:37:48,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1180 transitions. [2021-06-11 20:37:48,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:37:48,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1180 transitions. [2021-06-11 20:37:48,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 53.63636363636363) internal successors, (1180), 22 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:48,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 94.0) internal successors, (2162), 23 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:48,445 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 94.0) internal successors, (2162), 23 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:48,445 INFO L185 Difference]: Start difference. First operand has 572 places, 1561 transitions, 30986 flow. Second operand 22 states and 1180 transitions. [2021-06-11 20:37:48,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 1585 transitions, 34480 flow [2021-06-11 20:37:49,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 1585 transitions, 33090 flow, removed 61 selfloop flow, removed 27 redundant places. [2021-06-11 20:37:49,432 INFO L241 Difference]: Finished difference. Result has 569 places, 1567 transitions, 31076 flow [2021-06-11 20:37:49,433 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=29596, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=673, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=886, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=31076, PETRI_PLACES=569, PETRI_TRANSITIONS=1567} [2021-06-11 20:37:49,433 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 516 predicate places. [2021-06-11 20:37:49,433 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:37:49,433 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 569 places, 1567 transitions, 31076 flow [2021-06-11 20:37:49,433 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 569 places, 1567 transitions, 31076 flow [2021-06-11 20:37:49,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 569 places, 1567 transitions, 31076 flow [2021-06-11 20:37:49,843 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][104], [Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 1778#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11)), 1027#true, Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1782#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 233#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 1751#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 1768#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= x_0 (+ x_6 1))), 6#L91true, Black: 203#(and (= y_1 y_7) (= x_6 x_0)), Black: 235#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1753#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 237#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1758#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 207#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1774#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ 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INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][104], [Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 1778#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11)), 1027#true, Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1782#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 233#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 1751#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 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y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:37:49,952 INFO L384 tUnfolder$Statistics]: this new event has 20 ancestors and is cut-off event [2021-06-11 20:37:49,952 INFO L387 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2021-06-11 20:37:49,952 INFO L387 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2021-06-11 20:37:49,952 INFO L387 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2021-06-11 20:37:50,177 INFO L129 PetriNetUnfolder]: 2093/4135 cut-off events. [2021-06-11 20:37:50,177 INFO L130 PetriNetUnfolder]: For 87384/87584 co-relation queries the response was YES. [2021-06-11 20:37:50,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35674 conditions, 4135 events. 2093/4135 cut-off events. For 87384/87584 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 31303 event pairs, 47 based on Foata normal form. 18/3610 useless extension candidates. Maximal degree in co-relation 35307. Up to 1463 conditions per place. [2021-06-11 20:37:50,289 INFO L151 LiptonReduction]: Number of co-enabled transitions 7354 [2021-06-11 20:37:50,651 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:37:50,651 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:37:50,651 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1218 [2021-06-11 20:37:50,651 INFO L480 AbstractCegarLoop]: Abstraction has has 569 places, 1567 transitions, 31076 flow [2021-06-11 20:37:50,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:50,652 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:37:50,652 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 20:37:50,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-11 20:37:50,652 INFO L428 AbstractCegarLoop]: === Iteration 41 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:37:50,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:37:50,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1533378162, now seen corresponding path program 1 times [2021-06-11 20:37:50,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:37:50,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664779162] [2021-06-11 20:37:50,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:37:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:37:50,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:50,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:37:50,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:50,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:37:50,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:50,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:50,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:50,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:50,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:50,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:50,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:50,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:50,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:50,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:50,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:50,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:50,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:50,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:50,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:50,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:50,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:50,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:50,799 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:37:50,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:37:50,809 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:37:50,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:50,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:37:50,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664779162] [2021-06-11 20:37:50,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:37:50,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:37:50,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330814033] [2021-06-11 20:37:50,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:37:50,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:37:50,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:37:50,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:37:50,813 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:37:50,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 1567 transitions, 31076 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:50,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:37:50,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:37:50,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:37:53,436 INFO L129 PetriNetUnfolder]: 2609/4938 cut-off events. [2021-06-11 20:37:53,436 INFO L130 PetriNetUnfolder]: For 150991/150993 co-relation queries the response was YES. [2021-06-11 20:37:53,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46320 conditions, 4938 events. 2609/4938 cut-off events. For 150991/150993 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 36033 event pairs, 220 based on Foata normal form. 3/4398 useless extension candidates. Maximal degree in co-relation 45938. Up to 2826 conditions per place. [2021-06-11 20:37:53,531 INFO L132 encePairwiseOnDemand]: 75/94 looper letters, 897 selfloop transitions, 696 changer transitions 0/1611 dead transitions. [2021-06-11 20:37:53,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 1611 transitions, 34914 flow [2021-06-11 20:37:53,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-11 20:37:53,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-06-11 20:37:53,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1337 transitions. [2021-06-11 20:37:53,533 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.568936170212766 [2021-06-11 20:37:53,533 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1337 transitions. [2021-06-11 20:37:53,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1337 transitions. [2021-06-11 20:37:53,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:37:53,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1337 transitions. [2021-06-11 20:37:53,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 53.48) internal successors, (1337), 25 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:53,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 94.0) internal successors, (2444), 26 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:53,535 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 94.0) internal successors, (2444), 26 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:53,535 INFO L185 Difference]: Start difference. First operand has 569 places, 1567 transitions, 31076 flow. Second operand 25 states and 1337 transitions. [2021-06-11 20:37:53,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 1611 transitions, 34914 flow [2021-06-11 20:37:54,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 1611 transitions, 33900 flow, removed 69 selfloop flow, removed 14 redundant places. [2021-06-11 20:37:54,411 INFO L241 Difference]: Finished difference. Result has 583 places, 1587 transitions, 31811 flow [2021-06-11 20:37:54,412 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=30143, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=677, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=885, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=31811, PETRI_PLACES=583, PETRI_TRANSITIONS=1587} [2021-06-11 20:37:54,412 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 530 predicate places. [2021-06-11 20:37:54,412 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:37:54,412 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 583 places, 1587 transitions, 31811 flow [2021-06-11 20:37:54,412 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 583 places, 1587 transitions, 31811 flow [2021-06-11 20:37:54,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 583 places, 1587 transitions, 31811 flow [2021-06-11 20:37:54,731 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][96], [Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 1778#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11)), 1027#true, Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1782#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 233#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 1751#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 1768#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= x_0 (+ x_6 1))), 6#L91true, Black: 203#(and (= y_1 y_7) (= x_6 x_0)), Black: 235#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1753#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 237#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1758#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 207#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1774#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 255#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= temp_11 temp_5) (<= y_1 (+ temp_10 1)) (<= temp_5 temp_11) (= x_6 x_0)), Black: 745#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 239#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 764#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), 269#true, 781#true, Black: 483#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 x_0) (<= y_7 temp_4)), Black: 515#(and (<= temp_4 temp_10) (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 487#(and (<= temp_4 temp_10) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 456#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 489#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 459#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 523#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (= x_6 x_0)), Black: 460#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 23#L62true, Black: 495#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 465#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 469#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 471#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 507#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 475#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= x_6 x_0) (<= y_7 temp_4)), Black: 477#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 479#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 temp_4) (= x_6 x_0)), 544#true, Black: 2070#(and (<= temp_4 temp_10) (< x_0 (+ x_6 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), 61#L30true, Black: 2090#(and (<= x_6 (+ temp_5 1)) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), Black: 1056#(and (<= temp_5 x_6) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= y_7 temp_4) (= x_6 x_0)), Black: 304#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 274#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), 2111#true, Black: 306#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 275#(and (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 276#(and (<= (+ y_7 1) temp_4) (<= temp_4 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 1029#(and (= y_1 y_7) (= x_6 x_0)), Black: 800#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1064#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 294#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), Black: 804#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1068#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 280#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 808#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 69#L73true, Black: 1054#(and (<= temp_5 x_6) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (= x_6 x_0)), Black: 316#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 812#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 70#thread3EXITtrue, Black: 284#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= x_0 (+ x_6 1)) (<= temp_5 (+ x_6 1))), 1095#true, Black: 818#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 300#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 820#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 329#true, Black: 789#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 790#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4)), 848#true, Black: 86#(not f2_9), Black: 91#(not f1_2), Black: 592#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= 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[2021-06-11 20:37:54,731 INFO L384 tUnfolder$Statistics]: this new event has 18 ancestors and is cut-off event [2021-06-11 20:37:54,732 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 20:37:54,732 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 20:37:54,732 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 20:37:54,751 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][96], [Black: 1778#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11)), 1027#true, Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 217#(and (<= (+ y_7 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x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:37:54,751 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:37:54,751 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:54,751 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:54,751 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:54,869 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][96], [1027#true, Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 1778#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1782#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 233#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 1751#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 1768#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 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existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:54,869 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:54,869 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:54,898 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][96], [Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 1778#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11)), 1027#true, Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1782#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ 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407#(and (<= x_0 x_6) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0)), Black: 408#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 178#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 424#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 164#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 426#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 411#(and (<= y_1 y_7) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 152#(and (= y_1 y_7) (= x_6 x_0)), Black: 184#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 430#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 156#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1986#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), 452#true, Black: 172#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1974#(and (<= x_0 temp_11) (<= x_6 (+ temp_5 1)) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), Black: 158#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 918#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1980#(and (<= x_0 x_6) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0) (<= (+ temp_5 1) x_6)), Black: 190#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 1966#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 174#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 1992#true, 201#true, 1745#true, 735#true, Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:37:54,899 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:37:54,899 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:54,899 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:54,899 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:54,899 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:37:55,153 INFO L129 PetriNetUnfolder]: 2131/4227 cut-off events. [2021-06-11 20:37:55,153 INFO L130 PetriNetUnfolder]: For 88156/88354 co-relation queries the response was YES. [2021-06-11 20:37:55,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36749 conditions, 4227 events. 2131/4227 cut-off events. For 88156/88354 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 32296 event pairs, 52 based on Foata normal form. 28/3688 useless extension candidates. Maximal degree in co-relation 36513. Up to 1482 conditions per place. [2021-06-11 20:37:55,259 INFO L151 LiptonReduction]: Number of co-enabled transitions 7544 [2021-06-11 20:37:55,611 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:37:55,611 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:37:55,611 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1199 [2021-06-11 20:37:55,612 INFO L480 AbstractCegarLoop]: Abstraction has has 583 places, 1587 transitions, 31811 flow [2021-06-11 20:37:55,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:55,612 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:37:55,612 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] [2021-06-11 20:37:55,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-11 20:37:55,612 INFO L428 AbstractCegarLoop]: === Iteration 42 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:37:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:37:55,612 INFO L82 PathProgramCache]: Analyzing trace with hash -833690488, now seen corresponding path program 2 times [2021-06-11 20:37:55,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:37:55,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410638681] [2021-06-11 20:37:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:37:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:37:55,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:55,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:37:55,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:55,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:37:55,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:55,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:55,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:55,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:55,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:55,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:55,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:55,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:55,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:55,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:55,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:55,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:55,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:55,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:37:55,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:55,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:55,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:37:55,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:37:55,788 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:37:55,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:37:55,813 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:37:55,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:37:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:37:55,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410638681] [2021-06-11 20:37:55,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:37:55,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:37:55,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746593899] [2021-06-11 20:37:55,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:37:55,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:37:55,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:37:55,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:37:55,818 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:37:55,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 1587 transitions, 31811 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:55,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:37:55,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:37:55,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:37:58,573 INFO L129 PetriNetUnfolder]: 2610/4964 cut-off events. [2021-06-11 20:37:58,573 INFO L130 PetriNetUnfolder]: For 151977/151979 co-relation queries the response was YES. [2021-06-11 20:37:58,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47086 conditions, 4964 events. 2610/4964 cut-off events. For 151977/151979 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 36398 event pairs, 224 based on Foata normal form. 3/4421 useless extension candidates. Maximal degree in co-relation 46697. Up to 2736 conditions per place. [2021-06-11 20:37:58,681 INFO L132 encePairwiseOnDemand]: 75/94 looper letters, 823 selfloop transitions, 780 changer transitions 0/1621 dead transitions. [2021-06-11 20:37:58,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 1621 transitions, 35509 flow [2021-06-11 20:37:58,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-11 20:37:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-06-11 20:37:58,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1645 transitions. [2021-06-11 20:37:58,683 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2021-06-11 20:37:58,683 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1645 transitions. [2021-06-11 20:37:58,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1645 transitions. [2021-06-11 20:37:58,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:37:58,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1645 transitions. [2021-06-11 20:37:58,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.064516129032256) internal successors, (1645), 31 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:58,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:58,691 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:37:58,691 INFO L185 Difference]: Start difference. First operand has 583 places, 1587 transitions, 31811 flow. Second operand 31 states and 1645 transitions. [2021-06-11 20:37:58,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 1621 transitions, 35509 flow [2021-06-11 20:37:59,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 1621 transitions, 34642 flow, removed 72 selfloop flow, removed 14 redundant places. [2021-06-11 20:37:59,769 INFO L241 Difference]: Finished difference. Result has 602 places, 1591 transitions, 32595 flow [2021-06-11 20:37:59,770 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=30944, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=776, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=808, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=32595, PETRI_PLACES=602, PETRI_TRANSITIONS=1591} [2021-06-11 20:37:59,770 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 549 predicate places. [2021-06-11 20:37:59,770 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:37:59,770 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 602 places, 1591 transitions, 32595 flow [2021-06-11 20:37:59,771 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 602 places, 1591 transitions, 32595 flow [2021-06-11 20:37:59,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 602 places, 1591 transitions, 32595 flow [2021-06-11 20:38:00,395 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][113], [Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 1778#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11)), 1027#true, Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1782#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 233#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 1751#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 1768#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= x_0 (+ x_6 1))), 6#L91true, Black: 203#(and (= y_1 y_7) (= x_6 x_0)), Black: 235#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1753#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 237#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1758#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 207#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 1774#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ 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(+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), 1940#true, 2197#true, Black: 125#(and (<= y_7 (+ temp_5 2)) (<= y_7 (+ y_1 1)) (<= (+ temp_5 2) y_7) (<= (+ x_0 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), 150#true, Black: 1665#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 1681#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1667#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1669#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4)), Black: 1658#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 1675#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1659#(and (<= x_0 temp_11) (<= 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temp_11) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 405#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 438#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 406#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 422#(and (<= x_0 x_6) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 407#(and (<= x_0 x_6) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0)), Black: 408#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 178#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 424#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 426#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 164#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 152#(and (= y_1 y_7) (= x_6 x_0)), Black: 411#(and (<= y_1 y_7) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 184#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 430#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 452#true, Black: 1986#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 156#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 172#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1974#(and (<= x_0 temp_11) (<= x_6 (+ temp_5 1)) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), Black: 158#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 1980#(and (<= x_0 x_6) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0) (<= (+ temp_5 1) x_6)), Black: 918#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 190#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 1966#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), 1992#true, Black: 174#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 201#true, Black: 2209#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2248#(and (< x_0 (+ x_6 1)) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0) (<= (+ temp_5 1) x_6)), Black: 2250#(and (= y_1 y_7) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), 1745#true, 735#true, Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:38:00,395 INFO L384 tUnfolder$Statistics]: this new event has 20 ancestors and is not cut-off event [2021-06-11 20:38:00,395 INFO L387 tUnfolder$Statistics]: existing Event has 20 ancestors and is not cut-off event [2021-06-11 20:38:00,395 INFO L387 tUnfolder$Statistics]: existing Event has 20 ancestors and is not cut-off event [2021-06-11 20:38:00,395 INFO L387 tUnfolder$Statistics]: existing Event has 20 ancestors and is not cut-off event [2021-06-11 20:38:00,545 INFO L129 PetriNetUnfolder]: 2151/4300 cut-off events. [2021-06-11 20:38:00,545 INFO L130 PetriNetUnfolder]: For 83695/83825 co-relation queries the response was YES. [2021-06-11 20:38:00,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37267 conditions, 4300 events. 2151/4300 cut-off events. For 83695/83825 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 33144 event pairs, 74 based on Foata normal form. 26/3734 useless extension candidates. Maximal degree in co-relation 37027. Up to 1459 conditions per place. [2021-06-11 20:38:00,660 INFO L151 LiptonReduction]: Number of co-enabled transitions 7598 [2021-06-11 20:38:01,028 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:38:01,028 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:38:01,028 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1258 [2021-06-11 20:38:01,028 INFO L480 AbstractCegarLoop]: Abstraction has has 602 places, 1591 transitions, 32595 flow [2021-06-11 20:38:01,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:01,029 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:38:01,029 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] [2021-06-11 20:38:01,029 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-11 20:38:01,029 INFO L428 AbstractCegarLoop]: === Iteration 43 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:38:01,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:38:01,029 INFO L82 PathProgramCache]: Analyzing trace with hash 914517591, now seen corresponding path program 1 times [2021-06-11 20:38:01,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:38:01,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667708384] [2021-06-11 20:38:01,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:38:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:38:01,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:01,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:38:01,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:01,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:38:01,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:01,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:01,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:01,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:01,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:01,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:01,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:01,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:01,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:01,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:38:01,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:01,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:01,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:01,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:01,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:01,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:01,165 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:38:01,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:38:01,186 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:38:01,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:38:01,213 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:38:01,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:01,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:38:01,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667708384] [2021-06-11 20:38:01,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:38:01,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:38:01,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381404717] [2021-06-11 20:38:01,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:38:01,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:38:01,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:38:01,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:38:01,220 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:38:01,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 1591 transitions, 32595 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:01,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:38:01,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:38:01,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:38:04,295 INFO L129 PetriNetUnfolder]: 3006/5663 cut-off events. [2021-06-11 20:38:04,295 INFO L130 PetriNetUnfolder]: For 190498/190508 co-relation queries the response was YES. [2021-06-11 20:38:04,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55280 conditions, 5663 events. 3006/5663 cut-off events. For 190498/190508 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 42243 event pairs, 247 based on Foata normal form. 11/5068 useless extension candidates. Maximal degree in co-relation 55035. Up to 2867 conditions per place. [2021-06-11 20:38:04,417 INFO L132 encePairwiseOnDemand]: 76/94 looper letters, 740 selfloop transitions, 1128 changer transitions 0/1886 dead transitions. [2021-06-11 20:38:04,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 1886 transitions, 42779 flow [2021-06-11 20:38:04,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-11 20:38:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-06-11 20:38:04,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1691 transitions. [2021-06-11 20:38:04,419 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5803019903912148 [2021-06-11 20:38:04,419 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1691 transitions. [2021-06-11 20:38:04,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1691 transitions. [2021-06-11 20:38:04,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:38:04,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1691 transitions. [2021-06-11 20:38:04,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 54.54838709677419) internal successors, (1691), 31 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:04,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:04,422 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:04,422 INFO L185 Difference]: Start difference. First operand has 602 places, 1591 transitions, 32595 flow. Second operand 31 states and 1691 transitions. [2021-06-11 20:38:04,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 1886 transitions, 42779 flow [2021-06-11 20:38:05,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 1886 transitions, 41206 flow, removed 28 selfloop flow, removed 24 redundant places. [2021-06-11 20:38:05,620 INFO L241 Difference]: Finished difference. Result has 618 places, 1824 transitions, 39317 flow [2021-06-11 20:38:05,621 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=31135, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=934, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=39317, PETRI_PLACES=618, PETRI_TRANSITIONS=1824} [2021-06-11 20:38:05,621 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 565 predicate places. [2021-06-11 20:38:05,621 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:38:05,621 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 618 places, 1824 transitions, 39317 flow [2021-06-11 20:38:05,622 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 618 places, 1824 transitions, 39317 flow [2021-06-11 20:38:05,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 618 places, 1824 transitions, 39317 flow [2021-06-11 20:38:06,159 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([182] L62-->thread5EXIT: Formula: (= (+ v_temp_10_23 1) v_y_7_24) InVars {temp_10=v_temp_10_23} OutVars{temp_10=v_temp_10_23, y_7=v_y_7_24} AuxVars[] AssignedVars[y_7][1024], [Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 1778#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11)), 1027#true, Black: 1782#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 217#(and (<= (+ y_7 1) temp_4) (<= (+ x_6 1) x_0) (<= temp_4 (+ y_7 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 233#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= 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temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:38:06,160 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:38:06,160 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:38:06,160 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:38:06,160 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:38:06,160 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([179] L73-->thread6EXIT: Formula: (= (+ v_temp_11_21 1) v_x_6_20) InVars {temp_11=v_temp_11_21} OutVars{temp_11=v_temp_11_21, 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[2021-06-11 20:38:06,160 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:38:06,160 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:38:06,160 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:38:06,160 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:38:06,160 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][669], [Black: 212#(and (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11)), Black: 1778#(and (<= (+ temp_11 1) x_0) (< y_1 (+ y_7 1)) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11)), 1027#true, Black: 1782#(and (<= (+ x_6 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(<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 333#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 367#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 875#(and (<= temp_5 x_6) (= y_1 y_7) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_7 temp_4) (= x_6 x_0)), Black: 129#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ y_1 1)) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), 398#true, Black: 114#(and (<= y_7 (+ temp_5 2)) (<= (+ temp_5 2) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 1384#(and (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11)), Black: 115#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ y_1 1)) (<= (+ temp_5 1) x_6) (<= (+ y_1 1) y_7)), Black: 121#(and (<= temp_10 (+ y_1 1)) (<= y_7 (+ y_1 2)) (<= (+ y_1 2) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= (+ y_1 1) temp_10)), Black: 2162#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 106#(and (= y_1 y_7) (= x_6 x_0)), Black: 2163#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 139#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 2187#(and (<= x_0 x_6) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0) (<= (+ temp_5 1) x_6)), Black: 109#(and (<= y_7 (+ y_1 1)) (<= (+ x_0 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), 1940#true, Black: 125#(and (<= y_7 (+ temp_5 2)) (<= y_7 (+ y_1 1)) (<= (+ temp_5 2) y_7) (<= (+ x_0 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), 150#true, Black: 1665#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 1681#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= temp_11 temp_5) (<= y_1 (+ y_7 1)) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1667#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 1669#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= y_7 temp_4)), Black: 1658#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 y_1) (<= y_1 y_7)), Black: 1675#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1659#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4)), Black: 1660#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 1677#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= y_1 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 674#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 628#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 662#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 670#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 400#(and (= y_1 y_7) (= x_6 x_0)), Black: 434#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 405#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 438#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 406#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 422#(and (<= x_0 x_6) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 407#(and (<= x_0 x_6) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0)), Black: 408#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 178#(and (<= temp_5 x_6) (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 424#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 426#(and (<= x_0 temp_11) (<= x_0 x_6) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 164#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 411#(and (<= y_1 y_7) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 152#(and (= y_1 y_7) (= x_6 x_0)), Black: 184#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 430#(and (<= x_0 temp_11) (= y_1 y_7) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 452#true, Black: 1986#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 156#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 172#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1974#(and (<= x_0 temp_11) (<= x_6 (+ temp_5 1)) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), Black: 1980#(and (<= x_0 x_6) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0) (<= (+ temp_5 1) x_6)), Black: 918#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 158#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 190#(and (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= (+ temp_10 1) y_1) (<= x_0 (+ temp_11 1)) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 1966#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 174#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), 1992#true, 201#true, Black: 2209#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2248#(and (< x_0 (+ x_6 1)) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0) (<= (+ temp_5 1) x_6)), Black: 2250#(and (= y_1 y_7) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), 2255#true, 1745#true, 735#true, Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:38:06,160 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:38:06,160 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:38:06,160 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:38:06,160 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:38:06,588 INFO L129 PetriNetUnfolder]: 2514/4920 cut-off events. [2021-06-11 20:38:06,588 INFO L130 PetriNetUnfolder]: For 128592/128690 co-relation queries the response was YES. [2021-06-11 20:38:06,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45596 conditions, 4920 events. 2514/4920 cut-off events. For 128592/128690 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 38182 event pairs, 78 based on Foata normal form. 16/4225 useless extension candidates. Maximal degree in co-relation 45344. Up to 1734 conditions per place. [2021-06-11 20:38:06,714 INFO L151 LiptonReduction]: Number of co-enabled transitions 9046 [2021-06-11 20:38:07,188 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:38:07,188 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:38:07,188 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1567 [2021-06-11 20:38:07,188 INFO L480 AbstractCegarLoop]: Abstraction has has 618 places, 1824 transitions, 39317 flow [2021-06-11 20:38:07,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:07,189 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:38:07,189 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] [2021-06-11 20:38:07,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-11 20:38:07,189 INFO L428 AbstractCegarLoop]: === Iteration 44 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:38:07,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:38:07,189 INFO L82 PathProgramCache]: Analyzing trace with hash -2112574145, now seen corresponding path program 2 times [2021-06-11 20:38:07,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:38:07,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590453269] [2021-06-11 20:38:07,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:38:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:38:07,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:07,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:38:07,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:07,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:38:07,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:07,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:07,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:07,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:07,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:07,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:07,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:07,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:07,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:07,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:38:07,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:07,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:07,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:07,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:07,321 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:38:07,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:38:07,324 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:38:07,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:38:07,347 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:38:07,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:38:07,368 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:38:07,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:38:07,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590453269] [2021-06-11 20:38:07,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:38:07,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:38:07,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463674668] [2021-06-11 20:38:07,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:38:07,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:38:07,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:38:07,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:38:07,372 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:38:07,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 1824 transitions, 39317 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:07,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:38:07,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:38:07,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:38:10,137 INFO L129 PetriNetUnfolder]: 3126/5867 cut-off events. [2021-06-11 20:38:10,138 INFO L130 PetriNetUnfolder]: For 217053/217057 co-relation queries the response was YES. [2021-06-11 20:38:10,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60669 conditions, 5867 events. 3126/5867 cut-off events. For 217053/217057 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 43997 event pairs, 258 based on Foata normal form. 5/5255 useless extension candidates. Maximal degree in co-relation 60400. Up to 3268 conditions per place. [2021-06-11 20:38:10,259 INFO L132 encePairwiseOnDemand]: 75/94 looper letters, 1041 selfloop transitions, 914 changer transitions 0/1973 dead transitions. [2021-06-11 20:38:10,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 1973 transitions, 47346 flow [2021-06-11 20:38:10,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-11 20:38:10,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-06-11 20:38:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1092 transitions. [2021-06-11 20:38:10,260 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5808510638297872 [2021-06-11 20:38:10,260 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1092 transitions. [2021-06-11 20:38:10,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1092 transitions. [2021-06-11 20:38:10,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:38:10,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1092 transitions. [2021-06-11 20:38:10,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 54.6) internal successors, (1092), 20 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:10,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 94.0) internal successors, (1974), 21 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:10,263 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 94.0) internal successors, (1974), 21 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:10,263 INFO L185 Difference]: Start difference. First operand has 618 places, 1824 transitions, 39317 flow. Second operand 20 states and 1092 transitions. [2021-06-11 20:38:10,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 1973 transitions, 47346 flow [2021-06-11 20:38:12,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 1973 transitions, 45664 flow, removed 809 selfloop flow, removed 3 redundant places. [2021-06-11 20:38:12,229 INFO L241 Difference]: Finished difference. Result has 639 places, 1931 transitions, 43118 flow [2021-06-11 20:38:12,230 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=37843, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=807, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=996, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=43118, PETRI_PLACES=639, PETRI_TRANSITIONS=1931} [2021-06-11 20:38:12,231 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 586 predicate places. [2021-06-11 20:38:12,231 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:38:12,231 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 639 places, 1931 transitions, 43118 flow [2021-06-11 20:38:12,231 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 639 places, 1931 transitions, 43118 flow [2021-06-11 20:38:12,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 639 places, 1931 transitions, 43118 flow [2021-06-11 20:38:13,252 INFO L129 PetriNetUnfolder]: 2633/5152 cut-off events. [2021-06-11 20:38:13,253 INFO L130 PetriNetUnfolder]: For 127235/127390 co-relation queries the response was YES. [2021-06-11 20:38:13,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48623 conditions, 5152 events. 2633/5152 cut-off events. For 127235/127390 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 40487 event pairs, 62 based on Foata normal form. 23/4463 useless extension candidates. Maximal degree in co-relation 48374. Up to 1798 conditions per place. [2021-06-11 20:38:13,384 INFO L151 LiptonReduction]: Number of co-enabled transitions 9574 [2021-06-11 20:38:13,930 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:38:13,930 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:38:13,930 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1699 [2021-06-11 20:38:13,931 INFO L480 AbstractCegarLoop]: Abstraction has has 639 places, 1931 transitions, 43118 flow [2021-06-11 20:38:13,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:13,931 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:38:13,931 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] [2021-06-11 20:38:13,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-11 20:38:13,931 INFO L428 AbstractCegarLoop]: === Iteration 45 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:38:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:38:13,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1349617025, now seen corresponding path program 2 times [2021-06-11 20:38:13,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:38:13,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437607735] [2021-06-11 20:38:13,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:38:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:38:13,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:13,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:38:13,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:13,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:38:13,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:13,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:13,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:13,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:13,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:13,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:13,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:14,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:14,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:14,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:38:14,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:14,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:38:14,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:14,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:38:14,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:14,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:14,086 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:38:14,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:38:14,107 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:38:14,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:38:14,130 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:38:14,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:38:14,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437607735] [2021-06-11 20:38:14,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:38:14,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:38:14,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575874295] [2021-06-11 20:38:14,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:38:14,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:38:14,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:38:14,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:38:14,135 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:38:14,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 1931 transitions, 43118 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:14,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:38:14,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:38:14,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:38:17,635 INFO L129 PetriNetUnfolder]: 3203/6068 cut-off events. [2021-06-11 20:38:17,635 INFO L130 PetriNetUnfolder]: For 195308/195318 co-relation queries the response was YES. [2021-06-11 20:38:17,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61251 conditions, 6068 events. 3203/6068 cut-off events. For 195308/195318 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 46314 event pairs, 298 based on Foata normal form. 11/5412 useless extension candidates. Maximal degree in co-relation 61002. Up to 3346 conditions per place. [2021-06-11 20:38:17,768 INFO L132 encePairwiseOnDemand]: 76/94 looper letters, 925 selfloop transitions, 1070 changer transitions 2/2015 dead transitions. [2021-06-11 20:38:17,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 2015 transitions, 48700 flow [2021-06-11 20:38:17,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-11 20:38:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-06-11 20:38:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1650 transitions. [2021-06-11 20:38:17,770 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5662319835277968 [2021-06-11 20:38:17,770 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1650 transitions. [2021-06-11 20:38:17,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1650 transitions. [2021-06-11 20:38:17,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:38:17,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1650 transitions. [2021-06-11 20:38:17,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.225806451612904) internal successors, (1650), 31 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:17,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:17,774 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:17,774 INFO L185 Difference]: Start difference. First operand has 639 places, 1931 transitions, 43118 flow. Second operand 31 states and 1650 transitions. [2021-06-11 20:38:17,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 669 places, 2015 transitions, 48700 flow [2021-06-11 20:38:19,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 2015 transitions, 47479 flow, removed 25 selfloop flow, removed 13 redundant places. [2021-06-11 20:38:19,404 INFO L241 Difference]: Finished difference. Result has 663 places, 1972 transitions, 45189 flow [2021-06-11 20:38:19,406 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=41897, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1931, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1032, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=887, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=45189, PETRI_PLACES=663, PETRI_TRANSITIONS=1972} [2021-06-11 20:38:19,406 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 610 predicate places. [2021-06-11 20:38:19,406 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:38:19,406 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 663 places, 1972 transitions, 45189 flow [2021-06-11 20:38:19,407 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 663 places, 1972 transitions, 45189 flow [2021-06-11 20:38:19,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 662 places, 1972 transitions, 45189 flow [2021-06-11 20:38:20,698 INFO L129 PetriNetUnfolder]: 2657/5257 cut-off events. [2021-06-11 20:38:20,698 INFO L130 PetriNetUnfolder]: For 129284/129532 co-relation queries the response was YES. [2021-06-11 20:38:20,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49638 conditions, 5257 events. 2657/5257 cut-off events. For 129284/129532 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 41657 event pairs, 89 based on Foata normal form. 24/4545 useless extension candidates. Maximal degree in co-relation 49382. Up to 1807 conditions per place. [2021-06-11 20:38:20,840 INFO L151 LiptonReduction]: Number of co-enabled transitions 9918 [2021-06-11 20:38:21,422 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:38:21,422 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:38:21,423 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2017 [2021-06-11 20:38:21,423 INFO L480 AbstractCegarLoop]: Abstraction has has 662 places, 1972 transitions, 45189 flow [2021-06-11 20:38:21,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:21,423 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:38:21,423 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] [2021-06-11 20:38:21,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-11 20:38:21,424 INFO L428 AbstractCegarLoop]: === Iteration 46 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:38:21,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:38:21,424 INFO L82 PathProgramCache]: Analyzing trace with hash -636956567, now seen corresponding path program 3 times [2021-06-11 20:38:21,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:38:21,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571639957] [2021-06-11 20:38:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:38:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:38:21,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:21,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:38:21,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:21,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:38:21,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:21,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:21,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:21,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:21,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:21,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:21,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:21,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:21,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:21,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:38:21,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:21,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:38:21,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:21,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:21,550 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:38:21,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:38:21,553 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:38:21,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:38:21,574 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:38:21,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:38:21,597 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:38:21,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:21,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:38:21,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571639957] [2021-06-11 20:38:21,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:38:21,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:38:21,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108988229] [2021-06-11 20:38:21,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:38:21,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:38:21,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:38:21,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:38:21,602 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:38:21,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 1972 transitions, 45189 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:21,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:38:21,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:38:21,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:38:24,682 INFO L129 PetriNetUnfolder]: 3203/6055 cut-off events. [2021-06-11 20:38:24,682 INFO L130 PetriNetUnfolder]: For 203002/203004 co-relation queries the response was YES. [2021-06-11 20:38:24,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62218 conditions, 6055 events. 3203/6055 cut-off events. For 203002/203004 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 46136 event pairs, 299 based on Foata normal form. 3/5402 useless extension candidates. Maximal degree in co-relation 61950. Up to 3614 conditions per place. [2021-06-11 20:38:24,837 INFO L132 encePairwiseOnDemand]: 75/94 looper letters, 1204 selfloop transitions, 793 changer transitions 0/2015 dead transitions. [2021-06-11 20:38:24,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 2015 transitions, 49858 flow [2021-06-11 20:38:24,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-11 20:38:24,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-06-11 20:38:24,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1133 transitions. [2021-06-11 20:38:24,839 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5739614994934144 [2021-06-11 20:38:24,839 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1133 transitions. [2021-06-11 20:38:24,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1133 transitions. [2021-06-11 20:38:24,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:38:24,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1133 transitions. [2021-06-11 20:38:24,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 53.95238095238095) internal successors, (1133), 21 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:24,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 94.0) internal successors, (2068), 22 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:24,840 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 94.0) internal successors, (2068), 22 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:24,840 INFO L185 Difference]: Start difference. First operand has 662 places, 1972 transitions, 45189 flow. Second operand 21 states and 1133 transitions. [2021-06-11 20:38:24,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 2015 transitions, 49858 flow [2021-06-11 20:38:26,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 671 places, 2015 transitions, 49239 flow, removed 97 selfloop flow, removed 11 redundant places. [2021-06-11 20:38:26,523 INFO L241 Difference]: Finished difference. Result has 674 places, 1989 transitions, 46518 flow [2021-06-11 20:38:26,524 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=44575, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1972, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=776, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=46518, PETRI_PLACES=674, PETRI_TRANSITIONS=1989} [2021-06-11 20:38:26,524 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 621 predicate places. [2021-06-11 20:38:26,524 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:38:26,524 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 674 places, 1989 transitions, 46518 flow [2021-06-11 20:38:26,524 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 674 places, 1989 transitions, 46518 flow [2021-06-11 20:38:26,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 674 places, 1989 transitions, 46518 flow [2021-06-11 20:38:27,669 INFO L129 PetriNetUnfolder]: 2704/5336 cut-off events. [2021-06-11 20:38:27,669 INFO L130 PetriNetUnfolder]: For 136626/136748 co-relation queries the response was YES. [2021-06-11 20:38:27,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51287 conditions, 5336 events. 2704/5336 cut-off events. For 136626/136748 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 42714 event pairs, 86 based on Foata normal form. 20/4586 useless extension candidates. Maximal degree in co-relation 51021. Up to 1861 conditions per place. [2021-06-11 20:38:27,828 INFO L151 LiptonReduction]: Number of co-enabled transitions 10084 [2021-06-11 20:38:28,385 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:38:28,386 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:38:28,386 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1862 [2021-06-11 20:38:28,386 INFO L480 AbstractCegarLoop]: Abstraction has has 674 places, 1989 transitions, 46518 flow [2021-06-11 20:38:28,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:28,386 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:38:28,386 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] [2021-06-11 20:38:28,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-11 20:38:28,386 INFO L428 AbstractCegarLoop]: === Iteration 47 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:38:28,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:38:28,387 INFO L82 PathProgramCache]: Analyzing trace with hash 382842806, now seen corresponding path program 3 times [2021-06-11 20:38:28,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:38:28,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655058313] [2021-06-11 20:38:28,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:38:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:38:28,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:28,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:38:28,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:28,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:38:28,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:28,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:28,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:28,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:28,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:28,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:28,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:28,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:28,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:28,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:38:28,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:28,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:28,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:28,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:28,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:28,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:28,547 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:38:28,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:38:28,568 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:38:28,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:38:28,591 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:38:28,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:38:28,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655058313] [2021-06-11 20:38:28,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:38:28,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:38:28,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158612779] [2021-06-11 20:38:28,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:38:28,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:38:28,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:38:28,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:38:28,596 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:38:28,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 1989 transitions, 46518 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:28,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:38:28,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:38:28,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:38:32,321 INFO L129 PetriNetUnfolder]: 3321/6307 cut-off events. [2021-06-11 20:38:32,321 INFO L130 PetriNetUnfolder]: For 215362/215364 co-relation queries the response was YES. [2021-06-11 20:38:32,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65242 conditions, 6307 events. 3321/6307 cut-off events. For 215362/215364 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 48605 event pairs, 281 based on Foata normal form. 4/5621 useless extension candidates. Maximal degree in co-relation 64976. Up to 3368 conditions per place. [2021-06-11 20:38:32,460 INFO L132 encePairwiseOnDemand]: 75/94 looper letters, 946 selfloop transitions, 1134 changer transitions 0/2098 dead transitions. [2021-06-11 20:38:32,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 2098 transitions, 53104 flow [2021-06-11 20:38:32,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-11 20:38:32,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-06-11 20:38:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1456 transitions. [2021-06-11 20:38:32,462 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5736800630417652 [2021-06-11 20:38:32,462 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1456 transitions. [2021-06-11 20:38:32,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1456 transitions. [2021-06-11 20:38:32,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:38:32,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1456 transitions. [2021-06-11 20:38:32,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 53.925925925925924) internal successors, (1456), 27 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:32,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 94.0) internal successors, (2632), 28 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:32,464 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 94.0) internal successors, (2632), 28 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:32,464 INFO L185 Difference]: Start difference. First operand has 674 places, 1989 transitions, 46518 flow. Second operand 27 states and 1456 transitions. [2021-06-11 20:38:32,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 700 places, 2098 transitions, 53104 flow [2021-06-11 20:38:34,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 2098 transitions, 52033 flow, removed 38 selfloop flow, removed 13 redundant places. [2021-06-11 20:38:34,342 INFO L241 Difference]: Finished difference. Result has 696 places, 2050 transitions, 50017 flow [2021-06-11 20:38:34,344 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=45447, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1989, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1079, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=870, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=50017, PETRI_PLACES=696, PETRI_TRANSITIONS=2050} [2021-06-11 20:38:34,344 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 643 predicate places. [2021-06-11 20:38:34,344 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:38:34,344 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 696 places, 2050 transitions, 50017 flow [2021-06-11 20:38:34,344 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 696 places, 2050 transitions, 50017 flow [2021-06-11 20:38:34,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 696 places, 2050 transitions, 50017 flow [2021-06-11 20:38:35,621 INFO L129 PetriNetUnfolder]: 2753/5475 cut-off events. [2021-06-11 20:38:35,621 INFO L130 PetriNetUnfolder]: For 148445/148550 co-relation queries the response was YES. [2021-06-11 20:38:35,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54133 conditions, 5475 events. 2753/5475 cut-off events. For 148445/148550 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 44324 event pairs, 91 based on Foata normal form. 18/4721 useless extension candidates. Maximal degree in co-relation 53870. Up to 1909 conditions per place. [2021-06-11 20:38:35,804 INFO L151 LiptonReduction]: Number of co-enabled transitions 10574 [2021-06-11 20:38:36,404 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:38:36,404 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:38:36,404 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2060 [2021-06-11 20:38:36,404 INFO L480 AbstractCegarLoop]: Abstraction has has 696 places, 2050 transitions, 50017 flow [2021-06-11 20:38:36,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:36,405 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:38:36,405 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] [2021-06-11 20:38:36,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-11 20:38:36,405 INFO L428 AbstractCegarLoop]: === Iteration 48 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:38:36,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:38:36,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1880077980, now seen corresponding path program 4 times [2021-06-11 20:38:36,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:38:36,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684917975] [2021-06-11 20:38:36,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:38:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:38:36,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:36,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:38:36,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:36,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:38:36,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:36,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:36,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:36,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:36,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:36,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:36,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:36,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:36,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:36,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:38:36,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:36,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:38:36,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:36,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:36,522 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:38:36,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:38:36,524 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:38:36,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:38:36,546 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:38:36,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:38:36,566 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:38:36,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:38:36,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684917975] [2021-06-11 20:38:36,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:38:36,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:38:36,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521162944] [2021-06-11 20:38:36,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:38:36,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:38:36,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:38:36,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:38:36,570 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:38:36,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 2050 transitions, 50017 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:36,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:38:36,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:38:36,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:38:40,193 INFO L129 PetriNetUnfolder]: 3309/6294 cut-off events. [2021-06-11 20:38:40,194 INFO L130 PetriNetUnfolder]: For 225279/225281 co-relation queries the response was YES. [2021-06-11 20:38:40,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67149 conditions, 6294 events. 3309/6294 cut-off events. For 225279/225281 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 48625 event pairs, 310 based on Foata normal form. 3/5618 useless extension candidates. Maximal degree in co-relation 66881. Up to 3622 conditions per place. [2021-06-11 20:38:40,345 INFO L132 encePairwiseOnDemand]: 75/94 looper letters, 1077 selfloop transitions, 982 changer transitions 0/2077 dead transitions. [2021-06-11 20:38:40,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 721 places, 2077 transitions, 54476 flow [2021-06-11 20:38:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-11 20:38:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-06-11 20:38:40,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1400 transitions. [2021-06-11 20:38:40,347 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5728314238952537 [2021-06-11 20:38:40,347 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1400 transitions. [2021-06-11 20:38:40,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1400 transitions. [2021-06-11 20:38:40,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:38:40,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1400 transitions. [2021-06-11 20:38:40,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 53.84615384615385) internal successors, (1400), 26 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:40,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 94.0) internal successors, (2538), 27 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:40,350 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 94.0) internal successors, (2538), 27 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:40,350 INFO L185 Difference]: Start difference. First operand has 696 places, 2050 transitions, 50017 flow. Second operand 26 states and 1400 transitions. [2021-06-11 20:38:40,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 721 places, 2077 transitions, 54476 flow [2021-06-11 20:38:42,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 710 places, 2077 transitions, 54070 flow, removed 63 selfloop flow, removed 11 redundant places. [2021-06-11 20:38:42,333 INFO L241 Difference]: Finished difference. Result has 713 places, 2053 transitions, 51693 flow [2021-06-11 20:38:42,334 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=49613, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2050, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=979, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1068, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=51693, PETRI_PLACES=713, PETRI_TRANSITIONS=2053} [2021-06-11 20:38:42,335 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 660 predicate places. [2021-06-11 20:38:42,335 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:38:42,335 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 713 places, 2053 transitions, 51693 flow [2021-06-11 20:38:42,335 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 713 places, 2053 transitions, 51693 flow [2021-06-11 20:38:42,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 713 places, 2053 transitions, 51693 flow [2021-06-11 20:38:43,691 INFO L129 PetriNetUnfolder]: 2782/5561 cut-off events. [2021-06-11 20:38:43,692 INFO L130 PetriNetUnfolder]: For 150742/150903 co-relation queries the response was YES. [2021-06-11 20:38:43,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55463 conditions, 5561 events. 2782/5561 cut-off events. For 150742/150903 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 45169 event pairs, 87 based on Foata normal form. 21/4788 useless extension candidates. Maximal degree in co-relation 55192. Up to 1908 conditions per place. [2021-06-11 20:38:43,867 INFO L151 LiptonReduction]: Number of co-enabled transitions 10616 [2021-06-11 20:38:44,488 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:38:44,488 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:38:44,488 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2153 [2021-06-11 20:38:44,488 INFO L480 AbstractCegarLoop]: Abstraction has has 713 places, 2053 transitions, 51693 flow [2021-06-11 20:38:44,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:44,489 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:38:44,489 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] [2021-06-11 20:38:44,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-11 20:38:44,489 INFO L428 AbstractCegarLoop]: === Iteration 49 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:38:44,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:38:44,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1224138880, now seen corresponding path program 5 times [2021-06-11 20:38:44,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:38:44,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653188441] [2021-06-11 20:38:44,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:38:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:38:44,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:44,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:38:44,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:44,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:38:44,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:44,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:44,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:44,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:44,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:44,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:44,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:44,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:44,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:44,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:38:44,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:44,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:38:44,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:44,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:44,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:44,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:44,613 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:38:44,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:38:44,629 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:38:44,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:38:44,646 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:38:44,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:38:44,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653188441] [2021-06-11 20:38:44,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:38:44,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:38:44,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263100458] [2021-06-11 20:38:44,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:38:44,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:38:44,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:38:44,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:38:44,650 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:38:44,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 713 places, 2053 transitions, 51693 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:44,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:38:44,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:38:44,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:38:49,100 INFO L129 PetriNetUnfolder]: 3333/6370 cut-off events. [2021-06-11 20:38:49,100 INFO L130 PetriNetUnfolder]: For 228602/228607 co-relation queries the response was YES. [2021-06-11 20:38:49,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68478 conditions, 6370 events. 3333/6370 cut-off events. For 228602/228607 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 49588 event pairs, 313 based on Foata normal form. 5/5673 useless extension candidates. Maximal degree in co-relation 68202. Up to 3552 conditions per place. [2021-06-11 20:38:49,273 INFO L132 encePairwiseOnDemand]: 75/94 looper letters, 1030 selfloop transitions, 1044 changer transitions 0/2092 dead transitions. [2021-06-11 20:38:49,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 743 places, 2092 transitions, 56388 flow [2021-06-11 20:38:49,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-11 20:38:49,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-06-11 20:38:49,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1653 transitions. [2021-06-11 20:38:49,275 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5672614962251201 [2021-06-11 20:38:49,275 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1653 transitions. [2021-06-11 20:38:49,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1653 transitions. [2021-06-11 20:38:49,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:38:49,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1653 transitions. [2021-06-11 20:38:49,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.32258064516129) internal successors, (1653), 31 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:49,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:49,278 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:49,278 INFO L185 Difference]: Start difference. First operand has 713 places, 2053 transitions, 51693 flow. Second operand 31 states and 1653 transitions. [2021-06-11 20:38:49,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 743 places, 2092 transitions, 56388 flow [2021-06-11 20:38:51,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 722 places, 2092 transitions, 54429 flow, removed 5 selfloop flow, removed 21 redundant places. [2021-06-11 20:38:51,190 INFO L241 Difference]: Finished difference. Result has 725 places, 2061 transitions, 51974 flow [2021-06-11 20:38:51,192 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=49742, PETRI_DIFFERENCE_MINUEND_PLACES=692, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2053, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1013, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=51974, PETRI_PLACES=725, PETRI_TRANSITIONS=2061} [2021-06-11 20:38:51,192 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 672 predicate places. [2021-06-11 20:38:51,192 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:38:51,193 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 725 places, 2061 transitions, 51974 flow [2021-06-11 20:38:51,193 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 725 places, 2061 transitions, 51974 flow [2021-06-11 20:38:51,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 725 places, 2061 transitions, 51974 flow [2021-06-11 20:38:52,762 INFO L129 PetriNetUnfolder]: 2818/5638 cut-off events. [2021-06-11 20:38:52,762 INFO L130 PetriNetUnfolder]: For 149822/149950 co-relation queries the response was YES. [2021-06-11 20:38:52,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55808 conditions, 5638 events. 2818/5638 cut-off events. For 149822/149950 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 45979 event pairs, 95 based on Foata normal form. 18/4832 useless extension candidates. Maximal degree in co-relation 55547. Up to 1914 conditions per place. [2021-06-11 20:38:52,904 INFO L151 LiptonReduction]: Number of co-enabled transitions 10712 [2021-06-11 20:38:53,470 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:38:53,470 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:38:53,470 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2278 [2021-06-11 20:38:53,470 INFO L480 AbstractCegarLoop]: Abstraction has has 725 places, 2061 transitions, 51974 flow [2021-06-11 20:38:53,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:53,471 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:38:53,471 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] [2021-06-11 20:38:53,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-11 20:38:53,471 INFO L428 AbstractCegarLoop]: === Iteration 50 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:38:53,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:38:53,471 INFO L82 PathProgramCache]: Analyzing trace with hash 853340190, now seen corresponding path program 6 times [2021-06-11 20:38:53,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:38:53,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774150803] [2021-06-11 20:38:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:38:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:38:53,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:53,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:38:53,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:53,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:38:53,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:53,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:53,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:53,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:53,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:53,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:53,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:53,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:53,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:53,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:38:53,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:53,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:38:53,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:53,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:38:53,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:53,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:53,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:38:53,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:38:53,634 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:38:53,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:38:53,655 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:38:53,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:38:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:38:53,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774150803] [2021-06-11 20:38:53,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:38:53,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:38:53,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329848644] [2021-06-11 20:38:53,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:38:53,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:38:53,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:38:53,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:38:53,660 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:38:53,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 725 places, 2061 transitions, 51974 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:53,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:38:53,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:38:53,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:38:57,457 INFO L129 PetriNetUnfolder]: 3319/6342 cut-off events. [2021-06-11 20:38:57,457 INFO L130 PetriNetUnfolder]: For 227915/227917 co-relation queries the response was YES. [2021-06-11 20:38:57,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68496 conditions, 6342 events. 3319/6342 cut-off events. For 227915/227917 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 49356 event pairs, 322 based on Foata normal form. 3/5656 useless extension candidates. Maximal degree in co-relation 68229. Up to 3625 conditions per place. [2021-06-11 20:38:57,600 INFO L132 encePairwiseOnDemand]: 75/94 looper letters, 1162 selfloop transitions, 911 changer transitions 0/2091 dead transitions. [2021-06-11 20:38:57,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 2091 transitions, 56424 flow [2021-06-11 20:38:57,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-11 20:38:57,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-06-11 20:38:57,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1534 transitions. [2021-06-11 20:38:57,602 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5627292736610419 [2021-06-11 20:38:57,602 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1534 transitions. [2021-06-11 20:38:57,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1534 transitions. [2021-06-11 20:38:57,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:38:57,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1534 transitions. [2021-06-11 20:38:57,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 52.89655172413793) internal successors, (1534), 29 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:57,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:57,605 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:38:57,605 INFO L185 Difference]: Start difference. First operand has 725 places, 2061 transitions, 51974 flow. Second operand 29 states and 1534 transitions. [2021-06-11 20:38:57,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 2091 transitions, 56424 flow [2021-06-11 20:38:59,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 729 places, 2091 transitions, 54238 flow, removed 43 selfloop flow, removed 24 redundant places. [2021-06-11 20:38:59,612 INFO L241 Difference]: Finished difference. Result has 731 places, 2062 transitions, 51632 flow [2021-06-11 20:38:59,614 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=49792, PETRI_DIFFERENCE_MINUEND_PLACES=701, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2061, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=910, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=51632, PETRI_PLACES=731, PETRI_TRANSITIONS=2062} [2021-06-11 20:38:59,614 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 678 predicate places. [2021-06-11 20:38:59,614 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:38:59,614 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 731 places, 2062 transitions, 51632 flow [2021-06-11 20:38:59,614 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 731 places, 2062 transitions, 51632 flow [2021-06-11 20:38:59,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 731 places, 2062 transitions, 51632 flow [2021-06-11 20:39:00,882 INFO L129 PetriNetUnfolder]: 2791/5603 cut-off events. [2021-06-11 20:39:00,882 INFO L130 PetriNetUnfolder]: For 149860/149982 co-relation queries the response was YES. [2021-06-11 20:39:00,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55451 conditions, 5603 events. 2791/5603 cut-off events. For 149860/149982 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 45916 event pairs, 99 based on Foata normal form. 12/4806 useless extension candidates. Maximal degree in co-relation 55188. Up to 1909 conditions per place. [2021-06-11 20:39:01,054 INFO L151 LiptonReduction]: Number of co-enabled transitions 10722 [2021-06-11 20:39:01,672 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:39:01,672 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:39:01,672 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2058 [2021-06-11 20:39:01,672 INFO L480 AbstractCegarLoop]: Abstraction has has 731 places, 2062 transitions, 51632 flow [2021-06-11 20:39:01,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:01,673 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:39:01,673 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] [2021-06-11 20:39:01,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-11 20:39:01,673 INFO L428 AbstractCegarLoop]: === Iteration 51 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:39:01,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:39:01,673 INFO L82 PathProgramCache]: Analyzing trace with hash -424845070, now seen corresponding path program 7 times [2021-06-11 20:39:01,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:39:01,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575099527] [2021-06-11 20:39:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:39:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:39:01,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:01,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:39:01,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:01,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:39:01,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:01,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:01,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:01,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:01,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:01,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:01,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:01,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:01,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:01,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:39:01,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:01,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:39:01,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:01,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:01,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:01,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:01,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:01,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:01,813 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:39:01,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:39:01,831 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:39:01,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:39:01,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575099527] [2021-06-11 20:39:01,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:39:01,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:39:01,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393265996] [2021-06-11 20:39:01,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:39:01,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:39:01,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:39:01,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:39:01,850 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:39:01,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 2062 transitions, 51632 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:01,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:39:01,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:39:01,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:39:05,621 INFO L129 PetriNetUnfolder]: 3332/6378 cut-off events. [2021-06-11 20:39:05,621 INFO L130 PetriNetUnfolder]: For 226139/226141 co-relation queries the response was YES. [2021-06-11 20:39:05,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68344 conditions, 6378 events. 3332/6378 cut-off events. For 226139/226141 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 49726 event pairs, 312 based on Foata normal form. 3/5678 useless extension candidates. Maximal degree in co-relation 68075. Up to 3677 conditions per place. [2021-06-11 20:39:05,763 INFO L132 encePairwiseOnDemand]: 75/94 looper letters, 1201 selfloop transitions, 866 changer transitions 0/2085 dead transitions. [2021-06-11 20:39:05,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 756 places, 2085 transitions, 56025 flow [2021-06-11 20:39:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-11 20:39:05,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-06-11 20:39:05,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1386 transitions. [2021-06-11 20:39:05,766 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5671031096563012 [2021-06-11 20:39:05,766 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1386 transitions. [2021-06-11 20:39:05,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1386 transitions. [2021-06-11 20:39:05,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:39:05,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1386 transitions. [2021-06-11 20:39:05,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 53.30769230769231) internal successors, (1386), 26 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:05,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 94.0) internal successors, (2538), 27 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:05,768 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 94.0) internal successors, (2538), 27 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:05,768 INFO L185 Difference]: Start difference. First operand has 731 places, 2062 transitions, 51632 flow. Second operand 26 states and 1386 transitions. [2021-06-11 20:39:05,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 756 places, 2085 transitions, 56025 flow [2021-06-11 20:39:07,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 727 places, 2085 transitions, 53285 flow, removed 11 selfloop flow, removed 29 redundant places. [2021-06-11 20:39:08,039 INFO L241 Difference]: Finished difference. Result has 729 places, 2063 transitions, 50647 flow [2021-06-11 20:39:08,041 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=48892, PETRI_DIFFERENCE_MINUEND_PLACES=702, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=865, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=50647, PETRI_PLACES=729, PETRI_TRANSITIONS=2063} [2021-06-11 20:39:08,041 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 676 predicate places. [2021-06-11 20:39:08,041 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:39:08,041 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 729 places, 2063 transitions, 50647 flow [2021-06-11 20:39:08,042 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 729 places, 2063 transitions, 50647 flow [2021-06-11 20:39:08,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 729 places, 2063 transitions, 50647 flow [2021-06-11 20:39:09,344 INFO L129 PetriNetUnfolder]: 2785/5573 cut-off events. [2021-06-11 20:39:09,344 INFO L130 PetriNetUnfolder]: For 148790/148956 co-relation queries the response was YES. [2021-06-11 20:39:09,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54306 conditions, 5573 events. 2785/5573 cut-off events. For 148790/148956 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 45568 event pairs, 95 based on Foata normal form. 15/4781 useless extension candidates. Maximal degree in co-relation 54046. Up to 1912 conditions per place. [2021-06-11 20:39:09,506 INFO L151 LiptonReduction]: Number of co-enabled transitions 10732 [2021-06-11 20:39:10,135 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:39:10,137 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:39:10,137 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2096 [2021-06-11 20:39:10,137 INFO L480 AbstractCegarLoop]: Abstraction has has 729 places, 2063 transitions, 50647 flow [2021-06-11 20:39:10,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:10,137 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:39:10,137 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] [2021-06-11 20:39:10,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-11 20:39:10,138 INFO L428 AbstractCegarLoop]: === Iteration 52 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:39:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:39:10,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1589152749, now seen corresponding path program 4 times [2021-06-11 20:39:10,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:39:10,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628690460] [2021-06-11 20:39:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:39:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:39:10,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:10,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:39:10,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:10,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:39:10,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:10,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:10,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:10,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:10,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:10,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:10,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:10,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:10,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:10,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:10,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:10,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:10,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:10,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:10,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:10,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:10,244 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:39:10,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:39:10,259 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:39:10,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:39:10,275 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:39:10,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:39:10,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628690460] [2021-06-11 20:39:10,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:39:10,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:39:10,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290977487] [2021-06-11 20:39:10,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:39:10,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:39:10,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:39:10,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:39:10,279 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:39:10,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 2063 transitions, 50647 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:10,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:39:10,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:39:10,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:39:13,985 INFO L129 PetriNetUnfolder]: 3396/6481 cut-off events. [2021-06-11 20:39:13,985 INFO L130 PetriNetUnfolder]: For 240713/240715 co-relation queries the response was YES. [2021-06-11 20:39:14,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69187 conditions, 6481 events. 3396/6481 cut-off events. For 240713/240715 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 50533 event pairs, 327 based on Foata normal form. 3/5779 useless extension candidates. Maximal degree in co-relation 68921. Up to 4081 conditions per place. [2021-06-11 20:39:14,129 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 1677 selfloop transitions, 441 changer transitions 0/2136 dead transitions. [2021-06-11 20:39:14,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 750 places, 2136 transitions, 56792 flow [2021-06-11 20:39:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-11 20:39:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-06-11 20:39:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1196 transitions. [2021-06-11 20:39:14,130 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5783365570599613 [2021-06-11 20:39:14,131 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1196 transitions. [2021-06-11 20:39:14,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1196 transitions. [2021-06-11 20:39:14,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:39:14,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1196 transitions. [2021-06-11 20:39:14,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 54.36363636363637) internal successors, (1196), 22 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:14,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 94.0) internal successors, (2162), 23 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:14,133 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 94.0) internal successors, (2162), 23 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:14,133 INFO L185 Difference]: Start difference. First operand has 729 places, 2063 transitions, 50647 flow. Second operand 22 states and 1196 transitions. [2021-06-11 20:39:14,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 750 places, 2136 transitions, 56792 flow [2021-06-11 20:39:16,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 727 places, 2136 transitions, 55001 flow, removed 2 selfloop flow, removed 23 redundant places. [2021-06-11 20:39:16,178 INFO L241 Difference]: Finished difference. Result has 734 places, 2100 transitions, 50883 flow [2021-06-11 20:39:16,180 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=48888, PETRI_DIFFERENCE_MINUEND_PLACES=706, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2063, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=409, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=50883, PETRI_PLACES=734, PETRI_TRANSITIONS=2100} [2021-06-11 20:39:16,180 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 681 predicate places. [2021-06-11 20:39:16,180 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:39:16,180 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 734 places, 2100 transitions, 50883 flow [2021-06-11 20:39:16,180 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 734 places, 2100 transitions, 50883 flow [2021-06-11 20:39:16,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 734 places, 2100 transitions, 50883 flow [2021-06-11 20:39:17,535 INFO L129 PetriNetUnfolder]: 2821/5676 cut-off events. [2021-06-11 20:39:17,535 INFO L130 PetriNetUnfolder]: For 164399/164536 co-relation queries the response was YES. [2021-06-11 20:39:17,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55696 conditions, 5676 events. 2821/5676 cut-off events. For 164399/164536 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 46664 event pairs, 100 based on Foata normal form. 30/4898 useless extension candidates. Maximal degree in co-relation 55434. Up to 1953 conditions per place. [2021-06-11 20:39:17,725 INFO L151 LiptonReduction]: Number of co-enabled transitions 10936 [2021-06-11 20:39:18,378 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:39:18,379 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:39:18,379 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2199 [2021-06-11 20:39:18,379 INFO L480 AbstractCegarLoop]: Abstraction has has 734 places, 2100 transitions, 50883 flow [2021-06-11 20:39:18,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:18,379 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:39:18,379 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] [2021-06-11 20:39:18,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-11 20:39:18,379 INFO L428 AbstractCegarLoop]: === Iteration 53 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:39:18,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:39:18,380 INFO L82 PathProgramCache]: Analyzing trace with hash -426344235, now seen corresponding path program 5 times [2021-06-11 20:39:18,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:39:18,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629608380] [2021-06-11 20:39:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:39:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:39:18,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:18,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:39:18,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:18,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:39:18,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:18,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:18,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:18,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:18,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:18,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:18,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:18,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:18,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:18,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:18,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:18,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:39:18,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:18,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:39:18,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:18,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:18,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:18,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:18,536 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:39:18,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:39:18,555 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:39:18,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:39:18,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629608380] [2021-06-11 20:39:18,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:39:18,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:39:18,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642372073] [2021-06-11 20:39:18,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:39:18,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:39:18,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:39:18,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:39:18,558 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:39:18,558 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 734 places, 2100 transitions, 50883 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:18,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:39:18,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:39:18,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:39:22,611 INFO L129 PetriNetUnfolder]: 3444/6604 cut-off events. [2021-06-11 20:39:22,611 INFO L130 PetriNetUnfolder]: For 256137/256139 co-relation queries the response was YES. [2021-06-11 20:39:22,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70260 conditions, 6604 events. 3444/6604 cut-off events. For 256137/256139 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 51898 event pairs, 332 based on Foata normal form. 3/5878 useless extension candidates. Maximal degree in co-relation 69992. Up to 4233 conditions per place. [2021-06-11 20:39:22,773 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 1824 selfloop transitions, 339 changer transitions 0/2181 dead transitions. [2021-06-11 20:39:22,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 763 places, 2181 transitions, 56715 flow [2021-06-11 20:39:22,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-11 20:39:22,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-06-11 20:39:22,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1579 transitions. [2021-06-11 20:39:22,775 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5599290780141843 [2021-06-11 20:39:22,775 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1579 transitions. [2021-06-11 20:39:22,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1579 transitions. [2021-06-11 20:39:22,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:39:22,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1579 transitions. [2021-06-11 20:39:22,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.63333333333333) internal successors, (1579), 30 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:22,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:22,777 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:22,777 INFO L185 Difference]: Start difference. First operand has 734 places, 2100 transitions, 50883 flow. Second operand 30 states and 1579 transitions. [2021-06-11 20:39:22,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 763 places, 2181 transitions, 56715 flow [2021-06-11 20:39:24,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 754 places, 2181 transitions, 56025 flow, removed 204 selfloop flow, removed 9 redundant places. [2021-06-11 20:39:24,979 INFO L241 Difference]: Finished difference. Result has 762 places, 2144 transitions, 51810 flow [2021-06-11 20:39:24,980 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=50193, PETRI_DIFFERENCE_MINUEND_PLACES=725, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1780, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=51810, PETRI_PLACES=762, PETRI_TRANSITIONS=2144} [2021-06-11 20:39:24,980 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 709 predicate places. [2021-06-11 20:39:24,980 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:39:24,981 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 762 places, 2144 transitions, 51810 flow [2021-06-11 20:39:24,981 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 762 places, 2144 transitions, 51810 flow [2021-06-11 20:39:25,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 762 places, 2144 transitions, 51810 flow [2021-06-11 20:39:26,375 INFO L129 PetriNetUnfolder]: 2874/5808 cut-off events. [2021-06-11 20:39:26,375 INFO L130 PetriNetUnfolder]: For 170228/170382 co-relation queries the response was YES. [2021-06-11 20:39:26,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56847 conditions, 5808 events. 2874/5808 cut-off events. For 170228/170382 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 48209 event pairs, 78 based on Foata normal form. 36/5030 useless extension candidates. Maximal degree in co-relation 56576. Up to 1976 conditions per place. [2021-06-11 20:39:26,553 INFO L151 LiptonReduction]: Number of co-enabled transitions 11314 [2021-06-11 20:39:27,355 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:39:27,356 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:39:27,356 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2376 [2021-06-11 20:39:27,356 INFO L480 AbstractCegarLoop]: Abstraction has has 762 places, 2144 transitions, 51810 flow [2021-06-11 20:39:27,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:27,356 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:39:27,356 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] [2021-06-11 20:39:27,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-11 20:39:27,357 INFO L428 AbstractCegarLoop]: === Iteration 54 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:39:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:39:27,357 INFO L82 PathProgramCache]: Analyzing trace with hash 553035609, now seen corresponding path program 6 times [2021-06-11 20:39:27,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:39:27,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470201312] [2021-06-11 20:39:27,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:39:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:39:27,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:27,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:39:27,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:27,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:39:27,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:27,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:27,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:27,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:27,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:27,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:27,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:27,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:27,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:27,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:27,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:27,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:27,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:27,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:27,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:27,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:27,503 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:39:27,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:39:27,523 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:39:27,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:39:27,546 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:39:27,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:39:27,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470201312] [2021-06-11 20:39:27,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:39:27,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:39:27,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371710581] [2021-06-11 20:39:27,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:39:27,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:39:27,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:39:27,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:39:27,555 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:39:27,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 762 places, 2144 transitions, 51810 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:27,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:39:27,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:39:27,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:39:31,828 INFO L129 PetriNetUnfolder]: 3489/6735 cut-off events. [2021-06-11 20:39:31,828 INFO L130 PetriNetUnfolder]: For 269681/269683 co-relation queries the response was YES. [2021-06-11 20:39:31,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71866 conditions, 6735 events. 3489/6735 cut-off events. For 269681/269683 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 53576 event pairs, 323 based on Foata normal form. 3/5990 useless extension candidates. Maximal degree in co-relation 71589. Up to 4129 conditions per place. [2021-06-11 20:39:31,979 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 1708 selfloop transitions, 502 changer transitions 0/2228 dead transitions. [2021-06-11 20:39:31,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 786 places, 2228 transitions, 58294 flow [2021-06-11 20:39:31,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-11 20:39:31,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-06-11 20:39:31,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1351 transitions. [2021-06-11 20:39:31,980 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5748936170212766 [2021-06-11 20:39:31,980 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1351 transitions. [2021-06-11 20:39:31,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1351 transitions. [2021-06-11 20:39:31,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:39:31,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1351 transitions. [2021-06-11 20:39:31,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 54.04) internal successors, (1351), 25 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:31,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 94.0) internal successors, (2444), 26 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:31,982 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 94.0) internal successors, (2444), 26 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:31,982 INFO L185 Difference]: Start difference. First operand has 762 places, 2144 transitions, 51810 flow. Second operand 25 states and 1351 transitions. [2021-06-11 20:39:31,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 786 places, 2228 transitions, 58294 flow [2021-06-11 20:39:34,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 772 places, 2228 transitions, 57660 flow, removed 170 selfloop flow, removed 14 redundant places. [2021-06-11 20:39:34,062 INFO L241 Difference]: Finished difference. Result has 782 places, 2190 transitions, 53489 flow [2021-06-11 20:39:34,063 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=51195, PETRI_DIFFERENCE_MINUEND_PLACES=748, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=460, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=53489, PETRI_PLACES=782, PETRI_TRANSITIONS=2190} [2021-06-11 20:39:34,063 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 729 predicate places. [2021-06-11 20:39:34,063 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:39:34,064 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 782 places, 2190 transitions, 53489 flow [2021-06-11 20:39:34,064 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 782 places, 2190 transitions, 53489 flow [2021-06-11 20:39:34,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 782 places, 2190 transitions, 53489 flow [2021-06-11 20:39:35,728 INFO L129 PetriNetUnfolder]: 2931/5938 cut-off events. [2021-06-11 20:39:35,728 INFO L130 PetriNetUnfolder]: For 182026/182210 co-relation queries the response was YES. [2021-06-11 20:39:35,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58753 conditions, 5938 events. 2931/5938 cut-off events. For 182026/182210 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 49561 event pairs, 95 based on Foata normal form. 44/5124 useless extension candidates. Maximal degree in co-relation 58471. Up to 2008 conditions per place. [2021-06-11 20:39:35,913 INFO L151 LiptonReduction]: Number of co-enabled transitions 11784 [2021-06-11 20:39:36,552 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:39:36,552 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:39:36,553 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2490 [2021-06-11 20:39:36,553 INFO L480 AbstractCegarLoop]: Abstraction has has 782 places, 2190 transitions, 53489 flow [2021-06-11 20:39:36,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:36,553 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:39:36,553 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] [2021-06-11 20:39:36,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-11 20:39:36,553 INFO L428 AbstractCegarLoop]: === Iteration 55 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:39:36,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:39:36,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1401086913, now seen corresponding path program 7 times [2021-06-11 20:39:36,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:39:36,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31753310] [2021-06-11 20:39:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:39:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:39:36,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:36,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:39:36,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:36,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:39:36,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:36,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:36,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:36,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:36,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:36,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:36,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:36,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:36,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:36,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:36,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:36,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:39:36,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:36,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:39:36,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:36,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:36,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:36,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:36,709 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:39:36,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:39:36,726 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:39:36,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:39:36,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31753310] [2021-06-11 20:39:36,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:39:36,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:39:36,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024743955] [2021-06-11 20:39:36,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:39:36,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:39:36,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:39:36,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:39:36,730 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:39:36,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 782 places, 2190 transitions, 53489 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:36,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:39:36,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:39:36,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:39:40,637 INFO L129 PetriNetUnfolder]: 3562/6918 cut-off events. [2021-06-11 20:39:40,637 INFO L130 PetriNetUnfolder]: For 281508/281510 co-relation queries the response was YES. [2021-06-11 20:39:40,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73935 conditions, 6918 events. 3562/6918 cut-off events. For 281508/281510 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 55736 event pairs, 346 based on Foata normal form. 3/6125 useless extension candidates. Maximal degree in co-relation 73647. Up to 4357 conditions per place. [2021-06-11 20:39:40,815 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 1912 selfloop transitions, 348 changer transitions 0/2278 dead transitions. [2021-06-11 20:39:40,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 2278 transitions, 59838 flow [2021-06-11 20:39:40,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-11 20:39:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-06-11 20:39:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1530 transitions. [2021-06-11 20:39:40,816 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5612619222303742 [2021-06-11 20:39:40,816 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1530 transitions. [2021-06-11 20:39:40,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1530 transitions. [2021-06-11 20:39:40,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:39:40,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1530 transitions. [2021-06-11 20:39:40,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 52.758620689655174) internal successors, (1530), 29 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:40,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:40,819 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:40,819 INFO L185 Difference]: Start difference. First operand has 782 places, 2190 transitions, 53489 flow. Second operand 29 states and 1530 transitions. [2021-06-11 20:39:40,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 810 places, 2278 transitions, 59838 flow [2021-06-11 20:39:43,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 800 places, 2278 transitions, 58810 flow, removed 300 selfloop flow, removed 10 redundant places. [2021-06-11 20:39:43,200 INFO L241 Difference]: Finished difference. Result has 808 places, 2241 transitions, 54466 flow [2021-06-11 20:39:43,201 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=52665, PETRI_DIFFERENCE_MINUEND_PLACES=772, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1862, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=54466, PETRI_PLACES=808, PETRI_TRANSITIONS=2241} [2021-06-11 20:39:43,201 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 755 predicate places. [2021-06-11 20:39:43,201 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:39:43,201 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 808 places, 2241 transitions, 54466 flow [2021-06-11 20:39:43,201 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 808 places, 2241 transitions, 54466 flow [2021-06-11 20:39:43,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 808 places, 2241 transitions, 54466 flow [2021-06-11 20:39:44,691 INFO L129 PetriNetUnfolder]: 2986/6070 cut-off events. [2021-06-11 20:39:44,692 INFO L130 PetriNetUnfolder]: For 189736/189943 co-relation queries the response was YES. [2021-06-11 20:39:44,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59993 conditions, 6070 events. 2986/6070 cut-off events. For 189736/189943 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 51212 event pairs, 79 based on Foata normal form. 41/5229 useless extension candidates. Maximal degree in co-relation 59705. Up to 2035 conditions per place. [2021-06-11 20:39:44,883 INFO L151 LiptonReduction]: Number of co-enabled transitions 12270 [2021-06-11 20:39:45,592 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:39:45,592 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:39:45,592 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2391 [2021-06-11 20:39:45,593 INFO L480 AbstractCegarLoop]: Abstraction has has 808 places, 2241 transitions, 54466 flow [2021-06-11 20:39:45,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:45,593 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:39:45,593 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] [2021-06-11 20:39:45,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-11 20:39:45,593 INFO L428 AbstractCegarLoop]: === Iteration 56 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:39:45,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:39:45,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1497412541, now seen corresponding path program 8 times [2021-06-11 20:39:45,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:39:45,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111684830] [2021-06-11 20:39:45,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:39:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:39:45,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:45,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:39:45,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:45,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:39:45,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:45,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:45,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:45,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:45,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:45,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:45,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:45,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:45,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:45,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:45,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:45,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:45,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:45,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:45,708 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:39:45,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:39:45,711 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:39:45,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:39:45,731 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:39:45,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:39:45,753 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:39:45,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:39:45,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111684830] [2021-06-11 20:39:45,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:39:45,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 20:39:45,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936314145] [2021-06-11 20:39:45,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-11 20:39:45,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:39:45,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-11 20:39:45,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-06-11 20:39:45,758 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:39:45,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 2241 transitions, 54466 flow. Second operand has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:45,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:39:45,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:39:45,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:39:49,987 INFO L129 PetriNetUnfolder]: 3559/6912 cut-off events. [2021-06-11 20:39:49,988 INFO L130 PetriNetUnfolder]: For 286756/286758 co-relation queries the response was YES. [2021-06-11 20:39:50,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74483 conditions, 6912 events. 3559/6912 cut-off events. For 286756/286758 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 55684 event pairs, 288 based on Foata normal form. 3/6125 useless extension candidates. Maximal degree in co-relation 74192. Up to 4149 conditions per place. [2021-06-11 20:39:50,160 INFO L132 encePairwiseOnDemand]: 76/94 looper letters, 1803 selfloop transitions, 467 changer transitions 0/2288 dead transitions. [2021-06-11 20:39:50,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 821 places, 2288 transitions, 60107 flow [2021-06-11 20:39:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-11 20:39:50,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-06-11 20:39:50,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 772 transitions. [2021-06-11 20:39:50,161 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5866261398176292 [2021-06-11 20:39:50,161 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 772 transitions. [2021-06-11 20:39:50,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 772 transitions. [2021-06-11 20:39:50,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:39:50,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 772 transitions. [2021-06-11 20:39:50,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 55.142857142857146) internal successors, (772), 14 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:50,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 94.0) internal successors, (1410), 15 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:50,163 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 94.0) internal successors, (1410), 15 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:50,163 INFO L185 Difference]: Start difference. First operand has 808 places, 2241 transitions, 54466 flow. Second operand 14 states and 772 transitions. [2021-06-11 20:39:50,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 821 places, 2288 transitions, 60107 flow [2021-06-11 20:39:52,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 807 places, 2288 transitions, 59414 flow, removed 207 selfloop flow, removed 14 redundant places. [2021-06-11 20:39:52,772 INFO L241 Difference]: Finished difference. Result has 812 places, 2262 transitions, 55375 flow [2021-06-11 20:39:52,772 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=53779, PETRI_DIFFERENCE_MINUEND_PLACES=794, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=446, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1776, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=55375, PETRI_PLACES=812, PETRI_TRANSITIONS=2262} [2021-06-11 20:39:52,773 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 759 predicate places. [2021-06-11 20:39:52,773 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:39:52,773 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 812 places, 2262 transitions, 55375 flow [2021-06-11 20:39:52,773 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 812 places, 2262 transitions, 55375 flow [2021-06-11 20:39:52,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 812 places, 2262 transitions, 55375 flow [2021-06-11 20:39:54,200 INFO L129 PetriNetUnfolder]: 2974/6098 cut-off events. [2021-06-11 20:39:54,200 INFO L130 PetriNetUnfolder]: For 184340/184465 co-relation queries the response was YES. [2021-06-11 20:39:54,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60090 conditions, 6098 events. 2974/6098 cut-off events. For 184340/184465 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 51651 event pairs, 56 based on Foata normal form. 36/5260 useless extension candidates. Maximal degree in co-relation 59799. Up to 2008 conditions per place. [2021-06-11 20:39:54,398 INFO L151 LiptonReduction]: Number of co-enabled transitions 12396 [2021-06-11 20:39:55,356 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:39:55,357 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:39:55,357 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2584 [2021-06-11 20:39:55,357 INFO L480 AbstractCegarLoop]: Abstraction has has 812 places, 2262 transitions, 55375 flow [2021-06-11 20:39:55,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:55,357 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:39:55,357 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] [2021-06-11 20:39:55,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-11 20:39:55,357 INFO L428 AbstractCegarLoop]: === Iteration 57 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:39:55,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:39:55,358 INFO L82 PathProgramCache]: Analyzing trace with hash -2139305749, now seen corresponding path program 9 times [2021-06-11 20:39:55,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:39:55,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703486547] [2021-06-11 20:39:55,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:39:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:39:55,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:55,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:39:55,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:55,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:39:55,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:55,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:55,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:55,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:55,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:55,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:55,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:55,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:39:55,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:55,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:55,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:55,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:39:55,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:55,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:39:55,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:39:55,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:55,503 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:39:55,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:39:55,520 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:39:55,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:39:55,538 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:39:55,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:39:55,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:39:55,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703486547] [2021-06-11 20:39:55,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:39:55,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:39:55,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451264423] [2021-06-11 20:39:55,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:39:55,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:39:55,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:39:55,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:39:55,541 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:39:55,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 812 places, 2262 transitions, 55375 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:39:55,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:39:55,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:39:55,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:40:00,554 INFO L129 PetriNetUnfolder]: 3584/7014 cut-off events. [2021-06-11 20:40:00,555 INFO L130 PetriNetUnfolder]: For 285173/285181 co-relation queries the response was YES. [2021-06-11 20:40:00,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75363 conditions, 7014 events. 3584/7014 cut-off events. For 285173/285181 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 57155 event pairs, 329 based on Foata normal form. 9/6211 useless extension candidates. Maximal degree in co-relation 75074. Up to 4183 conditions per place. [2021-06-11 20:40:00,718 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 1759 selfloop transitions, 545 changer transitions 0/2322 dead transitions. [2021-06-11 20:40:00,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 843 places, 2322 transitions, 61248 flow [2021-06-11 20:40:00,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-11 20:40:00,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-06-11 20:40:00,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1692 transitions. [2021-06-11 20:40:00,719 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5625 [2021-06-11 20:40:00,719 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1692 transitions. [2021-06-11 20:40:00,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1692 transitions. [2021-06-11 20:40:00,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:40:00,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1692 transitions. [2021-06-11 20:40:00,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.875) internal successors, (1692), 32 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:00,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:00,722 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:00,722 INFO L185 Difference]: Start difference. First operand has 812 places, 2262 transitions, 55375 flow. Second operand 32 states and 1692 transitions. [2021-06-11 20:40:00,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 843 places, 2322 transitions, 61248 flow [2021-06-11 20:40:03,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 2322 transitions, 60314 flow, removed 86 selfloop flow, removed 7 redundant places. [2021-06-11 20:40:03,338 INFO L241 Difference]: Finished difference. Result has 841 places, 2277 transitions, 55931 flow [2021-06-11 20:40:03,339 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=54443, PETRI_DIFFERENCE_MINUEND_PLACES=805, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=530, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1727, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=55931, PETRI_PLACES=841, PETRI_TRANSITIONS=2277} [2021-06-11 20:40:03,339 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 788 predicate places. [2021-06-11 20:40:03,339 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:40:03,339 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 841 places, 2277 transitions, 55931 flow [2021-06-11 20:40:03,339 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 841 places, 2277 transitions, 55931 flow [2021-06-11 20:40:03,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 841 places, 2277 transitions, 55931 flow [2021-06-11 20:40:05,452 INFO L129 PetriNetUnfolder]: 3008/6177 cut-off events. [2021-06-11 20:40:05,452 INFO L130 PetriNetUnfolder]: For 185628/185759 co-relation queries the response was YES. [2021-06-11 20:40:05,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60731 conditions, 6177 events. 3008/6177 cut-off events. For 185628/185759 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 52709 event pairs, 54 based on Foata normal form. 25/5299 useless extension candidates. Maximal degree in co-relation 60440. Up to 2018 conditions per place. [2021-06-11 20:40:05,642 INFO L151 LiptonReduction]: Number of co-enabled transitions 12570 [2021-06-11 20:40:06,372 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:40:06,372 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:40:06,372 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3033 [2021-06-11 20:40:06,373 INFO L480 AbstractCegarLoop]: Abstraction has has 841 places, 2277 transitions, 55931 flow [2021-06-11 20:40:06,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:06,373 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:40:06,373 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] [2021-06-11 20:40:06,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-11 20:40:06,373 INFO L428 AbstractCegarLoop]: === Iteration 58 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:40:06,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:40:06,373 INFO L82 PathProgramCache]: Analyzing trace with hash 994180987, now seen corresponding path program 10 times [2021-06-11 20:40:06,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:40:06,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230278142] [2021-06-11 20:40:06,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:40:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:40:06,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:06,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:40:06,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:06,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:40:06,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:06,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:06,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:06,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:06,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:06,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:06,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:06,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:06,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:06,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:06,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:06,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:40:06,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:06,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:06,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:06,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:06,507 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:40:06,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:40:06,525 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:40:06,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:40:06,547 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:40:06,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:40:06,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230278142] [2021-06-11 20:40:06,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:40:06,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:40:06,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393110164] [2021-06-11 20:40:06,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:40:06,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:40:06,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:40:06,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:40:06,550 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:40:06,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 841 places, 2277 transitions, 55931 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:06,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:40:06,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:40:06,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:40:12,277 INFO L129 PetriNetUnfolder]: 3668/7189 cut-off events. [2021-06-11 20:40:12,278 INFO L130 PetriNetUnfolder]: For 294991/294993 co-relation queries the response was YES. [2021-06-11 20:40:12,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77357 conditions, 7189 events. 3668/7189 cut-off events. For 294991/294993 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 59057 event pairs, 326 based on Foata normal form. 3/6359 useless extension candidates. Maximal degree in co-relation 77068. Up to 4179 conditions per place. [2021-06-11 20:40:12,460 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 1708 selfloop transitions, 656 changer transitions 0/2382 dead transitions. [2021-06-11 20:40:12,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 872 places, 2382 transitions, 63449 flow [2021-06-11 20:40:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-11 20:40:12,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-06-11 20:40:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1714 transitions. [2021-06-11 20:40:12,462 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.569813829787234 [2021-06-11 20:40:12,462 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1714 transitions. [2021-06-11 20:40:12,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1714 transitions. [2021-06-11 20:40:12,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:40:12,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1714 transitions. [2021-06-11 20:40:12,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.5625) internal successors, (1714), 32 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:12,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:12,465 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:12,465 INFO L185 Difference]: Start difference. First operand has 841 places, 2277 transitions, 55931 flow. Second operand 32 states and 1714 transitions. [2021-06-11 20:40:12,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 872 places, 2382 transitions, 63449 flow [2021-06-11 20:40:15,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 855 places, 2382 transitions, 61987 flow, removed 231 selfloop flow, removed 17 redundant places. [2021-06-11 20:40:15,813 INFO L241 Difference]: Finished difference. Result has 864 places, 2341 transitions, 57943 flow [2021-06-11 20:40:15,815 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=54486, PETRI_DIFFERENCE_MINUEND_PLACES=824, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=596, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=57943, PETRI_PLACES=864, PETRI_TRANSITIONS=2341} [2021-06-11 20:40:15,815 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 811 predicate places. [2021-06-11 20:40:15,815 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:40:15,815 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 864 places, 2341 transitions, 57943 flow [2021-06-11 20:40:15,816 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 864 places, 2341 transitions, 57943 flow [2021-06-11 20:40:15,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 864 places, 2341 transitions, 57943 flow [2021-06-11 20:40:17,747 INFO L129 PetriNetUnfolder]: 3080/6332 cut-off events. [2021-06-11 20:40:17,747 INFO L130 PetriNetUnfolder]: For 204496/204640 co-relation queries the response was YES. [2021-06-11 20:40:18,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63165 conditions, 6332 events. 3080/6332 cut-off events. For 204496/204640 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 54367 event pairs, 94 based on Foata normal form. 34/5440 useless extension candidates. Maximal degree in co-relation 62865. Up to 2040 conditions per place. [2021-06-11 20:40:18,275 INFO L151 LiptonReduction]: Number of co-enabled transitions 12976 [2021-06-11 20:40:19,002 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:40:19,003 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:40:19,003 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3188 [2021-06-11 20:40:19,003 INFO L480 AbstractCegarLoop]: Abstraction has has 864 places, 2341 transitions, 57943 flow [2021-06-11 20:40:19,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:19,003 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:40:19,003 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] [2021-06-11 20:40:19,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-11 20:40:19,004 INFO L428 AbstractCegarLoop]: === Iteration 59 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:40:19,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:40:19,004 INFO L82 PathProgramCache]: Analyzing trace with hash 2124860581, now seen corresponding path program 11 times [2021-06-11 20:40:19,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:40:19,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103475108] [2021-06-11 20:40:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:40:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:40:19,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:19,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:40:19,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:19,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:40:19,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:19,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:19,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:19,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:19,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:19,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:19,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:19,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:19,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:19,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:19,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:19,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:40:19,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:19,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:40:19,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:19,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:19,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:19,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:19,144 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:40:19,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:40:19,167 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:40:19,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:40:19,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103475108] [2021-06-11 20:40:19,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:40:19,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:40:19,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407481804] [2021-06-11 20:40:19,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:40:19,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:40:19,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:40:19,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:40:19,173 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:40:19,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 864 places, 2341 transitions, 57943 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:19,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:40:19,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:40:19,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:40:24,578 INFO L129 PetriNetUnfolder]: 3678/7212 cut-off events. [2021-06-11 20:40:24,578 INFO L130 PetriNetUnfolder]: For 311871/311873 co-relation queries the response was YES. [2021-06-11 20:40:24,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78560 conditions, 7212 events. 3678/7212 cut-off events. For 311871/311873 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 59296 event pairs, 353 based on Foata normal form. 3/6372 useless extension candidates. Maximal degree in co-relation 78262. Up to 4484 conditions per place. [2021-06-11 20:40:24,749 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 1994 selfloop transitions, 357 changer transitions 0/2369 dead transitions. [2021-06-11 20:40:24,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 891 places, 2369 transitions, 63143 flow [2021-06-11 20:40:24,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-11 20:40:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-06-11 20:40:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1474 transitions. [2021-06-11 20:40:24,750 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5600303951367781 [2021-06-11 20:40:24,750 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1474 transitions. [2021-06-11 20:40:24,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1474 transitions. [2021-06-11 20:40:24,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:40:24,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1474 transitions. [2021-06-11 20:40:24,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 52.642857142857146) internal successors, (1474), 28 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:24,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:24,753 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:24,753 INFO L185 Difference]: Start difference. First operand has 864 places, 2341 transitions, 57943 flow. Second operand 28 states and 1474 transitions. [2021-06-11 20:40:24,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 891 places, 2369 transitions, 63143 flow [2021-06-11 20:40:27,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 871 places, 2369 transitions, 61975 flow, removed 375 selfloop flow, removed 20 redundant places. [2021-06-11 20:40:27,749 INFO L241 Difference]: Finished difference. Result has 873 places, 2342 transitions, 57512 flow [2021-06-11 20:40:27,750 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=56775, PETRI_DIFFERENCE_MINUEND_PLACES=844, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=356, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1984, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=57512, PETRI_PLACES=873, PETRI_TRANSITIONS=2342} [2021-06-11 20:40:27,750 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 820 predicate places. [2021-06-11 20:40:27,750 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:40:27,750 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 873 places, 2342 transitions, 57512 flow [2021-06-11 20:40:27,750 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 873 places, 2342 transitions, 57512 flow [2021-06-11 20:40:27,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 873 places, 2342 transitions, 57512 flow [2021-06-11 20:40:29,836 INFO L129 PetriNetUnfolder]: 3055/6323 cut-off events. [2021-06-11 20:40:29,836 INFO L130 PetriNetUnfolder]: For 196204/196304 co-relation queries the response was YES. [2021-06-11 20:40:29,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62247 conditions, 6323 events. 3055/6323 cut-off events. For 196204/196304 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 54593 event pairs, 87 based on Foata normal form. 35/5453 useless extension candidates. Maximal degree in co-relation 61944. Up to 1977 conditions per place. [2021-06-11 20:40:30,053 INFO L151 LiptonReduction]: Number of co-enabled transitions 12986 [2021-06-11 20:40:30,809 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:40:30,809 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:40:30,809 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3059 [2021-06-11 20:40:30,809 INFO L480 AbstractCegarLoop]: Abstraction has has 873 places, 2342 transitions, 57512 flow [2021-06-11 20:40:30,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:30,809 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:40:30,809 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] [2021-06-11 20:40:30,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-11 20:40:30,810 INFO L428 AbstractCegarLoop]: === Iteration 60 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:40:30,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:40:30,810 INFO L82 PathProgramCache]: Analyzing trace with hash 432105699, now seen corresponding path program 12 times [2021-06-11 20:40:30,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:40:30,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434145117] [2021-06-11 20:40:30,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:40:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:40:30,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:30,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:40:30,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:30,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:40:30,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:30,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:30,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:30,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:30,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:30,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:30,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:30,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:30,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:30,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:30,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:30,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:30,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:30,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:30,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:30,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:30,947 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:40:30,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:40:30,964 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:40:30,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:40:30,982 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:40:30,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:40:30,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434145117] [2021-06-11 20:40:30,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:40:30,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:40:30,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104412279] [2021-06-11 20:40:30,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:40:30,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:40:30,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:40:30,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:40:30,985 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:40:30,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 873 places, 2342 transitions, 57512 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:30,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:40:30,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:40:30,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:40:36,316 INFO L129 PetriNetUnfolder]: 3743/7354 cut-off events. [2021-06-11 20:40:36,317 INFO L130 PetriNetUnfolder]: For 311176/311178 co-relation queries the response was YES. [2021-06-11 20:40:36,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79845 conditions, 7354 events. 3743/7354 cut-off events. For 311176/311178 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 60867 event pairs, 351 based on Foata normal form. 3/6495 useless extension candidates. Maximal degree in co-relation 79544. Up to 4414 conditions per place. [2021-06-11 20:40:36,531 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 1893 selfloop transitions, 544 changer transitions 0/2455 dead transitions. [2021-06-11 20:40:36,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 902 places, 2455 transitions, 65213 flow [2021-06-11 20:40:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-11 20:40:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-06-11 20:40:36,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1599 transitions. [2021-06-11 20:40:36,533 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5670212765957446 [2021-06-11 20:40:36,533 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1599 transitions. [2021-06-11 20:40:36,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1599 transitions. [2021-06-11 20:40:36,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:40:36,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1599 transitions. [2021-06-11 20:40:36,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.3) internal successors, (1599), 30 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:36,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:36,536 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:36,536 INFO L185 Difference]: Start difference. First operand has 873 places, 2342 transitions, 57512 flow. Second operand 30 states and 1599 transitions. [2021-06-11 20:40:36,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 902 places, 2455 transitions, 65213 flow [2021-06-11 20:40:39,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 881 places, 2455 transitions, 64517 flow, removed 3 selfloop flow, removed 21 redundant places. [2021-06-11 20:40:39,646 INFO L241 Difference]: Finished difference. Result has 889 places, 2416 transitions, 60229 flow [2021-06-11 20:40:39,648 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=56858, PETRI_DIFFERENCE_MINUEND_PLACES=852, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=472, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=60229, PETRI_PLACES=889, PETRI_TRANSITIONS=2416} [2021-06-11 20:40:39,648 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 836 predicate places. [2021-06-11 20:40:39,648 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:40:39,648 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 889 places, 2416 transitions, 60229 flow [2021-06-11 20:40:39,648 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 889 places, 2416 transitions, 60229 flow [2021-06-11 20:40:39,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 889 places, 2416 transitions, 60229 flow [2021-06-11 20:40:41,881 INFO L129 PetriNetUnfolder]: 3135/6473 cut-off events. [2021-06-11 20:40:41,881 INFO L130 PetriNetUnfolder]: For 205843/205994 co-relation queries the response was YES. [2021-06-11 20:40:42,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64479 conditions, 6473 events. 3135/6473 cut-off events. For 205843/205994 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 56367 event pairs, 68 based on Foata normal form. 36/5559 useless extension candidates. Maximal degree in co-relation 64168. Up to 2034 conditions per place. [2021-06-11 20:40:42,078 INFO L151 LiptonReduction]: Number of co-enabled transitions 13658 [2021-06-11 20:40:42,840 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:40:42,840 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:40:42,840 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3192 [2021-06-11 20:40:42,840 INFO L480 AbstractCegarLoop]: Abstraction has has 889 places, 2416 transitions, 60229 flow [2021-06-11 20:40:42,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:42,840 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:40:42,840 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] [2021-06-11 20:40:42,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-11 20:40:42,840 INFO L428 AbstractCegarLoop]: === Iteration 61 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:40:42,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:40:42,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1384127639, now seen corresponding path program 13 times [2021-06-11 20:40:42,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:40:42,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921639296] [2021-06-11 20:40:42,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:40:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:40:42,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:42,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:40:42,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:42,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:40:42,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:42,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:42,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:42,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:42,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:42,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:42,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:42,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:42,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:42,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:40:42,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:42,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:40:42,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:42,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:40:42,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:42,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:42,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:42,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:43,014 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:40:43,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:40:43,035 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:40:43,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:43,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:40:43,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921639296] [2021-06-11 20:40:43,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:40:43,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:40:43,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337107487] [2021-06-11 20:40:43,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:40:43,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:40:43,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:40:43,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:40:43,039 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:40:43,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 2416 transitions, 60229 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:43,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:40:43,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:40:43,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:40:48,338 INFO L129 PetriNetUnfolder]: 3889/7702 cut-off events. [2021-06-11 20:40:48,338 INFO L130 PetriNetUnfolder]: For 338837/338841 co-relation queries the response was YES. [2021-06-11 20:40:48,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84186 conditions, 7702 events. 3889/7702 cut-off events. For 338837/338841 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 64991 event pairs, 355 based on Foata normal form. 5/6784 useless extension candidates. Maximal degree in co-relation 83877. Up to 4511 conditions per place. [2021-06-11 20:40:48,550 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 1990 selfloop transitions, 565 changer transitions 0/2573 dead transitions. [2021-06-11 20:40:48,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 919 places, 2573 transitions, 71174 flow [2021-06-11 20:40:48,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-11 20:40:48,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-06-11 20:40:48,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1642 transitions. [2021-06-11 20:40:48,552 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5634866163349348 [2021-06-11 20:40:48,552 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1642 transitions. [2021-06-11 20:40:48,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1642 transitions. [2021-06-11 20:40:48,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:40:48,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1642 transitions. [2021-06-11 20:40:48,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.96774193548387) internal successors, (1642), 31 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:48,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:48,554 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:48,554 INFO L185 Difference]: Start difference. First operand has 889 places, 2416 transitions, 60229 flow. Second operand 31 states and 1642 transitions. [2021-06-11 20:40:48,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 919 places, 2573 transitions, 71174 flow [2021-06-11 20:40:51,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 900 places, 2573 transitions, 70255 flow, removed 63 selfloop flow, removed 19 redundant places. [2021-06-11 20:40:51,909 INFO L241 Difference]: Finished difference. Result has 910 places, 2533 transitions, 65758 flow [2021-06-11 20:40:51,910 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=59364, PETRI_DIFFERENCE_MINUEND_PLACES=870, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=455, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1911, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=65758, PETRI_PLACES=910, PETRI_TRANSITIONS=2533} [2021-06-11 20:40:51,910 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 857 predicate places. [2021-06-11 20:40:51,911 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:40:51,911 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 910 places, 2533 transitions, 65758 flow [2021-06-11 20:40:51,911 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 910 places, 2533 transitions, 65758 flow [2021-06-11 20:40:51,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 910 places, 2533 transitions, 65758 flow [2021-06-11 20:40:54,090 INFO L129 PetriNetUnfolder]: 3278/6790 cut-off events. [2021-06-11 20:40:54,090 INFO L130 PetriNetUnfolder]: For 231782/231954 co-relation queries the response was YES. [2021-06-11 20:40:54,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69494 conditions, 6790 events. 3278/6790 cut-off events. For 231782/231954 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 59904 event pairs, 80 based on Foata normal form. 38/5813 useless extension candidates. Maximal degree in co-relation 69172. Up to 2176 conditions per place. [2021-06-11 20:40:54,637 INFO L151 LiptonReduction]: Number of co-enabled transitions 14126 [2021-06-11 20:40:55,524 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:40:55,524 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:40:55,525 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3614 [2021-06-11 20:40:55,525 INFO L480 AbstractCegarLoop]: Abstraction has has 910 places, 2533 transitions, 65758 flow [2021-06-11 20:40:55,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:55,525 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:40:55,525 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] [2021-06-11 20:40:55,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-11 20:40:55,525 INFO L428 AbstractCegarLoop]: === Iteration 62 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:40:55,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:40:55,525 INFO L82 PathProgramCache]: Analyzing trace with hash -969921633, now seen corresponding path program 14 times [2021-06-11 20:40:55,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:40:55,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255687081] [2021-06-11 20:40:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:40:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:40:55,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:55,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:40:55,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:55,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:40:55,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:55,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:55,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:55,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:55,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:55,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:55,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:55,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:55,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:55,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:55,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:55,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:40:55,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:55,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:40:55,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:55,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:55,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:40:55,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:40:55,697 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:40:55,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:40:55,717 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:40:55,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:40:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:40:55,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255687081] [2021-06-11 20:40:55,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:40:55,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:40:55,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410821285] [2021-06-11 20:40:55,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:40:55,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:40:55,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:40:55,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:40:55,721 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:40:55,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 2533 transitions, 65758 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:40:55,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:40:55,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:40:55,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:41:01,485 INFO L129 PetriNetUnfolder]: 3944/7828 cut-off events. [2021-06-11 20:41:01,485 INFO L130 PetriNetUnfolder]: For 353974/353976 co-relation queries the response was YES. [2021-06-11 20:41:01,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86563 conditions, 7828 events. 3944/7828 cut-off events. For 353974/353976 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 66266 event pairs, 388 based on Foata normal form. 3/6876 useless extension candidates. Maximal degree in co-relation 86243. Up to 4856 conditions per place. [2021-06-11 20:41:01,693 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 2231 selfloop transitions, 358 changer transitions 0/2607 dead transitions. [2021-06-11 20:41:01,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 938 places, 2607 transitions, 72573 flow [2021-06-11 20:41:01,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-11 20:41:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-06-11 20:41:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1523 transitions. [2021-06-11 20:41:01,694 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5586940572267058 [2021-06-11 20:41:01,694 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1523 transitions. [2021-06-11 20:41:01,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1523 transitions. [2021-06-11 20:41:01,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:41:01,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1523 transitions. [2021-06-11 20:41:01,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 52.51724137931034) internal successors, (1523), 29 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:01,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:01,697 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:01,697 INFO L185 Difference]: Start difference. First operand has 910 places, 2533 transitions, 65758 flow. Second operand 29 states and 1523 transitions. [2021-06-11 20:41:01,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 938 places, 2607 transitions, 72573 flow [2021-06-11 20:41:05,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 931 places, 2607 transitions, 70801 flow, removed 846 selfloop flow, removed 7 redundant places. [2021-06-11 20:41:05,769 INFO L241 Difference]: Finished difference. Result has 940 places, 2577 transitions, 65841 flow [2021-06-11 20:41:05,770 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=64074, PETRI_DIFFERENCE_MINUEND_PLACES=903, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=65841, PETRI_PLACES=940, PETRI_TRANSITIONS=2577} [2021-06-11 20:41:05,770 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 887 predicate places. [2021-06-11 20:41:05,770 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:41:05,770 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 940 places, 2577 transitions, 65841 flow [2021-06-11 20:41:05,771 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 940 places, 2577 transitions, 65841 flow [2021-06-11 20:41:05,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 940 places, 2577 transitions, 65841 flow [2021-06-11 20:41:08,008 INFO L129 PetriNetUnfolder]: 3307/6918 cut-off events. [2021-06-11 20:41:08,008 INFO L130 PetriNetUnfolder]: For 219334/219517 co-relation queries the response was YES. [2021-06-11 20:41:08,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68597 conditions, 6918 events. 3307/6918 cut-off events. For 219334/219517 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 61583 event pairs, 77 based on Foata normal form. 32/5919 useless extension candidates. Maximal degree in co-relation 68266. Up to 2123 conditions per place. [2021-06-11 20:41:08,244 INFO L151 LiptonReduction]: Number of co-enabled transitions 14510 [2021-06-11 20:41:09,305 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:41:09,306 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:41:09,306 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3536 [2021-06-11 20:41:09,306 INFO L480 AbstractCegarLoop]: Abstraction has has 940 places, 2577 transitions, 65841 flow [2021-06-11 20:41:09,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:09,306 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:41:09,306 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] [2021-06-11 20:41:09,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-11 20:41:09,306 INFO L428 AbstractCegarLoop]: === Iteration 63 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:41:09,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:41:09,307 INFO L82 PathProgramCache]: Analyzing trace with hash -2044374987, now seen corresponding path program 15 times [2021-06-11 20:41:09,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:41:09,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500350242] [2021-06-11 20:41:09,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:41:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:41:09,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:09,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:41:09,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:09,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:41:09,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:09,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:09,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:09,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:41:09,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:09,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:41:09,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:09,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:09,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:09,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:09,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:09,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:41:09,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:09,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:41:09,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:09,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:09,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:09,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:41:09,448 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:41:09,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:41:09,467 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:41:09,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:41:09,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500350242] [2021-06-11 20:41:09,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:41:09,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:41:09,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752792365] [2021-06-11 20:41:09,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:41:09,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:41:09,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:41:09,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:41:09,472 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:41:09,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 940 places, 2577 transitions, 65841 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:09,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:41:09,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:41:09,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:41:15,213 INFO L129 PetriNetUnfolder]: 3944/7834 cut-off events. [2021-06-11 20:41:15,213 INFO L130 PetriNetUnfolder]: For 338022/338024 co-relation queries the response was YES. [2021-06-11 20:41:15,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85238 conditions, 7834 events. 3944/7834 cut-off events. For 338022/338024 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 66513 event pairs, 387 based on Foata normal form. 3/6881 useless extension candidates. Maximal degree in co-relation 84909. Up to 4857 conditions per place. [2021-06-11 20:41:15,431 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 2238 selfloop transitions, 351 changer transitions 0/2607 dead transitions. [2021-06-11 20:41:15,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 966 places, 2607 transitions, 71700 flow [2021-06-11 20:41:15,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-11 20:41:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-06-11 20:41:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1419 transitions. [2021-06-11 20:41:15,433 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5591016548463357 [2021-06-11 20:41:15,433 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1419 transitions. [2021-06-11 20:41:15,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1419 transitions. [2021-06-11 20:41:15,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:41:15,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1419 transitions. [2021-06-11 20:41:15,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 52.55555555555556) internal successors, (1419), 27 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:15,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 94.0) internal successors, (2632), 28 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:15,435 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 94.0) internal successors, (2632), 28 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:15,435 INFO L185 Difference]: Start difference. First operand has 940 places, 2577 transitions, 65841 flow. Second operand 27 states and 1419 transitions. [2021-06-11 20:41:15,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 966 places, 2607 transitions, 71700 flow [2021-06-11 20:41:18,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 952 places, 2607 transitions, 70844 flow, removed 268 selfloop flow, removed 14 redundant places. [2021-06-11 20:41:18,860 INFO L241 Difference]: Finished difference. Result has 954 places, 2579 transitions, 65759 flow [2021-06-11 20:41:18,861 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=65027, PETRI_DIFFERENCE_MINUEND_PLACES=926, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=349, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=65759, PETRI_PLACES=954, PETRI_TRANSITIONS=2579} [2021-06-11 20:41:18,861 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 901 predicate places. [2021-06-11 20:41:18,861 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:41:18,861 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 954 places, 2579 transitions, 65759 flow [2021-06-11 20:41:18,861 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 954 places, 2579 transitions, 65759 flow [2021-06-11 20:41:18,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 954 places, 2579 transitions, 65759 flow [2021-06-11 20:41:21,238 INFO L129 PetriNetUnfolder]: 3313/6907 cut-off events. [2021-06-11 20:41:21,238 INFO L130 PetriNetUnfolder]: For 215694/216072 co-relation queries the response was YES. [2021-06-11 20:41:21,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68538 conditions, 6907 events. 3313/6907 cut-off events. For 215694/216072 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 61500 event pairs, 95 based on Foata normal form. 33/5896 useless extension candidates. Maximal degree in co-relation 68204. Up to 2124 conditions per place. [2021-06-11 20:41:21,513 INFO L151 LiptonReduction]: Number of co-enabled transitions 14536 [2021-06-11 20:41:22,394 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:41:22,394 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:41:22,395 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3534 [2021-06-11 20:41:22,396 INFO L480 AbstractCegarLoop]: Abstraction has has 954 places, 2579 transitions, 65759 flow [2021-06-11 20:41:22,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:22,396 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:41:22,396 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] [2021-06-11 20:41:22,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-11 20:41:22,396 INFO L428 AbstractCegarLoop]: === Iteration 64 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:41:22,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:41:22,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1131616681, now seen corresponding path program 16 times [2021-06-11 20:41:22,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:41:22,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805887130] [2021-06-11 20:41:22,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:41:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:41:22,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:22,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:41:22,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:22,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:41:22,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:22,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:22,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:22,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:41:22,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:22,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:41:22,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:22,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:22,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:22,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:41:22,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:22,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:41:22,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:22,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:22,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:22,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:22,543 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:41:22,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:41:22,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:41:22,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:41:22,569 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:41:22,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:41:22,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805887130] [2021-06-11 20:41:22,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:41:22,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:41:22,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351443762] [2021-06-11 20:41:22,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:41:22,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:41:22,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:41:22,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:41:22,573 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2021-06-11 20:41:22,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 954 places, 2579 transitions, 65759 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:22,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:41:22,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2021-06-11 20:41:22,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:41:28,759 INFO L129 PetriNetUnfolder]: 3973/7944 cut-off events. [2021-06-11 20:41:28,759 INFO L130 PetriNetUnfolder]: For 330856/330864 co-relation queries the response was YES. [2021-06-11 20:41:29,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85598 conditions, 7944 events. 3973/7944 cut-off events. For 330856/330864 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 68088 event pairs, 325 based on Foata normal form. 9/6979 useless extension candidates. Maximal degree in co-relation 85266. Up to 4462 conditions per place. [2021-06-11 20:41:29,052 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 1916 selfloop transitions, 700 changer transitions 0/2634 dead transitions. [2021-06-11 20:41:29,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 979 places, 2634 transitions, 72530 flow [2021-06-11 20:41:29,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-11 20:41:29,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-06-11 20:41:29,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1403 transitions. [2021-06-11 20:41:29,053 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5740589198036007 [2021-06-11 20:41:29,053 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1403 transitions. [2021-06-11 20:41:29,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1403 transitions. [2021-06-11 20:41:29,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:41:29,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1403 transitions. [2021-06-11 20:41:29,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 53.96153846153846) internal successors, (1403), 26 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:29,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 94.0) internal successors, (2538), 27 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:29,056 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 94.0) internal successors, (2538), 27 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:29,056 INFO L185 Difference]: Start difference. First operand has 954 places, 2579 transitions, 65759 flow. Second operand 26 states and 1403 transitions. [2021-06-11 20:41:29,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 979 places, 2634 transitions, 72530 flow [2021-06-11 20:41:32,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 958 places, 2634 transitions, 71865 flow, removed 4 selfloop flow, removed 21 redundant places. [2021-06-11 20:41:32,751 INFO L241 Difference]: Finished difference. Result has 961 places, 2596 transitions, 67000 flow [2021-06-11 20:41:32,753 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=65094, PETRI_DIFFERENCE_MINUEND_PLACES=933, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=684, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1891, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=67000, PETRI_PLACES=961, PETRI_TRANSITIONS=2596} [2021-06-11 20:41:32,753 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 908 predicate places. [2021-06-11 20:41:32,753 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:41:32,753 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 961 places, 2596 transitions, 67000 flow [2021-06-11 20:41:32,754 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 961 places, 2596 transitions, 67000 flow [2021-06-11 20:41:32,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 961 places, 2596 transitions, 67000 flow [2021-06-11 20:41:35,087 INFO L129 PetriNetUnfolder]: 3336/6978 cut-off events. [2021-06-11 20:41:35,087 INFO L130 PetriNetUnfolder]: For 220966/221219 co-relation queries the response was YES. [2021-06-11 20:41:35,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69697 conditions, 6978 events. 3336/6978 cut-off events. For 220966/221219 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 62330 event pairs, 79 based on Foata normal form. 53/5992 useless extension candidates. Maximal degree in co-relation 69360. Up to 2140 conditions per place. [2021-06-11 20:41:35,326 INFO L151 LiptonReduction]: Number of co-enabled transitions 14742 [2021-06-11 20:41:35,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:35,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 20:41:37,585 INFO L163 LiptonReduction]: Checked pairs total: 1 [2021-06-11 20:41:37,585 INFO L165 LiptonReduction]: Total number of compositions: 1 [2021-06-11 20:41:37,585 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4832 [2021-06-11 20:41:37,585 INFO L480 AbstractCegarLoop]: Abstraction has has 961 places, 2596 transitions, 67000 flow [2021-06-11 20:41:37,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:37,585 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:41:37,586 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] [2021-06-11 20:41:37,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-11 20:41:37,586 INFO L428 AbstractCegarLoop]: === Iteration 65 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:41:37,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:41:37,586 INFO L82 PathProgramCache]: Analyzing trace with hash 513519785, now seen corresponding path program 17 times [2021-06-11 20:41:37,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:41:37,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974479245] [2021-06-11 20:41:37,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:41:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:41:37,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:37,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:41:37,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:37,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:41:37,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:37,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:37,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:37,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:41:37,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:37,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:41:37,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:37,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:37,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:37,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:37,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:37,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:41:37,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:37,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:37,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:37,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:37,717 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:41:37,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:41:37,753 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:41:37,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:41:37,774 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:41:37,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:41:37,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974479245] [2021-06-11 20:41:37,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:41:37,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:41:37,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300466847] [2021-06-11 20:41:37,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:41:37,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:41:37,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:41:37,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:41:37,777 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:41:37,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 961 places, 2596 transitions, 67000 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:37,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:41:37,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:41:37,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:41:44,449 INFO L129 PetriNetUnfolder]: 3991/7998 cut-off events. [2021-06-11 20:41:44,449 INFO L130 PetriNetUnfolder]: For 332755/332759 co-relation queries the response was YES. [2021-06-11 20:41:44,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86546 conditions, 7998 events. 3991/7998 cut-off events. For 332755/332759 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 68850 event pairs, 316 based on Foata normal form. 5/7019 useless extension candidates. Maximal degree in co-relation 86211. Up to 4409 conditions per place. [2021-06-11 20:41:44,681 INFO L132 encePairwiseOnDemand]: 78/95 looper letters, 1850 selfloop transitions, 787 changer transitions 0/2655 dead transitions. [2021-06-11 20:41:44,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 990 places, 2655 transitions, 73669 flow [2021-06-11 20:41:44,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-11 20:41:44,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-06-11 20:41:44,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1604 transitions. [2021-06-11 20:41:44,683 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5628070175438596 [2021-06-11 20:41:44,683 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1604 transitions. [2021-06-11 20:41:44,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1604 transitions. [2021-06-11 20:41:44,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:41:44,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1604 transitions. [2021-06-11 20:41:44,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.46666666666667) internal successors, (1604), 30 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:44,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 95.0) internal successors, (2945), 31 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:44,685 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 95.0) internal successors, (2945), 31 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:44,685 INFO L185 Difference]: Start difference. First operand has 961 places, 2596 transitions, 67000 flow. Second operand 30 states and 1604 transitions. [2021-06-11 20:41:44,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 990 places, 2655 transitions, 73669 flow [2021-06-11 20:41:48,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 975 places, 2655 transitions, 72964 flow, removed 116 selfloop flow, removed 15 redundant places. [2021-06-11 20:41:48,435 INFO L241 Difference]: Finished difference. Result has 978 places, 2614 transitions, 68230 flow [2021-06-11 20:41:48,436 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=66295, PETRI_DIFFERENCE_MINUEND_PLACES=946, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=770, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1823, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=68230, PETRI_PLACES=978, PETRI_TRANSITIONS=2614} [2021-06-11 20:41:48,436 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 925 predicate places. [2021-06-11 20:41:48,436 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:41:48,436 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 978 places, 2614 transitions, 68230 flow [2021-06-11 20:41:48,437 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 978 places, 2614 transitions, 68230 flow [2021-06-11 20:41:48,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 978 places, 2614 transitions, 68230 flow [2021-06-11 20:41:50,843 INFO L129 PetriNetUnfolder]: 3347/7037 cut-off events. [2021-06-11 20:41:50,843 INFO L130 PetriNetUnfolder]: For 227234/227578 co-relation queries the response was YES. [2021-06-11 20:41:50,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70748 conditions, 7037 events. 3347/7037 cut-off events. For 227234/227578 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 63145 event pairs, 72 based on Foata normal form. 39/6016 useless extension candidates. Maximal degree in co-relation 70407. Up to 2131 conditions per place. [2021-06-11 20:41:51,090 INFO L151 LiptonReduction]: Number of co-enabled transitions 14962 [2021-06-11 20:41:52,229 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:41:52,229 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:41:52,230 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3794 [2021-06-11 20:41:52,230 INFO L480 AbstractCegarLoop]: Abstraction has has 978 places, 2614 transitions, 68230 flow [2021-06-11 20:41:52,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:52,230 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:41:52,230 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] [2021-06-11 20:41:52,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-11 20:41:52,230 INFO L428 AbstractCegarLoop]: === Iteration 66 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:41:52,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:41:52,230 INFO L82 PathProgramCache]: Analyzing trace with hash -256377284, now seen corresponding path program 1 times [2021-06-11 20:41:52,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:41:52,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855570805] [2021-06-11 20:41:52,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:41:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:41:52,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:52,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:41:52,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:52,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:41:52,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:52,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:52,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:52,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:41:52,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:52,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:41:52,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:52,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:41:52,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:52,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:52,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:52,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:52,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:52,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:52,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:52,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:41:52,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:41:52,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:41:52,358 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:41:52,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:41:52,377 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:41:52,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:41:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:41:52,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855570805] [2021-06-11 20:41:52,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:41:52,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:41:52,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88212241] [2021-06-11 20:41:52,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:41:52,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:41:52,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:41:52,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:41:52,382 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:41:52,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 978 places, 2614 transitions, 68230 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:52,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:41:52,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:41:52,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:41:57,776 INFO L129 PetriNetUnfolder]: 4068/8133 cut-off events. [2021-06-11 20:41:57,776 INFO L130 PetriNetUnfolder]: For 348126/348130 co-relation queries the response was YES. [2021-06-11 20:41:58,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89163 conditions, 8133 events. 4068/8133 cut-off events. For 348126/348130 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 70079 event pairs, 375 based on Foata normal form. 5/7146 useless extension candidates. Maximal degree in co-relation 88824. Up to 5026 conditions per place. [2021-06-11 20:41:58,233 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2326 selfloop transitions, 351 changer transitions 6/2701 dead transitions. [2021-06-11 20:41:58,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 997 places, 2701 transitions, 75670 flow [2021-06-11 20:41:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-11 20:41:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-06-11 20:41:58,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1091 transitions. [2021-06-11 20:41:58,235 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5742105263157895 [2021-06-11 20:41:58,235 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1091 transitions. [2021-06-11 20:41:58,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1091 transitions. [2021-06-11 20:41:58,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:41:58,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1091 transitions. [2021-06-11 20:41:58,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 54.55) internal successors, (1091), 20 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:58,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 95.0) internal successors, (1995), 21 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:58,237 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 95.0) internal successors, (1995), 21 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:41:58,237 INFO L185 Difference]: Start difference. First operand has 978 places, 2614 transitions, 68230 flow. Second operand 20 states and 1091 transitions. [2021-06-11 20:41:58,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 997 places, 2701 transitions, 75670 flow [2021-06-11 20:42:01,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 976 places, 2701 transitions, 74677 flow, removed 60 selfloop flow, removed 21 redundant places. [2021-06-11 20:42:01,798 INFO L241 Difference]: Finished difference. Result has 988 places, 2665 transitions, 69263 flow [2021-06-11 20:42:01,799 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=67302, PETRI_DIFFERENCE_MINUEND_PLACES=957, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=69263, PETRI_PLACES=988, PETRI_TRANSITIONS=2665} [2021-06-11 20:42:01,799 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 935 predicate places. [2021-06-11 20:42:01,799 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:42:01,799 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 988 places, 2665 transitions, 69263 flow [2021-06-11 20:42:01,799 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 988 places, 2665 transitions, 69263 flow [2021-06-11 20:42:01,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 984 places, 2665 transitions, 69263 flow [2021-06-11 20:42:04,065 INFO L129 PetriNetUnfolder]: 3439/7195 cut-off events. [2021-06-11 20:42:04,065 INFO L130 PetriNetUnfolder]: For 239949/240213 co-relation queries the response was YES. [2021-06-11 20:42:04,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73192 conditions, 7195 events. 3439/7195 cut-off events. For 239949/240213 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 64644 event pairs, 87 based on Foata normal form. 54/6169 useless extension candidates. Maximal degree in co-relation 72870. Up to 2175 conditions per place. [2021-06-11 20:42:04,714 INFO L151 LiptonReduction]: Number of co-enabled transitions 15128 [2021-06-11 20:42:05,622 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:42:05,622 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:42:05,622 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3823 [2021-06-11 20:42:05,622 INFO L480 AbstractCegarLoop]: Abstraction has has 984 places, 2665 transitions, 69263 flow [2021-06-11 20:42:05,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:05,622 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:42:05,622 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] [2021-06-11 20:42:05,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-11 20:42:05,622 INFO L428 AbstractCegarLoop]: === Iteration 67 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:42:05,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:42:05,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1555780058, now seen corresponding path program 2 times [2021-06-11 20:42:05,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:42:05,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805280230] [2021-06-11 20:42:05,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:42:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:42:05,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:05,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:42:05,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:05,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:42:05,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:05,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:05,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:05,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:42:05,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:05,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:42:05,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:05,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:42:05,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:05,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:05,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:05,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:05,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:05,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:05,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:05,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:05,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:05,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:42:05,763 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:42:05,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:42:05,787 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:42:05,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:05,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:42:05,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805280230] [2021-06-11 20:42:05,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:42:05,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:42:05,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73274000] [2021-06-11 20:42:05,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:42:05,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:42:05,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:42:05,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:42:05,793 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:42:05,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 984 places, 2665 transitions, 69263 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:05,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:42:05,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:42:05,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:42:11,949 INFO L129 PetriNetUnfolder]: 4108/8213 cut-off events. [2021-06-11 20:42:11,949 INFO L130 PetriNetUnfolder]: For 367493/367495 co-relation queries the response was YES. [2021-06-11 20:42:12,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91265 conditions, 8213 events. 4108/8213 cut-off events. For 367493/367495 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 70821 event pairs, 391 based on Foata normal form. 3/7205 useless extension candidates. Maximal degree in co-relation 90941. Up to 5095 conditions per place. [2021-06-11 20:42:12,175 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2371 selfloop transitions, 345 changer transitions 6/2740 dead transitions. [2021-06-11 20:42:12,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1002 places, 2740 transitions, 76663 flow [2021-06-11 20:42:12,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-11 20:42:12,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-06-11 20:42:12,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1011 transitions. [2021-06-11 20:42:12,190 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5601108033240997 [2021-06-11 20:42:12,190 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1011 transitions. [2021-06-11 20:42:12,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1011 transitions. [2021-06-11 20:42:12,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:42:12,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1011 transitions. [2021-06-11 20:42:12,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 53.21052631578947) internal successors, (1011), 19 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:12,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 95.0) internal successors, (1900), 20 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:12,192 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 95.0) internal successors, (1900), 20 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:12,192 INFO L185 Difference]: Start difference. First operand has 984 places, 2665 transitions, 69263 flow. Second operand 19 states and 1011 transitions. [2021-06-11 20:42:12,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1002 places, 2740 transitions, 76663 flow [2021-06-11 20:42:16,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 991 places, 2740 transitions, 76121 flow, removed 48 selfloop flow, removed 11 redundant places. [2021-06-11 20:42:16,066 INFO L241 Difference]: Finished difference. Result has 998 places, 2707 transitions, 70724 flow [2021-06-11 20:42:16,067 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=68751, PETRI_DIFFERENCE_MINUEND_PLACES=973, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=70724, PETRI_PLACES=998, PETRI_TRANSITIONS=2707} [2021-06-11 20:42:16,067 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 945 predicate places. [2021-06-11 20:42:16,067 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:42:16,067 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 998 places, 2707 transitions, 70724 flow [2021-06-11 20:42:16,067 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 998 places, 2707 transitions, 70724 flow [2021-06-11 20:42:16,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 994 places, 2707 transitions, 70724 flow [2021-06-11 20:42:16,899 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][105], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< 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1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:42:16,899 INFO L384 tUnfolder$Statistics]: this new event has 18 ancestors and is cut-off event [2021-06-11 20:42:16,899 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 20:42:16,899 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 20:42:16,899 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 20:42:16,899 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([177] L28-->L30: Formula: (and 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(<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_7 temp_4)), Black: 2495#(and (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 2981#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_10 temp_4) (<= x_6 temp_5)), Black: 2984#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 3020#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), 3031#true, Black: 3552#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 3554#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3541#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 3558#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= y_1 y_7)), Black: 3562#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (= x_6 x_0)), Black: 3548#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 3534#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:42:16,900 INFO L384 tUnfolder$Statistics]: this new event has 18 ancestors and is cut-off event [2021-06-11 20:42:16,900 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 20:42:16,900 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 20:42:16,900 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-06-11 20:42:18,876 INFO L129 PetriNetUnfolder]: 3513/7385 cut-off events. [2021-06-11 20:42:18,876 INFO L130 PetriNetUnfolder]: For 251177/251717 co-relation queries the response was YES. [2021-06-11 20:42:19,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75062 conditions, 7385 events. 3513/7385 cut-off events. For 251177/251717 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 66799 event pairs, 61 based on Foata normal form. 66/6341 useless extension candidates. Maximal degree in co-relation 74737. Up to 2223 conditions per place. [2021-06-11 20:42:19,196 INFO L151 LiptonReduction]: Number of co-enabled transitions 15256 [2021-06-11 20:42:20,217 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:42:20,217 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:42:20,217 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4150 [2021-06-11 20:42:20,217 INFO L480 AbstractCegarLoop]: Abstraction has has 994 places, 2707 transitions, 70724 flow [2021-06-11 20:42:20,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:20,218 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:42:20,218 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] [2021-06-11 20:42:20,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-11 20:42:20,218 INFO L428 AbstractCegarLoop]: === Iteration 68 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:42:20,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:42:20,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1239369186, now seen corresponding path program 3 times [2021-06-11 20:42:20,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:42:20,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7253404] [2021-06-11 20:42:20,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:42:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:42:20,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:20,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:42:20,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:20,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:42:20,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:20,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:20,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:20,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:42:20,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:20,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:42:20,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:20,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:20,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:20,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:20,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:20,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:20,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:20,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:20,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:20,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:20,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:20,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:42:20,400 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:42:20,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:42:20,424 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:42:20,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:42:20,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7253404] [2021-06-11 20:42:20,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:42:20,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:42:20,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810169817] [2021-06-11 20:42:20,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:42:20,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:42:20,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:42:20,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:42:20,429 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:42:20,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 994 places, 2707 transitions, 70724 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:20,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:42:20,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:42:20,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:42:26,551 INFO L129 PetriNetUnfolder]: 4123/8250 cut-off events. [2021-06-11 20:42:26,551 INFO L130 PetriNetUnfolder]: For 381963/381965 co-relation queries the response was YES. [2021-06-11 20:42:26,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92447 conditions, 8250 events. 4123/8250 cut-off events. For 381963/381965 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 71351 event pairs, 390 based on Foata normal form. 3/7242 useless extension candidates. Maximal degree in co-relation 92120. Up to 5146 conditions per place. [2021-06-11 20:42:26,784 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2406 selfloop transitions, 337 changer transitions 5/2766 dead transitions. [2021-06-11 20:42:26,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1014 places, 2766 transitions, 77598 flow [2021-06-11 20:42:26,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-11 20:42:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-06-11 20:42:26,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1113 transitions. [2021-06-11 20:42:26,785 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5578947368421052 [2021-06-11 20:42:26,785 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1113 transitions. [2021-06-11 20:42:26,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1113 transitions. [2021-06-11 20:42:26,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:42:26,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1113 transitions. [2021-06-11 20:42:26,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 53.0) internal successors, (1113), 21 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:26,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 95.0) internal successors, (2090), 22 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:26,787 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 95.0) internal successors, (2090), 22 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:26,787 INFO L185 Difference]: Start difference. First operand has 994 places, 2707 transitions, 70724 flow. Second operand 21 states and 1113 transitions. [2021-06-11 20:42:26,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1014 places, 2766 transitions, 77598 flow [2021-06-11 20:42:30,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1006 places, 2766 transitions, 76742 flow, removed 297 selfloop flow, removed 8 redundant places. [2021-06-11 20:42:30,801 INFO L241 Difference]: Finished difference. Result has 1013 places, 2739 transitions, 71471 flow [2021-06-11 20:42:30,802 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=69868, PETRI_DIFFERENCE_MINUEND_PLACES=986, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=71471, PETRI_PLACES=1013, PETRI_TRANSITIONS=2739} [2021-06-11 20:42:30,802 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 960 predicate places. [2021-06-11 20:42:30,802 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:42:30,803 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1013 places, 2739 transitions, 71471 flow [2021-06-11 20:42:30,803 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1013 places, 2739 transitions, 71471 flow [2021-06-11 20:42:30,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1009 places, 2739 transitions, 71471 flow [2021-06-11 20:42:32,063 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([182] L62-->thread5EXIT: Formula: (= (+ v_temp_10_23 1) v_y_7_24) InVars {temp_10=v_temp_10_23} OutVars{temp_10=v_temp_10_23, y_7=v_y_7_24} AuxVars[] AssignedVars[y_7][2735], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 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event has 19 ancestors and is cut-off event [2021-06-11 20:42:32,063 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:42:32,063 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:42:32,063 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:42:32,063 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([179] L73-->thread6EXIT: Formula: (= (+ v_temp_11_21 1) v_x_6_20) InVars {temp_11=v_temp_11_21} OutVars{temp_11=v_temp_11_21, x_6=v_x_6_20} AuxVars[] AssignedVars[x_6][2261], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= 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x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:42:32,063 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:42:32,063 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:42:32,064 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:42:32,064 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:42:32,064 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][100], [Black: 2544#(and (<= temp_5 x_6) (<= (+ 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(<= x_6 (+ x_0 1))), Black: 918#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 3498#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1980#(and (<= x_0 x_6) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0) (<= (+ temp_5 1) x_6)), Black: 1966#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 3486#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), 1992#true, Black: 3487#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), 3530#true, Black: 2483#(and (<= x_0 x_6) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 2503#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 2489#(and (<= temp_5 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temp_5 x_6) (<= temp_10 temp_4) (<= x_6 temp_5)), Black: 2984#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 3020#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), 3031#true, Black: 3552#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 3554#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3548#(and (<= (+ temp_11 1) x_0) (<= (+ x_6 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 3534#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), 3571#true, Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:42:32,064 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:42:32,064 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:42:32,064 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:42:32,064 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:42:33,481 INFO L129 PetriNetUnfolder]: 3564/7454 cut-off events. [2021-06-11 20:42:33,481 INFO L130 PetriNetUnfolder]: For 259051/259369 co-relation queries the response was YES. [2021-06-11 20:42:33,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76150 conditions, 7454 events. 3564/7454 cut-off events. For 259051/259369 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 67180 event pairs, 69 based on Foata normal form. 41/6371 useless extension candidates. Maximal degree in co-relation 75821. Up to 2257 conditions per place. [2021-06-11 20:42:33,980 INFO L151 LiptonReduction]: Number of co-enabled transitions 15328 [2021-06-11 20:42:35,071 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:42:35,072 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:42:35,072 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4270 [2021-06-11 20:42:35,072 INFO L480 AbstractCegarLoop]: Abstraction has has 1009 places, 2739 transitions, 71471 flow [2021-06-11 20:42:35,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:35,072 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:42:35,072 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] [2021-06-11 20:42:35,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-11 20:42:35,073 INFO L428 AbstractCegarLoop]: === Iteration 69 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:42:35,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:42:35,073 INFO L82 PathProgramCache]: Analyzing trace with hash 2140516622, now seen corresponding path program 4 times [2021-06-11 20:42:35,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:42:35,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638659460] [2021-06-11 20:42:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:42:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:42:35,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:35,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:42:35,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:35,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:42:35,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:35,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:35,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:35,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:42:35,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:35,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:42:35,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:35,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:35,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:35,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:35,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:35,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:35,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:35,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:35,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:35,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:42:35,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:35,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:42:35,218 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:42:35,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:42:35,237 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:42:35,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:42:35,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638659460] [2021-06-11 20:42:35,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:42:35,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:42:35,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437346731] [2021-06-11 20:42:35,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:42:35,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:42:35,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:42:35,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:42:35,243 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:42:35,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1009 places, 2739 transitions, 71471 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:35,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:42:35,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:42:35,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:42:41,441 INFO L129 PetriNetUnfolder]: 4125/8263 cut-off events. [2021-06-11 20:42:41,441 INFO L130 PetriNetUnfolder]: For 386597/386601 co-relation queries the response was YES. [2021-06-11 20:42:41,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92725 conditions, 8263 events. 4125/8263 cut-off events. For 386597/386601 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 71615 event pairs, 382 based on Foata normal form. 5/7256 useless extension candidates. Maximal degree in co-relation 92378. Up to 5119 conditions per place. [2021-06-11 20:42:41,688 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2375 selfloop transitions, 375 changer transitions 7/2775 dead transitions. [2021-06-11 20:42:41,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1032 places, 2775 transitions, 77846 flow [2021-06-11 20:42:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-11 20:42:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-06-11 20:42:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1286 transitions. [2021-06-11 20:42:41,690 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5640350877192982 [2021-06-11 20:42:41,690 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1286 transitions. [2021-06-11 20:42:41,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1286 transitions. [2021-06-11 20:42:41,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:42:41,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1286 transitions. [2021-06-11 20:42:41,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 53.583333333333336) internal successors, (1286), 24 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:41,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 95.0) internal successors, (2375), 25 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:41,692 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 95.0) internal successors, (2375), 25 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:41,692 INFO L185 Difference]: Start difference. First operand has 1009 places, 2739 transitions, 71471 flow. Second operand 24 states and 1286 transitions. [2021-06-11 20:42:41,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1032 places, 2775 transitions, 77846 flow [2021-06-11 20:42:45,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1020 places, 2775 transitions, 76933 flow, removed 303 selfloop flow, removed 12 redundant places. [2021-06-11 20:42:45,618 INFO L241 Difference]: Finished difference. Result has 1027 places, 2746 transitions, 71540 flow [2021-06-11 20:42:45,619 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=70616, PETRI_DIFFERENCE_MINUEND_PLACES=997, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=71540, PETRI_PLACES=1027, PETRI_TRANSITIONS=2746} [2021-06-11 20:42:45,619 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 974 predicate places. [2021-06-11 20:42:45,619 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:42:45,620 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1027 places, 2746 transitions, 71540 flow [2021-06-11 20:42:45,620 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1027 places, 2746 transitions, 71540 flow [2021-06-11 20:42:45,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1023 places, 2746 transitions, 71540 flow [2021-06-11 20:42:48,274 INFO L129 PetriNetUnfolder]: 3564/7481 cut-off events. [2021-06-11 20:42:48,274 INFO L130 PetriNetUnfolder]: For 259417/259699 co-relation queries the response was YES. [2021-06-11 20:42:48,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76185 conditions, 7481 events. 3564/7481 cut-off events. For 259417/259699 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 67956 event pairs, 62 based on Foata normal form. 39/6392 useless extension candidates. Maximal degree in co-relation 75851. Up to 2244 conditions per place. [2021-06-11 20:42:48,590 INFO L151 LiptonReduction]: Number of co-enabled transitions 15380 [2021-06-11 20:42:49,908 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:42:49,908 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:42:49,909 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4290 [2021-06-11 20:42:49,909 INFO L480 AbstractCegarLoop]: Abstraction has has 1023 places, 2746 transitions, 71540 flow [2021-06-11 20:42:49,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:49,909 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:42:49,909 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] [2021-06-11 20:42:49,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-11 20:42:49,909 INFO L428 AbstractCegarLoop]: === Iteration 70 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:42:49,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:42:49,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1136731020, now seen corresponding path program 5 times [2021-06-11 20:42:49,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:42:49,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145284685] [2021-06-11 20:42:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:42:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:42:49,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:49,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:42:49,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:49,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:42:49,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:49,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:49,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:49,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:42:49,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:49,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:42:49,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:49,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:42:49,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:49,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:49,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:49,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:49,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:49,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:50,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:50,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:50,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:42:50,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:42:50,046 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:42:50,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:42:50,063 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:42:50,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:42:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:42:50,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145284685] [2021-06-11 20:42:50,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:42:50,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:42:50,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258837873] [2021-06-11 20:42:50,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:42:50,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:42:50,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:42:50,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:42:50,067 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:42:50,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1023 places, 2746 transitions, 71540 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:50,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:42:50,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:42:50,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:42:55,914 INFO L129 PetriNetUnfolder]: 4112/8239 cut-off events. [2021-06-11 20:42:55,915 INFO L130 PetriNetUnfolder]: For 397062/397072 co-relation queries the response was YES. [2021-06-11 20:42:56,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93237 conditions, 8239 events. 4112/8239 cut-off events. For 397062/397072 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 71339 event pairs, 383 based on Foata normal form. 11/7249 useless extension candidates. Maximal degree in co-relation 92901. Up to 5119 conditions per place. [2021-06-11 20:42:56,407 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2388 selfloop transitions, 378 changer transitions 0/2784 dead transitions. [2021-06-11 20:42:56,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1041 places, 2784 transitions, 78238 flow [2021-06-11 20:42:56,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-11 20:42:56,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-06-11 20:42:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1027 transitions. [2021-06-11 20:42:56,422 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5689750692520775 [2021-06-11 20:42:56,422 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1027 transitions. [2021-06-11 20:42:56,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1027 transitions. [2021-06-11 20:42:56,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:42:56,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1027 transitions. [2021-06-11 20:42:56,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 54.05263157894737) internal successors, (1027), 19 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:56,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 95.0) internal successors, (1900), 20 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:56,425 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 95.0) internal successors, (1900), 20 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:42:56,425 INFO L185 Difference]: Start difference. First operand has 1023 places, 2746 transitions, 71540 flow. Second operand 19 states and 1027 transitions. [2021-06-11 20:42:56,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1041 places, 2784 transitions, 78238 flow [2021-06-11 20:43:00,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1028 places, 2784 transitions, 77598 flow, removed 22 selfloop flow, removed 13 redundant places. [2021-06-11 20:43:00,704 INFO L241 Difference]: Finished difference. Result has 1034 places, 2757 transitions, 72174 flow [2021-06-11 20:43:00,706 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=70904, PETRI_DIFFERENCE_MINUEND_PLACES=1010, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=72174, PETRI_PLACES=1034, PETRI_TRANSITIONS=2757} [2021-06-11 20:43:00,706 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 981 predicate places. [2021-06-11 20:43:00,706 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:43:00,706 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1034 places, 2757 transitions, 72174 flow [2021-06-11 20:43:00,706 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1034 places, 2757 transitions, 72174 flow [2021-06-11 20:43:00,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1034 places, 2757 transitions, 72174 flow [2021-06-11 20:43:03,203 INFO L129 PetriNetUnfolder]: 3572/7499 cut-off events. [2021-06-11 20:43:03,203 INFO L130 PetriNetUnfolder]: For 267131/267382 co-relation queries the response was YES. [2021-06-11 20:43:03,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76959 conditions, 7499 events. 3572/7499 cut-off events. For 267131/267382 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 67891 event pairs, 88 based on Foata normal form. 41/6413 useless extension candidates. Maximal degree in co-relation 76593. Up to 2263 conditions per place. [2021-06-11 20:43:03,826 INFO L151 LiptonReduction]: Number of co-enabled transitions 15478 [2021-06-11 20:43:04,800 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:43:04,800 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:43:04,800 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4094 [2021-06-11 20:43:04,801 INFO L480 AbstractCegarLoop]: Abstraction has has 1034 places, 2757 transitions, 72174 flow [2021-06-11 20:43:04,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:04,801 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:43:04,801 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 20:43:04,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-11 20:43:04,801 INFO L428 AbstractCegarLoop]: === Iteration 71 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:43:04,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:43:04,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1527420468, now seen corresponding path program 6 times [2021-06-11 20:43:04,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:43:04,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409467348] [2021-06-11 20:43:04,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:43:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:43:04,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:04,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:43:04,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:04,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:43:04,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:04,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:04,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:04,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:43:04,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:04,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:43:04,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:04,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:43:04,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:04,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:04,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:04,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:04,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:04,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:04,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:04,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:04,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:04,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:43:04,932 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:43:04,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:43:04,949 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:43:04,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:43:04,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409467348] [2021-06-11 20:43:04,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:43:04,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:43:04,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094995131] [2021-06-11 20:43:04,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:43:04,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:43:04,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:43:04,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:43:04,953 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:43:04,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1034 places, 2757 transitions, 72174 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:04,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:43:04,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:43:04,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:43:11,067 INFO L129 PetriNetUnfolder]: 4114/8246 cut-off events. [2021-06-11 20:43:11,067 INFO L130 PetriNetUnfolder]: For 407380/407390 co-relation queries the response was YES. [2021-06-11 20:43:11,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93635 conditions, 8246 events. 4114/8246 cut-off events. For 407380/407390 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 71432 event pairs, 377 based on Foata normal form. 11/7254 useless extension candidates. Maximal degree in co-relation 93271. Up to 5087 conditions per place. [2021-06-11 20:43:11,285 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2385 selfloop transitions, 381 changer transitions 5/2789 dead transitions. [2021-06-11 20:43:11,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1054 places, 2789 transitions, 78607 flow [2021-06-11 20:43:11,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-11 20:43:11,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-06-11 20:43:11,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1128 transitions. [2021-06-11 20:43:11,287 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5654135338345865 [2021-06-11 20:43:11,287 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1128 transitions. [2021-06-11 20:43:11,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1128 transitions. [2021-06-11 20:43:11,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:43:11,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1128 transitions. [2021-06-11 20:43:11,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 53.714285714285715) internal successors, (1128), 21 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:11,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 95.0) internal successors, (2090), 22 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:11,288 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 95.0) internal successors, (2090), 22 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:11,288 INFO L185 Difference]: Start difference. First operand has 1034 places, 2757 transitions, 72174 flow. Second operand 21 states and 1128 transitions. [2021-06-11 20:43:11,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1054 places, 2789 transitions, 78607 flow [2021-06-11 20:43:15,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1043 places, 2789 transitions, 77490 flow, removed 192 selfloop flow, removed 11 redundant places. [2021-06-11 20:43:15,363 INFO L241 Difference]: Finished difference. Result has 1044 places, 2752 transitions, 71762 flow [2021-06-11 20:43:15,364 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=71057, PETRI_DIFFERENCE_MINUEND_PLACES=1023, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=381, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=71762, PETRI_PLACES=1044, PETRI_TRANSITIONS=2752} [2021-06-11 20:43:15,364 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 991 predicate places. [2021-06-11 20:43:15,364 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:43:15,364 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1044 places, 2752 transitions, 71762 flow [2021-06-11 20:43:15,364 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1044 places, 2752 transitions, 71762 flow [2021-06-11 20:43:15,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1038 places, 2752 transitions, 71762 flow [2021-06-11 20:43:17,894 INFO L129 PetriNetUnfolder]: 3563/7475 cut-off events. [2021-06-11 20:43:17,894 INFO L130 PetriNetUnfolder]: For 262105/262350 co-relation queries the response was YES. [2021-06-11 20:43:18,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76603 conditions, 7475 events. 3563/7475 cut-off events. For 262105/262350 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 67583 event pairs, 69 based on Foata normal form. 38/6395 useless extension candidates. Maximal degree in co-relation 76236. Up to 2253 conditions per place. [2021-06-11 20:43:18,547 INFO L151 LiptonReduction]: Number of co-enabled transitions 15444 [2021-06-11 20:43:19,568 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:43:19,569 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:43:19,569 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4205 [2021-06-11 20:43:19,569 INFO L480 AbstractCegarLoop]: Abstraction has has 1038 places, 2752 transitions, 71762 flow [2021-06-11 20:43:19,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:19,569 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:43:19,569 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] [2021-06-11 20:43:19,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-11 20:43:19,569 INFO L428 AbstractCegarLoop]: === Iteration 72 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:43:19,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:43:19,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1210550704, now seen corresponding path program 7 times [2021-06-11 20:43:19,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:43:19,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453190581] [2021-06-11 20:43:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:43:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:43:19,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:19,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:43:19,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:19,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:43:19,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:19,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:19,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:19,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:43:19,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:19,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:43:19,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:19,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:19,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:19,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:19,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:19,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:19,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:19,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:19,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:19,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:19,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:19,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:43:19,710 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:43:19,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:43:19,730 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:43:19,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:43:19,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453190581] [2021-06-11 20:43:19,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:43:19,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:43:19,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974147341] [2021-06-11 20:43:19,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:43:19,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:43:19,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:43:19,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:43:19,734 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:43:19,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1038 places, 2752 transitions, 71762 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:19,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:43:19,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:43:19,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:43:26,491 INFO L129 PetriNetUnfolder]: 4124/8274 cut-off events. [2021-06-11 20:43:26,492 INFO L130 PetriNetUnfolder]: For 404216/404218 co-relation queries the response was YES. [2021-06-11 20:43:26,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93494 conditions, 8274 events. 4124/8274 cut-off events. For 404216/404218 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 71689 event pairs, 393 based on Foata normal form. 3/7264 useless extension candidates. Maximal degree in co-relation 93129. Up to 5152 conditions per place. [2021-06-11 20:43:26,720 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2399 selfloop transitions, 364 changer transitions 0/2781 dead transitions. [2021-06-11 20:43:26,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1059 places, 2781 transitions, 78011 flow [2021-06-11 20:43:26,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-11 20:43:26,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-06-11 20:43:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1172 transitions. [2021-06-11 20:43:26,722 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5607655502392345 [2021-06-11 20:43:26,722 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1172 transitions. [2021-06-11 20:43:26,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1172 transitions. [2021-06-11 20:43:26,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:43:26,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1172 transitions. [2021-06-11 20:43:26,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 53.27272727272727) internal successors, (1172), 22 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:26,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 95.0) internal successors, (2185), 23 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:26,725 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 95.0) internal successors, (2185), 23 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:26,725 INFO L185 Difference]: Start difference. First operand has 1038 places, 2752 transitions, 71762 flow. Second operand 22 states and 1172 transitions. [2021-06-11 20:43:26,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1059 places, 2781 transitions, 78011 flow [2021-06-11 20:43:30,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1033 places, 2781 transitions, 77064 flow, removed 22 selfloop flow, removed 26 redundant places. [2021-06-11 20:43:30,991 INFO L241 Difference]: Finished difference. Result has 1039 places, 2761 transitions, 71956 flow [2021-06-11 20:43:30,993 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=70823, PETRI_DIFFERENCE_MINUEND_PLACES=1012, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=71956, PETRI_PLACES=1039, PETRI_TRANSITIONS=2761} [2021-06-11 20:43:30,994 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 986 predicate places. [2021-06-11 20:43:30,994 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:43:30,994 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1039 places, 2761 transitions, 71956 flow [2021-06-11 20:43:30,994 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1039 places, 2761 transitions, 71956 flow [2021-06-11 20:43:31,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1039 places, 2761 transitions, 71956 flow [2021-06-11 20:43:33,597 INFO L129 PetriNetUnfolder]: 3590/7542 cut-off events. [2021-06-11 20:43:33,597 INFO L130 PetriNetUnfolder]: For 267144/267552 co-relation queries the response was YES. [2021-06-11 20:43:34,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76833 conditions, 7542 events. 3590/7542 cut-off events. For 267144/267552 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 68502 event pairs, 82 based on Foata normal form. 50/6448 useless extension candidates. Maximal degree in co-relation 76467. Up to 2263 conditions per place. [2021-06-11 20:43:34,232 INFO L151 LiptonReduction]: Number of co-enabled transitions 15514 [2021-06-11 20:43:35,237 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:43:35,237 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:43:35,237 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4243 [2021-06-11 20:43:35,237 INFO L480 AbstractCegarLoop]: Abstraction has has 1039 places, 2761 transitions, 71956 flow [2021-06-11 20:43:35,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:35,238 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:43:35,238 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] [2021-06-11 20:43:35,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-11 20:43:35,238 INFO L428 AbstractCegarLoop]: === Iteration 73 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:43:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:43:35,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1543310445, now seen corresponding path program 18 times [2021-06-11 20:43:35,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:43:35,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161881041] [2021-06-11 20:43:35,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:43:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:43:35,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:35,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:43:35,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:35,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:43:35,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:35,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:35,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:35,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:43:35,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:35,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:43:35,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:35,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:43:35,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:35,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:35,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:35,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:43:35,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:35,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:43:35,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:35,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:35,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:35,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:43:35,434 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:43:35,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:43:35,454 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:43:35,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:43:35,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161881041] [2021-06-11 20:43:35,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:43:35,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:43:35,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207716381] [2021-06-11 20:43:35,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:43:35,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:43:35,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:43:35,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:43:35,459 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:43:35,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1039 places, 2761 transitions, 71956 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:35,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:43:35,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:43:35,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:43:40,670 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2021-06-11 20:43:42,293 INFO L129 PetriNetUnfolder]: 4119/8271 cut-off events. [2021-06-11 20:43:42,294 INFO L130 PetriNetUnfolder]: For 404535/404548 co-relation queries the response was YES. [2021-06-11 20:43:42,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93399 conditions, 8271 events. 4119/8271 cut-off events. For 404535/404548 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 71783 event pairs, 381 based on Foata normal form. 13/7275 useless extension candidates. Maximal degree in co-relation 93035. Up to 5018 conditions per place. [2021-06-11 20:43:42,554 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2378 selfloop transitions, 409 changer transitions 0/2805 dead transitions. [2021-06-11 20:43:42,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1065 places, 2805 transitions, 78478 flow [2021-06-11 20:43:42,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-11 20:43:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-06-11 20:43:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1427 transitions. [2021-06-11 20:43:42,556 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5563352826510721 [2021-06-11 20:43:42,556 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1427 transitions. [2021-06-11 20:43:42,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1427 transitions. [2021-06-11 20:43:42,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:43:42,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1427 transitions. [2021-06-11 20:43:42,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 52.851851851851855) internal successors, (1427), 27 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:42,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 95.0) internal successors, (2660), 28 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:42,559 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 95.0) internal successors, (2660), 28 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:42,559 INFO L185 Difference]: Start difference. First operand has 1039 places, 2761 transitions, 71956 flow. Second operand 27 states and 1427 transitions. [2021-06-11 20:43:42,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1065 places, 2805 transitions, 78478 flow [2021-06-11 20:43:46,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1050 places, 2805 transitions, 77445 flow, removed 175 selfloop flow, removed 15 redundant places. [2021-06-11 20:43:46,774 INFO L241 Difference]: Finished difference. Result has 1052 places, 2763 transitions, 71797 flow [2021-06-11 20:43:46,775 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=70945, PETRI_DIFFERENCE_MINUEND_PLACES=1024, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=407, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=71797, PETRI_PLACES=1052, PETRI_TRANSITIONS=2763} [2021-06-11 20:43:46,775 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 999 predicate places. [2021-06-11 20:43:46,776 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:43:46,776 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1052 places, 2763 transitions, 71797 flow [2021-06-11 20:43:46,776 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1052 places, 2763 transitions, 71797 flow [2021-06-11 20:43:46,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1052 places, 2763 transitions, 71797 flow [2021-06-11 20:43:49,368 INFO L129 PetriNetUnfolder]: 3559/7447 cut-off events. [2021-06-11 20:43:49,368 INFO L130 PetriNetUnfolder]: For 262764/263074 co-relation queries the response was YES. [2021-06-11 20:43:49,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76299 conditions, 7447 events. 3559/7447 cut-off events. For 262764/263074 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 67268 event pairs, 90 based on Foata normal form. 48/6371 useless extension candidates. Maximal degree in co-relation 75933. Up to 2266 conditions per place. [2021-06-11 20:43:49,998 INFO L151 LiptonReduction]: Number of co-enabled transitions 15540 [2021-06-11 20:43:51,004 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:43:51,004 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:43:51,004 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4228 [2021-06-11 20:43:51,005 INFO L480 AbstractCegarLoop]: Abstraction has has 1052 places, 2763 transitions, 71797 flow [2021-06-11 20:43:51,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:51,005 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:43:51,005 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] [2021-06-11 20:43:51,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-11 20:43:51,005 INFO L428 AbstractCegarLoop]: === Iteration 74 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:43:51,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:43:51,005 INFO L82 PathProgramCache]: Analyzing trace with hash -47027060, now seen corresponding path program 8 times [2021-06-11 20:43:51,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:43:51,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881833480] [2021-06-11 20:43:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:43:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:43:51,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:51,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:43:51,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:51,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:43:51,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:51,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:51,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:51,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:43:51,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:51,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:43:51,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:51,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:43:51,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:51,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:43:51,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:51,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:51,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:43:51,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:51,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:43:51,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:43:51,113 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:43:51,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:43:51,128 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:43:51,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:43:51,145 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:43:51,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:43:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:43:51,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881833480] [2021-06-11 20:43:51,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:43:51,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-11 20:43:51,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900297034] [2021-06-11 20:43:51,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-11 20:43:51,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:43:51,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-11 20:43:51,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-06-11 20:43:51,148 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:43:51,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1052 places, 2763 transitions, 71797 flow. Second operand has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:51,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:43:51,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:43:51,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:43:57,456 INFO L129 PetriNetUnfolder]: 4114/8244 cut-off events. [2021-06-11 20:43:57,457 INFO L130 PetriNetUnfolder]: For 394430/394432 co-relation queries the response was YES. [2021-06-11 20:43:57,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92965 conditions, 8244 events. 4114/8244 cut-off events. For 394430/394432 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 71300 event pairs, 338 based on Foata normal form. 3/7245 useless extension candidates. Maximal degree in co-relation 92601. Up to 4814 conditions per place. [2021-06-11 20:43:57,689 INFO L132 encePairwiseOnDemand]: 77/95 looper letters, 2184 selfloop transitions, 599 changer transitions 0/2801 dead transitions. [2021-06-11 20:43:57,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1067 places, 2801 transitions, 78277 flow [2021-06-11 20:43:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-11 20:43:57,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-11 20:43:57,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 876 transitions. [2021-06-11 20:43:57,691 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5763157894736842 [2021-06-11 20:43:57,691 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 876 transitions. [2021-06-11 20:43:57,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 876 transitions. [2021-06-11 20:43:57,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:43:57,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 876 transitions. [2021-06-11 20:43:57,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 54.75) internal successors, (876), 16 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:57,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 95.0) internal successors, (1615), 17 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:57,692 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 95.0) internal successors, (1615), 17 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:43:57,692 INFO L185 Difference]: Start difference. First operand has 1052 places, 2763 transitions, 71797 flow. Second operand 16 states and 876 transitions. [2021-06-11 20:43:57,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1067 places, 2801 transitions, 78277 flow [2021-06-11 20:44:01,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1047 places, 2801 transitions, 77559 flow, removed 5 selfloop flow, removed 20 redundant places. [2021-06-11 20:44:01,783 INFO L241 Difference]: Finished difference. Result has 1050 places, 2770 transitions, 72632 flow [2021-06-11 20:44:01,784 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=71079, PETRI_DIFFERENCE_MINUEND_PLACES=1032, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=72632, PETRI_PLACES=1050, PETRI_TRANSITIONS=2770} [2021-06-11 20:44:01,784 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 997 predicate places. [2021-06-11 20:44:01,785 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:44:01,785 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1050 places, 2770 transitions, 72632 flow [2021-06-11 20:44:01,785 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1050 places, 2770 transitions, 72632 flow [2021-06-11 20:44:01,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1050 places, 2770 transitions, 72632 flow [2021-06-11 20:44:04,320 INFO L129 PetriNetUnfolder]: 3518/7415 cut-off events. [2021-06-11 20:44:04,321 INFO L130 PetriNetUnfolder]: For 272139/272461 co-relation queries the response was YES. [2021-06-11 20:44:04,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76614 conditions, 7415 events. 3518/7415 cut-off events. For 272139/272461 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 67353 event pairs, 85 based on Foata normal form. 52/6377 useless extension candidates. Maximal degree in co-relation 76245. Up to 2233 conditions per place. [2021-06-11 20:44:04,945 INFO L151 LiptonReduction]: Number of co-enabled transitions 15596 [2021-06-11 20:44:05,971 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:44:05,972 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:44:05,972 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4187 [2021-06-11 20:44:05,972 INFO L480 AbstractCegarLoop]: Abstraction has has 1050 places, 2770 transitions, 72632 flow [2021-06-11 20:44:05,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 49.25) internal successors, (591), 12 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:05,972 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:44:05,972 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] [2021-06-11 20:44:05,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-11 20:44:05,972 INFO L428 AbstractCegarLoop]: === Iteration 75 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:44:05,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:44:05,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1904574091, now seen corresponding path program 19 times [2021-06-11 20:44:05,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:44:05,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866625019] [2021-06-11 20:44:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:44:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:44:05,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:05,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:44:05,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:05,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:44:05,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:05,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:06,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:06,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:44:06,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:06,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:44:06,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:06,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:06,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:06,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:44:06,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:06,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:44:06,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:06,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:44:06,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:06,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:06,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:06,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:44:06,141 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:44:06,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:44:06,165 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:44:06,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:44:06,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866625019] [2021-06-11 20:44:06,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:44:06,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:44:06,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612881360] [2021-06-11 20:44:06,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:44:06,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:44:06,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:44:06,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:44:06,170 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:44:06,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1050 places, 2770 transitions, 72632 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:06,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:44:06,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:44:06,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:44:13,011 INFO L129 PetriNetUnfolder]: 4131/8315 cut-off events. [2021-06-11 20:44:13,012 INFO L130 PetriNetUnfolder]: For 399298/399300 co-relation queries the response was YES. [2021-06-11 20:44:13,468 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93819 conditions, 8315 events. 4131/8315 cut-off events. For 399298/399300 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 72307 event pairs, 370 based on Foata normal form. 3/7298 useless extension candidates. Maximal degree in co-relation 93452. Up to 4747 conditions per place. [2021-06-11 20:44:13,518 INFO L132 encePairwiseOnDemand]: 78/95 looper letters, 2119 selfloop transitions, 673 changer transitions 0/2810 dead transitions. [2021-06-11 20:44:13,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1078 places, 2810 transitions, 79202 flow [2021-06-11 20:44:13,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-11 20:44:13,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-06-11 20:44:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1539 transitions. [2021-06-11 20:44:13,520 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5586206896551724 [2021-06-11 20:44:13,520 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1539 transitions. [2021-06-11 20:44:13,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1539 transitions. [2021-06-11 20:44:13,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:44:13,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1539 transitions. [2021-06-11 20:44:13,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.06896551724138) internal successors, (1539), 29 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:13,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 95.0) internal successors, (2850), 30 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:13,522 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 95.0) internal successors, (2850), 30 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:13,522 INFO L185 Difference]: Start difference. First operand has 1050 places, 2770 transitions, 72632 flow. Second operand 29 states and 1539 transitions. [2021-06-11 20:44:13,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1078 places, 2810 transitions, 79202 flow [2021-06-11 20:44:17,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1068 places, 2810 transitions, 78115 flow, removed 42 selfloop flow, removed 10 redundant places. [2021-06-11 20:44:17,639 INFO L241 Difference]: Finished difference. Result has 1070 places, 2771 transitions, 72922 flow [2021-06-11 20:44:17,639 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=71545, PETRI_DIFFERENCE_MINUEND_PLACES=1040, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=672, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2097, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=72922, PETRI_PLACES=1070, PETRI_TRANSITIONS=2771} [2021-06-11 20:44:17,639 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1017 predicate places. [2021-06-11 20:44:17,639 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:44:17,640 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1070 places, 2771 transitions, 72922 flow [2021-06-11 20:44:17,640 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1070 places, 2771 transitions, 72922 flow [2021-06-11 20:44:17,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1070 places, 2771 transitions, 72922 flow [2021-06-11 20:44:20,137 INFO L129 PetriNetUnfolder]: 3539/7456 cut-off events. [2021-06-11 20:44:20,137 INFO L130 PetriNetUnfolder]: For 264242/264556 co-relation queries the response was YES. [2021-06-11 20:44:20,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76954 conditions, 7456 events. 3539/7456 cut-off events. For 264242/264556 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 67588 event pairs, 62 based on Foata normal form. 50/6395 useless extension candidates. Maximal degree in co-relation 76583. Up to 2253 conditions per place. [2021-06-11 20:44:20,760 INFO L151 LiptonReduction]: Number of co-enabled transitions 15606 [2021-06-11 20:44:21,758 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:44:21,759 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:44:21,759 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4120 [2021-06-11 20:44:21,759 INFO L480 AbstractCegarLoop]: Abstraction has has 1070 places, 2771 transitions, 72922 flow [2021-06-11 20:44:21,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:21,759 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:44:21,759 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] [2021-06-11 20:44:21,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-11 20:44:21,759 INFO L428 AbstractCegarLoop]: === Iteration 76 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:44:21,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:44:21,760 INFO L82 PathProgramCache]: Analyzing trace with hash -74846874, now seen corresponding path program 8 times [2021-06-11 20:44:21,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:44:21,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220115848] [2021-06-11 20:44:21,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:44:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:44:21,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:21,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:44:21,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:21,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:44:21,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:21,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:21,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:21,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:44:21,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:21,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:44:21,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:21,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:21,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:21,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:21,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:21,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:21,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:21,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:21,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:21,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:21,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:21,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:44:21,918 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:44:21,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:44:21,941 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:44:21,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:44:21,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220115848] [2021-06-11 20:44:21,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:44:21,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:44:21,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823781567] [2021-06-11 20:44:21,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:44:21,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:44:21,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:44:21,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:44:21,946 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:44:21,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1070 places, 2771 transitions, 72922 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:21,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:44:21,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:44:21,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:44:27,839 INFO L129 PetriNetUnfolder]: 4132/8288 cut-off events. [2021-06-11 20:44:27,839 INFO L130 PetriNetUnfolder]: For 400307/400309 co-relation queries the response was YES. [2021-06-11 20:44:28,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93809 conditions, 8288 events. 4132/8288 cut-off events. For 400307/400309 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 71852 event pairs, 392 based on Foata normal form. 3/7270 useless extension candidates. Maximal degree in co-relation 93440. Up to 5134 conditions per place. [2021-06-11 20:44:28,300 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2405 selfloop transitions, 367 changer transitions 5/2795 dead transitions. [2021-06-11 20:44:28,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1093 places, 2795 transitions, 78947 flow [2021-06-11 20:44:28,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-11 20:44:28,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-06-11 20:44:28,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1273 transitions. [2021-06-11 20:44:28,302 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2021-06-11 20:44:28,302 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1273 transitions. [2021-06-11 20:44:28,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1273 transitions. [2021-06-11 20:44:28,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:44:28,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1273 transitions. [2021-06-11 20:44:28,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 53.041666666666664) internal successors, (1273), 24 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:28,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 95.0) internal successors, (2375), 25 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:28,304 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 95.0) internal successors, (2375), 25 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:28,304 INFO L185 Difference]: Start difference. First operand has 1070 places, 2771 transitions, 72922 flow. Second operand 24 states and 1273 transitions. [2021-06-11 20:44:28,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1093 places, 2795 transitions, 78947 flow [2021-06-11 20:44:32,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1068 places, 2795 transitions, 77593 flow, removed 6 selfloop flow, removed 25 redundant places. [2021-06-11 20:44:32,391 INFO L241 Difference]: Finished difference. Result has 1069 places, 2766 transitions, 72256 flow [2021-06-11 20:44:32,392 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=71576, PETRI_DIFFERENCE_MINUEND_PLACES=1045, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=72256, PETRI_PLACES=1069, PETRI_TRANSITIONS=2766} [2021-06-11 20:44:32,392 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1016 predicate places. [2021-06-11 20:44:32,392 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:44:32,392 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1069 places, 2766 transitions, 72256 flow [2021-06-11 20:44:32,392 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1069 places, 2766 transitions, 72256 flow [2021-06-11 20:44:32,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1063 places, 2766 transitions, 72256 flow [2021-06-11 20:44:34,827 INFO L129 PetriNetUnfolder]: 3529/7409 cut-off events. [2021-06-11 20:44:34,828 INFO L130 PetriNetUnfolder]: For 269025/269361 co-relation queries the response was YES. [2021-06-11 20:44:35,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76320 conditions, 7409 events. 3529/7409 cut-off events. For 269025/269361 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 66903 event pairs, 73 based on Foata normal form. 58/6366 useless extension candidates. Maximal degree in co-relation 75948. Up to 2255 conditions per place. [2021-06-11 20:44:35,099 INFO L151 LiptonReduction]: Number of co-enabled transitions 15572 [2021-06-11 20:44:36,417 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:44:36,417 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:44:36,418 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4026 [2021-06-11 20:44:36,418 INFO L480 AbstractCegarLoop]: Abstraction has has 1063 places, 2766 transitions, 72256 flow [2021-06-11 20:44:36,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:36,418 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:44:36,418 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 20:44:36,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-11 20:44:36,418 INFO L428 AbstractCegarLoop]: === Iteration 77 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:44:36,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:44:36,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1016974449, now seen corresponding path program 20 times [2021-06-11 20:44:36,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:44:36,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896751389] [2021-06-11 20:44:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:44:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:44:36,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:36,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:44:36,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:36,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:44:36,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:36,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:36,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:36,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:44:36,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:36,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:44:36,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:36,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:36,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:36,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:44:36,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:36,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:44:36,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:36,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:44:36,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:36,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:36,538 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:44:36,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:44:36,546 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:44:36,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:44:36,563 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:44:36,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:36,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:44:36,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896751389] [2021-06-11 20:44:36,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:44:36,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:44:36,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746242376] [2021-06-11 20:44:36,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:44:36,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:44:36,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:44:36,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:44:36,567 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:44:36,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1063 places, 2766 transitions, 72256 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:36,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:44:36,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:44:36,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:44:42,685 INFO L129 PetriNetUnfolder]: 4127/8283 cut-off events. [2021-06-11 20:44:42,685 INFO L130 PetriNetUnfolder]: For 398298/398306 co-relation queries the response was YES. [2021-06-11 20:44:42,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93418 conditions, 8283 events. 4127/8283 cut-off events. For 398298/398306 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 71823 event pairs, 372 based on Foata normal form. 9/7276 useless extension candidates. Maximal degree in co-relation 93048. Up to 4755 conditions per place. [2021-06-11 20:44:42,923 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2112 selfloop transitions, 682 changer transitions 0/2812 dead transitions. [2021-06-11 20:44:42,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1092 places, 2812 transitions, 78909 flow [2021-06-11 20:44:42,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-11 20:44:42,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-06-11 20:44:42,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1591 transitions. [2021-06-11 20:44:42,925 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5582456140350878 [2021-06-11 20:44:42,925 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1591 transitions. [2021-06-11 20:44:42,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1591 transitions. [2021-06-11 20:44:42,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:44:42,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1591 transitions. [2021-06-11 20:44:42,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.03333333333333) internal successors, (1591), 30 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:42,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 95.0) internal successors, (2945), 31 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:42,927 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 95.0) internal successors, (2945), 31 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:42,928 INFO L185 Difference]: Start difference. First operand has 1063 places, 2766 transitions, 72256 flow. Second operand 30 states and 1591 transitions. [2021-06-11 20:44:42,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1092 places, 2812 transitions, 78909 flow [2021-06-11 20:44:47,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1062 places, 2812 transitions, 78013 flow, removed 11 selfloop flow, removed 30 redundant places. [2021-06-11 20:44:47,245 INFO L241 Difference]: Finished difference. Result has 1064 places, 2771 transitions, 72858 flow [2021-06-11 20:44:47,246 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=71370, PETRI_DIFFERENCE_MINUEND_PLACES=1033, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=677, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2087, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=72858, PETRI_PLACES=1064, PETRI_TRANSITIONS=2771} [2021-06-11 20:44:47,246 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1011 predicate places. [2021-06-11 20:44:47,246 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:44:47,246 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1064 places, 2771 transitions, 72858 flow [2021-06-11 20:44:47,246 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1064 places, 2771 transitions, 72858 flow [2021-06-11 20:44:47,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1064 places, 2771 transitions, 72858 flow [2021-06-11 20:44:48,452 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][100], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1))), Black: 3044#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 483#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 x_0) (<= y_7 temp_4)), Black: 515#(and (<= temp_4 temp_10) (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 3060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 487#(and (<= temp_4 temp_10) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 3062#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 456#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 3078#(and (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), Black: 3080#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 489#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 459#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3082#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 523#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (= x_6 x_0)), Black: 460#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 23#L62true, Black: 495#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 465#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 469#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3575#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 471#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 3595#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 507#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 475#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= x_6 x_0) (<= y_7 temp_4)), Black: 477#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 479#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 temp_4) (= x_6 x_0)), 544#true, 47#thread2EXITtrue, Black: 2576#(and (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 (+ temp_10 1))), Black: 2616#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 2070#(and (<= temp_4 temp_10) (< x_0 (+ x_6 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 2090#(and (<= x_6 (+ temp_5 1)) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), Black: 2618#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 1056#(and (<= temp_5 x_6) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= y_7 temp_4) (= x_6 x_0)), 2111#true, Black: 1060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 1029#(and (= y_1 y_7) (= x_6 x_0)), Black: 1064#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1068#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), 69#L73true, Black: 3105#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 1054#(and (<= temp_5 x_6) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (= x_6 x_0)), 70#thread3EXITtrue, Black: 3140#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), 1095#true, 3144#true, Black: 3620#(and (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 3636#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 3624#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 86#(not f2_9), Black: 91#(not f1_2), Black: 592#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 594#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 598#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 582#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (= x_6 x_0)), Black: 586#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 96#(not f1_8), Black: 588#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 2146#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 556#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 2122#(and (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2142#(and (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 558#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 101#(not f2_3), Black: 574#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), 104#true, 616#true, Black: 3673#(and (<= (+ temp_11 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= y_7 temp_4)), Black: 2672#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 2635#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), 1652#true, Black: 3679#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3185#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= x_0 (+ x_6 1))), Black: 3154#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 3187#(and (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), Black: 1120#(and (<= temp_5 x_6) (< x_0 (+ x_6 1)) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 3171#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 3189#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 1105#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 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inserting event number 4 for the transition-marking pair ([179] L73-->thread6EXIT: Formula: (= (+ v_temp_11_21 1) v_x_6_20) InVars {temp_11=v_temp_11_21} OutVars{temp_11=v_temp_11_21, x_6=v_x_6_20} AuxVars[] AssignedVars[x_6][1903], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1))), Black: 3044#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 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y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:44:48,452 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:44:48,453 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:44:48,453 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:44:48,453 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:44:48,646 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([182] L62-->thread5EXIT: Formula: (= 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x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), 2460#true, Black: 4005#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1))), Black: 4011#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 434#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= (+ temp_10 1) y_1) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 405#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 438#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 406#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 422#(and (<= x_0 x_6) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 3504#(and (<= (+ x_6 2) x_0) (<= (+ y_7 1) y_1) (<= x_0 (+ x_6 2)) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 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(<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 2981#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_10 temp_4) (<= x_6 temp_5)), Black: 2984#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 3020#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), 3031#true, Black: 3552#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 3534#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), 3571#true, Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:44:48,646 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is not cut-off event [2021-06-11 20:44:48,646 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:44:48,646 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:44:48,647 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:44:49,815 INFO L129 PetriNetUnfolder]: 3587/7536 cut-off events. [2021-06-11 20:44:49,815 INFO L130 PetriNetUnfolder]: For 265716/266032 co-relation queries the response was YES. [2021-06-11 20:44:50,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77407 conditions, 7536 events. 3587/7536 cut-off events. For 265716/266032 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 68114 event pairs, 90 based on Foata normal form. 40/6429 useless extension candidates. Maximal degree in co-relation 77040. Up to 2283 conditions per place. [2021-06-11 20:44:50,114 INFO L151 LiptonReduction]: Number of co-enabled transitions 15624 [2021-06-11 20:44:51,408 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:44:51,408 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:44:51,408 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4162 [2021-06-11 20:44:51,408 INFO L480 AbstractCegarLoop]: Abstraction has has 1064 places, 2771 transitions, 72858 flow [2021-06-11 20:44:51,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:51,408 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:44:51,409 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] [2021-06-11 20:44:51,409 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-11 20:44:51,409 INFO L428 AbstractCegarLoop]: === Iteration 78 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:44:51,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:44:51,409 INFO L82 PathProgramCache]: Analyzing trace with hash -547258305, now seen corresponding path program 21 times [2021-06-11 20:44:51,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:44:51,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894046085] [2021-06-11 20:44:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:44:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:44:51,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:51,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:44:51,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:51,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:44:51,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:51,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:51,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:51,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:44:51,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:51,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:44:51,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:51,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:51,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:51,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:51,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:51,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:44:51,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:51,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:44:51,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:44:51,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:51,530 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:44:51,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:44:51,547 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:44:51,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:44:51,570 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:44:51,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:44:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:44:51,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894046085] [2021-06-11 20:44:51,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:44:51,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:44:51,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152150835] [2021-06-11 20:44:51,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:44:51,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:44:51,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:44:51,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:44:51,574 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:44:51,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1064 places, 2771 transitions, 72858 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:51,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:44:51,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:44:51,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:44:58,087 INFO L129 PetriNetUnfolder]: 4133/8309 cut-off events. [2021-06-11 20:44:58,088 INFO L130 PetriNetUnfolder]: For 398019/398021 co-relation queries the response was YES. [2021-06-11 20:44:58,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93786 conditions, 8309 events. 4133/8309 cut-off events. For 398019/398021 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 72161 event pairs, 367 based on Foata normal form. 3/7290 useless extension candidates. Maximal degree in co-relation 93421. Up to 4632 conditions per place. [2021-06-11 20:44:58,322 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2031 selfloop transitions, 784 changer transitions 0/2833 dead transitions. [2021-06-11 20:44:58,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1097 places, 2833 transitions, 79831 flow [2021-06-11 20:44:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-11 20:44:58,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-06-11 20:44:58,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1792 transitions. [2021-06-11 20:44:58,324 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5547987616099072 [2021-06-11 20:44:58,325 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1792 transitions. [2021-06-11 20:44:58,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1792 transitions. [2021-06-11 20:44:58,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:44:58,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1792 transitions. [2021-06-11 20:44:58,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.705882352941174) internal successors, (1792), 34 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:58,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 95.0) internal successors, (3325), 35 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:58,328 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 95.0) internal successors, (3325), 35 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:44:58,328 INFO L185 Difference]: Start difference. First operand has 1064 places, 2771 transitions, 72858 flow. Second operand 34 states and 1792 transitions. [2021-06-11 20:44:58,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1097 places, 2833 transitions, 79831 flow [2021-06-11 20:45:02,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1077 places, 2833 transitions, 78673 flow, removed 25 selfloop flow, removed 20 redundant places. [2021-06-11 20:45:02,755 INFO L241 Difference]: Finished difference. Result has 1080 places, 2781 transitions, 73694 flow [2021-06-11 20:45:02,756 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=71730, PETRI_DIFFERENCE_MINUEND_PLACES=1044, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=774, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1994, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=73694, PETRI_PLACES=1080, PETRI_TRANSITIONS=2781} [2021-06-11 20:45:02,756 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1027 predicate places. [2021-06-11 20:45:02,756 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:45:02,756 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1080 places, 2781 transitions, 73694 flow [2021-06-11 20:45:02,756 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1080 places, 2781 transitions, 73694 flow [2021-06-11 20:45:02,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1080 places, 2781 transitions, 73694 flow [2021-06-11 20:45:04,033 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][102], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1))), Black: 3044#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 483#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 x_0) (<= y_7 temp_4)), Black: 3060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 515#(and (<= temp_4 temp_10) (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 487#(and (<= temp_4 temp_10) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 3062#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 456#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 3078#(and (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), Black: 3080#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 489#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 459#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3082#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 523#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (= x_6 x_0)), Black: 460#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 23#L62true, Black: 495#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 465#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 469#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3575#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 3595#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 471#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 507#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 475#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= x_6 x_0) (<= y_7 temp_4)), Black: 477#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 479#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 temp_4) (= x_6 x_0)), 544#true, 47#thread2EXITtrue, Black: 2576#(and (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 (+ temp_10 1))), Black: 2616#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 2070#(and (<= temp_4 temp_10) (< x_0 (+ x_6 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 2090#(and (<= x_6 (+ temp_5 1)) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), Black: 2618#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 1056#(and (<= temp_5 x_6) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= y_7 temp_4) (= x_6 x_0)), 2111#true, Black: 1060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 1029#(and (= y_1 y_7) (= x_6 x_0)), Black: 1064#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1068#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), 69#L73true, Black: 1054#(and (<= temp_5 x_6) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (= x_6 x_0)), Black: 3105#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), 70#thread3EXITtrue, 1095#true, Black: 3140#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), 3144#true, Black: 3620#(and (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= (+ x_6 1) temp_5) (<= temp_5 (+ x_6 1))), Black: 3624#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 86#(not f2_9), Black: 91#(not f1_2), Black: 592#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 594#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 598#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 582#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (= x_6 x_0)), Black: 586#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 96#(not f1_8), Black: 588#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 2146#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 556#(and (<= (+ x_6 1) x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_0 (+ x_6 1))), Black: 2122#(and (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2142#(and (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 558#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 101#(not f2_3), Black: 574#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), 104#true, 616#true, Black: 3673#(and (<= (+ temp_11 1) x_0) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= y_7 temp_4)), Black: 2672#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 2635#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), 1652#true, Black: 3679#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3185#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= x_0 (+ x_6 1))), Black: 3154#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 3187#(and (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), Black: 1120#(and (<= temp_5 x_6) (< x_0 (+ x_6 1)) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 3171#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 3189#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 1105#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 3157#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 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tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:45:04,033 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:45:04,034 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([179] L73-->thread6EXIT: Formula: (= (+ v_temp_11_21 1) v_x_6_20) InVars {temp_11=v_temp_11_21} OutVars{temp_11=v_temp_11_21, x_6=v_x_6_20} AuxVars[] AssignedVars[x_6][1925], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= 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4025#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_10 temp_4) (<= x_6 temp_5)), Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 3534#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), 3571#true, Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:45:04,034 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:45:04,034 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:45:04,034 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:45:04,034 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:45:04,332 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([182] L62-->thread5EXIT: Formula: (= (+ v_temp_10_23 1) v_y_7_24) InVars {temp_10=v_temp_10_23} OutVars{temp_10=v_temp_10_23, y_7=v_y_7_24} AuxVars[] AssignedVars[y_7][1442], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) 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(< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 3552#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 4025#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_10 temp_4) (<= x_6 temp_5)), Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 3534#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), 3571#true, Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:45:04,332 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is not cut-off event [2021-06-11 20:45:04,332 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:45:04,332 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:45:04,332 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:45:05,601 INFO L129 PetriNetUnfolder]: 3570/7488 cut-off events. [2021-06-11 20:45:05,601 INFO L130 PetriNetUnfolder]: For 265491/265892 co-relation queries the response was YES. [2021-06-11 20:45:05,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77573 conditions, 7488 events. 3570/7488 cut-off events. For 265491/265892 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 67574 event pairs, 97 based on Foata normal form. 50/6406 useless extension candidates. Maximal degree in co-relation 77204. Up to 2281 conditions per place. [2021-06-11 20:45:05,891 INFO L151 LiptonReduction]: Number of co-enabled transitions 15682 [2021-06-11 20:45:07,325 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:45:07,325 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:45:07,326 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4570 [2021-06-11 20:45:07,326 INFO L480 AbstractCegarLoop]: Abstraction has has 1080 places, 2781 transitions, 73694 flow [2021-06-11 20:45:07,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:07,326 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:45:07,326 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] [2021-06-11 20:45:07,326 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-11 20:45:07,326 INFO L428 AbstractCegarLoop]: === Iteration 79 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:45:07,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:45:07,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1824753191, now seen corresponding path program 22 times [2021-06-11 20:45:07,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:45:07,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985041835] [2021-06-11 20:45:07,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:45:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:45:07,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:07,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:45:07,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:07,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:45:07,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:07,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:07,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:07,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:45:07,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:07,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:45:07,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:07,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:45:07,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:07,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:07,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:07,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:45:07,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:07,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:07,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:07,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:07,475 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:45:07,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:45:07,497 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:45:07,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:45:07,521 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:45:07,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:45:07,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985041835] [2021-06-11 20:45:07,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:45:07,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:45:07,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780280636] [2021-06-11 20:45:07,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:45:07,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:45:07,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:45:07,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:45:07,526 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:45:07,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1080 places, 2781 transitions, 73694 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:07,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:45:07,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:45:07,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:45:14,056 INFO L129 PetriNetUnfolder]: 4165/8366 cut-off events. [2021-06-11 20:45:14,056 INFO L130 PetriNetUnfolder]: For 398942/398950 co-relation queries the response was YES. [2021-06-11 20:45:14,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94681 conditions, 8366 events. 4165/8366 cut-off events. For 398942/398950 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 72813 event pairs, 388 based on Foata normal form. 9/7349 useless extension candidates. Maximal degree in co-relation 94314. Up to 4895 conditions per place. [2021-06-11 20:45:14,333 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2156 selfloop transitions, 667 changer transitions 0/2841 dead transitions. [2021-06-11 20:45:14,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1110 places, 2841 transitions, 80737 flow [2021-06-11 20:45:14,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-11 20:45:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-06-11 20:45:14,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1659 transitions. [2021-06-11 20:45:14,335 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5633276740237692 [2021-06-11 20:45:14,335 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1659 transitions. [2021-06-11 20:45:14,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1659 transitions. [2021-06-11 20:45:14,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:45:14,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1659 transitions. [2021-06-11 20:45:14,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:14,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 95.0) internal successors, (3040), 32 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:14,337 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 95.0) internal successors, (3040), 32 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:14,338 INFO L185 Difference]: Start difference. First operand has 1080 places, 2781 transitions, 73694 flow. Second operand 31 states and 1659 transitions. [2021-06-11 20:45:14,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1110 places, 2841 transitions, 80737 flow [2021-06-11 20:45:18,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1088 places, 2841 transitions, 79446 flow, removed 75 selfloop flow, removed 22 redundant places. [2021-06-11 20:45:19,001 INFO L241 Difference]: Finished difference. Result has 1093 places, 2807 transitions, 74461 flow [2021-06-11 20:45:19,002 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=72411, PETRI_DIFFERENCE_MINUEND_PLACES=1058, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=643, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=74461, PETRI_PLACES=1093, PETRI_TRANSITIONS=2807} [2021-06-11 20:45:19,002 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1040 predicate places. [2021-06-11 20:45:19,002 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:45:19,002 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1093 places, 2807 transitions, 74461 flow [2021-06-11 20:45:19,002 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1093 places, 2807 transitions, 74461 flow [2021-06-11 20:45:19,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1093 places, 2807 transitions, 74461 flow [2021-06-11 20:45:22,187 INFO L129 PetriNetUnfolder]: 3594/7565 cut-off events. [2021-06-11 20:45:22,187 INFO L130 PetriNetUnfolder]: For 273014/273360 co-relation queries the response was YES. [2021-06-11 20:45:22,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78160 conditions, 7565 events. 3594/7565 cut-off events. For 273014/273360 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 68874 event pairs, 79 based on Foata normal form. 54/6479 useless extension candidates. Maximal degree in co-relation 77787. Up to 2291 conditions per place. [2021-06-11 20:45:22,458 INFO L151 LiptonReduction]: Number of co-enabled transitions 15920 [2021-06-11 20:45:24,013 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:45:24,014 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:45:24,014 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5012 [2021-06-11 20:45:24,014 INFO L480 AbstractCegarLoop]: Abstraction has has 1093 places, 2807 transitions, 74461 flow [2021-06-11 20:45:24,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:24,014 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:45:24,014 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] [2021-06-11 20:45:24,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-11 20:45:24,015 INFO L428 AbstractCegarLoop]: === Iteration 80 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:45:24,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:45:24,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1691480146, now seen corresponding path program 9 times [2021-06-11 20:45:24,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:45:24,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885843834] [2021-06-11 20:45:24,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:45:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:45:24,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:24,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:45:24,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:24,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:45:24,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:24,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:24,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:24,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:45:24,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:24,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:45:24,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:24,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:45:24,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:24,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:45:24,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:24,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:24,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:24,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:24,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:24,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:24,155 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:45:24,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:45:24,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:45:24,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:45:24,200 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:45:24,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:45:24,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885843834] [2021-06-11 20:45:24,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:45:24,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:45:24,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741540276] [2021-06-11 20:45:24,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:45:24,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:45:24,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:45:24,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:45:24,204 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:45:24,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1093 places, 2807 transitions, 74461 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:24,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:45:24,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:45:24,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:45:30,613 INFO L129 PetriNetUnfolder]: 4164/8362 cut-off events. [2021-06-11 20:45:30,613 INFO L130 PetriNetUnfolder]: For 403004/403012 co-relation queries the response was YES. [2021-06-11 20:45:30,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95089 conditions, 8362 events. 4164/8362 cut-off events. For 403004/403012 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 72771 event pairs, 342 based on Foata normal form. 9/7354 useless extension candidates. Maximal degree in co-relation 94718. Up to 4851 conditions per place. [2021-06-11 20:45:30,858 INFO L132 encePairwiseOnDemand]: 77/95 looper letters, 2211 selfloop transitions, 624 changer transitions 0/2853 dead transitions. [2021-06-11 20:45:30,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1111 places, 2853 transitions, 81328 flow [2021-06-11 20:45:30,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-11 20:45:30,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-06-11 20:45:30,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1027 transitions. [2021-06-11 20:45:30,860 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5689750692520775 [2021-06-11 20:45:30,860 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1027 transitions. [2021-06-11 20:45:30,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1027 transitions. [2021-06-11 20:45:30,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:45:30,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1027 transitions. [2021-06-11 20:45:30,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 54.05263157894737) internal successors, (1027), 19 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:30,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 95.0) internal successors, (1900), 20 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:30,862 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 95.0) internal successors, (1900), 20 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:30,862 INFO L185 Difference]: Start difference. First operand has 1093 places, 2807 transitions, 74461 flow. Second operand 19 states and 1027 transitions. [2021-06-11 20:45:30,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1111 places, 2853 transitions, 81328 flow [2021-06-11 20:45:35,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1097 places, 2853 transitions, 80915 flow, removed 49 selfloop flow, removed 14 redundant places. [2021-06-11 20:45:35,478 INFO L241 Difference]: Finished difference. Result has 1101 places, 2818 transitions, 75646 flow [2021-06-11 20:45:35,479 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=74048, PETRI_DIFFERENCE_MINUEND_PLACES=1079, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=614, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=75646, PETRI_PLACES=1101, PETRI_TRANSITIONS=2818} [2021-06-11 20:45:35,479 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1048 predicate places. [2021-06-11 20:45:35,479 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:45:35,480 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1101 places, 2818 transitions, 75646 flow [2021-06-11 20:45:35,480 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1101 places, 2818 transitions, 75646 flow [2021-06-11 20:45:35,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1101 places, 2818 transitions, 75646 flow [2021-06-11 20:45:38,466 INFO L129 PetriNetUnfolder]: 3608/7597 cut-off events. [2021-06-11 20:45:38,466 INFO L130 PetriNetUnfolder]: For 278105/278436 co-relation queries the response was YES. [2021-06-11 20:45:38,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78876 conditions, 7597 events. 3608/7597 cut-off events. For 278105/278436 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 69200 event pairs, 85 based on Foata normal form. 68/6500 useless extension candidates. Maximal degree in co-relation 78498. Up to 2278 conditions per place. [2021-06-11 20:45:38,805 INFO L151 LiptonReduction]: Number of co-enabled transitions 16004 [2021-06-11 20:45:39,939 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:45:39,940 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:45:39,940 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4461 [2021-06-11 20:45:39,940 INFO L480 AbstractCegarLoop]: Abstraction has has 1101 places, 2818 transitions, 75646 flow [2021-06-11 20:45:39,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:39,940 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:45:39,940 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] [2021-06-11 20:45:39,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-11 20:45:39,940 INFO L428 AbstractCegarLoop]: === Iteration 81 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:45:39,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:45:39,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1094285061, now seen corresponding path program 23 times [2021-06-11 20:45:39,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:45:39,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579421571] [2021-06-11 20:45:39,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:45:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:45:39,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:39,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:45:39,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:39,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:45:39,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:39,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:40,239 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-06-11 20:45:40,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:40,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:45:40,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:40,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:45:40,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:40,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:45:40,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:40,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:40,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:40,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:45:40,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:40,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:45:40,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:40,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:40,332 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:45:40,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:45:40,350 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:45:40,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:45:40,369 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:45:40,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:40,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:45:40,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579421571] [2021-06-11 20:45:40,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:45:40,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:45:40,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357148091] [2021-06-11 20:45:40,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:45:40,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:45:40,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:45:40,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:45:40,373 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:45:40,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1101 places, 2818 transitions, 75646 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:40,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:45:40,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:45:40,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:45:47,142 INFO L129 PetriNetUnfolder]: 4189/8448 cut-off events. [2021-06-11 20:45:47,142 INFO L130 PetriNetUnfolder]: For 406833/406840 co-relation queries the response was YES. [2021-06-11 20:45:47,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96233 conditions, 8448 events. 4189/8448 cut-off events. For 406833/406840 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 73987 event pairs, 384 based on Foata normal form. 7/7413 useless extension candidates. Maximal degree in co-relation 95857. Up to 4887 conditions per place. [2021-06-11 20:45:47,545 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2230 selfloop transitions, 630 changer transitions 0/2878 dead transitions. [2021-06-11 20:45:47,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1131 places, 2878 transitions, 82662 flow [2021-06-11 20:45:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-11 20:45:47,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-06-11 20:45:47,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1643 transitions. [2021-06-11 20:45:47,547 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5578947368421052 [2021-06-11 20:45:47,547 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1643 transitions. [2021-06-11 20:45:47,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1643 transitions. [2021-06-11 20:45:47,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:45:47,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1643 transitions. [2021-06-11 20:45:47,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.0) internal successors, (1643), 31 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:47,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 95.0) internal successors, (3040), 32 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:47,550 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 95.0) internal successors, (3040), 32 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:47,550 INFO L185 Difference]: Start difference. First operand has 1101 places, 2818 transitions, 75646 flow. Second operand 31 states and 1643 transitions. [2021-06-11 20:45:47,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1131 places, 2878 transitions, 82662 flow [2021-06-11 20:45:52,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1120 places, 2878 transitions, 81705 flow, removed 116 selfloop flow, removed 11 redundant places. [2021-06-11 20:45:52,454 INFO L241 Difference]: Finished difference. Result has 1124 places, 2828 transitions, 76434 flow [2021-06-11 20:45:52,455 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=74689, PETRI_DIFFERENCE_MINUEND_PLACES=1090, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2818, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=620, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=76434, PETRI_PLACES=1124, PETRI_TRANSITIONS=2828} [2021-06-11 20:45:52,455 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1071 predicate places. [2021-06-11 20:45:52,455 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:45:52,455 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1124 places, 2828 transitions, 76434 flow [2021-06-11 20:45:52,455 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1124 places, 2828 transitions, 76434 flow [2021-06-11 20:45:52,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1124 places, 2828 transitions, 76434 flow [2021-06-11 20:45:55,513 INFO L129 PetriNetUnfolder]: 3622/7633 cut-off events. [2021-06-11 20:45:55,513 INFO L130 PetriNetUnfolder]: For 271548/271939 co-relation queries the response was YES. [2021-06-11 20:45:55,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79754 conditions, 7633 events. 3622/7633 cut-off events. For 271548/271939 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 69540 event pairs, 131 based on Foata normal form. 57/6514 useless extension candidates. Maximal degree in co-relation 79372. Up to 2289 conditions per place. [2021-06-11 20:45:55,801 INFO L151 LiptonReduction]: Number of co-enabled transitions 16074 [2021-06-11 20:45:57,244 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:45:57,244 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:45:57,245 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4790 [2021-06-11 20:45:57,245 INFO L480 AbstractCegarLoop]: Abstraction has has 1124 places, 2828 transitions, 76434 flow [2021-06-11 20:45:57,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:57,245 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:45:57,245 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] [2021-06-11 20:45:57,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-11 20:45:57,245 INFO L428 AbstractCegarLoop]: === Iteration 82 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:45:57,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:45:57,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1906494713, now seen corresponding path program 3 times [2021-06-11 20:45:57,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:45:57,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239342061] [2021-06-11 20:45:57,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:45:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:45:57,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:57,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:45:57,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:57,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:45:57,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:57,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:57,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:57,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:45:57,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:57,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:45:57,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:57,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:45:57,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:57,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:45:57,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:57,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:57,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:57,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:57,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:45:57,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:57,354 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:45:57,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:45:57,376 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:45:57,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:45:57,394 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:45:57,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:45:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:45:57,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239342061] [2021-06-11 20:45:57,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:45:57,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:45:57,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137579637] [2021-06-11 20:45:57,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:45:57,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:45:57,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:45:57,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:45:57,398 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:45:57,399 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1124 places, 2828 transitions, 76434 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:45:57,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:45:57,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:45:57,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:46:03,947 INFO L129 PetriNetUnfolder]: 4189/8433 cut-off events. [2021-06-11 20:46:03,947 INFO L130 PetriNetUnfolder]: For 412318/412326 co-relation queries the response was YES. [2021-06-11 20:46:04,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97323 conditions, 8433 events. 4189/8433 cut-off events. For 412318/412326 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 73675 event pairs, 342 based on Foata normal form. 9/7413 useless extension candidates. Maximal degree in co-relation 96943. Up to 4808 conditions per place. [2021-06-11 20:46:04,423 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2211 selfloop transitions, 656 changer transitions 0/2885 dead transitions. [2021-06-11 20:46:04,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1143 places, 2885 transitions, 83889 flow [2021-06-11 20:46:04,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-11 20:46:04,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-06-11 20:46:04,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1109 transitions. [2021-06-11 20:46:04,425 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5836842105263158 [2021-06-11 20:46:04,425 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1109 transitions. [2021-06-11 20:46:04,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1109 transitions. [2021-06-11 20:46:04,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:46:04,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1109 transitions. [2021-06-11 20:46:04,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 55.45) internal successors, (1109), 20 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:04,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 95.0) internal successors, (1995), 21 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:04,426 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 95.0) internal successors, (1995), 21 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:04,427 INFO L185 Difference]: Start difference. First operand has 1124 places, 2828 transitions, 76434 flow. Second operand 20 states and 1109 transitions. [2021-06-11 20:46:04,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1143 places, 2885 transitions, 83889 flow [2021-06-11 20:46:08,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1126 places, 2885 transitions, 82859 flow, removed 73 selfloop flow, removed 17 redundant places. [2021-06-11 20:46:08,988 INFO L241 Difference]: Finished difference. Result has 1133 places, 2843 transitions, 77380 flow [2021-06-11 20:46:08,989 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=75404, PETRI_DIFFERENCE_MINUEND_PLACES=1107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=642, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=77380, PETRI_PLACES=1133, PETRI_TRANSITIONS=2843} [2021-06-11 20:46:08,989 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1080 predicate places. [2021-06-11 20:46:08,989 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:46:08,989 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1133 places, 2843 transitions, 77380 flow [2021-06-11 20:46:08,990 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1133 places, 2843 transitions, 77380 flow [2021-06-11 20:46:09,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1133 places, 2843 transitions, 77380 flow [2021-06-11 20:46:09,924 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][103], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) 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x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:46:09,924 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:46:09,924 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:09,925 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:09,925 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:09,925 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([179] L73-->thread6EXIT: Formula: (= (+ v_temp_11_21 1) v_x_6_20) InVars {temp_11=v_temp_11_21} OutVars{temp_11=v_temp_11_21, x_6=v_x_6_20} AuxVars[] AssignedVars[x_6][1586], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 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ancestors and is cut-off event [2021-06-11 20:46:09,925 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:10,192 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][103], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ 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x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:46:10,192 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:46:10,192 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:10,192 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:10,192 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:10,192 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([179] L73-->thread6EXIT: Formula: (= (+ v_temp_11_21 1) v_x_6_20) InVars {temp_11=v_temp_11_21} OutVars{temp_11=v_temp_11_21, x_6=v_x_6_20} AuxVars[] AssignedVars[x_6][1586], [Black: 2544#(and (<= temp_5 x_6) (<= (+ 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1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 3534#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), 3571#true, Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:46:10,192 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:46:10,192 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:10,192 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:10,192 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:10,413 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([182] L62-->thread5EXIT: Formula: (= (+ v_temp_10_23 1) v_y_7_24) InVars {temp_10=v_temp_10_23} OutVars{temp_10=v_temp_10_23, y_7=v_y_7_24} AuxVars[] AssignedVars[y_7][2099], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= 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x_0) (<= (+ temp_5 1) x_6)), Black: 1966#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 3486#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), 1992#true, Black: 3487#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), 3530#true, Black: 2483#(and (<= x_0 x_6) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 2503#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 2489#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 2505#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 2491#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 2493#(and (<= x_0 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 2477#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3024#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 3008#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_7 temp_4)), Black: 2495#(and (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 2981#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_10 temp_4) (<= x_6 temp_5)), Black: 2984#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 3020#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), 3031#true, Black: 4066#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), Black: 4072#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 3552#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 4025#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_10 temp_4) (<= x_6 temp_5)), 4077#true, Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 3534#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), 3571#true, Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:46:10,413 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is not cut-off event [2021-06-11 20:46:10,414 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:46:10,414 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:46:10,414 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:46:11,653 INFO L129 PetriNetUnfolder]: 3659/7696 cut-off events. [2021-06-11 20:46:11,654 INFO L130 PetriNetUnfolder]: For 284883/285253 co-relation queries the response was YES. [2021-06-11 20:46:11,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81211 conditions, 7696 events. 3659/7696 cut-off events. For 284883/285253 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 70089 event pairs, 101 based on Foata normal form. 50/6559 useless extension candidates. Maximal degree in co-relation 80822. Up to 2322 conditions per place. [2021-06-11 20:46:12,275 INFO L151 LiptonReduction]: Number of co-enabled transitions 16192 [2021-06-11 20:46:13,326 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:46:13,326 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:46:13,326 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4337 [2021-06-11 20:46:13,326 INFO L480 AbstractCegarLoop]: Abstraction has has 1133 places, 2843 transitions, 77380 flow [2021-06-11 20:46:13,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:13,326 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:46:13,327 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] [2021-06-11 20:46:13,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-11 20:46:13,327 INFO L428 AbstractCegarLoop]: === Iteration 83 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:46:13,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:46:13,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1665683299, now seen corresponding path program 24 times [2021-06-11 20:46:13,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:46:13,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250763745] [2021-06-11 20:46:13,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:46:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:46:13,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:13,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:46:13,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:13,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:46:13,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:13,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:46:13,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:13,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:46:13,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:13,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:46:13,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:13,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:46:13,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:13,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:46:13,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:13,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:46:13,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:13,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:46:13,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:13,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:46:13,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:13,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:46:13,471 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-11 20:46:13,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:46:13,490 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:46:13,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:46:13,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:46:13,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250763745] [2021-06-11 20:46:13,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:46:13,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:46:13,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922452114] [2021-06-11 20:46:13,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:46:13,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:46:13,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:46:13,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:46:13,493 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:46:13,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1133 places, 2843 transitions, 77380 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:13,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:46:13,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:46:13,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:46:20,260 INFO L129 PetriNetUnfolder]: 4235/8570 cut-off events. [2021-06-11 20:46:20,260 INFO L130 PetriNetUnfolder]: For 434788/434792 co-relation queries the response was YES. [2021-06-11 20:46:20,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99334 conditions, 8570 events. 4235/8570 cut-off events. For 434788/434792 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 75465 event pairs, 406 based on Foata normal form. 5/7512 useless extension candidates. Maximal degree in co-relation 98947. Up to 5178 conditions per place. [2021-06-11 20:46:20,509 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2512 selfloop transitions, 423 changer transitions 0/2953 dead transitions. [2021-06-11 20:46:20,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1164 places, 2953 transitions, 87085 flow [2021-06-11 20:46:20,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-11 20:46:20,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-06-11 20:46:20,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1690 transitions. [2021-06-11 20:46:20,511 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.555921052631579 [2021-06-11 20:46:20,511 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1690 transitions. [2021-06-11 20:46:20,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1690 transitions. [2021-06-11 20:46:20,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:46:20,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1690 transitions. [2021-06-11 20:46:20,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.8125) internal successors, (1690), 32 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:20,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 95.0) internal successors, (3135), 33 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:20,513 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 95.0) internal successors, (3135), 33 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:20,513 INFO L185 Difference]: Start difference. First operand has 1133 places, 2843 transitions, 77380 flow. Second operand 32 states and 1690 transitions. [2021-06-11 20:46:20,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1164 places, 2953 transitions, 87085 flow [2021-06-11 20:46:24,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1155 places, 2953 transitions, 86090 flow, removed 143 selfloop flow, removed 9 redundant places. [2021-06-11 20:46:24,797 INFO L241 Difference]: Finished difference. Result has 1168 places, 2913 transitions, 80291 flow [2021-06-11 20:46:24,798 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=76386, PETRI_DIFFERENCE_MINUEND_PLACES=1124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2843, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=80291, PETRI_PLACES=1168, PETRI_TRANSITIONS=2913} [2021-06-11 20:46:24,798 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1115 predicate places. [2021-06-11 20:46:24,798 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:46:24,798 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1168 places, 2913 transitions, 80291 flow [2021-06-11 20:46:24,798 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1168 places, 2913 transitions, 80291 flow [2021-06-11 20:46:24,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1168 places, 2913 transitions, 80291 flow [2021-06-11 20:46:26,361 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][113], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1))), Black: 483#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 x_0) (<= y_7 temp_4)), Black: 3044#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 515#(and (<= temp_4 temp_10) (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 3060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 487#(and (<= temp_4 temp_10) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 3062#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 456#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 3078#(and (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), Black: 489#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3080#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 459#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3082#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 523#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (= x_6 x_0)), Black: 460#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 23#L62true, Black: 495#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 465#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 469#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3575#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 3595#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 471#(and (= y_1 y_7) (<= temp_4 y_7) (<= y_7 temp_4) (= x_6 x_0)), Black: 507#(and (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 475#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= x_6 x_0) (<= y_7 temp_4)), Black: 477#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 479#(and (<= temp_4 temp_10) (= y_1 y_7) (<= temp_4 y_7) (<= temp_10 temp_4) (<= y_7 temp_4) (= x_6 x_0)), Black: 4112#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 544#true, Black: 4089#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< 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y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), 3571#true, Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:46:26,361 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:46:26,361 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:26,361 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:26,361 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:26,361 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([179] L73-->thread6EXIT: Formula: (= (+ v_temp_11_21 1) v_x_6_20) InVars {temp_11=v_temp_11_21} OutVars{temp_11=v_temp_11_21, x_6=v_x_6_20} AuxVars[] AssignedVars[x_6][1219], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) 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event [2021-06-11 20:46:26,361 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:26,472 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([182] L62-->thread5EXIT: Formula: (= (+ v_temp_10_23 1) v_y_7_24) InVars {temp_10=v_temp_10_23} OutVars{temp_10=v_temp_10_23, y_7=v_y_7_24} AuxVars[] AssignedVars[y_7][1770], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 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(<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), Black: 918#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 3498#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1980#(and (<= x_0 x_6) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0) (<= (+ temp_5 1) x_6)), Black: 1966#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 3486#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), 1992#true, Black: 3487#(and (<= (+ x_6 1) x_0) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), 3530#true, Black: 2483#(and (<= x_0 x_6) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 2503#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= 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y_1) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 2981#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_10 temp_4) (<= x_6 temp_5)), Black: 2984#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 3020#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), 3031#true, Black: 4066#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), Black: 4072#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 3552#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 4025#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_10 temp_4) (<= x_6 temp_5)), 4077#true, Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 3534#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), 3571#true, Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:46:26,473 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is not cut-off event [2021-06-11 20:46:26,473 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:46:26,473 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:46:26,473 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:46:27,883 INFO L129 PetriNetUnfolder]: 3654/7750 cut-off events. [2021-06-11 20:46:27,883 INFO L130 PetriNetUnfolder]: For 308773/309292 co-relation queries the response was YES. [2021-06-11 20:46:28,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82410 conditions, 7750 events. 3654/7750 cut-off events. For 308773/309292 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 71263 event pairs, 85 based on Foata normal form. 71/6618 useless extension candidates. Maximal degree in co-relation 82008. Up to 2348 conditions per place. [2021-06-11 20:46:28,164 INFO L151 LiptonReduction]: Number of co-enabled transitions 16570 [2021-06-11 20:46:29,267 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:46:29,268 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:46:29,268 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4470 [2021-06-11 20:46:29,268 INFO L480 AbstractCegarLoop]: Abstraction has has 1168 places, 2913 transitions, 80291 flow [2021-06-11 20:46:29,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:29,268 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:46:29,268 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] [2021-06-11 20:46:29,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-11 20:46:29,268 INFO L428 AbstractCegarLoop]: === Iteration 84 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:46:29,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:46:29,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1493547101, now seen corresponding path program 25 times [2021-06-11 20:46:29,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:46:29,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644783029] [2021-06-11 20:46:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:46:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:46:29,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:29,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:46:29,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:29,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:46:29,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:29,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:46:29,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:29,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:46:29,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:29,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:46:29,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:29,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:46:29,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:29,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:46:29,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:29,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:46:29,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:29,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:46:29,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:29,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:46:29,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:29,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:46:29,408 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:46:29,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:46:29,427 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:46:29,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:46:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:46:29,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644783029] [2021-06-11 20:46:29,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:46:29,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:46:29,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134838638] [2021-06-11 20:46:29,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:46:29,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:46:29,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:46:29,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:46:29,430 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:46:29,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1168 places, 2913 transitions, 80291 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:29,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:46:29,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:46:29,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:46:36,221 INFO L129 PetriNetUnfolder]: 4240/8580 cut-off events. [2021-06-11 20:46:36,221 INFO L130 PetriNetUnfolder]: For 442648/442650 co-relation queries the response was YES. [2021-06-11 20:46:36,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100160 conditions, 8580 events. 4240/8580 cut-off events. For 442648/442650 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 75565 event pairs, 404 based on Foata normal form. 3/7514 useless extension candidates. Maximal degree in co-relation 99760. Up to 5179 conditions per place. [2021-06-11 20:46:36,487 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2520 selfloop transitions, 415 changer transitions 0/2953 dead transitions. [2021-06-11 20:46:36,487 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1197 places, 2953 transitions, 87293 flow [2021-06-11 20:46:36,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-11 20:46:36,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-06-11 20:46:36,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1586 transitions. [2021-06-11 20:46:36,489 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5564912280701755 [2021-06-11 20:46:36,489 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1586 transitions. [2021-06-11 20:46:36,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1586 transitions. [2021-06-11 20:46:36,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:46:36,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1586 transitions. [2021-06-11 20:46:36,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.86666666666667) internal successors, (1586), 30 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:36,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 95.0) internal successors, (2945), 31 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:36,491 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 95.0) internal successors, (2945), 31 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:36,491 INFO L185 Difference]: Start difference. First operand has 1168 places, 2913 transitions, 80291 flow. Second operand 30 states and 1586 transitions. [2021-06-11 20:46:36,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1197 places, 2953 transitions, 87293 flow [2021-06-11 20:46:41,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1179 places, 2953 transitions, 85307 flow, removed 772 selfloop flow, removed 18 redundant places. [2021-06-11 20:46:41,287 INFO L241 Difference]: Finished difference. Result has 1181 places, 2915 transitions, 79224 flow [2021-06-11 20:46:41,289 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=78359, PETRI_DIFFERENCE_MINUEND_PLACES=1150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2913, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=413, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=79224, PETRI_PLACES=1181, PETRI_TRANSITIONS=2915} [2021-06-11 20:46:41,289 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1128 predicate places. [2021-06-11 20:46:41,289 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:46:41,289 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1181 places, 2915 transitions, 79224 flow [2021-06-11 20:46:41,289 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1181 places, 2915 transitions, 79224 flow [2021-06-11 20:46:41,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1181 places, 2915 transitions, 79224 flow [2021-06-11 20:46:42,630 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][118], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1))), Black: 3044#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 483#(and (<= temp_4 temp_10) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 x_0) (<= y_7 temp_4)), Black: 515#(and (<= temp_4 temp_10) (<= (+ temp_11 1) x_0) (<= x_0 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 3060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 487#(and (<= temp_4 temp_10) (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 3062#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 456#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 3078#(and (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), Black: 489#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3080#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 459#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3082#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 523#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_11 1) x_0) (<= temp_10 temp_4) (<= x_0 (+ temp_11 1)) (= x_6 x_0)), Black: 460#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), 23#L62true, Black: 495#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 465#(and (<= x_0 x_6) (< x_6 (+ x_0 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7)), Black: 3575#(and (<= (+ x_6 1) x_0) (<= y_7 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1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:46:42,630 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:46:42,630 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:42,630 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:42,630 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:46:42,630 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([179] L73-->thread6EXIT: Formula: (= (+ v_temp_11_21 1) v_x_6_20) InVars {temp_11=v_temp_11_21} OutVars{temp_11=v_temp_11_21, x_6=v_x_6_20} AuxVars[] AssignedVars[x_6][1243], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) 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L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([182] L62-->thread5EXIT: Formula: (= (+ v_temp_10_23 1) v_y_7_24) InVars {temp_10=v_temp_10_23} OutVars{temp_10=v_temp_10_23, y_7=v_y_7_24} AuxVars[] AssignedVars[y_7][1792], [Black: 2544#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), 1027#true, Black: 2554#(and (<= temp_4 temp_10) (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1))), Black: 3044#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ 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(+ y_7 1)) (<= x_0 (+ x_6 1))), 3530#true, Black: 2483#(and (<= x_0 x_6) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_7 temp_4)), Black: 2503#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 2489#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 2505#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 2491#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 2493#(and (<= x_0 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 2477#(and (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3024#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 3008#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_7 temp_4)), Black: 2495#(and (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 2981#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_10 temp_4) (<= x_6 temp_5)), Black: 2984#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 3020#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), 3031#true, Black: 4066#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), Black: 4072#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 3552#(and (<= (+ temp_11 1) x_0) (<= x_0 (+ temp_11 1)) (<= y_7 y_1) (<= y_1 y_7) (= x_6 x_0)), Black: 4025#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_10 temp_4) (<= x_6 temp_5)), 4077#true, Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 3534#(and (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= y_1 y_7) (<= x_0 (+ x_6 1))), 3571#true, Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:46:42,888 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is not cut-off event [2021-06-11 20:46:42,888 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:46:42,888 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:46:42,888 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:46:44,230 INFO L129 PetriNetUnfolder]: 3658/7759 cut-off events. [2021-06-11 20:46:44,230 INFO L130 PetriNetUnfolder]: For 298156/298727 co-relation queries the response was YES. [2021-06-11 20:46:44,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81723 conditions, 7759 events. 3658/7759 cut-off events. For 298156/298727 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 71565 event pairs, 99 based on Foata normal form. 70/6623 useless extension candidates. Maximal degree in co-relation 81325. Up to 2323 conditions per place. [2021-06-11 20:46:44,517 INFO L151 LiptonReduction]: Number of co-enabled transitions 16596 [2021-06-11 20:46:45,762 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:46:45,762 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:46:45,762 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4473 [2021-06-11 20:46:45,762 INFO L480 AbstractCegarLoop]: Abstraction has has 1181 places, 2915 transitions, 79224 flow [2021-06-11 20:46:45,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:45,763 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:46:45,763 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] [2021-06-11 20:46:45,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-11 20:46:45,763 INFO L428 AbstractCegarLoop]: === Iteration 85 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:46:45,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:46:45,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1525099179, now seen corresponding path program 26 times [2021-06-11 20:46:45,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:46:45,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147303216] [2021-06-11 20:46:45,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:46:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:46:45,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:45,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:46:45,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:45,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:46:45,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:45,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:46:45,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:45,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:46:45,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:45,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:46:45,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:45,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:46:45,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:45,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:46:45,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:45,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:46:45,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:45,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:46:45,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:46:45,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:46:45,875 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:46:45,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:46:45,891 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:46:45,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:46:46,157 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:46:46,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:46:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:46:46,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147303216] [2021-06-11 20:46:46,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:46:46,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 20:46:46,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347442214] [2021-06-11 20:46:46,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-11 20:46:46,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:46:46,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-11 20:46:46,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-06-11 20:46:46,160 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:46:46,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1181 places, 2915 transitions, 79224 flow. Second operand has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:46,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:46:46,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:46:46,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:46:52,860 INFO L129 PetriNetUnfolder]: 4353/8829 cut-off events. [2021-06-11 20:46:52,860 INFO L130 PetriNetUnfolder]: For 450224/450228 co-relation queries the response was YES. [2021-06-11 20:46:53,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102503 conditions, 8829 events. 4353/8829 cut-off events. For 450224/450228 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 78464 event pairs, 381 based on Foata normal form. 5/7732 useless extension candidates. Maximal degree in co-relation 102107. Up to 5155 conditions per place. [2021-06-11 20:46:53,366 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2412 selfloop transitions, 606 changer transitions 0/3036 dead transitions. [2021-06-11 20:46:53,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1208 places, 3036 transitions, 89257 flow [2021-06-11 20:46:53,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-11 20:46:53,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-06-11 20:46:53,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1508 transitions. [2021-06-11 20:46:53,368 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5669172932330827 [2021-06-11 20:46:53,368 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1508 transitions. [2021-06-11 20:46:53,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1508 transitions. [2021-06-11 20:46:53,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:46:53,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1508 transitions. [2021-06-11 20:46:53,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 53.857142857142854) internal successors, (1508), 28 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:53,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 95.0) internal successors, (2755), 29 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:53,370 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 95.0) internal successors, (2755), 29 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:46:53,370 INFO L185 Difference]: Start difference. First operand has 1181 places, 2915 transitions, 79224 flow. Second operand 28 states and 1508 transitions. [2021-06-11 20:46:53,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1208 places, 3036 transitions, 89257 flow [2021-06-11 20:46:58,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1186 places, 3036 transitions, 88421 flow, removed 8 selfloop flow, removed 22 redundant places. [2021-06-11 20:46:58,083 INFO L241 Difference]: Finished difference. Result has 1197 places, 2996 transitions, 82624 flow [2021-06-11 20:46:58,084 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=78435, PETRI_DIFFERENCE_MINUEND_PLACES=1159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2915, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=82624, PETRI_PLACES=1197, PETRI_TRANSITIONS=2996} [2021-06-11 20:46:58,084 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1144 predicate places. [2021-06-11 20:46:58,084 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:46:58,084 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1197 places, 2996 transitions, 82624 flow [2021-06-11 20:46:58,084 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1197 places, 2996 transitions, 82624 flow [2021-06-11 20:46:58,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1197 places, 2996 transitions, 82624 flow [2021-06-11 20:47:01,408 INFO L129 PetriNetUnfolder]: 3753/8007 cut-off events. [2021-06-11 20:47:01,408 INFO L130 PetriNetUnfolder]: For 311742/312183 co-relation queries the response was YES. [2021-06-11 20:47:01,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84766 conditions, 8007 events. 3753/8007 cut-off events. For 311742/312183 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 74488 event pairs, 95 based on Foata normal form. 44/6795 useless extension candidates. Maximal degree in co-relation 84357. Up to 2344 conditions per place. [2021-06-11 20:47:01,705 INFO L151 LiptonReduction]: Number of co-enabled transitions 17206 [2021-06-11 20:47:02,863 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:47:02,863 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:47:02,864 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4780 [2021-06-11 20:47:02,864 INFO L480 AbstractCegarLoop]: Abstraction has has 1197 places, 2996 transitions, 82624 flow [2021-06-11 20:47:02,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 49.15384615384615) internal successors, (639), 13 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:47:02,864 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:47:02,864 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] [2021-06-11 20:47:02,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-11 20:47:02,864 INFO L428 AbstractCegarLoop]: === Iteration 86 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:47:02,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:47:02,865 INFO L82 PathProgramCache]: Analyzing trace with hash 205224099, now seen corresponding path program 27 times [2021-06-11 20:47:02,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:47:02,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554597835] [2021-06-11 20:47:02,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:47:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:47:02,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:02,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:47:02,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:02,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:47:02,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:02,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:02,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:02,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:47:02,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:02,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:47:02,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:02,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:02,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:02,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:02,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:02,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:47:02,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:02,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:02,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:02,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:02,995 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:47:02,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:47:03,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:47:03,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:47:03,030 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:47:03,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:47:03,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554597835] [2021-06-11 20:47:03,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:47:03,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:47:03,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240470857] [2021-06-11 20:47:03,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:47:03,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:47:03,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:47:03,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:47:03,034 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:47:03,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1197 places, 2996 transitions, 82624 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:47:03,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:47:03,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:47:03,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:47:10,515 INFO L129 PetriNetUnfolder]: 4395/8930 cut-off events. [2021-06-11 20:47:10,515 INFO L130 PetriNetUnfolder]: For 468665/468673 co-relation queries the response was YES. [2021-06-11 20:47:10,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104743 conditions, 8930 events. 4395/8930 cut-off events. For 468665/468673 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 79627 event pairs, 389 based on Foata normal form. 9/7824 useless extension candidates. Maximal degree in co-relation 104336. Up to 5074 conditions per place. [2021-06-11 20:47:10,800 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2329 selfloop transitions, 739 changer transitions 0/3086 dead transitions. [2021-06-11 20:47:10,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1228 places, 3086 transitions, 91412 flow [2021-06-11 20:47:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-11 20:47:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-06-11 20:47:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1710 transitions. [2021-06-11 20:47:10,802 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5625 [2021-06-11 20:47:10,802 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1710 transitions. [2021-06-11 20:47:10,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1710 transitions. [2021-06-11 20:47:10,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:47:10,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1710 transitions. [2021-06-11 20:47:10,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.4375) internal successors, (1710), 32 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:47:10,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 95.0) internal successors, (3135), 33 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:47:10,805 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 95.0) internal successors, (3135), 33 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:47:10,805 INFO L185 Difference]: Start difference. First operand has 1197 places, 2996 transitions, 82624 flow. Second operand 32 states and 1710 transitions. [2021-06-11 20:47:10,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1228 places, 3086 transitions, 91412 flow [2021-06-11 20:47:16,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1217 places, 3086 transitions, 90349 flow, removed 259 selfloop flow, removed 11 redundant places. [2021-06-11 20:47:16,414 INFO L241 Difference]: Finished difference. Result has 1225 places, 3038 transitions, 84720 flow [2021-06-11 20:47:16,415 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=81561, PETRI_DIFFERENCE_MINUEND_PLACES=1186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2996, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=698, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=84720, PETRI_PLACES=1225, PETRI_TRANSITIONS=3038} [2021-06-11 20:47:16,415 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1172 predicate places. [2021-06-11 20:47:16,415 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:47:16,416 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1225 places, 3038 transitions, 84720 flow [2021-06-11 20:47:16,416 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1225 places, 3038 transitions, 84720 flow [2021-06-11 20:47:16,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1225 places, 3038 transitions, 84720 flow [2021-06-11 20:47:17,756 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][120], [1027#true, 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1))), Black: 3044#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 3060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 3062#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 3078#(and (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), Black: 3080#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 3082#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), 23#L62true, Black: 4112#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 4089#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1))), Black: 4122#(and (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), Black: 4124#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 4126#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), 4133#true, 47#thread2EXITtrue, Black: 2070#(and (<= temp_4 temp_10) (< x_0 (+ x_6 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 2090#(and (<= x_6 (+ temp_5 1)) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), Black: 1056#(and (<= temp_5 x_6) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= y_7 temp_4) (= x_6 x_0)), 2111#true, Black: 1060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 1029#(and (= y_1 y_7) (= x_6 x_0)), Black: 1064#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1068#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), 69#L73true, Black: 1054#(and (<= temp_5 x_6) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (= x_6 x_0)), Black: 3105#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), 70#thread3EXITtrue, Black: 3140#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), 1095#true, 3144#true, Black: 4163#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= x_0 (+ x_6 1))), Black: 4165#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 4167#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 4155#(and (<= x_0 x_6) (<= (+ temp_10 1) y_1) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0) (<= y_1 (+ temp_10 1))), Black: 86#(not f2_9), Black: 91#(not f1_2), Black: 96#(not f1_8), Black: 2146#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 2122#(and (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2142#(and (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 101#(not f2_3), 104#true, Black: 3185#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= x_0 (+ x_6 1))), Black: 3154#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1))), Black: 3187#(and (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), Black: 1120#(and (<= temp_5 x_6) (< x_0 (+ x_6 1)) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 3171#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 3189#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 1105#(and (<= temp_5 x_6) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 3157#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 1108#(and (< x_0 (+ x_6 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 3191#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 3183#(and (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1))), 3201#true, Black: 1132#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), Black: 4208#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_7 temp_4)), Black: 4224#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 4183#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_10 temp_4) (<= x_6 temp_5)), Black: 4218#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), 4230#true, Black: 129#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ y_1 1)) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), Black: 114#(and (<= y_7 (+ temp_5 2)) (<= (+ temp_5 2) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 115#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ y_1 1)) (<= (+ temp_5 1) x_6) (<= (+ y_1 1) y_7)), Black: 121#(and (<= temp_10 (+ y_1 1)) (<= y_7 (+ y_1 2)) (<= (+ y_1 2) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= (+ y_1 1) temp_10)), Black: 106#(and (= y_1 y_7) (= x_6 x_0)), Black: 2163#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 139#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 109#(and (<= y_7 (+ y_1 1)) (<= (+ x_0 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), Black: 125#(and (<= y_7 (+ temp_5 2)) (<= y_7 (+ y_1 1)) (<= (+ temp_5 2) y_7) (<= (+ x_0 1) x_6) (<= (+ y_1 1) y_7) (<= x_6 (+ x_0 1))), 150#true, Black: 4258#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 4244#(and (<= temp_5 x_6) (<= x_0 x_6) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0)), Black: 4246#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_0 (+ x_6 1))), Black: 4262#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= x_0 (+ x_6 1))), 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Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:47:17,757 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:47:17,757 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:47:17,757 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:47:17,757 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:47:17,757 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([179] L73-->thread6EXIT: Formula: (= (+ v_temp_11_21 1) v_x_6_20) InVars {temp_11=v_temp_11_21} OutVars{temp_11=v_temp_11_21, x_6=v_x_6_20} AuxVars[] AssignedVars[x_6][2742], [1027#true, 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1))), Black: 3044#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 3060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 3062#(and (<= temp_5 x_6) (<= temp_4 y_7) 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temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:47:17,757 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:47:17,757 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:47:17,757 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:47:17,757 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:47:18,385 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([182] L62-->thread5EXIT: Formula: (= (+ v_temp_10_23 1) v_y_7_24) InVars {temp_10=v_temp_10_23} OutVars{temp_10=v_temp_10_23, y_7=v_y_7_24} AuxVars[] AssignedVars[y_7][327], [1027#true, 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1))), Black: 3044#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 3060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 3062#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 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y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), Black: 871#(and (<= temp_5 x_6) (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= x_6 x_0) (<= y_7 temp_4)), Black: 858#(and (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= y_7 temp_4)), Black: 875#(and (<= temp_5 x_6) (= y_1 y_7) (<= temp_4 y_7) (<= x_6 temp_5) (<= y_7 temp_4) (= x_6 x_0)), 1940#true, Black: 2960#(and (= y_1 y_7) (<= (+ temp_10 1) y_1) (<= y_1 (+ temp_10 1)) (= x_6 x_0)), Black: 2962#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 2964#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 2949#(and (<= x_0 x_6) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= x_6 x_0)), Black: 2951#(and (<= y_1 y_7) (<= (+ x_0 1) x_6) (< y_7 (+ y_1 1)) (<= x_6 (+ x_0 1))), Black: 4005#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1))), Black: 1986#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 1974#(and (<= x_0 temp_11) (<= x_6 (+ temp_5 1)) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), Black: 918#(and (<= x_0 x_6) (<= temp_4 y_7) (<= x_6 x_0) (<= y_7 temp_4)), Black: 1980#(and (<= x_0 x_6) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0) (<= (+ temp_5 1) x_6)), Black: 1966#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), 1992#true, Black: 3024#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 3008#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_4 y_7) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_7 temp_4)), Black: 2981#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_10 temp_4) (<= x_6 temp_5)), Black: 2984#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 3020#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), 3031#true, Black: 4066#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= temp_10 temp_4) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), Black: 4072#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), Black: 4025#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_10 temp_4) (<= x_6 temp_5)), 4077#true, Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:47:18,385 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is not cut-off event [2021-06-11 20:47:18,385 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:47:18,385 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:47:18,385 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:47:19,594 INFO L129 PetriNetUnfolder]: 3805/8117 cut-off events. [2021-06-11 20:47:19,594 INFO L130 PetriNetUnfolder]: For 318039/318594 co-relation queries the response was YES. [2021-06-11 20:47:20,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86760 conditions, 8117 events. 3805/8117 cut-off events. For 318039/318594 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 75688 event pairs, 98 based on Foata normal form. 76/6909 useless extension candidates. Maximal degree in co-relation 86342. Up to 2369 conditions per place. [2021-06-11 20:47:20,327 INFO L151 LiptonReduction]: Number of co-enabled transitions 17612 [2021-06-11 20:47:21,529 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:47:21,529 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:47:21,529 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5114 [2021-06-11 20:47:21,529 INFO L480 AbstractCegarLoop]: Abstraction has has 1225 places, 3038 transitions, 84720 flow [2021-06-11 20:47:21,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:47:21,529 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:47:21,530 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] [2021-06-11 20:47:21,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-11 20:47:21,530 INFO L428 AbstractCegarLoop]: === Iteration 87 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:47:21,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:47:21,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1875804329, now seen corresponding path program 28 times [2021-06-11 20:47:21,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:47:21,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930691455] [2021-06-11 20:47:21,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:47:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:47:21,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:21,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:47:21,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:21,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:47:21,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:21,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:21,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:21,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:47:21,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:21,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:47:21,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:21,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:21,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:21,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:21,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:21,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:47:21,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:21,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:47:21,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:21,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:21,650 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:47:21,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:47:21,667 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:47:21,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:47:21,686 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:47:21,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:47:21,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930691455] [2021-06-11 20:47:21,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:47:21,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:47:21,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035140197] [2021-06-11 20:47:21,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:47:21,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:47:21,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:47:21,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:47:21,690 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:47:21,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1225 places, 3038 transitions, 84720 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:47:21,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:47:21,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:47:21,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:47:29,338 INFO L129 PetriNetUnfolder]: 4453/9106 cut-off events. [2021-06-11 20:47:29,338 INFO L130 PetriNetUnfolder]: For 469325/469327 co-relation queries the response was YES. [2021-06-11 20:47:29,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106005 conditions, 9106 events. 4453/9106 cut-off events. For 469325/469327 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 81965 event pairs, 410 based on Foata normal form. 3/7939 useless extension candidates. Maximal degree in co-relation 105589. Up to 5136 conditions per place. [2021-06-11 20:47:29,638 INFO L132 encePairwiseOnDemand]: 79/95 looper letters, 2374 selfloop transitions, 699 changer transitions 0/3091 dead transitions. [2021-06-11 20:47:29,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1257 places, 3091 transitions, 92303 flow [2021-06-11 20:47:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-11 20:47:29,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-06-11 20:47:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1750 transitions. [2021-06-11 20:47:29,640 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5582137161084529 [2021-06-11 20:47:29,640 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1750 transitions. [2021-06-11 20:47:29,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1750 transitions. [2021-06-11 20:47:29,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 20:47:29,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1750 transitions. [2021-06-11 20:47:29,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.03030303030303) internal successors, (1750), 33 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:47:29,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 95.0) internal successors, (3230), 34 states have internal predecessors, (3230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:47:29,642 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 95.0) internal successors, (3230), 34 states have internal predecessors, (3230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:47:29,642 INFO L185 Difference]: Start difference. First operand has 1225 places, 3038 transitions, 84720 flow. Second operand 33 states and 1750 transitions. [2021-06-11 20:47:29,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1257 places, 3091 transitions, 92303 flow [2021-06-11 20:47:34,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1234 places, 3091 transitions, 91379 flow, removed 95 selfloop flow, removed 23 redundant places. [2021-06-11 20:47:34,961 INFO L241 Difference]: Finished difference. Result has 1237 places, 3048 transitions, 85699 flow [2021-06-11 20:47:34,962 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=83804, PETRI_DIFFERENCE_MINUEND_PLACES=1202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3038, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=689, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=85699, PETRI_PLACES=1237, PETRI_TRANSITIONS=3048} [2021-06-11 20:47:34,962 INFO L343 CegarLoopForPetriNet]: 53 programPoint places, 1184 predicate places. [2021-06-11 20:47:34,962 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 20:47:34,962 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1237 places, 3048 transitions, 85699 flow [2021-06-11 20:47:34,962 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 1237 places, 3048 transitions, 85699 flow [2021-06-11 20:47:34,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1237 places, 3048 transitions, 85699 flow [2021-06-11 20:47:36,283 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([184] L41-->thread3EXIT: Formula: (= (+ v_temp_5_11 1) v_x_0_16) InVars {temp_5=v_temp_5_11} OutVars{temp_5=v_temp_5_11, x_0=v_x_0_16} AuxVars[] AssignedVars[x_0][121], [1027#true, 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1))), Black: 3044#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 3060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 3062#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4)), Black: 3078#(and (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), Black: 3080#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 3082#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), 23#L62true, Black: 4112#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 4089#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1))), Black: 4122#(and (<= temp_5 x_6) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1))), Black: 4124#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_1 (+ temp_10 1)) (< y_7 (+ y_1 1)) (<= x_0 (+ x_6 1))), Black: 4126#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1)) (= x_6 x_0)), 4133#true, 47#thread2EXITtrue, Black: 2070#(and (<= temp_4 temp_10) (< x_0 (+ x_6 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 2090#(and (<= x_6 (+ temp_5 1)) (<= temp_4 y_7) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6) (<= y_7 temp_4)), Black: 1056#(and (<= temp_5 x_6) (<= temp_4 y_7) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= x_6 temp_5) (<= y_7 temp_4) (= x_6 x_0)), 2111#true, Black: 1060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= x_0 (+ x_6 1))), Black: 1029#(and (= y_1 y_7) (= x_6 x_0)), Black: 1064#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= y_7 y_1) (<= x_6 temp_5) (<= y_1 y_7) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 1068#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 y_1) (<= temp_11 temp_5) (<= temp_5 temp_11) (<= (+ temp_5 1) x_6)), 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(<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:47:36,284 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:47:36,284 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:47:36,284 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:47:36,284 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:47:36,284 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([179] L73-->thread6EXIT: Formula: (= (+ v_temp_11_21 1) v_x_6_20) InVars {temp_11=v_temp_11_21} OutVars{temp_11=v_temp_11_21, x_6=v_x_6_20} AuxVars[] AssignedVars[x_6][2756], [1027#true, 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1))), Black: 3044#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 1))), Black: 3060#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= x_6 temp_5) (<= 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(<= x_6 temp_5)), 4077#true, Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:47:36,284 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2021-06-11 20:47:36,284 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:47:36,284 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:47:36,284 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-11 20:47:36,910 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([182] L62-->thread5EXIT: Formula: (= (+ v_temp_10_23 1) v_y_7_24) InVars {temp_10=v_temp_10_23} OutVars{temp_10=v_temp_10_23, y_7=v_y_7_24} AuxVars[] AssignedVars[y_7][333], [1027#true, 6#L91true, Black: 3072#(and (<= temp_5 x_6) (<= (+ x_6 1) x_0) (<= temp_4 y_7) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_7 temp_4) (<= x_0 (+ x_6 1))), Black: 3074#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= (+ temp_10 1) y_1) (<= x_6 temp_5) (<= (+ y_7 1) y_1) (<= y_1 (+ y_7 1)) (<= y_1 (+ temp_10 1)) (<= y_7 temp_4)), Black: 3043#(and (<= temp_5 x_6) (<= x_6 temp_5) (<= y_1 y_7) (< y_7 (+ y_1 1))), Black: 3044#(and (<= x_6 (+ temp_5 1)) (<= y_1 y_7) (<= (+ temp_5 1) x_6) (< y_7 (+ y_1 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(<= y_7 temp_4)), Black: 790#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= y_7 temp_4)), Black: 3879#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 3916#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), 848#true, Black: 2929#(and (< x_0 (+ x_6 1)) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= x_6 x_0) (<= (+ temp_5 1) x_6)), Black: 2931#(and (= y_1 y_7) (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 2919#(and (<= temp_4 temp_10) (<= temp_5 x_6) (< x_0 (+ x_6 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7) (<= x_6 x_0)), Black: 2921#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= x_6 temp_5) (<= (+ temp_4 1) y_7)), Black: 2891#(and (<= temp_5 x_6) (<= temp_4 y_7) (<= x_6 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4025#(and (<= temp_4 temp_10) (<= temp_5 x_6) (<= temp_10 temp_4) (<= x_6 temp_5)), 4077#true, Black: 2032#(and (<= x_6 (+ temp_5 1)) (< y_1 (+ y_7 1)) (<= y_7 (+ temp_4 1)) (<= y_7 y_1) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6) (= x_6 x_0)), Black: 2020#(and (<= x_0 temp_11) (<= temp_11 x_0) (<= temp_4 y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1)) (<= y_7 temp_4)), Black: 2005#(and (<= x_6 (+ temp_5 1)) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ temp_5 1) x_6)), Black: 2024#(and (<= temp_4 temp_10) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= x_6 (+ x_0 1))), Black: 2026#(and (<= temp_4 temp_10) (<= x_6 (+ temp_5 1)) (<= temp_10 temp_4) (<= y_7 (+ temp_4 1)) (<= (+ temp_4 1) y_7) (<= (+ x_0 1) x_6) (<= (+ temp_5 1) x_6) (<= x_6 (+ x_0 1))), 2039#true]) [2021-06-11 20:47:36,911 INFO L384 tUnfolder$Statistics]: this new event has 19 ancestors and is not cut-off event [2021-06-11 20:47:36,911 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:47:36,911 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:47:36,911 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-06-11 20:47:38,531 INFO L129 PetriNetUnfolder]: 3813/8177 cut-off events. [2021-06-11 20:47:38,531 INFO L130 PetriNetUnfolder]: For 323649/324173 co-relation queries the response was YES. [2021-06-11 20:47:38,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87517 conditions, 8177 events. 3813/8177 cut-off events. For 323649/324173 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 76957 event pairs, 99 based on Foata normal form. 76/6961 useless extension candidates. Maximal degree in co-relation 87097. Up to 2371 conditions per place. [2021-06-11 20:47:38,852 INFO L151 LiptonReduction]: Number of co-enabled transitions 17714 [2021-06-11 20:47:40,059 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 20:47:40,059 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 20:47:40,059 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5097 [2021-06-11 20:47:40,059 INFO L480 AbstractCegarLoop]: Abstraction has has 1237 places, 3048 transitions, 85699 flow [2021-06-11 20:47:40,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:47:40,060 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 20:47:40,060 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] [2021-06-11 20:47:40,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-11 20:47:40,060 INFO L428 AbstractCegarLoop]: === Iteration 88 === [thread4Err1INUSE_VIOLATION, thread4Thread1of1ForFork4Err5INUSE_VIOLATION, thread1Err8INUSE_VIOLATION, thread1Err7INUSE_VIOLATION, thread4Thread1of1ForFork4Err6INUSE_VIOLATION, thread4Err9INUSE_VIOLATION, thread1Thread1of1ForFork2Err2INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread1Thread1of1ForFork2Err3INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-11 20:47:40,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 20:47:40,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1042414417, now seen corresponding path program 29 times [2021-06-11 20:47:40,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 20:47:40,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497591845] [2021-06-11 20:47:40,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 20:47:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 20:47:40,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:40,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 20:47:40,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:40,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 20:47:40,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:40,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:40,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:40,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:47:40,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:40,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 20:47:40,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:40,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:40,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:40,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:40,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:40,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 20:47:40,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:40,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:40,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 20:47:40,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:40,181 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-11 20:47:40,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 20:47:40,199 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-11 20:47:40,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 20:47:40,218 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-11 20:47:40,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 20:47:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 20:47:40,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497591845] [2021-06-11 20:47:40,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 20:47:40,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-11 20:47:40,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466718685] [2021-06-11 20:47:40,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-11 20:47:40,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 20:47:40,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-11 20:47:40,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-06-11 20:47:40,221 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2021-06-11 20:47:40,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1237 places, 3048 transitions, 85699 flow. Second operand has 14 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 20:47:40,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 20:47:40,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2021-06-11 20:47:40,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 20:47:47,835 INFO L129 PetriNetUnfolder]: 4476/9128 cut-off events. [2021-06-11 20:47:47,835 INFO L130 PetriNetUnfolder]: For 477872/477874 co-relation queries the response was YES.