/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 04:06:49,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 04:06:49,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 04:06:49,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 04:06:49,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 04:06:49,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 04:06:49,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 04:06:49,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 04:06:49,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 04:06:49,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 04:06:49,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 04:06:49,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 04:06:49,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 04:06:49,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 04:06:49,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 04:06:49,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 04:06:49,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 04:06:49,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 04:06:49,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 04:06:49,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 04:06:49,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 04:06:49,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 04:06:49,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 04:06:49,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 04:06:49,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 04:06:49,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 04:06:49,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 04:06:49,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 04:06:49,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 04:06:49,481 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 04:06:49,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 04:06:49,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 04:06:49,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 04:06:49,487 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 04:06:49,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 04:06:49,487 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 04:06:49,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 04:06:49,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 04:06:49,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 04:06:49,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 04:06:49,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 04:06:49,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 04:06:49,490 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 04:06:49,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 04:06:49,490 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 04:06:49,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 04:06:49,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 04:06:49,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 04:06:49,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 04:06:49,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 04:06:49,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 04:06:49,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 04:06:49,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 04:06:49,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 04:06:49,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 04:06:49,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 04:06:49,493 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 04:06:49,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 04:06:49,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 04:06:49,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 04:06:49,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 04:06:49,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 04:06:49,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 04:06:49,908 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 04:06:49,909 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 04:06:49,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl [2021-04-29 04:06:49,911 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl' [2021-04-29 04:06:49,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 04:06:49,999 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 04:06:50,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 04:06:50,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 04:06:50,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 04:06:50,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:06:49" (1/1) ... [2021-04-29 04:06:50,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:06:49" (1/1) ... [2021-04-29 04:06:50,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 04:06:50,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 04:06:50,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 04:06:50,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 04:06:50,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:06:49" (1/1) ... [2021-04-29 04:06:50,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:06:49" (1/1) ... [2021-04-29 04:06:50,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:06:49" (1/1) ... [2021-04-29 04:06:50,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:06:49" (1/1) ... [2021-04-29 04:06:50,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:06:49" (1/1) ... [2021-04-29 04:06:50,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:06:49" (1/1) ... [2021-04-29 04:06:50,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:06:49" (1/1) ... [2021-04-29 04:06:50,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 04:06:50,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 04:06:50,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 04:06:50,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 04:06:50,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:06:49" (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 [2021-04-29 04:06:50,161 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-04-29 04:06:50,164 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-04-29 04:06:50,165 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-04-29 04:06:50,165 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-04-29 04:06:50,165 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-04-29 04:06:50,165 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-04-29 04:06:50,165 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-04-29 04:06:50,166 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-04-29 04:06:50,166 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-04-29 04:06:50,166 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-04-29 04:06:50,166 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-04-29 04:06:50,166 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-04-29 04:06:50,167 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 04:06:50,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 04:06:50,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 04:06:50,170 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 04:06:50,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 04:06:50,348 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-29 04:06:50,350 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 04:06:50 BoogieIcfgContainer [2021-04-29 04:06:50,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 04:06:50,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 04:06:50,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 04:06:50,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 04:06:50,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 04:06:49" (1/2) ... [2021-04-29 04:06:50,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff5975d and model type example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 04:06:50, skipping insertion in model container [2021-04-29 04:06:50,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 04:06:50" (2/2) ... [2021-04-29 04:06:50,361 INFO L111 eAbstractionObserver]: Analyzing ICFG example_4.bpl [2021-04-29 04:06:50,368 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 04:06:50,373 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 04:06:50,374 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 04:06:50,441 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-04-29 04:06:50,479 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-04-29 04:06:50,542 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 04:06:50,542 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 04:06:50,542 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 04:06:50,542 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 04:06:50,543 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 04:06:50,543 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 04:06:50,543 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 04:06:50,543 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 04:06:50,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions, 138 flow [2021-04-29 04:06:50,609 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2021-04-29 04:06:50,610 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-04-29 04:06:50,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 47 events. 17/47 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2021-04-29 04:06:50,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 35 transitions, 138 flow [2021-04-29 04:06:50,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 29 transitions, 118 flow [2021-04-29 04:06:50,624 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:50,642 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 29 transitions, 118 flow [2021-04-29 04:06:50,646 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 29 transitions, 118 flow [2021-04-29 04:06:50,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 29 transitions, 118 flow [2021-04-29 04:06:50,685 INFO L129 PetriNetUnfolder]: 17/45 cut-off events. [2021-04-29 04:06:50,685 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-04-29 04:06:50,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 45 events. 17/45 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2021-04-29 04:06:50,692 INFO L146 LiptonReduction]: Number of co-enabled transitions 216 [2021-04-29 04:06:50,774 INFO L158 LiptonReduction]: Checked pairs total: 66 [2021-04-29 04:06:50,774 INFO L160 LiptonReduction]: Total number of compositions: 4 [2021-04-29 04:06:50,781 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 159 [2021-04-29 04:06:50,809 INFO L129 PetriNetUnfolder]: 17/44 cut-off events. [2021-04-29 04:06:50,810 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-04-29 04:06:50,810 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:50,811 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:50,811 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:50,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:50,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1888322031, now seen corresponding path program 1 times [2021-04-29 04:06:50,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:50,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206385506] [2021-04-29 04:06:50,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:50,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:50,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:51,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:51,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:06:51,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:51,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:51,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206385506] [2021-04-29 04:06:51,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:51,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:06:51,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393245461] [2021-04-29 04:06:51,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:06:51,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:51,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:06:51,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:06:51,066 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2021-04-29 04:06:51,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:51,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2021-04-29 04:06:51,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:51,118 INFO L129 PetriNetUnfolder]: 14/41 cut-off events. [2021-04-29 04:06:51,119 INFO L130 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2021-04-29 04:06:51,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 41 events. 14/41 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 87 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 39. Up to 12 conditions per place. [2021-04-29 04:06:51,122 INFO L132 encePairwiseOnDemand]: 37/39 looper letters, 3 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2021-04-29 04:06:51,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 121 flow [2021-04-29 04:06:51,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:06:51,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:06:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2021-04-29 04:06:51,139 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9145299145299145 [2021-04-29 04:06:51,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2021-04-29 04:06:51,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2021-04-29 04:06:51,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:51,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2021-04-29 04:06:51,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,156 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,158 INFO L185 Difference]: Start difference. First operand has 30 places, 29 transitions, 118 flow. Second operand 3 states and 107 transitions. [2021-04-29 04:06:51,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 121 flow [2021-04-29 04:06:51,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 28 transitions, 83 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-04-29 04:06:51,168 INFO L241 Difference]: Finished difference. Result has 24 places, 28 transitions, 77 flow [2021-04-29 04:06:51,170 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=24, PETRI_TRANSITIONS=28} [2021-04-29 04:06:51,171 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, -6 predicate places. [2021-04-29 04:06:51,172 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:51,172 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 28 transitions, 77 flow [2021-04-29 04:06:51,173 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 28 transitions, 77 flow [2021-04-29 04:06:51,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 28 transitions, 77 flow [2021-04-29 04:06:51,186 INFO L129 PetriNetUnfolder]: 14/41 cut-off events. [2021-04-29 04:06:51,186 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:06:51,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 41 events. 14/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 97 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2021-04-29 04:06:51,187 INFO L146 LiptonReduction]: Number of co-enabled transitions 204 [2021-04-29 04:06:51,193 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:51,193 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:51,193 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21 [2021-04-29 04:06:51,195 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 28 transitions, 77 flow [2021-04-29 04:06:51,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,196 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:51,196 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:51,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 04:06:51,197 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:51,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:51,198 INFO L82 PathProgramCache]: Analyzing trace with hash 497827131, now seen corresponding path program 1 times [2021-04-29 04:06:51,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:51,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648705574] [2021-04-29 04:06:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:51,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:51,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:51,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:51,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:06:51,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:51,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:51,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648705574] [2021-04-29 04:06:51,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:51,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:06:51,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123978446] [2021-04-29 04:06:51,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:06:51,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:51,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:06:51,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:06:51,233 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2021-04-29 04:06:51,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 28 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:51,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2021-04-29 04:06:51,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:51,262 INFO L129 PetriNetUnfolder]: 6/29 cut-off events. [2021-04-29 04:06:51,264 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-04-29 04:06:51,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 29 events. 6/29 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 3/28 useless extension candidates. Maximal degree in co-relation 34. Up to 6 conditions per place. [2021-04-29 04:06:51,265 INFO L132 encePairwiseOnDemand]: 36/39 looper letters, 2 selfloop transitions, 1 changer transitions 2/26 dead transitions. [2021-04-29 04:06:51,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 77 flow [2021-04-29 04:06:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:06:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:06:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2021-04-29 04:06:51,272 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9145299145299145 [2021-04-29 04:06:51,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2021-04-29 04:06:51,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2021-04-29 04:06:51,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:51,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2021-04-29 04:06:51,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,280 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,281 INFO L185 Difference]: Start difference. First operand has 24 places, 28 transitions, 77 flow. Second operand 3 states and 107 transitions. [2021-04-29 04:06:51,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 77 flow [2021-04-29 04:06:51,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:06:51,285 INFO L241 Difference]: Finished difference. Result has 25 places, 24 transitions, 68 flow [2021-04-29 04:06:51,286 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2021-04-29 04:06:51,289 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2021-04-29 04:06:51,291 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:51,291 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 24 transitions, 68 flow [2021-04-29 04:06:51,292 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 24 transitions, 68 flow [2021-04-29 04:06:51,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 24 transitions, 68 flow [2021-04-29 04:06:51,309 INFO L129 PetriNetUnfolder]: 6/27 cut-off events. [2021-04-29 04:06:51,309 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:06:51,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 27 events. 6/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 28. Up to 6 conditions per place. [2021-04-29 04:06:51,310 INFO L146 LiptonReduction]: Number of co-enabled transitions 108 [2021-04-29 04:06:51,316 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:51,317 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:51,317 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-04-29 04:06:51,321 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 24 transitions, 68 flow [2021-04-29 04:06:51,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,321 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:51,322 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:51,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 04:06:51,322 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:51,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:51,323 INFO L82 PathProgramCache]: Analyzing trace with hash -16793751, now seen corresponding path program 1 times [2021-04-29 04:06:51,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:51,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240781199] [2021-04-29 04:06:51,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:51,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:51,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:51,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:51,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 04:06:51,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:51,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:51,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240781199] [2021-04-29 04:06:51,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:51,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 04:06:51,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182000515] [2021-04-29 04:06:51,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 04:06:51,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:51,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 04:06:51,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 04:06:51,378 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2021-04-29 04:06:51,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 24 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:51,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2021-04-29 04:06:51,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:51,389 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-04-29 04:06:51,389 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-29 04:06:51,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 15 events. 0/15 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 21 event pairs, 0 based on Foata normal form. 3/16 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 04:06:51,390 INFO L132 encePairwiseOnDemand]: 35/39 looper letters, 1 selfloop transitions, 1 changer transitions 2/15 dead transitions. [2021-04-29 04:06:51,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 15 transitions, 45 flow [2021-04-29 04:06:51,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 04:06:51,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 04:06:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2021-04-29 04:06:51,392 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9145299145299145 [2021-04-29 04:06:51,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2021-04-29 04:06:51,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2021-04-29 04:06:51,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:51,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2021-04-29 04:06:51,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,395 INFO L185 Difference]: Start difference. First operand has 23 places, 24 transitions, 68 flow. Second operand 3 states and 107 transitions. [2021-04-29 04:06:51,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 15 transitions, 45 flow [2021-04-29 04:06:51,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 15 transitions, 44 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:06:51,397 INFO L241 Difference]: Finished difference. Result has 24 places, 13 transitions, 38 flow [2021-04-29 04:06:51,397 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=24, PETRI_TRANSITIONS=13} [2021-04-29 04:06:51,397 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, -6 predicate places. [2021-04-29 04:06:51,398 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:51,398 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 13 transitions, 38 flow [2021-04-29 04:06:51,398 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 13 transitions, 38 flow [2021-04-29 04:06:51,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 13 transitions, 38 flow [2021-04-29 04:06:51,402 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-04-29 04:06:51,403 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:06:51,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 13 events. 0/13 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 6 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-04-29 04:06:51,403 INFO L146 LiptonReduction]: Number of co-enabled transitions 36 [2021-04-29 04:06:51,404 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:51,405 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:51,405 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-04-29 04:06:51,406 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 13 transitions, 38 flow [2021-04-29 04:06:51,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,407 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:51,407 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:51,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 04:06:51,407 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:51,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:51,408 INFO L82 PathProgramCache]: Analyzing trace with hash -143580335, now seen corresponding path program 1 times [2021-04-29 04:06:51,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:51,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819188152] [2021-04-29 04:06:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:51,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:51,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:51,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:51,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:51,535 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-04-29 04:06:51,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-29 04:06:51,568 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:51,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:51,610 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:51,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:51,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819188152] [2021-04-29 04:06:51,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:51,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:51,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712324451] [2021-04-29 04:06:51,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:51,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:51,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:51,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:51,662 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:51,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 13 transitions, 38 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:51,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:51,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:51,760 INFO L129 PetriNetUnfolder]: 15/61 cut-off events. [2021-04-29 04:06:51,761 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:06:51,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 61 events. 15/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 220 event pairs, 5 based on Foata normal form. 1/57 useless extension candidates. Maximal degree in co-relation 103. Up to 17 conditions per place. [2021-04-29 04:06:51,762 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 9 selfloop transitions, 3 changer transitions 1/21 dead transitions. [2021-04-29 04:06:51,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 80 flow [2021-04-29 04:06:51,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:51,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:51,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-04-29 04:06:51,765 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-04-29 04:06:51,766 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-04-29 04:06:51,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-04-29 04:06:51,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:51,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-04-29 04:06:51,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,770 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,770 INFO L185 Difference]: Start difference. First operand has 22 places, 13 transitions, 38 flow. Second operand 6 states and 188 transitions. [2021-04-29 04:06:51,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 80 flow [2021-04-29 04:06:51,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 79 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 04:06:51,772 INFO L241 Difference]: Finished difference. Result has 30 places, 15 transitions, 60 flow [2021-04-29 04:06:51,772 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=15} [2021-04-29 04:06:51,772 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2021-04-29 04:06:51,773 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:51,773 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 15 transitions, 60 flow [2021-04-29 04:06:51,773 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 15 transitions, 60 flow [2021-04-29 04:06:51,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 15 transitions, 60 flow [2021-04-29 04:06:51,779 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-04-29 04:06:51,780 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-04-29 04:06:51,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 27 events. 0/27 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 04:06:51,780 INFO L146 LiptonReduction]: Number of co-enabled transitions 40 [2021-04-29 04:06:51,782 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:51,782 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:51,782 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-04-29 04:06:51,783 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 15 transitions, 60 flow [2021-04-29 04:06:51,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,784 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:51,784 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:51,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 04:06:51,784 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:51,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:51,785 INFO L82 PathProgramCache]: Analyzing trace with hash -816343229, now seen corresponding path program 2 times [2021-04-29 04:06:51,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:51,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125180804] [2021-04-29 04:06:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:51,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:51,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:51,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:51,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:51,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:51,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 04:06:51,843 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-04-29 04:06:51,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 04:06:51,866 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:51,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:51,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125180804] [2021-04-29 04:06:51,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:51,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:51,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978108689] [2021-04-29 04:06:51,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:51,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:51,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:51,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:51,893 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:51,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 15 transitions, 60 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:51,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:51,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:51,962 INFO L129 PetriNetUnfolder]: 13/79 cut-off events. [2021-04-29 04:06:51,962 INFO L130 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2021-04-29 04:06:51,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 79 events. 13/79 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 365 event pairs, 5 based on Foata normal form. 1/74 useless extension candidates. Maximal degree in co-relation 179. Up to 20 conditions per place. [2021-04-29 04:06:51,964 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 9 selfloop transitions, 5 changer transitions 1/23 dead transitions. [2021-04-29 04:06:51,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 23 transitions, 125 flow [2021-04-29 04:06:51,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:51,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-04-29 04:06:51,966 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-04-29 04:06:51,966 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-04-29 04:06:51,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-04-29 04:06:51,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:51,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-04-29 04:06:51,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,970 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,970 INFO L185 Difference]: Start difference. First operand has 29 places, 15 transitions, 60 flow. Second operand 6 states and 188 transitions. [2021-04-29 04:06:51,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 23 transitions, 125 flow [2021-04-29 04:06:51,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 115 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-04-29 04:06:51,973 INFO L241 Difference]: Finished difference. Result has 36 places, 17 transitions, 91 flow [2021-04-29 04:06:51,973 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=36, PETRI_TRANSITIONS=17} [2021-04-29 04:06:51,973 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2021-04-29 04:06:51,973 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:51,974 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 17 transitions, 91 flow [2021-04-29 04:06:51,974 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 17 transitions, 91 flow [2021-04-29 04:06:51,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 17 transitions, 91 flow [2021-04-29 04:06:51,983 INFO L129 PetriNetUnfolder]: 0/45 cut-off events. [2021-04-29 04:06:51,984 INFO L130 PetriNetUnfolder]: For 43/48 co-relation queries the response was YES. [2021-04-29 04:06:51,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 45 events. 0/45 cut-off events. For 43/48 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 167 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-04-29 04:06:51,985 INFO L146 LiptonReduction]: Number of co-enabled transitions 46 [2021-04-29 04:06:51,986 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:51,987 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:51,987 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-04-29 04:06:51,988 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 17 transitions, 91 flow [2021-04-29 04:06:51,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:51,989 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:51,989 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:51,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 04:06:51,989 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:51,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:51,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1388363837, now seen corresponding path program 3 times [2021-04-29 04:06:51,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:51,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822732022] [2021-04-29 04:06:51,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:52,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:52,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:52,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:52,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:52,075 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-04-29 04:06:52,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-29 04:06:52,090 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-04-29 04:06:52,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 04:06:52,114 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:52,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:52,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822732022] [2021-04-29 04:06:52,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:52,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:52,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432226158] [2021-04-29 04:06:52,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:52,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:52,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:52,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:52,139 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:52,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 17 transitions, 91 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:52,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:52,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:52,206 INFO L129 PetriNetUnfolder]: 12/93 cut-off events. [2021-04-29 04:06:52,206 INFO L130 PetriNetUnfolder]: For 165/167 co-relation queries the response was YES. [2021-04-29 04:06:52,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 93 events. 12/93 cut-off events. For 165/167 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 502 event pairs, 2 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 254. Up to 23 conditions per place. [2021-04-29 04:06:52,208 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 12 selfloop transitions, 6 changer transitions 3/29 dead transitions. [2021-04-29 04:06:52,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 29 transitions, 215 flow [2021-04-29 04:06:52,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:52,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:52,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-04-29 04:06:52,210 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-04-29 04:06:52,210 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-04-29 04:06:52,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-04-29 04:06:52,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:52,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-04-29 04:06:52,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,214 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,214 INFO L185 Difference]: Start difference. First operand has 35 places, 17 transitions, 91 flow. Second operand 6 states and 188 transitions. [2021-04-29 04:06:52,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 29 transitions, 215 flow [2021-04-29 04:06:52,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 197 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-04-29 04:06:52,218 INFO L241 Difference]: Finished difference. Result has 42 places, 20 transitions, 137 flow [2021-04-29 04:06:52,219 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=137, PETRI_PLACES=42, PETRI_TRANSITIONS=20} [2021-04-29 04:06:52,219 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2021-04-29 04:06:52,219 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:52,219 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 20 transitions, 137 flow [2021-04-29 04:06:52,220 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 20 transitions, 137 flow [2021-04-29 04:06:52,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 20 transitions, 137 flow [2021-04-29 04:06:52,228 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2021-04-29 04:06:52,228 INFO L130 PetriNetUnfolder]: For 86/97 co-relation queries the response was YES. [2021-04-29 04:06:52,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 51 events. 0/51 cut-off events. For 86/97 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 210 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-04-29 04:06:52,230 INFO L146 LiptonReduction]: Number of co-enabled transitions 58 [2021-04-29 04:06:52,232 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:52,232 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:52,232 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-04-29 04:06:52,233 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 137 flow [2021-04-29 04:06:52,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,234 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:52,234 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:52,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 04:06:52,235 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:52,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:52,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1903679499, now seen corresponding path program 4 times [2021-04-29 04:06:52,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:52,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811010694] [2021-04-29 04:06:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:52,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:52,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:52,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:52,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:52,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:52,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 04:06:52,289 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:52,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:52,309 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:52,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:52,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811010694] [2021-04-29 04:06:52,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:52,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:52,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415758005] [2021-04-29 04:06:52,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:52,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:52,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:52,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:52,332 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:52,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 137 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:52,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:52,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:52,399 INFO L129 PetriNetUnfolder]: 11/79 cut-off events. [2021-04-29 04:06:52,399 INFO L130 PetriNetUnfolder]: For 257/262 co-relation queries the response was YES. [2021-04-29 04:06:52,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 79 events. 11/79 cut-off events. For 257/262 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 369 event pairs, 5 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 262. Up to 21 conditions per place. [2021-04-29 04:06:52,400 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 11 selfloop transitions, 9 changer transitions 1/29 dead transitions. [2021-04-29 04:06:52,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 29 transitions, 242 flow [2021-04-29 04:06:52,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:52,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-04-29 04:06:52,403 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-04-29 04:06:52,403 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-04-29 04:06:52,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-04-29 04:06:52,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:52,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-04-29 04:06:52,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,406 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,406 INFO L185 Difference]: Start difference. First operand has 41 places, 20 transitions, 137 flow. Second operand 6 states and 188 transitions. [2021-04-29 04:06:52,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 29 transitions, 242 flow [2021-04-29 04:06:52,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 29 transitions, 221 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-04-29 04:06:52,411 INFO L241 Difference]: Finished difference. Result has 46 places, 23 transitions, 192 flow [2021-04-29 04:06:52,411 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=46, PETRI_TRANSITIONS=23} [2021-04-29 04:06:52,411 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2021-04-29 04:06:52,412 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:52,412 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 23 transitions, 192 flow [2021-04-29 04:06:52,412 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 23 transitions, 192 flow [2021-04-29 04:06:52,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 23 transitions, 192 flow [2021-04-29 04:06:52,421 INFO L129 PetriNetUnfolder]: 0/52 cut-off events. [2021-04-29 04:06:52,421 INFO L130 PetriNetUnfolder]: For 140/155 co-relation queries the response was YES. [2021-04-29 04:06:52,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 52 events. 0/52 cut-off events. For 140/155 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 220 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-04-29 04:06:52,422 INFO L146 LiptonReduction]: Number of co-enabled transitions 70 [2021-04-29 04:06:52,425 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:52,425 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:52,425 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-04-29 04:06:52,426 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 23 transitions, 192 flow [2021-04-29 04:06:52,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,427 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:52,427 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:52,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-29 04:06:52,427 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:52,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:52,428 INFO L82 PathProgramCache]: Analyzing trace with hash -2135761153, now seen corresponding path program 5 times [2021-04-29 04:06:52,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:52,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032413660] [2021-04-29 04:06:52,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:52,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:52,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:52,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:52,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:52,490 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-04-29 04:06:52,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-29 04:06:52,512 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-04-29 04:06:52,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 04:06:52,536 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:52,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:52,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032413660] [2021-04-29 04:06:52,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:52,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:52,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378819828] [2021-04-29 04:06:52,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:52,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:52,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:52,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:52,556 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:52,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 23 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:52,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:52,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:52,609 INFO L129 PetriNetUnfolder]: 9/90 cut-off events. [2021-04-29 04:06:52,609 INFO L130 PetriNetUnfolder]: For 366/372 co-relation queries the response was YES. [2021-04-29 04:06:52,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 90 events. 9/90 cut-off events. For 366/372 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 485 event pairs, 4 based on Foata normal form. 3/91 useless extension candidates. Maximal degree in co-relation 309. Up to 20 conditions per place. [2021-04-29 04:06:52,611 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 13 selfloop transitions, 8 changer transitions 3/32 dead transitions. [2021-04-29 04:06:52,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 32 transitions, 318 flow [2021-04-29 04:06:52,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:52,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:52,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-04-29 04:06:52,613 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-04-29 04:06:52,613 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-04-29 04:06:52,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-04-29 04:06:52,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:52,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-04-29 04:06:52,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,616 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,616 INFO L185 Difference]: Start difference. First operand has 45 places, 23 transitions, 192 flow. Second operand 6 states and 188 transitions. [2021-04-29 04:06:52,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 32 transitions, 318 flow [2021-04-29 04:06:52,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 32 transitions, 297 flow, removed 8 selfloop flow, removed 2 redundant places. [2021-04-29 04:06:52,621 INFO L241 Difference]: Finished difference. Result has 52 places, 25 transitions, 238 flow [2021-04-29 04:06:52,621 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=238, PETRI_PLACES=52, PETRI_TRANSITIONS=25} [2021-04-29 04:06:52,621 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2021-04-29 04:06:52,621 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:52,621 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 25 transitions, 238 flow [2021-04-29 04:06:52,622 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 25 transitions, 238 flow [2021-04-29 04:06:52,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 25 transitions, 238 flow [2021-04-29 04:06:52,630 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-04-29 04:06:52,630 INFO L130 PetriNetUnfolder]: For 271/302 co-relation queries the response was YES. [2021-04-29 04:06:52,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 60 events. 0/60 cut-off events. For 271/302 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 284 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-04-29 04:06:52,632 INFO L146 LiptonReduction]: Number of co-enabled transitions 72 [2021-04-29 04:06:52,634 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:52,634 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:52,634 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-04-29 04:06:52,635 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 25 transitions, 238 flow [2021-04-29 04:06:52,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,636 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:52,636 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:52,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-29 04:06:52,636 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:52,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:52,637 INFO L82 PathProgramCache]: Analyzing trace with hash -739544443, now seen corresponding path program 6 times [2021-04-29 04:06:52,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:52,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216212342] [2021-04-29 04:06:52,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:52,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:52,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:52,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:52,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:52,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:52,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 04:06:52,679 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-04-29 04:06:52,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 04:06:52,696 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:52,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:52,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216212342] [2021-04-29 04:06:52,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:52,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:52,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166161361] [2021-04-29 04:06:52,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:52,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:52,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:52,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:52,715 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:52,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 25 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:52,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:52,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:52,767 INFO L129 PetriNetUnfolder]: 9/85 cut-off events. [2021-04-29 04:06:52,768 INFO L130 PetriNetUnfolder]: For 462/482 co-relation queries the response was YES. [2021-04-29 04:06:52,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 85 events. 9/85 cut-off events. For 462/482 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 435 event pairs, 4 based on Foata normal form. 5/84 useless extension candidates. Maximal degree in co-relation 317. Up to 21 conditions per place. [2021-04-29 04:06:52,769 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 10 selfloop transitions, 9 changer transitions 3/30 dead transitions. [2021-04-29 04:06:52,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 30 transitions, 320 flow [2021-04-29 04:06:52,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:52,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-04-29 04:06:52,771 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-04-29 04:06:52,771 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-04-29 04:06:52,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-04-29 04:06:52,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:52,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-04-29 04:06:52,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,773 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,774 INFO L185 Difference]: Start difference. First operand has 51 places, 25 transitions, 238 flow. Second operand 6 states and 188 transitions. [2021-04-29 04:06:52,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 30 transitions, 320 flow [2021-04-29 04:06:52,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 30 transitions, 300 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-04-29 04:06:52,779 INFO L241 Difference]: Finished difference. Result has 55 places, 24 transitions, 240 flow [2021-04-29 04:06:52,779 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=55, PETRI_TRANSITIONS=24} [2021-04-29 04:06:52,780 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2021-04-29 04:06:52,780 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:52,780 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 24 transitions, 240 flow [2021-04-29 04:06:52,780 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 24 transitions, 240 flow [2021-04-29 04:06:52,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 24 transitions, 240 flow [2021-04-29 04:06:52,796 INFO L129 PetriNetUnfolder]: 0/52 cut-off events. [2021-04-29 04:06:52,796 INFO L130 PetriNetUnfolder]: For 229/260 co-relation queries the response was YES. [2021-04-29 04:06:52,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 52 events. 0/52 cut-off events. For 229/260 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 217 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-04-29 04:06:52,797 INFO L146 LiptonReduction]: Number of co-enabled transitions 64 [2021-04-29 04:06:52,800 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:52,800 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:52,800 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-04-29 04:06:52,801 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 24 transitions, 240 flow [2021-04-29 04:06:52,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,802 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:52,802 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:52,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-29 04:06:52,802 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:52,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:52,803 INFO L82 PathProgramCache]: Analyzing trace with hash -625874319, now seen corresponding path program 7 times [2021-04-29 04:06:52,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:52,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266872016] [2021-04-29 04:06:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:52,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:52,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:52,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:52,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:52,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:52,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 04:06:52,841 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:52,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:52,857 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:52,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:52,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266872016] [2021-04-29 04:06:52,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:52,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:52,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392910616] [2021-04-29 04:06:52,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:52,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:52,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:52,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:52,875 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:52,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 24 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:52,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:52,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:52,942 INFO L129 PetriNetUnfolder]: 5/99 cut-off events. [2021-04-29 04:06:52,942 INFO L130 PetriNetUnfolder]: For 510/523 co-relation queries the response was YES. [2021-04-29 04:06:52,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 99 events. 5/99 cut-off events. For 510/523 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 562 event pairs, 1 based on Foata normal form. 1/96 useless extension candidates. Maximal degree in co-relation 374. Up to 25 conditions per place. [2021-04-29 04:06:52,943 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 20 selfloop transitions, 8 changer transitions 3/39 dead transitions. [2021-04-29 04:06:52,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 39 transitions, 500 flow [2021-04-29 04:06:52,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:52,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:52,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-04-29 04:06:52,945 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-04-29 04:06:52,945 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-04-29 04:06:52,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-04-29 04:06:52,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:52,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-04-29 04:06:52,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,948 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,948 INFO L185 Difference]: Start difference. First operand has 53 places, 24 transitions, 240 flow. Second operand 6 states and 188 transitions. [2021-04-29 04:06:52,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 39 transitions, 500 flow [2021-04-29 04:06:52,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 39 transitions, 444 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-04-29 04:06:52,954 INFO L241 Difference]: Finished difference. Result has 57 places, 30 transitions, 336 flow [2021-04-29 04:06:52,954 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=57, PETRI_TRANSITIONS=30} [2021-04-29 04:06:52,955 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2021-04-29 04:06:52,955 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:52,955 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 30 transitions, 336 flow [2021-04-29 04:06:52,955 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 30 transitions, 336 flow [2021-04-29 04:06:52,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 30 transitions, 336 flow [2021-04-29 04:06:52,967 INFO L129 PetriNetUnfolder]: 0/84 cut-off events. [2021-04-29 04:06:52,968 INFO L130 PetriNetUnfolder]: For 417/431 co-relation queries the response was YES. [2021-04-29 04:06:52,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 84 events. 0/84 cut-off events. For 417/431 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 468 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-04-29 04:06:52,969 INFO L146 LiptonReduction]: Number of co-enabled transitions 60 [2021-04-29 04:06:52,972 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:52,972 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:52,973 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-04-29 04:06:52,973 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 30 transitions, 336 flow [2021-04-29 04:06:52,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:52,974 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:52,974 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:52,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-29 04:06:52,974 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:52,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:52,975 INFO L82 PathProgramCache]: Analyzing trace with hash -736478475, now seen corresponding path program 8 times [2021-04-29 04:06:52,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:52,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671059515] [2021-04-29 04:06:52,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:52,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:52,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:52,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:52,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:53,002 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-04-29 04:06:53,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-29 04:06:53,013 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:53,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:53,029 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:53,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:53,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671059515] [2021-04-29 04:06:53,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:53,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:53,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657823970] [2021-04-29 04:06:53,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:53,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:53,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:53,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:53,047 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:53,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 30 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:53,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:53,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:53,108 INFO L129 PetriNetUnfolder]: 4/98 cut-off events. [2021-04-29 04:06:53,108 INFO L130 PetriNetUnfolder]: For 491/509 co-relation queries the response was YES. [2021-04-29 04:06:53,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 98 events. 4/98 cut-off events. For 491/509 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 560 event pairs, 4 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 371. Up to 22 conditions per place. [2021-04-29 04:06:53,109 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 10 selfloop transitions, 14 changer transitions 2/34 dead transitions. [2021-04-29 04:06:53,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 34 transitions, 428 flow [2021-04-29 04:06:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:53,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:53,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-04-29 04:06:53,111 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-04-29 04:06:53,111 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-04-29 04:06:53,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-04-29 04:06:53,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:53,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-04-29 04:06:53,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,113 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,113 INFO L185 Difference]: Start difference. First operand has 56 places, 30 transitions, 336 flow. Second operand 6 states and 187 transitions. [2021-04-29 04:06:53,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 34 transitions, 428 flow [2021-04-29 04:06:53,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 34 transitions, 415 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-04-29 04:06:53,120 INFO L241 Difference]: Finished difference. Result has 61 places, 30 transitions, 368 flow [2021-04-29 04:06:53,120 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=368, PETRI_PLACES=61, PETRI_TRANSITIONS=30} [2021-04-29 04:06:53,120 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2021-04-29 04:06:53,120 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:53,120 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 30 transitions, 368 flow [2021-04-29 04:06:53,121 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 30 transitions, 368 flow [2021-04-29 04:06:53,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 30 transitions, 368 flow [2021-04-29 04:06:53,133 INFO L129 PetriNetUnfolder]: 0/86 cut-off events. [2021-04-29 04:06:53,133 INFO L130 PetriNetUnfolder]: For 531/542 co-relation queries the response was YES. [2021-04-29 04:06:53,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 86 events. 0/86 cut-off events. For 531/542 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 492 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2021-04-29 04:06:53,134 INFO L146 LiptonReduction]: Number of co-enabled transitions 58 [2021-04-29 04:06:53,137 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:53,137 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:53,138 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-04-29 04:06:53,138 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 30 transitions, 368 flow [2021-04-29 04:06:53,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,139 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:53,139 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:53,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-04-29 04:06:53,139 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:53,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:53,140 INFO L82 PathProgramCache]: Analyzing trace with hash 118828179, now seen corresponding path program 9 times [2021-04-29 04:06:53,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:53,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356029274] [2021-04-29 04:06:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:53,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:53,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:53,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:53,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:53,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:53,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 04:06:53,175 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:53,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:53,191 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:53,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:53,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356029274] [2021-04-29 04:06:53,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:53,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:53,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223829851] [2021-04-29 04:06:53,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:53,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:53,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:53,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:53,209 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:53,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 30 transitions, 368 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:53,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:53,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:53,268 INFO L129 PetriNetUnfolder]: 4/93 cut-off events. [2021-04-29 04:06:53,269 INFO L130 PetriNetUnfolder]: For 566/584 co-relation queries the response was YES. [2021-04-29 04:06:53,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 93 events. 4/93 cut-off events. For 566/584 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 506 event pairs, 4 based on Foata normal form. 4/95 useless extension candidates. Maximal degree in co-relation 374. Up to 20 conditions per place. [2021-04-29 04:06:53,270 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 13 selfloop transitions, 12 changer transitions 4/37 dead transitions. [2021-04-29 04:06:53,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 37 transitions, 511 flow [2021-04-29 04:06:53,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-04-29 04:06:53,271 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-04-29 04:06:53,272 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-04-29 04:06:53,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-04-29 04:06:53,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:53,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-04-29 04:06:53,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,274 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,274 INFO L185 Difference]: Start difference. First operand has 59 places, 30 transitions, 368 flow. Second operand 6 states and 188 transitions. [2021-04-29 04:06:53,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 37 transitions, 511 flow [2021-04-29 04:06:53,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 37 transitions, 471 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-04-29 04:06:53,280 INFO L241 Difference]: Finished difference. Result has 61 places, 29 transitions, 351 flow [2021-04-29 04:06:53,281 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=351, PETRI_PLACES=61, PETRI_TRANSITIONS=29} [2021-04-29 04:06:53,281 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2021-04-29 04:06:53,281 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:53,281 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 29 transitions, 351 flow [2021-04-29 04:06:53,282 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 29 transitions, 351 flow [2021-04-29 04:06:53,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 29 transitions, 351 flow [2021-04-29 04:06:53,291 INFO L129 PetriNetUnfolder]: 0/75 cut-off events. [2021-04-29 04:06:53,292 INFO L130 PetriNetUnfolder]: For 493/509 co-relation queries the response was YES. [2021-04-29 04:06:53,292 INFO L84 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 75 events. 0/75 cut-off events. For 493/509 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 397 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-04-29 04:06:53,293 INFO L146 LiptonReduction]: Number of co-enabled transitions 46 [2021-04-29 04:06:53,295 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:53,296 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:53,296 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-04-29 04:06:53,297 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 29 transitions, 351 flow [2021-04-29 04:06:53,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,297 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:53,297 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:53,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-04-29 04:06:53,298 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:53,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:53,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1414001737, now seen corresponding path program 10 times [2021-04-29 04:06:53,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:53,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719983812] [2021-04-29 04:06:53,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:53,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:53,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:53,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:53,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:53,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:53,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 04:06:53,333 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:53,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:53,350 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:53,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:53,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719983812] [2021-04-29 04:06:53,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:53,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:53,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848253548] [2021-04-29 04:06:53,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:53,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:53,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:53,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:53,368 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:53,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 29 transitions, 351 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:53,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:53,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:53,427 INFO L129 PetriNetUnfolder]: 4/82 cut-off events. [2021-04-29 04:06:53,428 INFO L130 PetriNetUnfolder]: For 495/514 co-relation queries the response was YES. [2021-04-29 04:06:53,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 82 events. 4/82 cut-off events. For 495/514 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 414 event pairs, 4 based on Foata normal form. 5/85 useless extension candidates. Maximal degree in co-relation 333. Up to 18 conditions per place. [2021-04-29 04:06:53,429 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 12 selfloop transitions, 10 changer transitions 3/33 dead transitions. [2021-04-29 04:06:53,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 33 transitions, 442 flow [2021-04-29 04:06:53,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:53,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:53,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-04-29 04:06:53,431 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-04-29 04:06:53,432 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-04-29 04:06:53,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-04-29 04:06:53,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:53,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-04-29 04:06:53,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,434 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,434 INFO L185 Difference]: Start difference. First operand has 59 places, 29 transitions, 351 flow. Second operand 6 states and 188 transitions. [2021-04-29 04:06:53,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 33 transitions, 442 flow [2021-04-29 04:06:53,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 33 transitions, 374 flow, removed 9 selfloop flow, removed 8 redundant places. [2021-04-29 04:06:53,441 INFO L241 Difference]: Finished difference. Result has 58 places, 28 transitions, 310 flow [2021-04-29 04:06:53,442 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=58, PETRI_TRANSITIONS=28} [2021-04-29 04:06:53,442 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2021-04-29 04:06:53,442 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:53,442 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 28 transitions, 310 flow [2021-04-29 04:06:53,443 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 28 transitions, 310 flow [2021-04-29 04:06:53,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 28 transitions, 310 flow [2021-04-29 04:06:53,452 INFO L129 PetriNetUnfolder]: 0/66 cut-off events. [2021-04-29 04:06:53,452 INFO L130 PetriNetUnfolder]: For 295/305 co-relation queries the response was YES. [2021-04-29 04:06:53,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 66 events. 0/66 cut-off events. For 295/305 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 312 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-04-29 04:06:53,454 INFO L146 LiptonReduction]: Number of co-enabled transitions 42 [2021-04-29 04:06:53,456 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:53,457 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:53,457 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-04-29 04:06:53,458 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 28 transitions, 310 flow [2021-04-29 04:06:53,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,458 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:53,459 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:53,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-04-29 04:06:53,459 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:53,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:53,459 INFO L82 PathProgramCache]: Analyzing trace with hash -897088213, now seen corresponding path program 11 times [2021-04-29 04:06:53,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:53,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422658817] [2021-04-29 04:06:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:53,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:53,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:53,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:53,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:53,487 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:53,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:53,504 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-04-29 04:06:53,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 04:06:53,520 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:53,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:53,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422658817] [2021-04-29 04:06:53,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:53,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:53,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7409884] [2021-04-29 04:06:53,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:53,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:53,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:53,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:53,538 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:53,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 28 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:53,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:53,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:53,592 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-04-29 04:06:53,592 INFO L130 PetriNetUnfolder]: For 385/388 co-relation queries the response was YES. [2021-04-29 04:06:53,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 93 events. 2/93 cut-off events. For 385/388 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 537 event pairs, 1 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 353. Up to 21 conditions per place. [2021-04-29 04:06:53,593 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 17 selfloop transitions, 11 changer transitions 2/38 dead transitions. [2021-04-29 04:06:53,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 38 transitions, 487 flow [2021-04-29 04:06:53,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-04-29 04:06:53,595 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-04-29 04:06:53,595 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-04-29 04:06:53,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-04-29 04:06:53,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:53,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-04-29 04:06:53,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,598 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,598 INFO L185 Difference]: Start difference. First operand has 57 places, 28 transitions, 310 flow. Second operand 6 states and 188 transitions. [2021-04-29 04:06:53,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 38 transitions, 487 flow [2021-04-29 04:06:53,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 38 transitions, 456 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-04-29 04:06:53,604 INFO L241 Difference]: Finished difference. Result has 63 places, 31 transitions, 387 flow [2021-04-29 04:06:53,604 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=63, PETRI_TRANSITIONS=31} [2021-04-29 04:06:53,604 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2021-04-29 04:06:53,604 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:53,605 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 31 transitions, 387 flow [2021-04-29 04:06:53,605 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 31 transitions, 387 flow [2021-04-29 04:06:53,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 31 transitions, 387 flow [2021-04-29 04:06:53,618 INFO L129 PetriNetUnfolder]: 0/83 cut-off events. [2021-04-29 04:06:53,618 INFO L130 PetriNetUnfolder]: For 419/425 co-relation queries the response was YES. [2021-04-29 04:06:53,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 83 events. 0/83 cut-off events. For 419/425 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 463 event pairs, 0 based on Foata normal form. 1/82 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-04-29 04:06:53,620 INFO L146 LiptonReduction]: Number of co-enabled transitions 42 [2021-04-29 04:06:53,623 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:53,623 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:53,623 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 19 [2021-04-29 04:06:53,624 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 31 transitions, 387 flow [2021-04-29 04:06:53,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,624 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:53,625 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:53,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-04-29 04:06:53,625 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:53,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:53,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1221507569, now seen corresponding path program 12 times [2021-04-29 04:06:53,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:53,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214128905] [2021-04-29 04:06:53,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:53,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:53,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:53,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:53,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:53,651 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:53,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:53,671 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-04-29 04:06:53,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 04:06:53,688 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:53,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:53,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:53,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214128905] [2021-04-29 04:06:53,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:53,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:53,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466462648] [2021-04-29 04:06:53,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:53,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:53,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:53,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:53,708 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:53,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 31 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:53,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:53,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:53,762 INFO L129 PetriNetUnfolder]: 2/86 cut-off events. [2021-04-29 04:06:53,762 INFO L130 PetriNetUnfolder]: For 423/426 co-relation queries the response was YES. [2021-04-29 04:06:53,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 86 events. 2/86 cut-off events. For 423/426 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 466 event pairs, 0 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 349. Up to 20 conditions per place. [2021-04-29 04:06:53,763 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 19 selfloop transitions, 10 changer transitions 2/39 dead transitions. [2021-04-29 04:06:53,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 39 transitions, 523 flow [2021-04-29 04:06:53,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:53,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-04-29 04:06:53,765 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-04-29 04:06:53,765 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-04-29 04:06:53,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-04-29 04:06:53,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:53,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-04-29 04:06:53,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,768 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,768 INFO L185 Difference]: Start difference. First operand has 62 places, 31 transitions, 387 flow. Second operand 6 states and 188 transitions. [2021-04-29 04:06:53,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 39 transitions, 523 flow [2021-04-29 04:06:53,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 39 transitions, 502 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-04-29 04:06:53,774 INFO L241 Difference]: Finished difference. Result has 67 places, 33 transitions, 432 flow [2021-04-29 04:06:53,774 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=432, PETRI_PLACES=67, PETRI_TRANSITIONS=33} [2021-04-29 04:06:53,774 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2021-04-29 04:06:53,774 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:53,775 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 33 transitions, 432 flow [2021-04-29 04:06:53,775 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 33 transitions, 432 flow [2021-04-29 04:06:53,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 33 transitions, 432 flow [2021-04-29 04:06:53,788 INFO L129 PetriNetUnfolder]: 0/76 cut-off events. [2021-04-29 04:06:53,788 INFO L130 PetriNetUnfolder]: For 414/420 co-relation queries the response was YES. [2021-04-29 04:06:53,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 76 events. 0/76 cut-off events. For 414/420 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 401 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-04-29 04:06:53,790 INFO L146 LiptonReduction]: Number of co-enabled transitions 48 [2021-04-29 04:06:53,793 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:53,794 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:53,794 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-04-29 04:06:53,795 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 33 transitions, 432 flow [2021-04-29 04:06:53,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,795 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:53,795 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:53,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-04-29 04:06:53,795 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:53,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:53,796 INFO L82 PathProgramCache]: Analyzing trace with hash 2147374769, now seen corresponding path program 13 times [2021-04-29 04:06:53,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:53,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902201693] [2021-04-29 04:06:53,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:53,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:53,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:53,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:53,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:53,821 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-04-29 04:06:53,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-29 04:06:53,833 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:53,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:53,850 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:53,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:53,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902201693] [2021-04-29 04:06:53,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:53,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:53,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944149284] [2021-04-29 04:06:53,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:53,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:53,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:53,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:53,869 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:53,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 33 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:53,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:53,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:53,931 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-04-29 04:06:53,932 INFO L130 PetriNetUnfolder]: For 453/453 co-relation queries the response was YES. [2021-04-29 04:06:53,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 79 events. 2/79 cut-off events. For 453/453 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 401 event pairs, 0 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 348. Up to 15 conditions per place. [2021-04-29 04:06:53,933 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 15 selfloop transitions, 11 changer transitions 3/37 dead transitions. [2021-04-29 04:06:53,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 37 transitions, 521 flow [2021-04-29 04:06:53,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:53,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:53,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-04-29 04:06:53,934 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-04-29 04:06:53,935 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-04-29 04:06:53,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-04-29 04:06:53,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:53,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-04-29 04:06:53,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,937 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,937 INFO L185 Difference]: Start difference. First operand has 66 places, 33 transitions, 432 flow. Second operand 6 states and 188 transitions. [2021-04-29 04:06:53,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 37 transitions, 521 flow [2021-04-29 04:06:53,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 37 transitions, 510 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-04-29 04:06:53,943 INFO L241 Difference]: Finished difference. Result has 71 places, 31 transitions, 418 flow [2021-04-29 04:06:53,943 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=418, PETRI_PLACES=71, PETRI_TRANSITIONS=31} [2021-04-29 04:06:53,943 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2021-04-29 04:06:53,944 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:53,944 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 31 transitions, 418 flow [2021-04-29 04:06:53,944 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 31 transitions, 418 flow [2021-04-29 04:06:53,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 31 transitions, 418 flow [2021-04-29 04:06:53,955 INFO L129 PetriNetUnfolder]: 0/68 cut-off events. [2021-04-29 04:06:53,956 INFO L130 PetriNetUnfolder]: For 430/436 co-relation queries the response was YES. [2021-04-29 04:06:53,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 68 events. 0/68 cut-off events. For 430/436 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 327 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-04-29 04:06:53,957 INFO L146 LiptonReduction]: Number of co-enabled transitions 38 [2021-04-29 04:06:53,960 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:53,960 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:53,960 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-04-29 04:06:53,961 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 31 transitions, 418 flow [2021-04-29 04:06:53,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:53,961 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:53,962 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:53,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-04-29 04:06:53,962 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:53,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:53,973 INFO L82 PathProgramCache]: Analyzing trace with hash 359261539, now seen corresponding path program 14 times [2021-04-29 04:06:53,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:53,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95214449] [2021-04-29 04:06:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:53,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:53,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:53,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:53,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:54,001 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:54,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:54,018 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-04-29 04:06:54,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 04:06:54,034 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:54,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:54,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95214449] [2021-04-29 04:06:54,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:54,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:54,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976988740] [2021-04-29 04:06:54,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:54,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:54,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:54,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:54,051 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:54,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 31 transitions, 418 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:54,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:54,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:54,093 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-04-29 04:06:54,093 INFO L130 PetriNetUnfolder]: For 466/466 co-relation queries the response was YES. [2021-04-29 04:06:54,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 71 events. 2/71 cut-off events. For 466/466 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 337 event pairs, 0 based on Foata normal form. 1/72 useless extension candidates. Maximal degree in co-relation 326. Up to 18 conditions per place. [2021-04-29 04:06:54,094 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 15 selfloop transitions, 8 changer transitions 3/34 dead transitions. [2021-04-29 04:06:54,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 34 transitions, 488 flow [2021-04-29 04:06:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:54,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:54,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-04-29 04:06:54,095 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-04-29 04:06:54,096 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:54,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,098 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,098 INFO L185 Difference]: Start difference. First operand has 69 places, 31 transitions, 418 flow. Second operand 6 states and 187 transitions. [2021-04-29 04:06:54,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 34 transitions, 488 flow [2021-04-29 04:06:54,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 34 transitions, 461 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-04-29 04:06:54,103 INFO L241 Difference]: Finished difference. Result has 71 places, 28 transitions, 361 flow [2021-04-29 04:06:54,103 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=361, PETRI_PLACES=71, PETRI_TRANSITIONS=28} [2021-04-29 04:06:54,103 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2021-04-29 04:06:54,103 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:54,104 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 28 transitions, 361 flow [2021-04-29 04:06:54,104 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 28 transitions, 361 flow [2021-04-29 04:06:54,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 28 transitions, 361 flow [2021-04-29 04:06:54,113 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-04-29 04:06:54,113 INFO L130 PetriNetUnfolder]: For 337/344 co-relation queries the response was YES. [2021-04-29 04:06:54,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 60 events. 0/60 cut-off events. For 337/344 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 256 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-04-29 04:06:54,114 INFO L146 LiptonReduction]: Number of co-enabled transitions 28 [2021-04-29 04:06:54,117 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:54,117 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:54,117 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-04-29 04:06:54,118 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 28 transitions, 361 flow [2021-04-29 04:06:54,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,118 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:54,118 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:54,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-04-29 04:06:54,118 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:54,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:54,119 INFO L82 PathProgramCache]: Analyzing trace with hash -618143921, now seen corresponding path program 15 times [2021-04-29 04:06:54,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:54,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463702094] [2021-04-29 04:06:54,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:54,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:54,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:54,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 04:06:54,149 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-04-29 04:06:54,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 04:06:54,165 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:54,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:54,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463702094] [2021-04-29 04:06:54,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:54,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:54,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968656185] [2021-04-29 04:06:54,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:54,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:54,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:54,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:54,182 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:54,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 28 transitions, 361 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:54,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:54,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:54,231 INFO L129 PetriNetUnfolder]: 0/83 cut-off events. [2021-04-29 04:06:54,232 INFO L130 PetriNetUnfolder]: For 517/517 co-relation queries the response was YES. [2021-04-29 04:06:54,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 83 events. 0/83 cut-off events. For 517/517 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 443 event pairs, 0 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2021-04-29 04:06:54,232 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 19 selfloop transitions, 8 changer transitions 2/37 dead transitions. [2021-04-29 04:06:54,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 37 transitions, 562 flow [2021-04-29 04:06:54,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:54,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:54,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-04-29 04:06:54,234 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-04-29 04:06:54,234 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-04-29 04:06:54,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-04-29 04:06:54,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:54,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-04-29 04:06:54,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,236 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,237 INFO L185 Difference]: Start difference. First operand has 68 places, 28 transitions, 361 flow. Second operand 6 states and 188 transitions. [2021-04-29 04:06:54,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 37 transitions, 562 flow [2021-04-29 04:06:54,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 37 transitions, 506 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-04-29 04:06:54,242 INFO L241 Difference]: Finished difference. Result has 70 places, 31 transitions, 408 flow [2021-04-29 04:06:54,242 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=70, PETRI_TRANSITIONS=31} [2021-04-29 04:06:54,242 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2021-04-29 04:06:54,242 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:54,243 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 31 transitions, 408 flow [2021-04-29 04:06:54,243 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 31 transitions, 408 flow [2021-04-29 04:06:54,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 31 transitions, 408 flow [2021-04-29 04:06:54,253 INFO L129 PetriNetUnfolder]: 0/77 cut-off events. [2021-04-29 04:06:54,253 INFO L130 PetriNetUnfolder]: For 393/394 co-relation queries the response was YES. [2021-04-29 04:06:54,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 77 events. 0/77 cut-off events. For 393/394 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 391 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-04-29 04:06:54,254 INFO L146 LiptonReduction]: Number of co-enabled transitions 28 [2021-04-29 04:06:54,257 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:54,257 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:54,258 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-04-29 04:06:54,258 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 31 transitions, 408 flow [2021-04-29 04:06:54,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,259 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:54,259 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:54,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-04-29 04:06:54,259 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:54,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:54,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1213777171, now seen corresponding path program 16 times [2021-04-29 04:06:54,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:54,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884151745] [2021-04-29 04:06:54,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:54,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:54,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:54,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 04:06:54,289 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:54,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:54,303 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:54,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:54,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884151745] [2021-04-29 04:06:54,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:54,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:54,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228684089] [2021-04-29 04:06:54,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:54,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:54,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:54,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:54,319 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:54,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 31 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:54,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:54,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:54,368 INFO L129 PetriNetUnfolder]: 0/76 cut-off events. [2021-04-29 04:06:54,369 INFO L130 PetriNetUnfolder]: For 424/426 co-relation queries the response was YES. [2021-04-29 04:06:54,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 76 events. 0/76 cut-off events. For 424/426 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 378 event pairs, 0 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 0. Up to 18 conditions per place. [2021-04-29 04:06:54,369 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 15 selfloop transitions, 10 changer transitions 2/35 dead transitions. [2021-04-29 04:06:54,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 35 transitions, 515 flow [2021-04-29 04:06:54,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:54,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:54,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-04-29 04:06:54,371 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-04-29 04:06:54,371 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:54,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,373 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,373 INFO L185 Difference]: Start difference. First operand has 69 places, 31 transitions, 408 flow. Second operand 6 states and 187 transitions. [2021-04-29 04:06:54,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 35 transitions, 515 flow [2021-04-29 04:06:54,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 35 transitions, 505 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-04-29 04:06:54,378 INFO L241 Difference]: Finished difference. Result has 74 places, 32 transitions, 448 flow [2021-04-29 04:06:54,378 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=448, PETRI_PLACES=74, PETRI_TRANSITIONS=32} [2021-04-29 04:06:54,378 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2021-04-29 04:06:54,378 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:54,379 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 32 transitions, 448 flow [2021-04-29 04:06:54,379 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 32 transitions, 448 flow [2021-04-29 04:06:54,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 32 transitions, 448 flow [2021-04-29 04:06:54,389 INFO L129 PetriNetUnfolder]: 0/70 cut-off events. [2021-04-29 04:06:54,389 INFO L130 PetriNetUnfolder]: For 469/474 co-relation queries the response was YES. [2021-04-29 04:06:54,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 70 events. 0/70 cut-off events. For 469/474 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 325 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-04-29 04:06:54,390 INFO L146 LiptonReduction]: Number of co-enabled transitions 24 [2021-04-29 04:06:54,394 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:54,394 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:54,394 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-04-29 04:06:54,395 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 32 transitions, 448 flow [2021-04-29 04:06:54,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,395 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:54,395 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:54,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-04-29 04:06:54,395 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:54,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:54,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1864287049, now seen corresponding path program 17 times [2021-04-29 04:06:54,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:54,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185664445] [2021-04-29 04:06:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:54,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:54,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:54,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 04:06:54,426 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-04-29 04:06:54,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 04:06:54,441 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:54,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:54,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185664445] [2021-04-29 04:06:54,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:54,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:54,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429458552] [2021-04-29 04:06:54,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:54,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:54,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:54,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:54,457 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:54,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 32 transitions, 448 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:54,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:54,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:54,499 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2021-04-29 04:06:54,499 INFO L130 PetriNetUnfolder]: For 503/509 co-relation queries the response was YES. [2021-04-29 04:06:54,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 69 events. 0/69 cut-off events. For 503/509 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 314 event pairs, 0 based on Foata normal form. 3/72 useless extension candidates. Maximal degree in co-relation 0. Up to 18 conditions per place. [2021-04-29 04:06:54,500 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 15 selfloop transitions, 7 changer transitions 3/33 dead transitions. [2021-04-29 04:06:54,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 33 transitions, 502 flow [2021-04-29 04:06:54,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:54,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:54,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-04-29 04:06:54,501 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-04-29 04:06:54,502 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:54,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,504 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,504 INFO L185 Difference]: Start difference. First operand has 73 places, 32 transitions, 448 flow. Second operand 6 states and 187 transitions. [2021-04-29 04:06:54,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 33 transitions, 502 flow [2021-04-29 04:06:54,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 33 transitions, 491 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-04-29 04:06:54,509 INFO L241 Difference]: Finished difference. Result has 77 places, 29 transitions, 397 flow [2021-04-29 04:06:54,509 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=397, PETRI_PLACES=77, PETRI_TRANSITIONS=29} [2021-04-29 04:06:54,509 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2021-04-29 04:06:54,509 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:54,510 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 29 transitions, 397 flow [2021-04-29 04:06:54,510 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 29 transitions, 397 flow [2021-04-29 04:06:54,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 29 transitions, 397 flow [2021-04-29 04:06:54,518 INFO L129 PetriNetUnfolder]: 0/61 cut-off events. [2021-04-29 04:06:54,519 INFO L130 PetriNetUnfolder]: For 370/370 co-relation queries the response was YES. [2021-04-29 04:06:54,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 61 events. 0/61 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 261 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-04-29 04:06:54,520 INFO L146 LiptonReduction]: Number of co-enabled transitions 20 [2021-04-29 04:06:54,522 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:54,522 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:54,523 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-04-29 04:06:54,523 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 29 transitions, 397 flow [2021-04-29 04:06:54,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,524 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:54,524 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:54,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-04-29 04:06:54,524 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:54,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:54,524 INFO L82 PathProgramCache]: Analyzing trace with hash 476805071, now seen corresponding path program 18 times [2021-04-29 04:06:54,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:54,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399757474] [2021-04-29 04:06:54,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:54,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:54,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:54,545 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:54,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:54,559 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-04-29 04:06:54,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 04:06:54,574 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:54,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:54,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399757474] [2021-04-29 04:06:54,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:54,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:54,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140290650] [2021-04-29 04:06:54,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:54,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:54,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:54,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:54,590 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:54,590 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 29 transitions, 397 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:54,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:54,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:54,628 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-04-29 04:06:54,629 INFO L130 PetriNetUnfolder]: For 393/393 co-relation queries the response was YES. [2021-04-29 04:06:54,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 60 events. 0/60 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 251 event pairs, 0 based on Foata normal form. 1/61 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2021-04-29 04:06:54,629 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 12 selfloop transitions, 8 changer transitions 3/31 dead transitions. [2021-04-29 04:06:54,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 31 transitions, 458 flow [2021-04-29 04:06:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:54,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-04-29 04:06:54,631 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-04-29 04:06:54,631 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:54,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,633 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,633 INFO L185 Difference]: Start difference. First operand has 74 places, 29 transitions, 397 flow. Second operand 6 states and 187 transitions. [2021-04-29 04:06:54,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 31 transitions, 458 flow [2021-04-29 04:06:54,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 31 transitions, 424 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-04-29 04:06:54,638 INFO L241 Difference]: Finished difference. Result has 75 places, 26 transitions, 332 flow [2021-04-29 04:06:54,638 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=332, PETRI_PLACES=75, PETRI_TRANSITIONS=26} [2021-04-29 04:06:54,638 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2021-04-29 04:06:54,638 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:54,638 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 26 transitions, 332 flow [2021-04-29 04:06:54,639 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 26 transitions, 332 flow [2021-04-29 04:06:54,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 26 transitions, 332 flow [2021-04-29 04:06:54,646 INFO L129 PetriNetUnfolder]: 0/53 cut-off events. [2021-04-29 04:06:54,646 INFO L130 PetriNetUnfolder]: For 279/279 co-relation queries the response was YES. [2021-04-29 04:06:54,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 53 events. 0/53 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 213 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-04-29 04:06:54,647 INFO L146 LiptonReduction]: Number of co-enabled transitions 18 [2021-04-29 04:06:54,650 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:54,650 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:54,650 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-04-29 04:06:54,650 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 26 transitions, 332 flow [2021-04-29 04:06:54,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,651 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:54,651 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:54,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-04-29 04:06:54,651 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:54,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:54,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1059426571, now seen corresponding path program 19 times [2021-04-29 04:06:54,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:54,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48870843] [2021-04-29 04:06:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:54,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:54,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:54,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 04:06:54,678 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:54,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:54,691 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:54,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:54,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48870843] [2021-04-29 04:06:54,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:54,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:54,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738181218] [2021-04-29 04:06:54,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:54,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:54,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:54,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:54,707 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:54,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 26 transitions, 332 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:54,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:54,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:54,758 INFO L129 PetriNetUnfolder]: 0/52 cut-off events. [2021-04-29 04:06:54,758 INFO L130 PetriNetUnfolder]: For 296/296 co-relation queries the response was YES. [2021-04-29 04:06:54,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 52 events. 0/52 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 195 event pairs, 0 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-04-29 04:06:54,759 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 10 selfloop transitions, 7 changer transitions 3/28 dead transitions. [2021-04-29 04:06:54,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 28 transitions, 387 flow [2021-04-29 04:06:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:54,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-04-29 04:06:54,761 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-04-29 04:06:54,761 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:54,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,763 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,763 INFO L185 Difference]: Start difference. First operand has 70 places, 26 transitions, 332 flow. Second operand 6 states and 187 transitions. [2021-04-29 04:06:54,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 28 transitions, 387 flow [2021-04-29 04:06:54,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 28 transitions, 340 flow, removed 5 selfloop flow, removed 8 redundant places. [2021-04-29 04:06:54,766 INFO L241 Difference]: Finished difference. Result has 68 places, 23 transitions, 263 flow [2021-04-29 04:06:54,767 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=68, PETRI_TRANSITIONS=23} [2021-04-29 04:06:54,767 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2021-04-29 04:06:54,767 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:54,767 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 23 transitions, 263 flow [2021-04-29 04:06:54,767 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 23 transitions, 263 flow [2021-04-29 04:06:54,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 23 transitions, 263 flow [2021-04-29 04:06:54,773 INFO L129 PetriNetUnfolder]: 0/45 cut-off events. [2021-04-29 04:06:54,773 INFO L130 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2021-04-29 04:06:54,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 45 events. 0/45 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 148 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-04-29 04:06:54,774 INFO L146 LiptonReduction]: Number of co-enabled transitions 12 [2021-04-29 04:06:54,776 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:54,776 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:54,776 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-04-29 04:06:54,776 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 23 transitions, 263 flow [2021-04-29 04:06:54,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,777 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:54,777 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:54,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-04-29 04:06:54,777 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:54,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:54,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1346663061, now seen corresponding path program 20 times [2021-04-29 04:06:54,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:54,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634854085] [2021-04-29 04:06:54,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:54,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:54,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:54,796 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-04-29 04:06:54,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-29 04:06:54,806 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-04-29 04:06:54,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 04:06:54,823 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:54,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:54,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634854085] [2021-04-29 04:06:54,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:54,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:54,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53590881] [2021-04-29 04:06:54,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:54,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:54,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:54,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:54,838 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:54,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 23 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:54,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:54,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:54,873 INFO L129 PetriNetUnfolder]: 0/44 cut-off events. [2021-04-29 04:06:54,874 INFO L130 PetriNetUnfolder]: For 207/207 co-relation queries the response was YES. [2021-04-29 04:06:54,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 44 events. 0/44 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 141 event pairs, 0 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-04-29 04:06:54,874 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 10 selfloop transitions, 6 changer transitions 2/26 dead transitions. [2021-04-29 04:06:54,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 26 transitions, 323 flow [2021-04-29 04:06:54,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:54,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:54,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-04-29 04:06:54,876 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-04-29 04:06:54,876 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:54,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-04-29 04:06:54,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,877 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,878 INFO L185 Difference]: Start difference. First operand has 63 places, 23 transitions, 263 flow. Second operand 6 states and 187 transitions. [2021-04-29 04:06:54,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 26 transitions, 323 flow [2021-04-29 04:06:54,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 26 transitions, 277 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-04-29 04:06:54,880 INFO L241 Difference]: Finished difference. Result has 63 places, 23 transitions, 233 flow [2021-04-29 04:06:54,880 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=63, PETRI_TRANSITIONS=23} [2021-04-29 04:06:54,881 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2021-04-29 04:06:54,881 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:54,881 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 23 transitions, 233 flow [2021-04-29 04:06:54,881 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 23 transitions, 233 flow [2021-04-29 04:06:54,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 23 transitions, 233 flow [2021-04-29 04:06:54,886 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-04-29 04:06:54,886 INFO L130 PetriNetUnfolder]: For 135/137 co-relation queries the response was YES. [2021-04-29 04:06:54,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 38 events. 0/38 cut-off events. For 135/137 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-04-29 04:06:54,887 INFO L146 LiptonReduction]: Number of co-enabled transitions 12 [2021-04-29 04:06:54,888 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:54,888 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:54,889 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-04-29 04:06:54,889 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 23 transitions, 233 flow [2021-04-29 04:06:54,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,889 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:54,889 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:54,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-04-29 04:06:54,890 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:54,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:54,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1632985331, now seen corresponding path program 21 times [2021-04-29 04:06:54,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:54,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509362173] [2021-04-29 04:06:54,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:54,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:54,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:54,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:54,908 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-04-29 04:06:54,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-29 04:06:54,917 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:54,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:54,931 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:54,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:54,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509362173] [2021-04-29 04:06:54,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:54,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:54,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428816187] [2021-04-29 04:06:54,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:54,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:54,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:54,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:54,948 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:54,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 23 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:54,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:54,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:54,986 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2021-04-29 04:06:54,986 INFO L130 PetriNetUnfolder]: For 151/155 co-relation queries the response was YES. [2021-04-29 04:06:54,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 37 events. 0/37 cut-off events. For 151/155 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 97 event pairs, 0 based on Foata normal form. 3/40 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-04-29 04:06:54,987 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 8 selfloop transitions, 3 changer transitions 4/23 dead transitions. [2021-04-29 04:06:54,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 23 transitions, 263 flow [2021-04-29 04:06:54,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:54,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:54,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2021-04-29 04:06:54,988 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7905982905982906 [2021-04-29 04:06:54,988 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 185 transitions. [2021-04-29 04:06:54,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 185 transitions. [2021-04-29 04:06:54,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:54,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 185 transitions. [2021-04-29 04:06:54,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,990 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:54,990 INFO L185 Difference]: Start difference. First operand has 62 places, 23 transitions, 233 flow. Second operand 6 states and 185 transitions. [2021-04-29 04:06:54,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 23 transitions, 263 flow [2021-04-29 04:06:54,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 23 transitions, 257 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-04-29 04:06:54,993 INFO L241 Difference]: Finished difference. Result has 66 places, 19 transitions, 179 flow [2021-04-29 04:06:54,993 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=66, PETRI_TRANSITIONS=19} [2021-04-29 04:06:55,002 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2021-04-29 04:06:55,002 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:55,002 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 19 transitions, 179 flow [2021-04-29 04:06:55,003 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 19 transitions, 179 flow [2021-04-29 04:06:55,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 19 transitions, 179 flow [2021-04-29 04:06:55,007 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-04-29 04:06:55,007 INFO L130 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2021-04-29 04:06:55,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 29 events. 0/29 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 04:06:55,007 INFO L146 LiptonReduction]: Number of co-enabled transitions 8 [2021-04-29 04:06:55,009 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:55,009 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:55,009 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-04-29 04:06:55,010 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 19 transitions, 179 flow [2021-04-29 04:06:55,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,010 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:55,010 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:55,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-04-29 04:06:55,010 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:55,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:55,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1958479669, now seen corresponding path program 22 times [2021-04-29 04:06:55,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:55,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850550319] [2021-04-29 04:06:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:55,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:55,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:55,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:55,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:55,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:55,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 04:06:55,039 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:55,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:55,054 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:55,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:55,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850550319] [2021-04-29 04:06:55,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:55,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:55,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281932975] [2021-04-29 04:06:55,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:55,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:55,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:55,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:55,069 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:55,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 19 transitions, 179 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:55,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:55,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:55,106 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-04-29 04:06:55,106 INFO L130 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2021-04-29 04:06:55,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 28 events. 0/28 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 04:06:55,107 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 5 selfloop transitions, 4 changer transitions 3/20 dead transitions. [2021-04-29 04:06:55,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 20 transitions, 207 flow [2021-04-29 04:06:55,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:55,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2021-04-29 04:06:55,108 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.782051282051282 [2021-04-29 04:06:55,108 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 183 transitions. [2021-04-29 04:06:55,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 183 transitions. [2021-04-29 04:06:55,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:55,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 183 transitions. [2021-04-29 04:06:55,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.5) internal successors, (183), 6 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,110 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,110 INFO L185 Difference]: Start difference. First operand has 60 places, 19 transitions, 179 flow. Second operand 6 states and 183 transitions. [2021-04-29 04:06:55,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 20 transitions, 207 flow [2021-04-29 04:06:55,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 20 transitions, 173 flow, removed 4 selfloop flow, removed 9 redundant places. [2021-04-29 04:06:55,112 INFO L241 Difference]: Finished difference. Result has 57 places, 16 transitions, 116 flow [2021-04-29 04:06:55,112 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=57, PETRI_TRANSITIONS=16} [2021-04-29 04:06:55,112 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2021-04-29 04:06:55,112 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:55,112 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 16 transitions, 116 flow [2021-04-29 04:06:55,113 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 16 transitions, 116 flow [2021-04-29 04:06:55,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 16 transitions, 116 flow [2021-04-29 04:06:55,116 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-04-29 04:06:55,116 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-04-29 04:06:55,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 21 events. 0/21 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 04:06:55,116 INFO L146 LiptonReduction]: Number of co-enabled transitions 4 [2021-04-29 04:06:55,117 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:55,117 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:55,118 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-04-29 04:06:55,118 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 16 transitions, 116 flow [2021-04-29 04:06:55,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,118 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:55,118 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:55,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-04-29 04:06:55,119 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:55,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:55,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1473450575, now seen corresponding path program 23 times [2021-04-29 04:06:55,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:55,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34665023] [2021-04-29 04:06:55,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:55,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:55,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:55,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:55,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:55,137 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-04-29 04:06:55,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-29 04:06:55,147 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-04-29 04:06:55,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 04:06:55,161 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:55,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:55,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:55,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34665023] [2021-04-29 04:06:55,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:55,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:55,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385102255] [2021-04-29 04:06:55,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:55,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:55,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:55,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:55,177 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:55,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 16 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:55,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:55,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:55,201 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-04-29 04:06:55,201 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-04-29 04:06:55,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 20 events. 0/20 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 04:06:55,201 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 2 selfloop transitions, 3 changer transitions 3/16 dead transitions. [2021-04-29 04:06:55,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 16 transitions, 132 flow [2021-04-29 04:06:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:55,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2021-04-29 04:06:55,203 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7735042735042735 [2021-04-29 04:06:55,203 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 181 transitions. [2021-04-29 04:06:55,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 181 transitions. [2021-04-29 04:06:55,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:55,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 181 transitions. [2021-04-29 04:06:55,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,204 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,204 INFO L185 Difference]: Start difference. First operand has 52 places, 16 transitions, 116 flow. Second operand 6 states and 181 transitions. [2021-04-29 04:06:55,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 16 transitions, 132 flow [2021-04-29 04:06:55,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 16 transitions, 98 flow, removed 4 selfloop flow, removed 11 redundant places. [2021-04-29 04:06:55,206 INFO L241 Difference]: Finished difference. Result has 47 places, 13 transitions, 61 flow [2021-04-29 04:06:55,206 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=61, PETRI_PLACES=47, PETRI_TRANSITIONS=13} [2021-04-29 04:06:55,206 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2021-04-29 04:06:55,206 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:55,206 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 13 transitions, 61 flow [2021-04-29 04:06:55,206 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 13 transitions, 61 flow [2021-04-29 04:06:55,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 13 transitions, 61 flow [2021-04-29 04:06:55,208 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-04-29 04:06:55,208 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-29 04:06:55,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 13 events. 0/13 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 04:06:55,209 INFO L146 LiptonReduction]: Number of co-enabled transitions 4 [2021-04-29 04:06:55,210 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:55,210 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:55,210 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-04-29 04:06:55,210 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 13 transitions, 61 flow [2021-04-29 04:06:55,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,211 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 04:06:55,211 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 04:06:55,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-04-29 04:06:55,211 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 04:06:55,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 04:06:55,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1484748849, now seen corresponding path program 24 times [2021-04-29 04:06:55,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 04:06:55,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156291414] [2021-04-29 04:06:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 04:06:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 04:06:55,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:55,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 04:06:55,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:55,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 04:06:55,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 04:06:55,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 04:06:55,236 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 04:06:55,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 04:06:55,255 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-04-29 04:06:55,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-29 04:06:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 04:06:55,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156291414] [2021-04-29 04:06:55,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 04:06:55,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 04:06:55,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643755852] [2021-04-29 04:06:55,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 04:06:55,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 04:06:55,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 04:06:55,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 04:06:55,270 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-04-29 04:06:55,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 13 transitions, 61 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 04:06:55,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-04-29 04:06:55,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:06:55,302 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-04-29 04:06:55,302 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-04-29 04:06:55,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 12 events. 0/12 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 04:06:55,302 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2021-04-29 04:06:55,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 12 transitions, 65 flow [2021-04-29 04:06:55,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 04:06:55,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 04:06:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2021-04-29 04:06:55,303 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7649572649572649 [2021-04-29 04:06:55,303 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 179 transitions. [2021-04-29 04:06:55,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 179 transitions. [2021-04-29 04:06:55,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:06:55,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 179 transitions. [2021-04-29 04:06:55,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,305 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,305 INFO L185 Difference]: Start difference. First operand has 39 places, 13 transitions, 61 flow. Second operand 6 states and 179 transitions. [2021-04-29 04:06:55,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 12 transitions, 65 flow [2021-04-29 04:06:55,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 12 transitions, 49 flow, removed 1 selfloop flow, removed 8 redundant places. [2021-04-29 04:06:55,306 INFO L241 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2021-04-29 04:06:55,306 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2021-04-29 04:06:55,306 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-04-29 04:06:55,306 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 04:06:55,306 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 0 transitions, 0 flow [2021-04-29 04:06:55,306 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 0 transitions, 0 flow [2021-04-29 04:06:55,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 04:06:55,307 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 04:06:55,307 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 04:06:55,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 04:06:55,307 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 04:06:55,307 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 04:06:55,307 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 04:06:55,307 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-04-29 04:06:55,308 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 04:06:55,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:06:55,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-04-29 04:06:55,313 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 04:06:55 BasicIcfg [2021-04-29 04:06:55,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 04:06:55,314 INFO L168 Benchmark]: Toolchain (without parser) took 5372.51 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 271.2 MB in the beginning and 276.9 MB in the end (delta: -5.7 MB). Peak memory consumption was 54.5 MB. Max. memory is 16.0 GB. [2021-04-29 04:06:55,314 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 04:06:55,314 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.34 ms. Allocated memory is still 302.0 MB. Free memory was 285.3 MB in the beginning and 283.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 04:06:55,314 INFO L168 Benchmark]: Boogie Preprocessor took 16.36 ms. Allocated memory is still 302.0 MB. Free memory was 283.9 MB in the beginning and 282.9 MB in the end (delta: 926.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 04:06:55,315 INFO L168 Benchmark]: RCFGBuilder took 294.04 ms. Allocated memory is still 302.0 MB. Free memory was 282.9 MB in the beginning and 279.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. [2021-04-29 04:06:55,315 INFO L168 Benchmark]: TraceAbstraction took 4960.71 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 279.2 MB in the beginning and 276.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 64.8 MB. Max. memory is 16.0 GB. [2021-04-29 04:06:55,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 37.34 ms. Allocated memory is still 302.0 MB. Free memory was 285.3 MB in the beginning and 283.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.36 ms. Allocated memory is still 302.0 MB. Free memory was 283.9 MB in the beginning and 282.9 MB in the end (delta: 926.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 294.04 ms. Allocated memory is still 302.0 MB. Free memory was 282.9 MB in the beginning and 279.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4960.71 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 279.2 MB in the beginning and 276.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 64.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 128.8ms, 30 PlacesBefore, 30 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 66 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 66, positive: 66, positive conditional: 66, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 66, positive: 66, positive conditional: 0, positive unconditional: 66, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 66, positive: 66, positive conditional: 0, positive unconditional: 66, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 66, positive: 66, positive conditional: 0, positive unconditional: 66, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 66, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 66, unknown conditional: 66, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.1ms, 24 PlacesBefore, 24 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 204 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.9ms, 25 PlacesBefore, 23 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3ms, 24 PlacesBefore, 22 PlacesAfterwards, 13 TransitionsBefore, 13 TransitionsAfterwards, 36 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.7ms, 30 PlacesBefore, 29 PlacesAfterwards, 15 TransitionsBefore, 15 TransitionsAfterwards, 40 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.9ms, 36 PlacesBefore, 35 PlacesAfterwards, 17 TransitionsBefore, 17 TransitionsAfterwards, 46 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.2ms, 42 PlacesBefore, 41 PlacesAfterwards, 20 TransitionsBefore, 20 TransitionsAfterwards, 58 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.6ms, 46 PlacesBefore, 45 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 70 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.5ms, 52 PlacesBefore, 51 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 72 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.8ms, 55 PlacesBefore, 53 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 64 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.0ms, 57 PlacesBefore, 56 PlacesAfterwards, 30 TransitionsBefore, 30 TransitionsAfterwards, 60 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.6ms, 61 PlacesBefore, 59 PlacesAfterwards, 30 TransitionsBefore, 30 TransitionsAfterwards, 58 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.1ms, 61 PlacesBefore, 59 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 46 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.2ms, 58 PlacesBefore, 57 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.3ms, 63 PlacesBefore, 62 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.6ms, 67 PlacesBefore, 66 PlacesAfterwards, 33 TransitionsBefore, 33 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.1ms, 71 PlacesBefore, 69 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 38 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.9ms, 71 PlacesBefore, 68 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.7ms, 70 PlacesBefore, 69 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.9ms, 74 PlacesBefore, 73 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 24 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.6ms, 77 PlacesBefore, 74 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 20 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.1ms, 75 PlacesBefore, 70 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 18 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.3ms, 68 PlacesBefore, 63 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 12 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2ms, 63 PlacesBefore, 62 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 12 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.2ms, 66 PlacesBefore, 60 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6ms, 57 PlacesBefore, 52 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3ms, 47 PlacesBefore, 39 PlacesAfterwards, 13 TransitionsBefore, 13 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9ms, 35 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 17.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4785.4ms, OverallIterations: 27, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1735.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 248.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 196 SDtfs, 248 SDslu, 132 SDs, 0 SdLazy, 351 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 329.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1540.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=448occurred in iteration=19, InterpolantAutomatonStates: 153, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.8ms SsaConstructionTime, 90.7ms SatisfiabilityAnalysisTime, 1947.0ms InterpolantComputationTime, 351 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 324 ConstructedInterpolants, 0 QuantifiedInterpolants, 4358 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...